Separating power take-off unit with input shaft, which has a pressed-on sealing bearing journal

摘要

A separating power take-off unit having a housing, an input shaft, a transmission shaft, a sealing journal and a dynamic seal. The input shaft is rotatably disposed in the housing and includes a plurality of keyways or teeth. The transmission shaft is disposed about the input shaft and is supported at one end by a transmission shaft bearing having an inner bearing race. The seal journal is received over the keyways or teeth and is firmly and sealingly engaged with the input shaft. The sealing journal has an outer sealing surface which may be sized larger in diameter than the splines or teeth on the input shaft and / or the inner diameter of the inner race of the transmission shaft bearing. The dynamic seal is received over the splines and mates with the housing and outer seal surface.