SITEMA Safety Catchers Animated Simulation

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Safety catchers are used to prevent catastrophic crashes in case the loss of hydraulic or pneumatic pressure occurs suddenly in certain applications such as hydraulic presses and freight elevators. The clamping system grasps the rod by means of pre-tensioned springs and secures the load with a self-intensifying principle that is similar to a wedge system.

https://www.ame.com/safety-catchers