Hydraulic Shaft Coupling (B3Z/B4Z)

7/8″ x 1-1/8″ Keyed/Splined Hydraulic Shaft Coupling for all B3ZRM and B4ZRKS pumps. This coupling has a keyed connection on one side, and a splined connection for hydraulic motors on the other.

If trimming an existing shaft to accommodate this adapter, final shaft length should be 1-13/16th” from the bearing itself, NOT the bearing cap.