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Sizing Industrial Shock Absorbers for Torque Driven Swinging Arm ( Uniform Mass Distribution )

When a swinging arm is moved by an external applied force—such as a hydraulic cylinder or pneumatic actuator—and has a uniform mass distribution, it generates significant kinetic energy that must be carefully managed. At Shockbuffer, we specialize in industrial shock absorber selection and accurate sizing of shock absorbers for these high-force applications to protect equipment and improve safety. Our large industrial shock absorbers are built to handle higher impact forces and heavier arms, providing smooth deceleration, reducing vibration, and preventing structural damage. Choosing the right shock absorber for machinery ensures reliable operation and longer machine life in demanding industrial environments.

Formulae

E1 = W · v  · 0.17 = 0.5 · I · ω

E2 = (F · r · s) / R = (T · s) / R

E3 = E1 + E2

E4 = E3 · c

vD = (v · R) / L = ω · R

We = (2 · E3) / vD

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Example: Sizing Industrial Shock Absorbers for Torque Driven Swinging Arm ( Uniform Mass Distribution )

W = 2500 kg

v = 1.8 m/s

F = 5000 N

T = 4200 Nm

s = 0.050 m

r = 0.5 m

R = 0.8 m

L = 1.2 m

c = 1000 /hr

E1 = 2500 · 1.8  · 0.17 = 810 Nm

E2 = (5000 · 0.5 · 0.05) / 0.8 = 158.7 Nm

E3 = 810+ 158.7 = 968.7 Nm

E4 = 968.7 · 1000 = 968700 Nm/hr

vD = (1.8 · 0.8) / 1.2 = 1.2 m/s

We = (2 · 968) / 1.2   = 1344 kg

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Swinging arm with propelling force uniform weight distribution

Model choosen - SBN-M100x2S50H1

Applications of Industrial Shock Absorbers​

 

Typical shock absorber applications in this category include:

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  • Large pivoting arms on automated production lines driven by hydraulic cylinders

  • Heavy swinging gates or flaps in bulk material handling systems

  • Force-driven rotary arms in welding, assembly, or painting stations

  • Robust indexing arms for moving large fixtures or components

  • Swing arms in metal stamping or forming equipment

  • Test equipment with large balanced arms requiring controlled deceleration

 

In all these cases, a large industrial shock absorber must be carefully sized to absorb the kinetic energy produced by the applied force, ensuring controlled stopping and protecting mechanical structures from wear and shock.

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