What is the purpose of the cushioning in a double-acting cylinder?

The cushioning in a double-acting cylinder is designed primarily to prevent a hard striking of the piston at the end positions. When a cylinder reaches the end of its stroke, the sudden stop can create a significant impact that may cause wear and damage to the piston and the cylinder itself over time. The cushioning mechanism, which typically involves adjustable flow controls or specific designs within the cylinder, slows down the piston as it approaches the end of its stroke. This deceleration results in a gentler stop, thereby extending the lifespan of the components and ensuring reliable operation.

While cushioning can also contribute to smoother operation and might have implications for energy consumption and durability, its foremost role specifically relates to mitigating the impact force when the piston reaches its limits. This function is crucial in applications where precision and maintenance of the equipment are priorities.