Mechanical combustion engine coolant pump

摘要

The invention is directed to a mechanical combustion engine coolant pump (10) for pumping a coolant for an internal combustion engine, comprising a pump wheel (20) at a rotatable rotor shaft (18) being radially supported by a first roller bearing (26), a rotatable driving wheel (32) being radially supported by a roller bearing (26) and being driven by the combustion engine, and means for connecting the rotor shaft (18) with the driving wheel (32) in a rotatably fixed manner. The roller bearing (26) is provided with a separate outer ring (50) which is directly fixed to a pump frame body (12). A separate bearing fixation structure (52) is axially pushing the outer ring (50) of the first roller bearing (26) clearance-free against the pump frame body (12), whereby the bearing fixation structure (52) is directly fixed to the pump frame body (12).