Korfund Elastomeric Isolator Catalog

Vibration Mountings & Controls, Inc.

ELASTOMERIC MOUNTS BACKGROUNDVMC offers an extensive range of elastomeric isolationmounts and pads that limit the transmission of struc-ture-borne vibration and impacts. These can beused in a wide variety of applications includingelectronics equipment, engines and gensets,vehicle cab mounts, HVAC equipment andgeneral industrial machinery. Structure-borne shock and vibration can lead tomalfunctions and shortened life ofequipment, not to mention annoy-ance caused by vibrating buildingstructures and generated audiblenoise. VMC’s elastomeric products aredesigned to minimize these events.

Elastomeric compounds are extremely versatile. Rubber is just one commonname for one of the families of materials encompassed by this term. Elastomers canbe cut or molded into almost any shape and are available in a range of stiffnesses tomeet isolation and load-bearing requirements. Elastomers provide inherent dampingof dynamic inputs. VMC has the capability to engineer and produce special designsboth in terms of geometry and elastomeric compound.

Elastomers cannot rust. Properly selected they can resist oil, most industrial chemi-cals, industrial temperatures and the effects of the weather such as sunlight (UV)and ozone. Molded-in metal structures are protectedby coatings or the elastomer itself. Many of VMC’selastomers are color coded to indicate load rating.This permanent, pigmented color permeates thematerial and cannot wear or peel off. Mount rating istherefore easily determined in the field by inspection,even from a distance.

VMC’s engineered elastomeric pads provide excel-lent mid-to-high frequency vibration attenuation asbase mounts in compression. They are economicaland can be tailored to the application in the field.Typical uses include air compressors, business

machines, fans, printing presses,pumps and shears. Bolting throughpad mounts into a supporting floor requires a compliant layer under thebolt head and clearance around the bolt shank. This is to avoid a“short-circuit” for vibration energy through the bolt. Pads can bestacked to create a softer suspension and interleaved with metal platesto increase stability.

To accommodate particular project needs, elastomeric mounts areavailable with various mounting provisions. Specialneeds should be brought to theattention of VMC’s EngineeringDepartment.

TECHNOTES

ELASTOMERICMOUNTS

Vibration Mountings & Controls, Inc. 601

In its simplest form, an elastomeric mount is a block of material that will deflect under an applied load.Elastomers include many varieties of rubber, plastics,composite materials and cork. In one form or another,VMC offers all of these. VMC’s line of molded mountsare manufactured from both synthetic and natural rub-bers. They may or may not have metal inserts moldedinto them to provide mounting interfaces and to controlelastic response and stresses.

Like any resilient mounting system, we have a dynamicinput, a desired output, and a box between them thatmodifies the input to the output. The critical factorsnecessary to determine the character of the systemare the supported mass, its approximate center ofgravity and its geometry. These will enable us to deter-mine the static load on each mount. Some types ofequipment impose an additional reaction load againsttheir mounts. Elastically supported engines and motorsthat drive against something that is not on the sameelastic suspension are of particular interest. A goodexample of this is a vehicle engine and transmissionthat drives against the vehicle’s axle and wheels. Someequipment may exhibit a violent shudder upon start-upand shut-down. Inertial reactions of equipment thataccelerate and decelerate quickly may also have to beconsidered. Applied loads that occur infrequently canbe given different consideration than steady state loadsand repetitive loads when selecting a mount based on strength.

From a theoretical point of view, we can select amount by first considering the frequency of the input tobe attenuated. This is usually the lowest frequency, orat least the lowest frequency with amplitude of anyconsequence. We then step back by a factor of 3 ormore to establish a filter point, or suspension naturalfrequency at a lower frequency. We can calculate thedesired spring rate:

ƒn = 1 √K2π m

Expected transmissibility, or in other words, isolationefficiency, can be obtained from the classical transmis-sibility equation for first order systems, or from itsgraphical representation.

Now having a maximum load and target spring rate,the catalog can be searched for an appropriate mount.Given the great variety of mounts that VMC offers, thiscould prove to be a confusing task. A simpler

Schematic of simplemounting system

Transmissibility vs. frequency ratio and C/Cc

1% Transmissibility T = 100 ƒd

2

1- ƒn

TO DETERMINE THE EFFICIENCY OF ISOLATIONSUBTRACT THE % TRANSMISSIBILITY FROM 100%

( )


ELASTOMERICMOUNTS

602

TECHNOTES

approach to selection may be rooted less in mathe-matics. VMC’s elastomer mount product line can bedivided along several functional lines.

The decision whether to use flush mounting has muchto do with the user’s thoughts on installation methodand surrounding structures. Flush mounts put lessdemands on the design of the supporting structures.Usually a reasonable flat surface and two simplethrough or tapped holes are all that is required.Sinking the mount into the surface of the supportingstructure may not only save on installed height but alsoplaces side loads into the plane of the support. Thislimits local bending stresses. Mounts that are not flushrequire features in the supporting structure. In particu-lar, the RB, Ring and Bushing series depend onmounting hole and plate geometry to achieve theirrated characteristics. The decision whether to use afail-safe or captive mount is dictated by the end item’susage. Generally, mobile equipment should be captive.A payload in motion is subject to side thrusts anduplifts even if the primary load is in compression.Despite all best efforts, something that is mobile ortransportable may be turned on its side or upsidedown. When it comes to ultimate strength, rubber can-not match metals. For this reason, we do not rely onrubber alone to keep a payload from becoming a sec-ondary projectile. Requirements imposed by code such

as for earthquake (seismic) resistance and wind loadsnecessitate captive, failsafe mounts. Beyond this, spe-cific load-bearing capacity may have to be establishedto meet job requirements. Failsafe does not imply inde-structible. If a specific load requirement exists, or if fail-ure of the metal members may result in a hazard, VMCshould be consulted. An all-attitude mount functions asa resilient member in all directions. The elastic proper-ties in each direction may differ. An all-attitude mount iscaptive. Not all captive mounts are all-attitude. All ofVMC’s captive mounts are all-attitude to some extent.

With the field of possible mounts narrowed based oninstallation preference and function, we can now turnour attention to selecting based on applied load. Thenumbers that VMC publishes are load ratings. They arenot ultimate loads to failure and they are not necessari-ly recommended loads. The nominal suspension natu-ral frequency that we publish in the catalog will beachieved when a mass which applies the rated load issupported on the mount. In most cases, increasing thisload slightly should not be a problem but will result in aslightly lower natural frequency. VMC should be con-sulted when increasing load much over the rated loadis being considered. Applying lighter loads will result ina higher suspension natural frequency. The higher nat-ural frequency, or stiffer, suspension may provide lessattenuation of lower frequency disturbances. In aworst case, it may approach or coincide with a higherdisturbing frequency and result in amplification. For thisreason, we like to look at the suspension natural fre-quency and disturbing frequencies and not simply loadratings. The presence of shocks, transient reactionloads and large amplitude inputs may be good reasonfor backing down from the rated load to add margin.

For most industrial applications, we look to moldedelastomer mounts to provide suspensions between 8 Hzand 35 Hz. Depending on the specifics of the applica-tion, we may require only minimal resistance to sideloads or complete elastic suspension in all directions.Our catalog details off-axis capability or stiffness ratio insome cases. Various axial to radial stiffness ratios canbe achieved with the variety of mounts, from 1:5, through1:1 to 5:1 and beyond. Where there is a question onoff-axis characteristics, VMC should be consulted.

The usage environment dictates the type of elastomerthat should be specified. VMC’s standard products are

Flush Mounted:MB SeriesRSM SeriesBM SeriesCM SeriesVLM SeriesR/RD/RP/RDP SeriesRDC2TTA/TTB SeriesGC2/GC3LD SeriesLF with optional standoffPads

Non-Flush Mounted:LF/LFS/LLF SeriesLF SeriesRB SeriesSB3/CSB3 SeriesGR2/GR3 Series

Captive (failsafe, restrained):LF/LFS/LLF SeriesMB SeriesRSM SeriesLR SeriesRB SeriesSB3/CSB3 SeriesCM SeriesRDC2TTA/TTB SeriesGR/GC Series

Non-Captive:BM SeriesVLM SeriesR/RD/RP/RDP SeriesLD SeriesPads in simple

compression

TECHNOTES

ELASTOMERICMOUNTS


listed in usually one but sometimes two “standard”materials. To meet specifics of temperature, extremestrength, enhanced damping, chemical resistance andresistance to ozone and sunlight we can provide manyother materials. With few exceptions, we can mold anymount in our product line in any material that can bemolded. Our manufacturing process is set up so thatwe can produce short run specials sometimes at thesame cost, or with a very slight premium. VMC shouldbe consulted whenever environment is suspected tobe an issue. We offer here some guidelines to ourmost commonly used materials.

Neoprene and Neoprene Blends – Good generalpurpose black-rubber for sustained operating temperatures between -40o and +180oF. Resistant to splashes of most oils and hydraulic fluid and other conditions typical of industrial and engine compartment environments. Our standard material for most industrial mounts.

VMC Color-coded Neoprene and Blended Materials – Good general purpose rubber for mostmoderate service conditions. Particularly favored in theHVAC industry because the material can be colorcoded to indicate mount rating and stiffness. Our stan-dard in our R/RD line and pads.

Silicone – Provides increased operating temperaturerange of -60o to +300oF. Inherently resistant to manychemicals, with the exception of lubricating oil. Lowoutgassing. For this reason it is favored for military andspace applications. Overall, silicone provides greaterdynamic damping than many other materials. It alsocan be color coded to indicate load capacity.

VMC Weather-Resistant (WR) Blended Material –Similar to our color-coded neoprene and blendedmaterials, it offers the same color coding to indicateload rating. Upper limit on service temperature isextended to +250oF and has greater resistance to sun-light (UV) ozone, salt water and acids. For this reason itmay be preferred when extreme outdoor conditions are encountered such as on exposed rooftops in some locations.

Nitrile – Generally a good substitute for our neoprene,blended and color-coded materials when significantexposure to oils and hydraulic fluids are present.

EPDM – A good substitute for our neoprene, blendedand color-coded materials when extended temperaturerange, improved chemical resistance or low-tempera-ture flexibility is needed.

VMC Extreme High Temperature Silicone – Capableof continuous operation to +485oF.

VMC High Damped Silicone – Capable of producingmounts with dynamic damping factors approaching25% of critical depending on type of input.

Other Specialty Materials – Fluorosilicone,Fluorocarbon, ECO, HNBR, Polyacrylates and naturalrubber to name just a few.

