A N T I - V I B R A T I O N

Product information updated April 2016 and subject to change. Please contact Sales for the latest prices and availability.

Self Compensating Shock AbsorbersM8 x 0.75 - M12 x 1, 5 - 10mm Stroke

RMSASTCMF

Ø85

A

25

12

Ø4.5

Ø4.5 25.438

MaterialBody: Steel with black oxide finish, Stainless Steel or Chrome plated piston rod.

PerformanceOperating Temperature Range: -10°C to +70°C.

Other Info.Important: Provide mechanical stop 0.5mm before end of stroke.

STC Type Stop Collar MF Type Universal Mount

Return Spring

Check Valve Piston Orifices

Oil Accumulator

A

AFD

B max

Stroked2 l1

d1

d4

C max

PartNumber

Price Each 1 - 9

ThreadA l2 d3

STOP COLLARSSTC8STC10STC12

UNIVERSAL MOUNTSMF-10MF-12

£6.22£6.22£7.56

£18.97£19.97

M8 x 0.75 M10 x 1 M12 x 1

M10 x 1 M12 x 1

122020

--

11.014.316.0

--

RMSA-80RMSA-85RMSA-100RMSA-150RMSA-200RMSA-250RMSA-300RMSA-350

5 5 5 5 8 81010

0.40.70.71.01.01.52.02.5

1,0001,4002,4003,6003,6003,6006,0006,000

0.30.60.61.00.81.41.62.0

35587

101530

22333355

556666

1010

0.30.30.40.40.40.40.50.5

0.0120.0120.0150.0150.0180.0180.0310.031

£50.83£50.83£60.99£60.99£63.53£63.53£75.39£75.39

PartNumber Stroke

Per CycleW3

Per HourW4

MinKg

MaxKg

MinN

MaxN

Rod ResetTime(s)

UnitWeight

KgPrice Each

1 - 9

Max. Energy Capacity Nm Effective Weight me Return Spring Force

PartNumber

RMSA-80RMSA-85RMSA-100RMSA150RMSA-200RMSA-250RMSA-300RMSA-350

555588

1010

M8 x 0.75M8 x 0.75

M10 x 1.00M10 x 1.00M10 x 1.00M10 x 1.00M12 x 1.00M12 x 1.00

3737393953536868

1010121215151818

2222222233334545

2.02.03.03.03.03.03.53.5

7.27.28.88.88.88.8

10.810.8

66666688

22333344

1111131313131414

2.5°2.5°2.5°2.5°2.5°2.5°2.5°2.5°

Stroke A B C D d1 d2 d4 l1 AF

Max. Side Load

Angle

Discounts: 10+ -5% | 25+ -10% | 50+ -15% | 100+ -20%

Discounts: 10+ -5% | 25+ -10% | 50+ -15% | 100+ -20%

l2

A d3

A N T I - V I B R A T I O N

Product information updated April 2016 and subject to change. Please contact Sales for the latest prices and availability.

Adjustable Shock AbsorbersM20 x 1.5 - M25 x 1.5, 19 - 40mm Stroke

RMSASTCMF

MaterialBody: Steel with black oxide finish Piston Rod: Stainless Steel

PerformanceOperating Temperature Range: -12°C to +90°C.

Other Info.Adjustment: The adjustment range is calibrated from 0 to 9. The adjustment knob is locked with a lock screw which must be slackened with a 1.5mm Hex key before carrying out adjustment (take care not to completely remove and lose the lock screw as it is not held captive). After installing the shock absorber, cycle the machine a few times and alter the adjustment so that optimum deceleration is achieved (i.e. no abrupt change in the lead velocity at the beginning or the end of this shock absorber stroke).These units are self-contained and may be installed in any mounting position.Check effective weight of application falls within range of unit.Integral mechanical stop is built into front end of units. An optional stop collar can be installed with this device if desired.

MF Type Universal MountSTC Type Stop CollarØ10

10

A 3525.5

16

Ø5.5

Ø5.5 3547

AF2

A

14

d4 d6

13l2

Standard unit inc. locknut and button

AF

EF

B max

A

C D

AF1d2

Strokel1

d1

d3

PartNumber

Price Each 1 - 9

AThread d6

STOP COLLARSSTC20STC25UNIVERSAL MOUNTSMF-20MF-25

£11.49£18.97

£25.27£30.81

M20 x 1.5M25 x 1.5

M20 x 1.5M25 x 1.5

2532

--

RMSA-500RMSA-600RMSA-900

19.025.440.0

2568

100

45,00068,00090,000

2.35.0

14.0

2261,3602,040

51010

103035

0.10.20.4

0.130.310.40

£121.35£189.17£274.64

PartNumber Stroke

Per CycleW3

Per HourW4

Min.Kg

Max.Kg

Min.N

Max.N

RodReset

Time(s)

