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