Elastomeric mounts will inherently provide somedegree of dynamic damping. Damping limits responsepeaks when a machine momentarily passes throughresonance such as during start-up. It limits ringing dueto shocks and transients. Damping is a property of thematerial and also affected by the character of thedynamic input. It is velocity dependent so high fre-quency, large displacement inputs will result in propor-tionally the greatest damping out of a given material.Damping operates by drawing energy out of the sys-tem in the form of heat. Damped mounts will warmwith operation. In the extreme case, heavily dampedmounts operated for extended periods of time undersevere conditions or near resonance will overheat. Thiswill shorten the mount’s overall service life. The level ofdamping should be appropriate to the application.Above all else, mounts should not be operated in aresonance condition for extended periods of time. Inmost industrial applications, the moderate amount ofdamping provided by our standard materials combinedwith operation well above suspension resonance willprovide excellent performance and service life. Certainmilitary applications necessitate high damping materi-als in order to control broad-spectrum random vibra-tion and shock. The use of high damping material mustbe combined with good engineering analysis and test-ing particularly when the suspension natural frequencymust reside within a narrow band. Damping makes themount appear stiffer dynamically.


ELASTOMERICMOUNTS

604

TECHNOTES

Polymer Type

Spec

ific

Grav

ity

Hard

ness

Ran

ge (S

hore

A)

Tens

ile S

tren

gth

(Max

psi

@ r

oom

tem

p)

Elon

gatio

n M

ax(%

@ r

oom

tem

p)

Resi

lienc

e

Com

pres

sion

Set

Impe

rmea

bilit

y to

Gas

es

Flex

Cra

ckin

g Re

sist

ance

Tear

Str

engt

h

Abra

sion

Res

ista

nce

Impa

ct S

tren

gth

Cut G

row

th R

esis

tanc

e

Oxid

atio

n Re

sist

ance

Ozon

e Re

sist

ance

Wea

ther

ing

Resi

stan

ce

Sunl

ight

Res

ista

nce

Wat

er R

esis

tanc

e

Natural Rubber 0.93 30-100 4000 750 E G F F E E E E F -G P F P - F E

SBR 0.94 35-100 3000 600 G G F G F F - G E G F - G P F F G - E

EPDM 0.86 30-90 3000 600 G G F G F - G G - E G G G - E E E E E

Neoprene 1.23 35-95 3000 600 G - E F - G F - G G F - G G - E G - E G G - E G G G - E G

Nitrile 1.00 30-100 3000 600 F - G G G F F - G G - E F - G G F - G P F - G P - F G - E

Fluorocarbon 1.85 55-95 3000 450 F G - E G - E G F F - G F E E E E E G - E

Silicone 0.98-1.60 25-90 1500 800 F - G G - E P - F F - E P - F P - F P - G P - F E E E E G

Isoprene 0.92 30-100 3500 750 E E F F G G - E E E F - G P F P - F E

Butyl 0.92 30-90 2500 700 P - F P - F E G G G G E E G -E E E E

Butadiene 0.91 45-80 2500 500 E F F E G E G F - G F - G P F F E

Thiokol 1.25-1.35 20-80 1500 450 P - F P - F E P - F P - F P P - F P G - E E G - E G - E F - G

Urethane 1.02-1.025 55-100 8000 750 F - E G - E P - F G - E E E G - E G - E G - E G G - E G - E G

Hypalon 1.12-1.28 40-95 3000 600 F-G F G G F - G G - E G G E E G - E E G

Acrylic 1.09 40-90 2000 400 F - G G F - G F P - F F - G P F - G E G - E E E P - F

Epichlorohydrin(EO &ECO)

1.27-1.36 40-90 2500 400 F - G F G G F - G F - G G G G - E E G - E G - E G

Chlorinated Polyethylene 1.16-1.25 45-95 3500 600 F - G F - G G G - E G G - E E F E E G E G

Crosslinked Polyethylene 0.92 90+ 3000 500 P F G G - E F F P - F P E G - E G G G

Vamac 1.04 40-90 2500 700 F G F G - E G - E G F - G G - E E E E E E

Vynathene 0.095-1.02 45-95 4000 400 F G - E G G F - G G F - G F E E E E G - E

Norsorex 0.96 15-100 3500 600 G - E G G - E G G G - E E G F - G P F F E

E = Excellent G - E G = Good F - G F = Fair P - F P = Poor

TECHNOTES

ELASTOMERICMOUNTS


Polymer Type

Flam

e Re

tard

ance

Heat

Res

ista

nce

Low

Tem

pera

ture

Fle

xibi

lity

Oil &

Gas

olin

e Re

sist

ance

Resi

stan

ce to

Ani

mal

&Ve

geta

ble

Oils

Resi

stan

ce to

Alc

ohol

s

Resi

stan

ce to

Alk

alis

Resi

stan

ce to

Aci

ds

Resi

stan

ce to

Alip

hatic

Hydr

ocar

bon

Solv

ents

Resi

stan

ce to

Aro

mat

icHy

droc

arbo

n So

lven

ts

Resi

stan

ce to

Oxy

gen

Solv

ents

Mos

t Com

mon

Pol

ymer

sM

olde

d by

Vib

ratio

nM

ount

ings

& C

ontr

ols

Natural Rubber P F G - E P F G F F - G P P G ✓

SBR P F - G G P F G F F - G P P G ✓

EPDM P G - E G - E P G F - G G - E G P P G - E ✓

Neoprene G F - G F F - G G G - E E G G P - F P - F ✓

Nitrile P G F - G G - E G - E F - G G - E G E F - G P ✓

Fluorocarbon G - E E F - G E E F - E F - G G E E P ✓

Silicone F - G E E P - F F - G G P F P - F P - F F ✓

Isoprene P P - F G P F G F F - G P P F - G –

Butyl P G F - G P G - E G E G - E P P G - E –

Butadiene P P - F G - E P F G F F - G P P G –

Thiokol P F F - G E G - E G G P - F E G - E G - E –

Urethane P - E F - G G G - E G F - G P P - F G P - F P –

Hypalon G G F F - G G G P F P - F P - F F –

Acrylic P E P - F G G - E P P F E P - F P –

Epichlorohydrin(EO &ECO) F - G G - E F - E G - E G - E G F - G G E E P –

Chlorinated Polyethylene F - G G F - G F - G G E E E G P - F F –

Crosslinked Polyethylene P F F G - E E E E E G - E E G –

Vamac P G - E P - F F G - E F G P - F G P - F P –

Vynathene P G - E P F F G G F F P F –

Norsorex P F G P F G F F - G P P G –

Effect Dynamic DampingCharacteristics Crosses multiple ratings


ELASTOMERICMOUNTS

606

40 - 2800 LBLOAD RANGE

LFSERIES

APPLICATIONS

• Static load range from 40-2800 lbs. offers a widerange of application flexibility.

• Low profile provides installation in space-restrictedapplications.

• Low natural frequency of 10 Hz at maximum loadprovides structure-borne noise attenuation in eventhe most challenging applications.

• 1:1 axial to radial stiffness ratio.

• Rugged, all-bonded construction provides durabilityin extreme conditions.

• Failsafe design problems when used in conjunction with snubbing washer for mobileand all-attitude use.

• Typical damping ratio C/Cc=0.1 transmissibilityapproximately 5:1 at resonance.

LOW FREQUENCY ISOLATION MOUNTS

LF Series are low frequency, elastomeric shock andvibration isolation mounts used in a variety of applica-tions where space and weight are restricted – vehiclecabs, engines, engine gensets, marine equipment, andshipping containers. The series offer a low natural fre-quency that is ideal for isolating structure-borne noisein these mobile applications.

The LF Series provides a low profile, rugged, all-bond-ed construction that includes corrosion-resistant coat-ing on all metal surfaces. The structural sections aremade of steel for excellent strength and durability.

The elastomeric element resist oils, ozone and mostsolvents – providing optimum resilience in nearly allenvironments. The operating temperature range of -20oF to +180oF offers continuous operation in allweather conditions. At a maximum size of just 3.25”, the LF Series offers installation in numerousportable machinery and equipment applications. Forspecial elastomeric compounds contact the VMCEngineering department.

FEATURES & BENEFITS

LF SERIES SNUBBING WASHERS* DIMENSIONSTYPE DIA. ‘A’, ins. DIA. ‘B’, ins. THICKNESS ‘C’, ins. MODEL #

LF1 Series 0.45 2.00 0.13 148099-5

LF1.5 Series 0.51 2.00 0.13 148099-18

LF2 Series 0.64 2.25 0.15 148099-6

LF3 Series 0.76 2.50 0.18 148099-7

LF4 Series 1.01 3.25 0.25 148099-17

* Zinc Plated Carbon Steel

NOTE: VMC can mold almost any elastomer into any of its elastomer mount products. Special materials include, but are not limited to, natural rubber, Weather Resistant (WR), HighDamped Silicone, Extreme High Temperature (EHT) Silicone, Nitrile and EPDM. Many of these are color coded by hardness.

TECHNICAL

LFSERIES

ELASTOMERICMOUNTS


TYPE LF1AXIAL STATIC RADIAL STATIC

MODEL # LOAD, MAX., lbs. LOAD, MAX., lbs.

LF1 - 150 150 100

LF1 - 200 200 150

LF1 - 270 270 180

LF1 - 330 330 220

AXIAL LOAD Vs. DEFLECTIONAXIAL LOAD Vs.

NATURAL FREQUENCY

TYPE LF1.5AXIAL STATIC RADIAL STATIC


LF1.5 - 270 270 180

LF1.5 - 350 350 230

LF1.5 - 450 450 300

LF1.5 - 570 570 380

4.75

3.75

2.75

.406 DIA. THRUTYP.

.532 THRU HOLE



ELASTOMERICMOUNTS

608

LFSERIES



LF2 - 500 500 330

LF2 - 650 650 430

LF2 - 800 800 530

LF2 - 1000 1000 660

AXIAL LOAD Vs. DEFLECTIONAXIAL LOAD Vs. NATURAL FREQUENCY



LF3 - 700 700 450

LF3 - 900 900 600

LF3 - 1200 1200 800

LF3 - 1500 1500 1000


LFSERIES

ELASTOMERICMOUNTS


APPLICATIONS

• Engines, cabs and radiators of highway and offhighway vehicles

• Motor generators and compressors

• Pumps and centrifuges

• Portable equipment and machinery

• Marine equipment and power plants

• Fans and blowers



LF4 - 1200 1200 800

LF4 - 1600 1600 1000

LF4 - 2100 2100 1400

LF4 - 2800 2800 1800



ELASTOMERICMOUNTS

610

25-300 LBLOAD RANGE

LFS1SERIES

APPLICATIONS


• Low profile design provides installation in space-restricted applications.

