Adjustable fluid friction clutch for power regulation of coolant pump and for use in drive for driving coolant pump, has a propelled side and driven off side, which are separated from each other
Coolant pump for internal combustion engine, has electrically controllable magnetic brake which slows down impeller in energized state, such that rotational speed of impeller is controlled independent of speed of chain/belt pulley
Pump e.g. switchable pump, for use in motor car, has draw key coupling part decoupling pump motor shaft from chain and/or belt wheel, which is mounted at pump housing by ball bearing device, and actuator actuating coupling part