UnitWeight

KgPrice Each

1 - 9

Max. Energy Capacity Nm Effective Weight me Return Spring Force

PartNumber

RMSA-500RMSA-600RMSA-900

19.025.440.0

M20x1.5M25x1.5M25x1.5

118143189

13.216.516.5

121212

111111

4.64.64.6

4.86.36.3

16.822.422.4

172323

20.525.525.5

253232

688

254545

121616

81010

243030

182323

222727

2°2°1°

Stroke A B C D E F d1 d2 d3 d4 d5 l1 l2 l3 l4 AF AF1 AF2

Max. Side Load

Angle

Discounts: 10+ -5% | 25+ -10% | 50+ -15% | 100+ -20%

Discounts: 10+ -5% | 25+ -10% | 50+ -15% | 100+ -20%

A N T I - V I B R A T I O N

TE

CH

NIC

AL

Product information updated April 2016 and subject to change. Please contact Sales for the latest prices and availability.

Shock AbsorbersFormulae & Calculations

1. Mass without propelling forceFormulaeW1 = m • v2 • 0.5W2 = 0W3 = W1 + W2W4 = W3 • CVD = vme = m

W1 = 100 • 1.52 • 0.5 = 113NmW2 = zero W3 = 113 + 0 = 113Nm W4 = 113 • 500 = 56,500Nm/hrme = m = 100kg

Example 1m = 100gv = 1.5m/sC = 500/hs = 0.05 m (chosen)

Choose from capacity chart: Model MC1202 M-2 self-compensating alternative: Model A1/2 x 2 adjustable.

2. Mass with propelling forceFormulaeW1 = m • v2 • 0.5W2 = F • sW3 = W1 + W2W4 = W3 • CVD = vme = 2 • W3 VD2

W2 = (F - m • g) • sW2 = (F + m • g) • s

W1 = 36 • 1.52 • 0.5 = 41NmW2 = 400 • 0.025 = 10NmW3 = 41 + 10 = 51NmW4 = 51 • 1000 = 51,000Nm/hrme = 2 • 51 ÷ 1.52 = 100kg

Example 2m = 36kg*v = 1.5m/sF = 400NC = 1000/hrs = 0.025 m (chosen)Choose from capacity chart: Model MC600 M self-compensating.

*v is the final impact velocity of the mass: With pneumatically propelled systems this can be 1.5 to 2 times the average velocity.Please take this into account when calculating energy.

2.1 for vertical motion upwards ------>2.2 for vertical motion downwards -->

4.1 Mass rolling/sliding down incline 4.2 Mass free falling about a pivot point

4.1a for vertical motion upwards ----->4.2b for vertical motion downwards ->

3. Swinging mass with propelling forceFormulaeW1 = m • v2 • 0.5 = 0.5 • l • w2

W2 = M • s RW3 = W1 + W2W4 = W3 . CVD = v • R = w • R Lme = 2 • W3 vD2

W1 = 20 • 1.52 • 0.5 = 10NmW2 = 50 • 0.0125 ÷ 0.5 = 1.3NmW3 = 10 + 1.3 = 11.3NmW4 = 11.3 • 1500 = 16,950Nm/hrv2 = 1 • 0.5 ÷ 0.8 = 0.63m/sme = 2 • 11.3 ÷ 0.632 = 57kg

Example 3m = 20kgv = 1m/sM = 50NmR = 0.5mL = 0.8mC = 1500/hrs = 0.0125 m (chosen)

Choose from capacity chart: Model MC150 MH self-compensating.

(Check the side load angle- see example 4.2)

4. Free falling mass

Check side load angle from shock absorber axis.