• Low natural frequency of 9.5 Hz at maximum loadprovides structure-borne noise attenuation in eventhe most challenging applications.

• Rugged, all-bonded construction provides durabili-ty in most environmental conditions.

• Failsafe snubbing washer provides for mobile andall-attitude use.

• For isoelastic suspensions, 1:1 axial to radial stiff-ness ratio.

LOW FREQUENCY SNUBBED ISOLATION MOUNTS

LFS1 Series are low frequency, snubbed elastomericvibration isolation mounts that are ideal for light loadapplications including small engines, pumps, compres-sors, and generators used in either stationary or mobileenvironments.

The LFS1 is a rugged, low profile type mount that canbe focused to decouple a system for better stabilityand isolation. The mount is failsafe when used with therecommended snubbing washer. At maximum ratedload, the mount exhibits an axial natural frequency ofabout 9.5 Hz that is outstanding in isolating structure-borne noise in mobile applications.

The LFS1 Series provides a low profile, sturdy con-struction that includes a corrosion-resistant coating onall metal surfaces. The structural sections are made ofcarbon steel for excellent strength and durability.

The elastomeric element resists oils, ozone and mostsolvents – providing optimum resilience in nearly allenvironments. At just .5 lbs., the LFS1 Series offersinstallation in any number of stationary or portableequipment applications.

FEATURES & BENEFITS

TECHNICAL

SNUBBING WASHER P/N 148099-5 (ZINC PLATED CARBON STEEL)

Dia. 0.45"

Dia. 2.00" Thickness 0.13"

NOTE: VMC can mold almost any elastomer into any of its elastomer mount products.Special materials include, but are not limited to, natural rubber, Weather Resistant (WR),High Damped Silicone, Extreme High Temperature (EHT) Silicone, Nitrile and EPDM.Many of these are color coded by hardness.

LFS1SERIES

ELASTOMERICMOUNTS


APPLICATIONS

• Vehicle cabs

• Small engines

• Generators

• Compressors


• Pumps

• Centrifuges

MAX. AXIAL DEFLECTION ATMODEL # LOAD, lbs. MAX. LOAD, ins.

LFS1-75 75 0.12

LFS1-100 100 0.12

LFS1-175 175 0.12

LFS1-300 300 0.12



ELASTOMERICMOUNTS

612


LLFSERIES


• Low profile design permits installation in space-restricted applications.

• Failsafe design problems when used in conjunction with snubbing washer for mobileand all-attitude use.

• Rugged, all-bonded construction provides durabili-ty in extreme conditions.

• Offers an axial to radial stiffness of 1:3.5.

• Low natural frequency of 8 Hz at maximum load provides excellent attenuation of machinebased disturbances.


LOW-LOW FREQUENCY ISOLATION MOUNTS

VMC LLF Series are low-low frequency, elastomericvibration isolation mounts used in a variety of applica-tions where space and weight are restricted – engines,radiators, motor generators, marine equipment, powerplants and portable machinery.

The LLF Series features corrosion-resistant coating onmetal surfaces and the elastomer design resists oils,

ozone and most solvents – providing optimum durabili-ty in the majority of applications. The operating tem-perature range of -20oF to +180oF offers continuousoperation in all weather conditions. At a weight of just6 lbs., the LLF Series offers installation in numerousportable machinery and equipment applications.

FEATURES & BENEFITS

APPLICATIONS


LLFSERIES

ELASTOMERICMOUNTS


TECHNICAL

APPLICATIONS

• Engines, cabs and radiators




• Marine equipment


MODEL # MAX. DEFLECTION, ins. AXIAL LOAD RANGE, lbs.

LLF-400 0.15 250-400

LLF-700 0.15 400-700

LLF-1000 0.15 700-1000

LLF-1300 0.15 1000-1300

Detail “A”

NOTE: Mount is provided with snubbing washer attached as shown in Detail “A”



ELASTOMERICMOUNTS

614


MBSERIES

APPLICATIONS

• Static load range from 30 to 1300 lbs. offers awide range of application flexibility.

• Cast aluminum housing and carbon steel hardware provide durability in harsh environmental conditions.

• Natural frequency of 12 to 15 Hz at maximum loadprovides structure-borne noise attenuation in eventhe most challenging applications.

• Failsafe design for mobile or seismic applications.

• Mount shipped as a complete assembly for ease of installation.

• Failsafe snubbing washer provides for mobile andall-attitude applications.

• Built-in leveling device offers simplified equipment installation.

• Available with longer bolt for height adjustable installation.

HOUSED RING & BUSHING ISOLATION MOUNTS

MB Series are elastomer shock and vibration isolationmounts used for marine, vehicular and stationaryequipment applications such as engine gensets, com-pressors, pumps, centrifuges, electric motors, trans-formers, engine drive trains, and rooftop equipmentapplications where a failsafe design is required. Atmaximum rated load, the natural frequency range of 12to 15 Hz offers excellent isolation of structure-bornenoise in these applications.

The MB Series also are furnished as a completeassembly and feature a built-in leveling device for sim-

ple installation. The MB1 and MB3 housings are madeof heat-treated cast aluminum, while the MB5 is manu-factured from welded steel. All hardware consists ofzinc-plated, carbon steel for superior strength andlong-life.

The elastomer element resists oils, ozone and mostsolvents – providing optimum resilience in even theharshest environments. The MB Series works well formobile and all-attitude applications. The operating tem-perature of -20o F to +180o F offers continuous opera-tion in ambient conditions.

FEATURES & BENEFITS


MBSERIES

ELASTOMERICMOUNTS


TYPE MB1APPROXIMATE

AXIAL STATIC RADIAL STATIC NATURAL FREQUENCYMODEL # LOAD, MAX., lbs. LOAD, MAX., lbs. AT MAX. LOAD, Hz

MB1-60 60 30 15

MB1-120 120 40 15

MB1-200 200 50 15

AXIAL LOAD Vs. DEFLECTION

TYPE MB3APPROXIMATE

AXIAL STATIC RADIAL STATIC NATURAL FREQUENCYMODEL # LOAD, MAX., lbs. LOAD, MAX., lbs. AT MAX. LOAD, Hz

MB3-350 350 140 12

MB3-700 700 300 12

MB3-1300 1300 650 12

AXIAL LOAD Vs. DEFLECTION

TECHNICAL



ELASTOMERICMOUNTS

616

MBSERIES


TYPE MB5APPROXIMATE

MAX. RATED NATURAL FREQUENCYMODEL # LOAD, lbs. AT MAX. LOAD, Hz

MB5-2600 2600 10

MB5-3600 3600 10

MB5-4600 4600 10

APPLICATIONS

• Marine, vehicular and stationary equipment

• Generators and compressors

• Rooftop equipment subject to harsh weather andsevere winds

• Mobile applications


• Engines and drive trains

• Electric motors and transformers

• Seismic installations

NOTES:1. Standard Finish: Housing - one shop coat green paint.Hardware - Electro-zinc plated or black oxide2. Unit weight: 45 lbs.

ELASTOMERICMOUNTS



RSMSERIES

APPLICATIONS

• Wide choice of static load ranges provides isola-tors that can be matched to strict engineeringrequirements.

• Choice of ductile iron or cast aluminum housingspermit use in heavy duty or seismic applications, orwhere weight is a consideration.

• Failsafe snubbing washer provides for mobile andall-attitude applications.

• Low natural frequency of 8 Hz at maximum loadprovides structure-borne noise attenuation in eventhe most challenging applications.


• Offers an axial to radial stiffness of 1:3.5.

HOUSED LOW FREQUENCY ISOLATION MOUNTS

RSM Series mounts are fully bonded, failsafe, elas-tomer mounts designed to provide shock and vibrationisolation for a variety of applications in the medium toheavy load range. Offered in two designs – the RSM1Series offers low load ranges ideal for small engines,pumps and generators, and the RSM3 Series offersload ranges up to 1,300 lbs. for use in marine androoftop equipment.

The RSM Series also are furnished as a completeassembly for simple ordering and installation. Themount is manufactured of a ductile iron outer housing

for seismic or heavy duty applications. The series pro-vides an extremely durable construction that includeszinc-plated, carbon steel hardware and corrosion-resistant coating on all metal surfaces.

The elastomer elements resist oils, ozone and mostsolvents – providing optimum resilience in even theharshest environments. Failsafe snubbing washer pro-vides for mobile and all-attitude applications. The oper-ating temperature of -20oF to +180oF offers continuousoperation in all environmental conditions.

FEATURES & BENEFITS

APPLICATIONS

• Vehicular and stationary equipment

• Engine generators and compressors


• Electric motors and transformers

• Equipment subjected to seismic or severe wind loads


• Marine propulsion equipment and gensets



ELASTOMERICMOUNTS

618

RSMSERIES

TYPE RSM1MODEL # LOAD RANGE, lbs. DEFLECTION AT MAX. LOAD, ins.

RSM1-120 60-120 0.15

RSM1-200 100-200 0.15

RSM1-250 125-250 0.15

RSM1-400 200-400 0.15

TECHNICAL

TYPE RSM3MODEL # LOAD RANGE, lbs. DEFLECTION AT MAX. LOAD, ins.

RSM3-400 250-400 0.15

RSM3-700 400-700 0.15

RSM3-1000 700-1000 0.15

RSM3-1300 1000-1300 0.15


RSMSERIES

ELASTOMERICMOUNTS



VMC’s RSM5 Rubber in Shear Mount is a heavy-duty,fully captive molded elastomer shock and vibration iso-lator. Its housing’s rugged welded steel constructionand fail-safe design make it ideal for severe mobile,marine, seismic and all-attitude applications. Averagestatic load ratings will range between 4,000 and10,000 pounds in all directions. With the use of option-

al internal booster springs, or under special low dutycycle applications, loading up to 20,000 pounds ispossible. Working deflections are in the .25 to .75 inchrange. This results in good low to mid-frequency rangeisolation. The mount may be molded with any of ourstandard or custom elastomers to meet specific envi-ronmental, service life and damping requirements.

RSM5


ELASTOMERICMOUNTS

620

0.25”DEFLECTION


LRSERIES

APPLICATIONS

• Static load range from 20 to 400 lbs. offers a widerange of application flexibility.


• Rugged, all-bonded construction provides durabili-ty in most environmental conditions.

• Damping ratio C/Cc=.10 (transmissibility approxi-mately 5:1 at resonance).

• Axial to radial stiffness of 6:1 provides excellentstructure-borne noise isolation.

LOW RADIAL ISOLATION MOUNTS

LR Series are low frequency, focused, elastomericshock and vibration isolation mounts. The series isideal for light load applications including small engines,pumps, compressors, fans, and blowers used in eitherstationary or mobile environments.

