The Pneumatic `rise and fall' roller track gives an efficient system to enable the movement of airfreight containers or palletized products into trucks and trailers. The principle of pneumatically raised rollers is to have the rollers available only when loading and unloading is required and not during transit. The load is 'live' for loading and 'dead' for transportation.

Pneumatic rotary actuators are use-pressurized air to rotate mechanical components. These are used in applications such as machine loading and unloading, material handling, product assembly, welding, packing, testing and quality control. Pneumatic rotary actuators that provide positional feedback include encoders or potentiometers. Some pneumatic rotary actuators include a closed loop air/oil system for hydraulic-like smoothness.