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WDS Shock Absorbers

Benefits of using WDS Industrial Shock Absorbers:

  • Increased productivity through raised machine speeds, smoother operation and operator comfort.
  • Smooth deceleration of moving parts leads to reduced wear, lower noise and extended equipment life.
  • Reduced maintenance, vibration and noise with benefits to health, safety and the working environment.
  • WDS Industrial Shock Absorbers are maintenance-free hydraulic deceleration devices, sealed for life.

Shock Absorbers are commonplace in industrial equipment where objects or components need to be decelerated or change direction. The kinetic energy in a moving body should be controlled and dissipated to avoid damage and wear to the equipment or excessive noise pollution. There are many device types to counter these issues but none can match the energy absorption characteristics of the hydraulic shock absorber when matched to the application.

Shock Absorber Calculator

Three steps to Shock Absorber selection:
1. Determine:

  • Is the motion horizontal, vertical fall or rotary.
  • Impact velocity & any propelling force.
  • Mass to be decelerated within a defined stroke.
  • Number of impact strokes per hour.

2. Calculate:

  • W1 - the kinetic energy per stroke, mass only.
  • W4 - the total energy per hour.
  • me - the effective mass.

3. Select:

  • Match the calculated values of W1, W4 and ‘me’ to the unit on the WDS product pages.
 
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Note: If multiple parallel units are ued, the values of W3,W4 and me are divided by the number of units used (n).

 
  • Type 1 - Mass without propelling force
  • Type 2 - Mass with propelling force
  • Type 3 - Mass with motor drive
  • Type 4 - Mass on driven rollers
  • Type 5 - Mass, vertical free fall
  • Type 6 - Mass, vertical with propelling force
  • Type 7 - Mass, free moving on inclined plane
Types of absorbers Types of absorbers

Please select type:

Key to symbols:
W1 Kinetic energy per stroke, mass only = m * v² / 2 (Nm) W2 Propelling energy or work per stroke = F * s (Nm) W3 Total energy per stroke = W1 + W2 (Nm) W4 Total energy per hour = W3 * x (Nm/hr)
P Motor power (kW)
M Propelling torque (Nm)
ST Stall torque factor (usually 2.5)
g Acceleration due to gravity = 9.81 (m/s²) me Effective mass = 2*W3 / v² (kg)
h Vertical drop distance excluding shock absorber stroke (m)
m Mass to be decelerated (kg)
s Shock absorber stroke (m)
n Number of units in parallel gs Deceleration rate = 0.6 * v²/g*s
v Impact velocity at shock absorber (m/s)
u Coefficient of friction
F Propelling force (N) Q Reaction force = 1.2 * W3 / s (N)
x Number of strokes per hour
a Angle of incline (degrees)

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