The LR Series offer a rugged, low profile mount thatcan be focused to decouple a system for better stabili-ty and isolation. At maximum rated load, the mountprovides an axial to radial stiffness ratio of 6:1 – offer-ing excellent structure-borne noise isolation in a varietyof applications.

The LR Series provide a low profile, sturdy construc-tion that includes corrosion-resistant coating on allmetal surfaces. The structural sections are made ofcarbon steel for excellent strength and durability.

The elastomeric elements resist oils, ozone and mostsolvents – providing optimum resilience in nearly allenvironments. When used with a snubbing washer, LRseries mounts offer a failsafe design. The operatingtemperature of -20oF to +180oF offers continuous oper-ation in these ambient conditions.

FEATURES & BENEFITS

TECHNICAL

LR SERIES SNUBBING WASHERS* DIMENSIONSTYPE DIA. ‘A’, ins. DIA. ‘B’, ins. THICKNESS ‘C’, ins. MODEL #

LR1 0.45 2.00 0.13 148099-5

LR2 0.64 2.25 0.15 148099-6

TYPICAL INSTALLATION CONFIGURATION



LRSERIES

ELASTOMERICMOUNTS


APPLICATIONS

• Small to medium diesel and gas engines





TYPE LR1MODEL # STATIC LOAD NOMINAL, lbs.

LR1-40 40

LR1-75 75

LR1-100 100

LR1-150 150

LR1-230 230

TYPE LR2MODEL # STATIC LOAD NOMINAL, lbs.

LR2-100 100

LR2-160 160

LR2-240 240

LR2-320 320

LR2-400 400



ELASTOMERICMOUNTS

622


BMSERIES

APPLICATIONS

• Wide choice of static load ranges provides isola-tors that can be matched to strict engineeringrequirements.

• Low profile provides installation in space-restrictedand vertical applications.

• Rugged construction provides durability in extreme conditions.

• Typical damping ratio C/Cc=.01 transmissibilityapproximately 5:1 at resonance.

• Natural low frequency of 8 Hz at maximum loadprovides structure-borne noise attenuation in eventhe most challenging applications.

BUCKLING ISOLATION MOUNTS

BM Series are low frequency, elastomeric shock andvibration isolation mounts used in a variety of situationswhere loads are applied primarily in a vertical direction.The BM Series offers a low natural frequency that isideal for isolating structure-borne noise in applicationswhere space and weight are restricted, but where highdeflection shock isolation is necessary. Small motors,generators, compressors, pumps, electronics andcomputers are typical applications.

The BM Series provides a durable housing construc-tion that includes corrosion-resistant coating on all

metal surfaces. The structural sections are made ofcarbon steel for excellent strength and long-life. Sincethe BM Series is uniquely designed to isolate verticalloads, it is not inherently failsafe and should not beused in mobile applications unless used in conjunctionwith external restraints.

The elastomeric elements resist oils, ozone and mostsolvents – providing optimum resilience in nearly allenvironments. The operating temperature range of -20oF to +180oF offers continuous operation in theseambient conditions.

FEATURES & BENEFITS

APPLICATIONS

• Small to medium diesel and gas engines




• Portable equipment and machinery when used withexternal restraints

• Transit cases and containers


BMSERIES

ELASTOMERICMOUNTS


TYPE BM1MODEL # AXIAL STATIC LOAD RANGE, lbs.

BM1-60 30 – 60

BM1-100 50 – 100

BM1-130 65 – 130

WEIGHT - .47 lbs.

(Axial to Radial Stiffness Ratio Approx. 2:1)

TECHNICAL

TYPICAL INSTALLATION

CAUTION: Mount is not inherently "fail safe", and therefore should not be used in mobile applications without some external means of restraint.



ELASTOMERICMOUNTS

624

BMSERIES

MODEL # AXIAL STATIC LOAD RANGE, lbs.

BMX2-1 175 – 350

BMX2-2 250 – 500

BMX2-3 350 – 700

WEIGHT 1.20 lbs.

TYPE BM2MODEL # AXIAL STATIC LOAD RANGE, lbs.

BM2-200 100 – 200

BM2-260 130 – 260

(Axial to Radial Stiffness Ratio Approx. 2:1) WEIGHT - 1.00 lbs.


ELASTOMERICMOUNTS



RBSERIES

APPLICATIONS

• Static load range from 30-4600 lbs. offers a widerange of applications flexibility.


• Low natural frequency of 10-12 Hz at maximumload provides structure-borne noise attenuation indifficult applications.

• Some sizes offer optional integral bonded wearplate to eliminate the need for a close toleranceattachment hole – offering simplified installation.Consult factory for more information.

• Corrosion-resistant coating on all metal surfaces ensures durability in most environmental conditions.

• Failsafe design when used with snubbing washers.

RING & BUSHING ISOLATION MOUNTS

RB/RBX Series are ring and bushing-type, elastomershock and vibration mounts designed for a variety ofload ranges. The ring and bushing design providessuperior wear resistance for applications where difficult shock and vibration conditions exist – engines,vehicle cabs, highway and off-highway vehicles, enginegensets, HVAC equipment, and compressors.

The RB/RBX Series provide a low profile mounting thatis failsafe when used with the recommended snubbingwasher. A low frequency of 10 to 12 Hz at maximumload attenuates structure-borne noise in even the mostchallenging applications.

The structural sections are made of carbon steel forexcellent strength and durability. A corrosion-resistantcoating on all metal surfaces ensures long componentlife. The elastomeric elements resist oils, ozone andmost solvents – providing optimum resilience in nearly all environments. The operating temperature of -20o to +180o offers continuous operation in varyingweather conditions.

NOTE: The RB/RBX Series may be manufactured in “half-sizes” to accommodate non-standard platethickness. Contact the VMC Engineering departmentfor assistance.

FEATURES & BENEFITS

NOTES: “Ruggedized” versions of ring and bushing mounts for enhanced cyclic load-bearing capability are available. Consult VMC for specifics on our RBX line of ruggedized ringand bushing mounts.

VMC can mold almost any elastomer into any of its elastomer mount products. Special materials include, but are not limited to, natural rubber, Weather Resistant (WR), HighDamped Silicone, Extreme High Temperature (EHT) Silicone, Nitrile and EPDM. Many of these are color coded by hardness.

APPLICATIONS


• Transformers


• Highway and off-highway vehicles – cabs, radia-tors, battery boxes, fuel tanks



• HVAC equipment



ELASTOMERICMOUNTS

626

RBSERIES

TYPE RB1AXIAL RADIAL MOUNTING APPROXSTATIC STATIC PLATE NATURALLOAD, LOAD, THICKNESS, FREQUENCY

MODEL # MAX., lbs. MAX., lbs. ins. AT MAX. LOAD, Hz

RB1-60 60 30 0.38 15

RB1-120 120 40 0.38 15

RB1-200 200 50 0.38 15

WEIGHT – .1 lbs.

TECHNICAL

RB SERIES SNUBBING WASHERS* DIMENSIONSTYPE DIA. ‘A’, ins. DIA. ‘B’, ins. THICKNESS ‘C’, ins. MODEL #

RB1 Series 0.40 1.56 0.09 148099-1

RB2 Series 0.51 2.00 0.13 148099-18

RB3 Series 0.66 2.81 0.19 148099-3

RB4 Series 0.94 3.88 0.25 148099-4

RB5 Series 1.06 5.25 0.38 148099-2


Dia. ‘A’

Dia. ‘B’ Thickness ‘C’



RBSERIES

ELASTOMERICMOUNTS




RB2-150 150 60 0.56 12

RB2-300 300 120 0.56 12

RB2-500 500 200 0.56 12

WEIGHT – .35 lbs.





RB3-350 350 140 0.88 12

RB3-700 700 300 0.88 12

RB3-1300 1300 650 0.88 12

WEIGHT – .7 lbs.


ELASTOMERICMOUNTS

628

RBSERIES



RB4-500 500 200 1.12 10

RB4-1000 1000 400 1.12 10

RB4-2100 2100 900 1.12 10

WEIGHT – 1.4 lbs.



RB5-2600 2600 1000 1.25 10

RB5-3600 3600 1450 1.25 10

RB5-4600 4600 1900 1.25 10

WEIGHT – 3.5 lbs.



RBSERIES

ELASTOMERICMOUNTS


RBX2 – MAX LOAD, lbs.THICK MOUNTING PLATE THICK MOUNTING PLATE

.563” .50”MODEL # AXIAL RADIAL AXIAL RADIAL

RBX2-150 150 75 80 40

RBX2-260 260 130 160 80

RBX2-500 500 250 300 150

SNUBBING WASHER P/N 148099-18 (ZINC PLATED CARBON STEEL)

Dia. 0.51"

Dia. 2.00" Thickness 0.13"




ELASTOMERICMOUNTS

630


SB3SERIES

APPLICATIONS

• Static load range from 125-750 lbs. offers severalsolutions for low load applications.

• Built-in wear plate prevents the elastomeric ele-ment from coming in contact with the customer’smounting interface.

• Carbon steel structural sections and a zinc-platedcarbon steel snubbing washer give superiorstrength and durability.

• Bonded center tube and wear plates.

• Natural frequency of 12 Hz at maximum load pro-vides structure-borne noise attenuation in even themost challenging applications.

BUILT-IN SNUBBED ISOLATION MOUNTS

SB3 Series are elastomeric vibration isolation mountswith built-in snubbing. These mounts are ideal for usein low load applications where portability and accessi-bility is a concern – vehicle cabs, engines, radiators,battery boxes, and fuel tanks.

The SB3 Series mounts are provided in two halveswith one snubbing washer for simple installation in thefield. The failsafe snubbing design prevents the isola-tion elements from coming in contact with the housing.There is no metal-to-metal contact. For additional iso-lation where heavy downward weights occur, we alsooffer the Chassis SB3 (CSB3) mount. This mount con-sists of one-half SB3, and another half that is an elas-tomeric snubbing ring backed by a steel snubbing plate.

At maximum load, the natural frequency of 12 Hzoffers excellent equipment isolation. The SB3 Seriesalso are furnished with a bonded center tube and wearplates. No chamfer or radius is required on the instal-lation hole. The structural sections are made of carbonsteel. The snubbing washer is zinc-plated carbon steel.All metal surfaces have a corrosion-resistant coatingfor superior strength and long-life.

The elastomeric elements resist oils, ozone and most solvents – providing optimum resilience in even the harshest environments. The operating temperature of -20oF to +180oF offers continuous oper-ation in these ambient conditions. SB3 Series are idealfor many low load, portable equipment applications.

