What device traps exhaust air near the end of the stroke to slow the cylinder to a safe stop?

The internal cushion is designed specifically to trap exhaust air near the end of a cylinder's stroke, allowing for a controlled deceleration that results in a safe and smooth stop. This feature is particularly important in applications where sudden stops could cause damage to the machinery or create safety hazards. By slowing down the exhaust of air as the cylinder approaches the end of its stroke, the internal cushion minimizes impact forces, reducing wear and tear on the system and increasing the overall lifespan of the cylinder.

In contrast, a speed control valve primarily regulates the speed of the cylinder throughout its stroke but does not specifically provide a cushioning effect at the end of the stroke. An exhaust muffler serves to reduce noise from the exhaust but does not control the cylinder's deceleration. A ball valve is a type of valve used for on/off control of the airflow, and it doesn't provide any cushioning effect or deceleration mechanism. The internal cushion is thus the most effective and designed method for achieving a safe stop by managing the release of exhaust air.