Calculation asper example 4.1 tan a = s

R

FormulaeW1 = m • g • h = m • vD2 • 0.5W2 = m • g • sinß • sW3 = W1 + W2W4 = W3 • CVD = 2 • g • h me = 2 • W3 vD2

W2 = (F – g • sinß) • sW3 = (F + g • sinß) • s

√

Ondrives shock absorbers provide linear deceleration and are therefore superior to other kinds of damping element. It is easy to calculate around 90% of applications knowing only the following 4 parameters:1. Mass to be decelerated (weight) m (kg). 2. Impact velocity at shock absorber Vd (m/s).3. Propelling force F (N)4. Cycles per hour c (/hr).Key to Symbols used:W1 Kinetic energy per cycle (Nm)W2 Propelling force energy per cycle (Nm)W3 Total energy per cycle (W1 + W2) (Nm)W4 Total energy per hour (W2 . C) (Nm/hr)me Effective weight (kg)m Mass to be decelerated (kg)*v Velocity of moving mass (m/s)*vd Impact velocity of shock absorber (m/s)w Angular velocity (w=2pq÷360X) (rad/s)F Propelling force (N)

C Cycles per hour (/hr)M Propelling torque (Nm)l Moment of Inertia (kgm2)g Acceleration due to gravity = 9.81 (m/s)h Drop height excl. shock absorber stroke (m)s Shock absorber stroke (m)L/R/r Radius (m)a Side load angle (°)ß Angle of incline (°)

*V or Vd is the final impact velocity of mass. With accelerating motion the final impact velocity can be 1.5 to 2 times higher than the average velocity. Please take this into account when calculating the kinetic energy.

m

m

m

hm•g

sm

h

R

va

mF s

ß

FormulaeW1 = m • g • h W2 = m • g • sW3 = W1 + W2W4 = W3 • CVD = 2 • g • h me = 2 • W3 vD2

Example 4m = 30kgh = 0.5mC = 400/hrs = 0.05 m (chosen)

√

W1 = 30 • 0.5 • 9.81 = 147NmW2 = 30 • 9.81 • 0.05 = 15NmW3 = 147 + 15 = 162NmW4 = 162 • 400 = 64,800Nm/hrVD = 2 • 9.81 • 0.5 = 3.13m/sme = 2 • 162 = 33kg 3.132

Choose from capacity chart: Model MC1202 M-1 self-compensating.

√

m

hs

V

s

s

V D

MRL

F

s

A N T I - V I B R A T I O N

TE

CH

NIC

AL

Product information updated April 2016 and subject to change. Please contact Sales for the latest prices and availability.

Shock AbsorbersFormulae & Calculations • Adjustment

Important: provide mechanical stop approx 0.5mm before end of absorber stroke.

Max. impact velocity is 1m/s.

Max. side load angle is 2.5 degrees.

Adaptors available to increase side load capacity.Operational temperature range is -10 to +70°C.Units are self compensating and no additional adjustment is required. Ensure application falls within effective weight range of selected unit. Do not paint or spray absorber body. Units may be mounted in any position.

Adjustment: The adjustment range is calibrated from 0 to 9. The adjustment knob is locked with a lock screw which must be slackened with a 1.5mm hex key before carrying out adjustment (take care not to completely remove and lose the lock screw as it is not held captive).After installing the shock absorber cycle the machine a few times and after the adjustment so that optimum deceleration is achieved (i.e. no abrupt change in the load velocity at the beginning or the end of the shock absorber stroke).Hard impact at start of stroke > adjust unit towards 9. Hard impact at end of stroke < adjust unit towards 0. Retighten lock screw after adjustment (1.5mm hex key).We recommend installation of a mechanical stop 0.5 to 1mm before end of stroke. Check effective weight of application falls within range of unit. Temperature range: min. -12°C, max. 90°C. These units are self contained and may be installed in any mounting position. Materials: Steel body with black oxide finish. Hardened stainless steel piston rod.Function: Upon impact of the load the piston moves back causing an immediate build up of internal pressure. Oil is then metered through the metering orifices bringing the load smoothly to rest. Fast reset is assured by the check valve incorporated in the piston head.

5. Rotary index table with propelling torque

FormulaeW1 = m • v2 • 0.25 = 0.5 • l • w2

W2 = M • s RW3 = W1 + W2W4 = W3 • CVD = v • R = w • R Lme = 2 • W3 VD2

Example 5 m = 1000kgv = 1.1m/sM = 1000Nms = 0.05 m (chosen)L = 1.25mR = 0.8mC = 100/hr

W1 = 1000 = • 1.12 = • 0.25 = 303NmW2 = 1000 = • 0.05 ÷ 0.5 = 63NmW3 = 303 + 63 = 366Nm W4 = 366 • 100 = 36,600Nm/hrv2 = 1.1 • 0.8 ÷ 1.25 = 0.7m/sme = 2 • 366 ÷ 0.72 = 1,494kgChoose from capacity chart: Model MC 1402 M-2 self-compensating.(Check the side load

angle - see example 4.2)

Note: Formulae given are only correct for circular table with uniform weight distribution.

mM

V

RLVD

s