FEATURES & BENEFITS APPLICATIONS

• Highway and off-highway vehicles – engines, cabs,radiators, battery boxes, fuel tanks


• Generators and compressors



• Vehicle chassis for motor homes, buses, trucksand emergency vehicles


SB3SERIES

ELASTOMERICMOUNTS


TECHNICAL

TYPE SB3MODEL # AXIAL STATIC LOAD, lbs.

SB3-250 125 – 250

SB3-425 250 – 425

SB3-600 425 – 600

SB3-750 600 – 750

TYPE CSB3MODEL # AXIAL STATIC LOAD, lbs. DEFL., ins. COLOR

CSB3-250 125 – 250 0.07 RED

CSB3-425 250 – 425 0.07 GREEN

CSB3-600 425 – 600 0.07 YELLOW

CSB3-750 600 – 750 0.07 WHITE



ELASTOMERICMOUNTS

632


CMSERIES

APPLICATIONS

• Static load range from 5-110 lbs. offers severalsolutions for low load applications.

• Lightweight cup housing design permits installationin smaller equipment where space is at a premium.

• All-attitude mounting allows mounting placement inany orientation.

• Zinc-plated steel or aluminum housing optionsmeet virtually any weight requirements.

• Corrosion-resistant coating on all metal surfacesprovides extra durability.

• Two different elastomeric element options meetoperating temperature requirements for almost any application.

• Nominal frequency of 30 Hz provides structure-borne noise attenuation in even the most challeng-ing installations.

CUP-TYPE MOUNTS

CM Series are elastomeric cup mounts that providesuperior shock and vibration isolation for a variety of applications, environments and mounting configura-tions. These mounts are ideal for use in very low load applications where portability and accessibility arerequired – electronic equipment, camera systems, control panels, and airborne and marineequipment systems.

The CM Series cup mounts offer a low profile, light-weight, all-attitude design for flexible installation innumerous locations. The series are available in cold-rolled, zinc-plated steel or aluminum housings to meetvirtually any weight requirements. All metal surfaceshave a corrosion-resistant coating for extra protectionand durability.

Two different elastomeric element types are also available in the CM Series. The standard elastomericelement that offers operating temperatures of -20oF to +180oF. A special order silicone elastomeric elementoffers operating temperatures of -80oF to +300oF; anda damping ratio of C/Cc=.20 to .25 depending ondynamic input. Consult the VMC Engineering depart-ment for details.

Both elastomers resist oils, ozone and most solvents –providing optimum resilience in difficult conditions. At weights from 3.5 to 14 oz., the CM Series is ideal for a wide range of lightweight, portable equip-ment applications.


• Avionics

• Shipboard and vehicular electronics

• Motor generator sets

• Pumps and compressors

• Camera systems


• Control panels

• Military communications equipment

NOTES: Alternate cup and base materials and finishes include olive-drab zinc plate, paint and special threaded inserts. Enhanced damping silicones also available.

VMC can mold almost any elastomer into any of its elastomer mount products. Specialmaterials include, but are not limited to, natural rubber, Weather Resistant (WR), HighDamped Silicone, Extreme High Temperature (EHT) Silicone, Nitrile and EPDM. Many ofthese are color coded by hardness.

CMSERIES

ELASTOMERICMOUNTS


TECHNICAL

TYPE CM1MAX. MOBILE MAX. STATIONARY

MODEL # LOAD, lbs. LOAD, lbs.

CM1-5* 5 8

CM1-14 14 20

CM1-24 24 30

CM1-38 38 70

CM1-60 60 100

Weight: 5.5 oz. (Steel); 3.5 oz. (Alum.)

*Available in silicone only

TYPE CM2MAX. MOBILE MAX. STATIONARY

MODEL # LOAD, lbs. LOAD, lbs.

CM2-30 30 50

CM2-50 50 100

CM2-80 80 150

CM2-110 110 250

Weight: 14 oz. (Steel); 81⁄2 oz. (Alum.)

*Available in silicone only

NOTES: Alternate cup and base materials and finishes include olive-drab zinc plate, paint and special threaded inserts. Enhanced damping silicones also available.



ELASTOMERICMOUNTS

634

50 - 12,000 LBLOAD RANGE

VLMSERIES

APPLICATIONS

• Very wide static load range of 50-12,000 lbs. offerssolutions for almost any production floor application.

• Built-in leveling provides height adjustment for floorirregularities and/or unequal mounting deflection.

• Ribbed mounting base provides a non-skid surface– eliminating the need to bolt machinery to the floor.


• Nominal frequency of 10 Hz provides structure-borne noise attenuation in even the most challenging installations.

LEVEL-FLEX LEVELING MOUNTS

VLM Level-Flex Series are elastomeric leveling mountsthat provide effective shock and vibration control for alltypes of general metalworking and processing machin-ery. A built-in leveling feature provides height adjust-ment to compensate for floor irregularities and/orunequal mounting deflection. Typical applicationsinclude printing presses, milling machines, punchpresses and lathes.

The VLM Series mounting base consists of a ribbeddesign that provides a non-skid surface – eliminatingthe need to bolt machinery to the floor. This dramati-cally cuts machine installation time. Four different VLM

Series sizes provide load capacities up to 12,000 lbs.per mounting – offering mounts that are accuratelyselected for appropriate equipment weight distribution.

The structural sections consist of painted steel hous-ings with electroplated hardware. All metal surfaceshave a corrosion-resistant coating for extra protectionand durability. The elastomeric elements resist oils,ozone and most solvents – providing optimumresilience in most conditions. A natural frequency of 10Hz provides structure-borne noise attenuation in virtu-ally all installations.

FEATURES & BENEFITS

APPLICATIONS

• Grinders, jig bores, lathes

• Milling machines

• Punch presses, shears, brakes

• Processing equipment

• Printing presses


VLMSERIES

ELASTOMERICMOUNTS


TECHNICAL

DIMENSIONSMODEL # A B C D

VLM-3 3.5" 1.125" 0.5"–13 3.5"

VLM-5 5" 1.75" 0.5"–13 5"

VLM-6 6.25" 1.75" 0.75"–10 5"

VLM-8 8" 2" 1"–14 8"

MODEL # AXIAL STATIC LOAD MAX., lbs.

VLM-3 1000

VLM-5 1500

VLM-6 4000

VLM-8 12000



ELASTOMERICMOUNTS

636


TTBSERIES

APPLICATIONS

• Static load range from 250-1000 lbs. offers severalsolutions for light and medium load applications.

• Low natural frequency of 9 Hz at maximum loadprovides structure-borne noise attenuation in eventhe most difficult environments.

• Low profile housing design permits vertical installa-tion where space is restricted.

• Built-in, failsafe snubbing keeps equipment securein mobile and seismic applications.

• Corrosion-resistant coatings on all metal surfacesoffer extra protection and long-life.

• Damping ratio of 5:1 offers excellent energy dissipation.

FLUSH-TYPE CAPTIVE MOUNTS

TTB Series are flush-type, captive elastomeric mountsthat provide effective shock and vibration control forvertically applied loads. Typical applications includegenerators, compressors, HVAC equipment, produc-tion plant machinery, mobile applications or whereseismic activity is a concern.

The TTB Series housings are low profile designs idealfor installations with space restrictions and vertical loadrequirements. Structural sections are made of carbonsteel for optimum strength and durability. All metal sur-

faces have a corrosion-resistant coating that providesextra protection and long-life.

The elastomeric coatings resist oils, ozone and mostsolvents – providing optimum resilience in most condi-tions. The failsafe design offers built-in snubbing thatprevents the elastomeric elements from coming in con-tact with the housing. The operating temperature rangeof -20oF to +180oF offers continuous operation in allambient conditions.

FEATURES & BENEFITS

APPLICATIONS



• Mobile equipment and machinery


• HVAC equipment

• In-plant machinery

NOTES: TTA Series Mount available for lighter loads. Contact VMC for more information.


TTBSERIES

ELASTOMERICMOUNTS


TECHNICAL

TYPE TTBMODEL # AXIAL STATIC LOAD RANGE, lbs.

TTB-10-500 250 – 500

TTB-10-750 500 – 750

TTB-10-1000 750 – 1000

NOTES: TTA Series Mount available for lighter loads. Contact VMC for more information.



ELASTOMERICMOUNTS

638


RDC2SERIES

APPLICATIONS

• Static load range from 90-550 lbs. offers severalsolutions for lighter load applications.

• Compact housing design permits installation inequipment where space is at a premium.

• Built-in, failsafe snubbing keeps equipment securein mobile and seismic applications.

• Corrosion-resistant coatings on all metal surfacesoffer extra protection and long-life.

• Natural frequency of 12 Hz at maximum load pro-vides structure-borne noise attenuation in even themost challenging applications.

• Damping ratio of 5:1 offers excellent energy dissipation.

FLUSH-TYPE CAPTIVE MOUNTS

RDC2 Series are flush-type, captive failsafe elastomericmounts that provide effective shock and vibration con-trol for portable, marine and stationary equipmentapplications. Typical applications include highway andoff-highway vehicles, power plants, HVAC equipment,generators, compressors and equipment where seis-mic situations are a concern.

The RDC2 Series offer rugged, all-bonded construc-tion. Structural sections are made of carbon steel andsintered metal for long-lasting durability. All metal sur-

faces have a corrosion-resistant coating that providesextra protection and long-life.

The elastomeric coatings resist oils, ozone and mostsolvents – providing optimum resilience in most condi-tions. The failsafe design has a built-in snubbing wash-er that prevents the elastomeric elements from comingin contact with the housing. The operating temperatureof -20oF to +180oF offers continuous operation in allambient conditions.

FEATURES & BENEFITS


RDC2SERIES

ELASTOMERICMOUNTS


APPLICATIONS

• Highway and off-highway vehicles – engines, cabsand radiators






• HVAC Equipment

• Electrical transformers, panel boards and substations

• Seismic installations

• Power plant machinery

TECHNICAL

MODEL # AXIAL STATIC LOAD RANGE, lbs.

RDC2-175 90 – 175

RDC2-300 150 – 300

RDC2-425 225 – 425

RDC2-550 350 – 550



ELASTOMERICMOUNTS

640

0.20 - 0.50”DEFLECTION


R/RDSERIES

APPLICATIONS

• Static load range of 35-4000 lbs. offers solutionsfor a wide range of equipment weights.

• Choice of 0.2” or 0.5” load deflection providesaccurate selection of mounts based on equipment requirements.

• Tapped bolt holes permit more secure installation if required.

• Ribbed mounting base provides a non-skid surface – eliminating the need to bolt machinery to the mounts.

• Elastomer-coated mounts are color-coded for easy identification.

• Contact VMC for other engineered rubber compounds.

