A-1

CbN Series

Industries Food Processing Warehousing Parcel and Package Sortation Water/Wastewater Treatment

Applications Positive Displacement Pumps Unit Handling Conveyors Oven Conveyors Low Speed Fans Industrial Door Openers

CbN Helical In-lineGearmotors andSpeed Reducers

A-2

1000SERIESCbN

CbN Series

DC Permanent Magnet

AC Three Phase

AC Single Phase

1/12to3/4HPdesigns 60Hz208-230/460&575VAC 50Hz380VAC Onetofourreductionstages TEFCenclosure(meetsIP55) FOmotorconduitbox Foot,faceorflangedmounting Cutandgroundhelicalgearing Factoryfilledwithsyntheticoil Doublelippedoilseals Ballbearingsthroughout ApprovedbyUL*,CSAandCE ClassFinsulation

1/12to1/2HPdesigns Permanentsplitcapacitordesigns 60Hz,120/240VAC TEFCenclosure(meetsIP55) FOmotorconduitbox Capacitorsmountedinbox Foot,faceorflangedmounting Cutandgroundhelicalgearing Factoryfilledwithsyntheticoil Ballbearingsthroughout ApprovedbyUL,CSA,CE

1/12to3/4HPdesigns 90voltPMmotor Onetofourreductionstages TEFC**enclosure(meetsIP44) FOmotorconduitbox Foot,faceorflangedmounting Cutandgroundhelicalgearing Factoryfilledwithsyntheticoil Doublelippedoilseals Ballbearingsthroughout CSAandCEcompliant **56framesareTENV

In-line Gearmotors

*ULisbelievedtobeatradenameand/ortrademarkofUnderwritersLaboratories,Inc.andisNOTownedorcontrolledbyEmersonPowerTransmission

EmersonPowerTransmissionCorporationcannotanddoesnotrepresentorwarranttheaccuracyofthisinformation.

A-132

20003000

SERIESCbN

CbN Series Type CbN Helical In-lineSeries 2000/3000 Speed ReducerFeatures...

Design Features

1

3

5

1. Gearreducersaredeliveredfactoryfilledwithsynthetichydrocarbonlubricant.2. Castone-piecehousing/endshieldconstructionprovidesaddedstrengthandrigidity.3. Series3000C-Facereducersutilizecompactquillconstructionwithtwobearingsforsupportandthequill

hasanon-metalliclinertoeliminatefretting.

4. Oversizedplugsandmagneticdrainplugmakenormalmaintenanceeasier.5. Allgearsarekeyedtoshaftsandfinishedtoprovidequietoperation.6. Oversizedbearingsareusedtohelpprovidelongerlife.

4

6

4

2

A-133

20003000

SERIESCbN

CbN Series

Section PageMountingVersatilityandSizeRange..............................................................................................A-134-A-135Reducer Selection.......................................................................................................................................A-136Overhung Load Capacities..........................................................................................................................A-137CatalogNomenclature.................................................................................................................................A-138MountingPositions......................................................................................................................................A-140ReducerTypesandAvailability....................................................................................................................A-141AGMAApplicationTables...............................................................................................................A-142-A-144Lubrication......................................................................................................................................A-244-A-245ReducerSelectionTables...............................................................................................................A-146-A-163Thermal Ratings..........................................................................................................................................A-164Modifications................................................................................................................................................A-165DimensionPrints(inch) C-FaceReducers-Footed.......................................................................................................A-166-A-182 C-FaceReducers-Flanged.....................................................................................................A-183-A-199 C-FaceReducers-FootwithFlange....................................................................................................A-200 ScoopMountReducers-Footed.............................................................................................A-201-A-206 ScoopMountReducers-Flanged...........................................................................................A-207-A-211 InputShaftReducers-Footed.................................................................................................A-212-A-218 InputShaftReducers-Flanged...............................................................................................A-219-A-227 TopMountReducers-Footed..................................................................................................A-228-A-230 TopMountReducers-Flanged................................................................................................A-231-A-233Dimension Print Supplements B14FaceMount.......................................................................................................................A-234-A-235 MetricOutputShafts................................................................................................................A-236-A-242Reducer Weights.........................................................................................................................................A-243StandardTermsandConditionsofSale........................................................................................................F-15

Table of Contents

Speed Reducers

A-134

20003000

SERIESCbN

CbN Series

Speed Reducers

Mounting Versatility and Size Range

FootMount1,2,3stagesFrames09

Max.150,00in.lbs.

FaceMount1,2,3stagesFrames05

Max.27,000in.lbs.

