Bearing spacer and crankshaft seal for end cap assembly of air compressor

摘要

An end cap assembly for an air compressor driven by an internal combustion engine has a crankshaft structure provided with a shaft, an end cap disposed around the shaft, a first set of ball bearings mounted in the end cap for disposition around the shaft and a second set of ball bearings mounted in the end cap and spaced from the first set of ball bearings for disposition around the shaft. A crankshaft seal and bearing spacer arrangement is disposed around the shaft between the first and second sets of ball bearings for blocking passage of air and oil from the engine, and preventing the first and second sets of ball bearings from contacting each other.