FLUSH-TYPE MOUNTS

R/RD Series are elastomeric flush-type mounts thatprovide effective vibration control for all types of gener-al metalworking and production machinery. Typicalapplications include air handling units, businessmachines, instrument panels and machine tools.

The R/RD Series have ribbed, non-skid bases and maybe installed with or without bolting the mounts to themachinery. No bolting is required under machines thathave no lateral or severe vertical motion. The RP/RDPversions offer mounting with a pin for inaccessible bolt holes.

The R/RD Series mounts are embedded in coloredelastomer. This color-coding system permits instantidentification of loading capacities, and prevents instal-

lation errors. The R Series offer deflections to 1/4” andthe RD Series offer deflections to 1/2”. Four differentsizes offer a load capacity range of 10 to 4000 lbs. permounting – offering mounts that may be accuratelyselected for the equipment weight.

The elastomeric coatings resist oils, ozone and mostsolvents – providing optimum resilience in most conditions. Note that these mounts are not inherentlyfailsafe and are recommended for stationary, verticalloads only.

VMC’s weather-resistant compounds are popular withusers of the R/RD line and are now a standard offeringas R-WR/RD-WR mounts. Color-coded molding is afeature of our WR materials.

FEATURES & BENEFITS

APPLICATIONS

• Air handling units

• Compressors, pumps and fans

• Instrument panels

• Machine tools

• Engine gensets

• Transformers

• HVAC equipment


R/RDSERIES

ELASTOMERICMOUNTS


TECHNICAL

TYPE R/RD1CODE MAX DEFLECTION, ins.

MODEL # COLOR LOAD, lbs. R RD

R/RD1 Blue 35 0.20 0.40

R/RD1 Black 45 0.20 0.40

R/RD1 Red 70 0.20 0.40

R/RD1 Green 120 0.20 0.40




R/RD2 Blue 135 0.25 0.50

R/RD2 Black 170 0.25 0.50

R/RD2 Red 240 0.25 0.50

R/RD2 Green 380 0.25 0.50

R/RD2 Grey 550 0.25 0.50


ELASTOMERICMOUNTS

642

R/RDSERIES



R/RD3 Black 250 0.25 0.50

R/RD3 Red 525 0.25 0.50

R/RD3 Green 750 0.25 0.50

R/RD3 Gray 1100 0.25 0.50




R/RD4 Black 1500 0.25 0.50

R/RD4 Red 2250 0.25 0.50

R/RD4 Green 3000 0.25 0.50

R/RD4 Gray 4000 0.25 0.50

ELASTOMERICMOUNTS


7 - 50 LBLOAD RANGE

GR/GCSERIES

APPLICATIONS

• Static load range from 7-50 lbs. offers several solu-tions for low load applications.

• Lightweight housing design permits installation insmaller equipment where space is at a premium.

• All-attitude mounting permits placement in any orientation.


• Two different elastomeric element options meetoperating temperature requirements for almost any application.

• Nominal frequency of 30 Hz provides structure-borne noise attenuation in even the most challeng-ing installations.

PLATE & CUP-TYPE MOUNTS

GR/GC Series includes low profile, elastomeric mountsthat provide superior shock and vibration isolation for avariety of applications, environments and mountingconfigurations. These mounts are ideal for use in very low load applications where portability and acces-sibility are required – electronic equipment, camerasystems, control panels, small motors, and marineequipment systems.

The GR/GC Series mounts are available in both cup or plate configurations. These mounts offer a low profile, lightweight, multi-attitude design for flexibleinstallation in numerous locations. All metal surfaceshave a corrosion-resistant coating for extra protectionand durability.

Two different elastomeric element types are also avail-able in the GR/GC Series. The standard elastomericelement that offers operating temperatures of -20oF to +180oF, and the silicone elastomeric element thatoffers operating temperatures of -80oF to +300oF. Bothelastomers resist oils, ozone and most solvents – pro-viding optimum resilience in difficult conditions.

Special variations to the GR/GC series include flushtop and bottom surfaces, through-hole or countersunkhole on the GR2, and high damped custom color-coded materials. Consult VMC for more details.

FEATURES & BENEFITS

APPLICATIONS

• Avionics and aerospace electronics

• Shipboard and vehicular electronics

• Small motors

• Small fans, blowers, pumps and compressors

• Electronic and computer equipment

• Camera systems



ELASTOMERICMOUNTS

644

GR/GCSERIES

TECHNICAL

TYPE GR2MAX LOAD/ PLATE TYPE/ PLATE TYPE/MOUNT, lbs. TAPPED CORE THRU CORE

5.0 GR2-5T( ) GR2-5H( )

7.0 GR2-7T( ) GR2-7H( )

10.0 GR2-10T( ) GR2-10H( )

Fill in ( ) S – Silicone or N – NeopreneApprox weight – .042 lbs.

TYPE GC2MAX LOAD/ PLATE TYPE/ PLATE TYPE/MOUNT, lbs. TAPPED CORE THRU CORE

5.0 GC2-5T( ) GC2-5H( )

7.0 GC2-7T( ) GC2-7H( )

10.0 GC2-10T( ) GC2-10H( )



GR/GCSERIES

ELASTOMERICMOUNTS


TYPE GR3MAX LOAD/MOUNT PLATE TYPE/ PLATE TYPE/

STATIONARY VEHICULAR TAPPED CORE THRU CORE

15 7 GR3-15T( ) GR3-15H( )

25 11 GR3-25T( ) GR3-25H( )

35 17 GR3-35T( ) GR3-35H( )

50 30 GR3-50T( ) GR3-50H( )


TYPE GR3MAX LOAD/MOUNT PLATE TYPE/ PLATE TYPE/

STATIONARY VEHICULAR TAPPED CORE THRU CORE

15 7 GC3-15T( ) GC3-15H( )

25 11 GC3-25T( ) GC3-25H( )

35 17 GC3-35T( ) GC3-35H( )

50 30 GC3-50T( ) GC3-50H( )




ELASTOMERICMOUNTS

646

7 - 40 LBLOAD RANGE

LDSERIES

APPLICATIONS

• Static load range from 7-40 lbs. offers several solu-tions for low load applications.

• Large deflection capability can dramatically reduceabrupt shock impacts as high as 30g.

• Two different elastomer unit options meet operatingtemperature requirements for even the mostextreme conditions.

• Elastomeric mounts resist oils, ozone and mostsolvents – providing optimum resilience in challeng-ing conditions.

• Central cores accept common screws – offeringsimple installation.

LARGE DEFLECTION MOUNTS

LD Series are mid-frequency isolators with a largedeflection capability that provides both shock andvibration protection for a variety of stationary applica-tions. These mounts can attenuate a 15g, 11-millisec-ond shock to 10g; and a 30g, 11-millisecond shock to16g. The LD Series mounts are ideal for use in applica-tions where vibration and shock are a concern – elec-tronic equipment, camera systems and computers.

Two different elastomeric element types are available inthe LD Series. The standard elastomer that offersoperating temperatures of -20oF to +180oF provideseffective isolation in most applications. The optional

polybutadiene version is used for situations when oper-ating temperatures may drop as low as -65oF. Bothversions are excellent when high amplitude vibrationinputs are expected or large shock deflections areneeded. Both versions also resist oils, ozone and most solvents – providing optimum resilience in difficult conditions.

No special tools are required for installation. The cen-tral cores are tapped to accept common screws. Notethat these mounts are not inherently failsafe. These iso-lated systems do require suitable means of restraint.

FEATURES & BENEFITS

APPLICATIONS

• Computers

• Camera systems

• Electronic equipment

• Small motors

• Pumps and compressors

• Transformers

• Appliances


LDSERIES

ELASTOMERICMOUNTS


TECHNICAL

TYPE LD1MODEL # AXIAL STATIC LOAD MAX., lbs.

LD1-7N 7

LD1-10N 10

LD1-15N 15

Tested with .036 in. D.A. input

TYPE LD2MODEL # AXIAL STATIC LOAD MAX., lbs.

LD2-10N 10

LD2-20N 20

LD2-40N 40

Tested with .036 in. D.A. input



ELASTOMERICMOUNTS

648


MAXI-FLEXSERIES

APPLICATIONS

• Four load ranges from 120 to 360 lbs. per 2”square segment satisfy a wide variety of deflectionrequirements.

• Thin web separating square segments permits easycut-to-fit for required equipment loading.

• Color-coded, oil-resistant elastomer provides sim-ple identification and durability.

E-Z CUT MOUNTING PADS

Maxi-Flex E-Z Cut Series are elastomeric pad-typemounts that provide excellent high frequency soundattenuation in many HVAC equipment and machineshop applications. The E-Z Cut Series are very effec-tive in preventing shock and vibration transmissions innon-critical installations – compressors, pumps,chillers, generators, presses, and transformers.

The E-Z Cut Series are made up of molded elastomer-ic pads in standard size sheets – 18” x 18” x 3/4”

thick, consisting of 2” square segments. A thin webseparates the segments and can easily be cut to fit therequired loading and shape of equipment bases. TheE-Z Cut Series are available in four load ranges from120 to 360 lbs. per 2” square segment. The pads aremolded in color-coded, oil-resistant elastomer for easyidentification and durability.

Weather Resistant (WR) Maxi-Flex is also a standardVMC color-coded product.

FEATURES & BENEFITS

APPLICATIONS

• Air conditioners


• Cooling towers

• Crushers

• Engine gensets

• Textile machinery

• Hammers

• Transformers

• Punch Presses

• Shearing equipment

• Lathes

• Pumps & compressors

• Fans

• Chillers

• General industrialmachinery

TECHNICAL

COLOR RECOMMENDED LOAD RATINGSCODE PER 2" X 2" SEGMENT, lbs.

Blue 120

Black (standard) 180

Red 240

Green 360

NOTE: For increased deflection, Maxi-Flex Pads can be stacked with 16 gauge shimsseparating the layers


ELASTOMERICMOUNTS



CORK-FLEXSERIES

APPLICATIONS

• Pure cork granules that are compressed andbaked under pressure form very durable andresilient boards with accurately controlled density.

• Two density capacities and several different thick-nesses provide engineers with a wide range of padoptions to meet specific requirements.

• Cork construction resists oils, water and acids nor-mally encountered in commercial and industrialapplications.

• Load ranges from 1400 to 8000 lbs. provide isola-tion under a wide range of heavy load applications.

MACHINERY CORK MOUNTING PADS

Cork-Flex Series are machinery cork pads that provide excellent high frequency sound attenuationunder extremely heavy load applications. The Cork-Flex Series are very effective in preventing shock and vibration transmissions in processing equipment,cooling towers, hammers, air conditioners, and textile machinery.

