A21763X-335 Cornell Pump OEM Drive Coupler

The A21763X-335 Cornell OEM Drive Coupler is a torsional coupling for Cornell centrifugal pump platforms in the A21763 size class. This coupling connects the prime mover to the pump shaft through a flexible elastomeric element that dampens torsional vibration and compensates for minor alignment variations.

In Cornell pump systems, the drive coupling works in concert with the mechanical seal to determine the pump’s maintenance interval. A properly functioning coupler reduces the vibration load on the seal, extending seal life and reducing the frequency of costly seal replacements. This makes the coupler one of the most cost-effective maintenance items on the pump – replacing a worn coupler is far less expensive than replacing a seal that failed because of excessive vibration.

The A21763X-335 is a direct OEM replacement. Match the part number exactly, as other A21763 variants have different configurations. Install per Cornell’s procedure with dial indicator alignment verification.

In stock at Stark Industrial Products for same-day shipping to pump service operations.