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Sizing Industrial Shock Absorbers for
Motor-Driven Vertical Rotating Arm with Load Against Gravity

When a vertical rotating arm moves a load upward against gravity, it creates high kinetic energy and torque that must be carefully absorbed to protect equipment and ensure controlled stopping. At Shockbuffer, we offer specialized industrial shock absorber selection and precise sizing of shock absorbers for motor-driven vertical arms working against gravitational force. Our medium industrial shock absorbers are designed to manage the dynamic forces generated in these applications, delivering smooth deceleration, reducing vibration, and preventing mechanical wear. Choosing the right shock absorber for machinery helps maintain process safety, accuracy, and long-term reliability.

Formulae

I = W · K²

F = (T - (W · K · sin α) )/ Rs

E1 = 0.5 · I · ω²

E2 = F · S

E3 = E1 + E2

E4 = E3 · c

Vs = Rs · ω

We= (2 · E3) / Vs

2

Example: Sizing Industrial Shock Absorbers for Motor-Driven Vertical Rotating Arm with Load Against Gravity

I = 70 · 0.9  = 63 kg-m

F = (350 - ( 70 · 0.9 · 0.5 )) / 0.7 = 455 N

E1 = 0.5 · 63 · 9 = 284 N-m

E2 = 455 · 0.050 = 23 Nm

E3 = 284 + 23 = 317 Nm

E4 = 317 · 150= 47550 Nm/hr

Vs = 0.7 · 3 = 2.1 m/s

We = (2 · 317 ) / 2.1  = 143 kg

2

2

2

W = 70 kg

K = 0.9 m

Rs = 0.7 m

ω = 3 rad./sec

α = 30°

T = 350 N·m

s = 0.050 m

C = 150 / hr

Motor-Driven Vertical Rotating Arm with Load Against Gravity

Model choosen -SBN-M33x1.5S50H3

Application of Industrial Shock Absorbers

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Typical shock absorber applications in this category include:

 

Vertical robotic arms lifting parts or tools upward during assembly

  • Rotary lifting fixtures on production lines or machine tending systems

  • Powered pivot arms raising heavy loads for welding or inspection

  • Vertical loader mechanisms moving products to higher conveyors or stations

  • Motor-driven balancing arms rotating upward to position parts

  • Automated systems lifting large panels, sheets, or frames vertically

 

In all these cases, a medium industrial shock absorber must be carefully sized to handle the kinetic energy from motor-driven rotation against gravity, ensuring safe and controlled deceleration while protecting machinery from impact and vibration.

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