The Cork-Flex Series consists of pure cork granulesthat are compressed and baked under pressure with

accurately controlled density. Cork-Flex pads areoffered in a 12” x 36” standard sheet size in standardor heavy density capacities. Cut to size is also available.

The Cork-Flex Series can be installed on the floor,below the floor line, or with a retaining “curb” for equip-ment that is prone to “walk”. Cork-Flex pads resist theoils, water and acids normally encountered in commer-cial and industrial applications.

FEATURES & BENEFITS

APPLICATIONS



• Cooling towers

• Crushers

• Engine gensets


• Hammers

• Transformers

• Punch Presses


• Lathes

• Pumps

• Compressors

• Fans

• Chillers


TECHNICAL

DENSITY WEIGHT, lbs./ LOAD CAPACITY, THICKNESSDESIGNATION BOARD, ft. lbs./sq. ft. AVAILABLE, ins.

Standard 1.25-1.35 1400-4300 1, 2, 3

Heavy 1.5-1.7 4300-8000 1, 2, 3



ELASTOMERICMOUNTS

650

UP TO 4800 LBLOAD RANGE

CORK-RIB

SERIES

APPLICATIONS

• Load ranges up to 120 psi provide isolation undera wide range of heavy load applications.

• Compressed cork centers bonded between twolayers of waffle-shaped elastomer offer superiorsound attenuation and vibration isolation.

• Waffle-shaped outer pads offer exceptional gripping and require no bolting or cementing inmost applications.

• Wide range of product sizes and a steel plateoption provide a variety of pad choices to meetspecific requirements.

• Cork and elastomeric construction resists oils,water and acids normally encountered in commer-cial and industrial applications.

CORK & WAFFLE EMBOSSED MOUNTING PADS

Cork-Rib Mounts are close-grained cork pads that pro-vide the highest degree of sound attenuation andvibration isolation attainable in a pad-type mount. TheCork-Rib Pads are very effective in heavy load situa-tions – processing equipment, hammers, punch press-es and textile machinery.

Cork-Rib Pads consist of 1/2” thick compressed corkcenters bonded between two layers of 1/4” thick waf-fle-shaped elastomer. Two types are available – Cork-Rib Pads and Cork-Rib Flex-Plates. Cork-Rib Pads are1” thick and are available in sheets of 24” x 36”, 18” x36” and 18” x 18”. Smaller pads are also available.

Cork-Rib Flex-Plates are for use in applications whereconcentrated loads exceed a maximum bearing of 120

psi. The Flex-Plates add a load-spreading steel platebetween the elastomeric waffle layer and the cork cen-ter. The strongest Flex-Plate design can handle 4800lbs. of static load.

Cork-Rib Pads offer exceptional gripping qualities –eliminating the need for bolting or cementing pads tothe equipment or to the floor. The Flex-Plate types alsooffer bolt holes and isolation washers for extra security,or extra thick steel plates with counter-bored holes forself-leveling machinery. All Cork-Rib mountings resistthe oils, water and acids normally encountered in com-mercial and industrial applications.

FEATURES & BENEFITS


CORK-RIB

SERIES

ELASTOMERICMOUNTS


APPLICATIONS



• Cooling towers

• Crushers

• Engine gensets


• Hammers

• Transformers

• Punch Presses


• Lathes

• Pumps

• Compressors

• Fans

• Chillers

• General industrial machinery

TECHNICAL

DIMENSIONS IN INCHESMAX. LOAD, lbs. HEIGHT-TYPE

MODEL # STEADY IMPACT* LENGTH WIDTH AA BB CC

AA-4, BB-4, CC-4 200 160 2 2 1 1/2 1 1/4 1 3/8

AA-9, BB-9, CC-9 450 360 3 3 1 1/2 1 1/4 1 3/8

AA-16, BB-16, CC-16 800 640 4 4 1 1/2 1 1/4 1 3/8

AA-24, BB-24, CC-24 1200 960 6 4 1 1/2 1 1/4 1 1/2

AA-36, BB-36, CC-36 1800 1440 6 6 1 1/2 1 1/4 1 1/2

AA-48, BB-48, CC-48 2400 1920 8 6 1 1/2 1 1/4 1 1/2

AA-64, BB-64, CC-64 3200 2560 8 8 1 5/8 1 3/8 1 5/8

AA-80, BB-80, CC-80 4000 3200 10 8 1 5/8 1 3/8 1 5/8

AA-96, BB-96, CC 96 4800 3840 12 8 1 5/8 1 3/8 1 5/8

*Use for Hammers, Shears, Punch Presses, Mills, etc.NOTE: Special Cork-Rib Flex-Plate Sizes & Capacities on request.



ELASTOMERICMOUNTS

652


SHEAR-FLEXSERIES

APPLICATIONS

CROSS-RIB MOUNTING PADS

Shear-Flex are elastomeric pad-type mounts that pro-vide excellent high frequency sound attenuation inmany HVAC equipment and machine shop applica-tions. Shear-Flex Pads are very effective in preventingshock and vibration transmissions in non-critical instal-lations – air conditioners, compressors, fans, ham-mers, generators, presses, and pumps.

Shear-Flex Pads are molded elastomeric pads in aresilient cross-rib design. Standard sheet sizes are 18” x 18” x 3/4” thick and 18” x 36” x 3/4” thick. Thesegments can easily be cut to fit the required loading

and shape of equipment bases. Shear-Flex Pads areavailable in three load ranges from 20 to 100 psi. Thepads are molded in color-coded, oil-resistant elastomerfor easy identification and durability.

Shear-Flex Pads offer exceptional gripping – eliminatingthe need for bolting or cementing in most applications.Adhesive is available for applications having severehorizontal thrust. Shear-Flex Pads may also be used inmultiple layers to increase deflection and are availablepre-assembled, cut to size, with steel plates cementedbetween the layers.




• Cooling towers

• Crushers

• Engine gensets


• Hammers

• Transformers

• Punch Presses


• Lathes


• Fans

• Chillers



• Three load ranges from 20 to 100 psi satisfy a widevariety of deflection requirements.

• Resilient cross-rib design provides exceptional grip-ping that requires no bolting or cementing.


• Multiple layer installation offers extra deflection andload range options.

TECHNICAL

SHEAR-FLEXSERIES

ELASTOMERICMOUNTS


DIMENSIONS IN INCHESMAX. LOAD, lbs. HEIGHT-TYPE

MODEL # STEADY IMPACT* LENGTH WIDTH A B C

A-4, B-4, C-4 280 200 2 2 7/8 5/8 3/4

A-9, B-9, C-9 630 450 3 3 7/8 5/8 3/4

A-16, B-16, C-16 1120 800 4 4 7/8 5/8 3/4

A-24, B-24, C-24 1680 1200 6 4 7/8 5/8 7/8

A-36, B-36, C-36 2520 1800 6 6 7/8 5/8 7/8

A-48, B-48, C-48 3360 2400 8 6 7/8 5/8 7/8

A-64, B-64, C-64 4480 3200 8 8 1 3/4 1

A-80, B-80, C-80 5600 4000 10 8 1 3/4 1

A-96, B-96, C-96 6720 4800 12 8 1 3/4 1

*Use for Hammers, Shears, Punch Presses, Mills, etc.NOTE: Special Flex-Plate Sizes & Capacities on request.



ELASTOMERICMOUNTS

654

1.00”DEFLECTION

1000 PSILOAD RANGE

FABRI-FLEXSERIES

APPLICATIONS

• Load ranges to 1000 psi provide isolation underextremely heavy load applications.

• Multiple-layered, cotton duck fabric thoroughlyimpregnated and bonded with an elastomeric com-pound offers excellent durability.

• Standard thickness ranges from 1/8” to 1” for useunder a wide range of machinery.

• Optional washer design is ideal for eliminatingmetal-to-metal contact between steel boltings andsteel bearing plates.

FABRIC MOUNTING PADS

Fabri-Flex are isolation pads with 1000 psi loadingcapability for excellent high frequency sound attenua-tion under extremely heavy load applications.

Fabri-Flex Pads consist of multiple layers of high quali-ty, cotton duck fabric thoroughly impregnated andbonded together by a specially formulated elastomeric

compound. Standard thickness ranges from 1/8” to 1”and the pads are cut to size requirements.

Fabri-Flex Pads are also available in a washer design.Manufactured of the same material, the washers aredesigned to eliminate metal-to-metal contact betweensteel bolting and steel bearing plates.

FEATURES & BENEFITS

APPLICATIONS



• Cooling towers

• Crushers

• Engine gensets


• Hammers

• Transformers

• Punch Presses


• Lathes


• Fans

• Chillers


FABRI-FLEX WASHERS – DIMENSIONSWASHER SIZE WASHER SIZE

BOLT SIZE, ins. ID. OD. BOLT SIZE, ins. ID. OD.

3/8 7/16 1 3/4 13/16 2

1/2 9/16 1 3/8 7/8 15/16 2 1/4

5/8 11/16 1 3/4 1 1 1/16 2 1/2

TECHNICAL

NOTE: VMC can mold almost any elastomer into any of its elastomer mount products.Special materials include, but are not limited to, natural rubber, Weather Resistant (WR),High Damped Silicone, Extreme High Temperature (EHT) Silicone, Nitrile and EPDM.Many of these are color coded by hardness.

ELASTOMERICMOUNTS


60 - 120 PSILOAD RANGE

ELASTO-GRIPSERIES

APPLICATIONS

WAFFLE-EMBOSSED MOUNTING PADS

Elasto-Grip Pads are waffle-embossed mounts thatprovide excellent high frequency sound attenuation inmany HVAC equipment and machine shop applica-tions. The Elasto-Grip Pads are very effective in pre-venting shock and vibration transmissions in low tomedium load installations – engines, compressors,fans, generators, punch presses, and pumps.

Elasto-Grip Pads are made of molded elastomer in aresilient waffle design. This unique design providesexcellent tear and abrasion resistance with extremely

high tensile and compressive strength. Sheets areavailable with waffle embossing on one side of 1/4”thick pads, or with waffle embossing on both sides of 1/2” thick pads. Sheet sizes are available up to 24” x 36”.

Elasto-Grip pads offer exceptional gripping – eliminat-ing the need for bolting or cementing in most applica-tions. The pads are resistant to water, oils, cleaningcompounds, heat and other environmental factors nor-mally found in manufacturing and processing plants.

• Load ranges from 60 to 120 psi satisfy a wide vari-ety of deflection requirements.

• Waffle design provides excellent tear and abrasionresistance with extremely high tensile and com-pressive strength.

• Strong waffle-embossed design provides exceptional gripping that requires no bolting or cementing.


