Engine starter with a corrosion resistant bearing

摘要

An engine starter suitable to be used under severe corrosive conditions is disclosed, wherein the inner race of the ball bearing for supporting the pinion driving shaft is made of a martensitic stainless steel hardened by a heat treatment, which is effective in maintaining a good sliding contact between the inner race of the bearing and the pinion driving shaft. The balls of the bearing may be covered by a seal at both open sides thereof; further, the front open end of the pinion may be closed by a cap.