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【
Material】
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【 Loads, Forces and Moments】
Choice of cylinder is decided by：
‧Permissible loads, forces and moments
‧Performance of the pneumatic end cushions
● The main factors here are the mass to be cushioned and the piston speed at start of cushioning ( unless
external cushioning is used, e. g. hydraulic shock absorbers).
● The adjacent table shows the maximum values for light, shock-free operation, which must not be exceeded
even in dynamic operation.
● Load and moment data are based on speeds V ≤ 0.5 m/s.
When working out the action force required, it is essential to take into account the friction forces generated by
the specific application or load.
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【 Cushion Diagram】
Work out your expected moving mass and read off the maximum permissible speed at start of cushioning.
Alternatively, take your desired speed and expected mass and find the cylinder size required.Please note
that piston speed at start of cushioning is typically ca. 50 % higher than the average speed, and that is
higher speed which determines the choice of cylinder. If these maximum permissible values are exceeded,
additonal shock absorbers must be used.
For cylinders with linear guides or brakes, please be sure to take the mass of the carriage or the
brake housing into account.
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