FEATURES & BENEFITS

APPLICATIONS



• Cooling towers

• Crushers

• Engine gensets


• Hammers

• Transformers

• Punch Presses


• Lathes


• Fans

• Chillers


TECHNICAL

CAPACITY LOAD RANGE MAX. SHEETTYPE THICKNESS lbs./sq. in. SIZE, ins.

Standard 0.25”, waffle embossed up to 60 24x36Capacity – one side only

High 5”, waffle embossed60-120 24x36Capacity – both sides

NOTE: Suggested loadings for engines, compressors, fans, etc. is 50 lbs./sq. in.Suggested loadings for punch presses, shears, etc. is 40 lbs./sq. in.



ELASTOMERICMOUNTS

656

260 - 12,000 LBLOAD RANGE

ELASTO-RIB

SERIES

APPLICATIONS

• Load ranges from 260 to 12,000 psi satisfy a widevariety of deflection requirements.

• Installation options using cement or bolts provide easy set-up for a variety of machinery requirements.


• Non-skid top plate provides simple installationwithout any fastening.

CROSS-RIB MOUNTING PADS

Type 'EU' universal Elasto-Rib Damper is furnishedwith a load distributing steel plate permanently bondedto the Elasto-Rib pad, for use where the machine leg issmaller than the area of Elasto-Rib required, or whenmounting without built-in levelling is needed.Installation is simple – the machine may normally beplaced on the damper's non-skid top plate without any

fastening or may be cemented (see arrangement 1 inTechnical section), or bolted through the offset holeprovided (arrangement 2). Resilient washers requiredfor arrangement 2 are furnished at no charge with allEU dampers. Machines having built-in levelling devicesare installed as shown in arrangement 3.

FEATURES & BENEFITS

APPLICATIONS



• Cooling towers

• Crushers

• Engine gensets


• Hammers

• Transformers

• Punch Presses


• Lathes

• Pumps

• Compressors

• Fans

• Chillers

• General industrial machinery


ELASTO-RIB

SERIES

ELASTOMERICMOUNTS


TECHNICAL


MAX. LOAD, lbs. DIMENSIONS, ins.MODEL # NON-IMPACT IMPACT† A B C D

EU-4 390* 260 2 3/4 2 1/2 3/8 5/8

EU-5 545* 362 4 2 1/2 1 5/8

EU-8 785 523 2 3/4 2 1/2 5/8 5/8

EU-10 1090 728 4 2 1/2 1 5/8

EU-14 1440* 960 6 4 1 1/2 5/8

EU-21 2100* 1400 7 5 2 5/8

EU-28 2880 1920 6 4 1 1/2 5/8

EU-42 4200 2800 7 5 2 5/8

EU-60 6000* 4000 12 8 4 3/4 3/4

EU-85 8500 5660 10 7 3 1/2 3/4

EU-120 12,000 8000 12 8 4 3/4 3/4

†For machines like punch presses, shears, etc.*Standard Capacity Elasto-Rib. All others, High Capacity


ELASTOMERICMOUNTS

658

0.25 - 0.50”DEFLECTION


RH/RHDSERIES

APPLICATIONS

• Static load range of 35-4000 lbs. offers solutionsfor a wide range of suspended equipment.

• Choice of deflection provides accurate selection ofmounts based on equipment requirements.

• Hanger capacities can be mixed to accommodateequipment with uneven weight distribution.

• Elastomer-coated mounts are color-coded for easy identification.

• Steel housing provides durability and stability.

ELASTOMERIC HANGERS

RH/RHD Series elastomeric isolation hangers offer costeffective solutions for the isolation of suspended equip-ment. These hangers are designed to solve high fre-quency attenuation problems in a protected space orradiating from that space to surrounding locations.These isolators are ideal for suspended piping, duct-work, air handling units, and HVAC equipment.

The equipment and piping are supported from vibrationhangers consisting of a steel box with an internal elas-tomeric element. The RH Series offer deflections to1/4” and the RHD Series offer deflections to 1/2”. Fourdifferent sizes provide load capacity ranges from 10 to4000 lbs. – offering accurate hanger selection even forunits with unequal weight distribution.

The RH/RHD Series isolation elements are molded ofcolor-coded elastomer – permitting instant identificationof loading capacities. These units are molded with anintegral bushing to prevent the elastomeric elementsfrom coming in contact with the isolator housings. Allelements are molded in durometers or hardness tomatch actual assigned loads.

FEATURES & BENEFITS

TECHNICAL

Note: For seriesRHD Hangers,double thedeflectionshown for givenload.


RH/RHDSERIES

ELASTOMERICMOUNTS


TYPE RH/RHD - DIMENSIONS, ins.MODEL # L W H A* AD** C

RH-1 OR RHD-1 2 1/4 2 3 1 1/8 1 3/8 3/8

RH-2 OR RHD-2 3 2 1/4 4 1/2 1 3/8 1 7/8 5/8

RH-3 OR RHD-3 3 3/4 3 1/4 6 1/4 2 3 1/8 3/4

RH-4 OR RHD-4 4 1/2 4 8 3/16 2 3 1/8 1

APPLICATIONS

• Air handling units

• Suspended ceilings

• Fans

• Piping

• Ductwork

DEFLECTION, ins.MODEL # COLOR CODE MAX. LOAD, lbs. RH RHD

RH-1 OR RHD-1 BLUE 35 0.20 0.40

RH-1 OR RHD-1 BLACK 45 0.20 0.40

RH-1 OR RHD-1 RED 75 0.20 0.40

RH-1 OR RHD-1 GREEN 120 0.20 0.40

RH-2 OR RHD-2 BLACK 170 0.25 0.50

RH-2 OR RHD-2 RED 240 0.25 0.50

RH-2 OR RHD-2 GREEN 380 0.25 0.50

RH-2 OR RHD-2 GRAY 550 0.25 0.50

RH-3 OR RHD-3 BLACK 250 0.25 0.50

RH-3 OR RHD-3 RED 525 0.25 0.50

RH-3 OR RHD-3 GREEN 750 0.25 0.50

RH-3 OR RHD-3 GRAY 1250 0.25 0.50

RH-4 OR RHD-4 BLACK 1500 0.25 0.50

RH-4 OR RHD-4 RED 2250 0.25 0.50

RH-4 OR RHD-4 GREEN 3000 0.25 0.50

RH-4 OR RHD-4 GRAY 4000 0.25 0.50

*Dimension “A” is for singledetection type RH elements.

**Dimension “AD” is for doubledeflection type RHD elements.

TYPE RHE/RHDE - DIMENSIONS, ins.MODEL # W H* HD** A C

RHE-1 OR RHDE-1 3/4 7/8 1 1/4 1 1/4 3/8

RHE-2 OR RHDE-2 2 3/8 1 1/4 1 3/4 1 3/4 5/8

RHE-3 OR RHDE-3 3 1/2 1 3/4 2 7/8 2 1/2 3/4

RHE-4 OR RHDE-4 4 1 3/4 3 4 1

DEFLECTION, ins.MODEL # COLOR CODE MAX. LOAD, lbs. RH RHD

RHE-1 OR RHDE-1 BLUE 35 0.20 0.40

RHE-1 OR RHDE-1 BLACK 45 0.20 0.40

RHE-1 OR RHDE-1 RED 75 0.20 0.40

RHE-1 OR RHDE-1 GREEN 120 0.20 0.40


RHE-2 OR RHDE-2 RED 240 0.25 0.50


RHE-2 OR RHDE-2 GRAY 550 0.25 0.50


RHE-3 OR RHDE-3 RED 525 0.25 0.50


RHE-3 OR RHDE-3 GRAY 1250 0.25 0.50

RHE-4 OR RHDE-4 BLACK 1500 0.25 0.50

RHE-4 OR RHDE-4 RED 2250 0.25 0.50

RHE-4 OR RHDE-4 GREEN 3000 0.25 0.50

RHE-4 OR RHDE-4 GRAY 4000 0.25 0.50

*Dimension “H” is for singledetection type RHE elements.

**Dimension “HD” is for double deflection type RHDE elements.



ELASTOMERICMOUNTS

660

DATAANALYSIS

FORM

ENGINE GENSET ISOLATION DATA ANALYSIS FORM

CONTACT INFORMATIONCompany

Contact/Title

Address

City State Zip

Mail Drop Email

Phone Fax

TECHNICAL REQUIREMENTSGENSET (Make and Model)

Equipment Operating Speed Total Weight (wet)

Temperature Range (Operating) (Non-Operating)

Stationary Seismic Non-Critical

For Seismic Applications:Horizontal Acceleration (If Known)

If Not Known (Local Building Code)

Seismic Zone

Installation Location (City, State, Zip)

Other Relative Seismic Information (Building Height, Installed Height, Building Type, etc.)

Please include equipment cut showing CG and mount locations or completely fill out page 661.

DATAANALYSIS

FORM

ELASTOMERICMOUNTS


CG LOCATIONCGx CGy CGz

MOUNT LOCATIONS, P1 THRU PnP1x P1y

P2x P2y

P3x P3y

P4x P4y

P5x P5y

P6x P6y

P7x P7y

P8x P8y

P9x P9y

P10x P10y

P11x P11y

P12x P12y


ELASTOMERICMOUNTS

662

DATAANALYSIS

FORM

ENGINE ISOLATION DATA ANALYSIS FORM

CONTACT INFORMATIONCompany

Contact/Title

Address

City State Zip

Mail Drop Email

Phone Fax

TECHNICAL REQUIREMENTSENGINE (Make and Model)

Number of Cylinders Total Weight (wet)

Operating Speed Range Idle Max

Rated Horsepower Or Max. Torque

2-Stroke 4-Stroke Firing Order Fuel

Transmission (Make and Model) Total Weight

Generator (Make and Model) Total Weight

Other (Specify) Total Weight

Moments of Inertia (About Composite C.G.)* IXX

IYY IZZ

Temperature Range (Operating) (Non-Operating)

Application Environment

Comments

*If moments of inertia are not known, a drawing of the engine with associated equipment is required.

DATAANALYSIS

FORM

ELASTOMERICMOUNTS


X1 (Transmission C.G.) Z1 (Transmission C.G. Offset)

X2 (Rear Mount Location) Z2 (Rear Mount Spread)

X3 (Engine C.G.) Z3 (Engine C.G. Offset)

X4 (Front Mount Location) Z4 (Front Mount Spread)

X5 (Tailstock Mount – If Applicable) L1

Y1 (Transmission C.G.) L2

Y2 (Rear Mount Location) W1

Y3 (Engine C.G.) W2

Y4 (Front Mount Location) H1

Y5 (Application)

Korfund Elastomeric Isolator Catalog

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Transcript of Korfund Elastomeric Isolator Catalog