A21763S-335 Cornell Pump OEM Drive Coupler

The A21763S-335 Cornell OEM Drive Coupler is a torsional coupling for Cornell centrifugal pump platforms in the A21763 size class. This coupling series serves a different frame size than the A21802 family, matching smaller to mid-range Cornell pump models used in irrigation, water transfer, and light industrial pumping.

The A21763 coupling class handles proportionally lower torque than the larger A21802 series, but the engineering principles are identical – the elastomeric element absorbs prime mover vibration to protect the pump’s mechanical seal and bearings. In agricultural service, A21763-equipped pumps serve as booster pumps, transfer pumps, or secondary irrigation units where reliable operation is essential but the flow requirements are moderate.

The A21763S-335 is a direct factory replacement. Follow Cornell’s standard coupling installation procedure including alignment verification with dial indicators. Inspect the coupling at regular service intervals and replace proactively when the elastomer shows signs of aging.

Available from Stark Industrial Products with fast shipping for pump maintenance teams.