The Bitzer Parallel Key is a mechanical component used in Bitzer compressors and refrigeration systems to secure components, such as pulleys or gears, to shafts. The parallel key has a rectangular shape and is designed to fit into corresponding grooves in both the shaft and the component, ensuring proper alignment and efficient torque transmission. Made from durable materials, the parallel key prevents slippage and misalignment, contributing to the reliable and smooth operation of the system while extending the lifespan of the equipment.