Device for producing vacuum for load in motor vehicle, has centering device with at least three centering elements in contact with inner surface of expansion of engine housing bearing bore

摘要

The device has vacuum pump housing (12) flanged to an engine housing (16). A rotor shaft (18) is mounted in the pump housing for driving the pump (10) and is connected to a drive shaft (24) mounted in an engine housing bearing bore (22) and a centering device connected to the pump housing that engages a bearing bore expansion. The centering device has at least three centering elements (30) in contact with an inner surface (28) of the expansion (25).