What is the correct torque for the center bolt when replacing the drive coupling on a large shaft compressor?

The correct torque for the center bolt when replacing the drive coupling on a large shaft compressor is 90 foot-pounds. Achieving the specified torque is crucial for ensuring that the drive coupling is securely fastened to the compressor shaft. If the bolt is not tightened to the correct torque, it could lead to insufficient coupling engagement, resulting in slippage during operation, vibration, or even potential damage to the compressor.

Using 90 foot-pounds represents a balance between securing the components together while avoiding the risk of over-tightening, which could damage the coupling or the compressor shaft. It reflects the manufacturer's specifications that account for the materials and design of the compressor and coupling, ensuring optimal performance and longevity of the equipment. Proper torque specification as outlined in service manuals or manufacturer guidelines is essential for the integrity of the entire system.