PK bells are designed to connect the motor and hydraulic pump of the PGP series manufactured by PNEVMOLUX. Made of aluminum alloy. Provides reliable fastening of the pump and electric motor. Aluminum alloy more efficiently removes heat from the zone of rotation of the pump and motor shafts. Various models of bells of the RK series are designed for mounting various electric motors. To select a bell, you need to know the model of the electric motor. To reduce vibration during operation of the pump unit, the pump shaft is attached to the motor shaft by means of the NL coupling half.