The Gram Key Type A is a specific type of mechanical key used in Gram refrigeration and compressor systems. It is designed to securely fit into keyways to lock components, such as pulleys or gears, onto shafts. The Type A key ensures proper alignment and efficient torque transmission, preventing slippage and maintaining system stability. Made from durable materials, it plays a critical role in ensuring reliable operation and extending the lifespan of the system by keeping critical components securely in place.