FlangeMount1,2,3stagesFrames08

Max.88,000in.lbs.

FootMount4,5,6stagesFrames29

Max.150,000in.lbs.

FlangeMount4,5,6stagesFrames28

Max.88,000in.lbs.

NEMAC-Face56Cto326TCFrames09

InputShaftFrames09

TopMountFrames2-5*56to250T

ScoopMountFrames2-9*56to365T

C-FaceMotorsFrames56-326TC

BackstopOption**

* Excludingframes2and3singlestageandframes2-5combined4and5stageproduct.Refertodimensionpagesforavailability.**Frames1-9:1,2,and3stages.Frames4-9:4and5stagesonly.

A-135

20003000

SERIESCbN

CbN SeriesSpeed Reducers

C-Face

TopMount

Input Shaft

A-136

20003000

SERIESCbN

CbN Series

1. Application Data Rotary lobe pump, 10+ hours per

day, speed reducer direct coupledtoload,footmounted,1.25servicefactor.

Motorrating: TEFC,230/460volt,71/2HP,1750RPM,213TCframefooted1.

Outputspeed: 280RPM

2. Size Selection

3. Catalog Designation (see"ordering"pageA-138)

CbN3242SB36.3U213TC

280 RPM required outputEquals 6.3:1 ratioPM SF = P7.5 HP x 1.25 = 9.4 HP3242 (10.45 HP) > 9.4 HP pg. A-146Select CbN 3242

(There are no thermal or OHL considerations.)

Speed Reducers

Selection

1. Input HP Basedonapplicationdata.2. Speed/Ratio Obtaineitherdesiredoutputspeed(RPM)orgearbox

ratiobasedonapplication.3. Service Factor Determinetherequiredservicefactorusingeither

theAGMAapplicationclassificationchart(pages A-142toA-144),orthedurationofoperation,load

type,anddrivetypewiththetablebelow:

Step 1 Locatespeedreducerselectiontables(pagesA-146toA-163)basedoninputspeedtogearbox.

Step 2 Choosethenominalratioappropriateforthespeedsrequired.

Step 3 Selectthegearunitsizeforthechosenratioandthe

known input speed so that the mechanical power rating P(hp)satisfiesthefollowing:

P PmSF

P =mechanicalpowerrating(hp)ofgearbox

Pm =motorpower(hp)

SF =requiredservicefactorNote:Sizeselectionbasedonabsorbedpower(Pa)orabsorbedtorque(Ta)atthelowspeedshaftinsteadofmotorpower(Pm)isallowedwhentheformerisknownwithsufficientaccuracyandifthenumberofstartoperationsislimited.WhenTaisappliedinsizeselection,verifyif:

T TaSF

T = torquerating(in.lbs.)atlowspeedshaftTa = absorbedtorque(in.lbs.)atlowspeedshaft (basedoninputhp)SF = requiredservicefactor

Size Selection (cont.)Selection Information

Size Selection

Example

Step 4 Verifyoverhungloadratingswhererequired (seepageA-137).

6.1 3242Example

10.45 2208

Prime Mover

Hours of Operation

Uniform Load U

Moderate Shock Load M

Heavy Shock Load V

Electric Motor

0 - 3 0.80 1.00 1.503 - 10 1.00 1.25 1.7510 - 24 1.25 1.50 2.00

Internal Combustion

Engine

0 - 3 1.00 1.25 1.753 - 10 1.25 1.50 2.0010 - 24 1.50 1.75 2.25

1 CbNframe3242with210TCmotorrequiredafootedmotorwithmotoroutboardfootsupported.

A-137

20003000

SERIESCbN

CbN SeriesWhen a sprocket, sheave, pulley or pinion ismounted onanyshaftofareducer,itisnecessarytocalculatetheover-hungload.Thiscalculatedloadmustbecomparedwiththegearboxcapacitylistedtomakesurethegearboxwillnotbeoverloaded.Tocalculatetheoverhungloadyouneedtoknowthetorqueorhorsepoweratthetake-offshaftandthelocationalongtheshaftatwhichtheloadisapplied.

A.Iftorqueisknown: OHL =

B.Ifhorsepowerisknown: OHL =

T x K x LLFr

Where: OHL=Overhungload(pounds) T=Torque(in.lbs.) r=Radiusofdrivingmember(in.) HP = Horsepower K=Drivetypefactor LLF=Loadlocationfactor

63025 x HP x K x LLFRPM x r

Speed Reducers

Overhung Load Capacities

OHL capacities are calculated at gear capacity rounded to theclosestmotorHPatmidshaft.ForcapacitywhenHPisk