Patent ID: 7182346
Filing Date: 2007-02-27
Classification: F16J

Abstract:
1. A multistage oil seal suitable for a machine tool motor, comprising a plurality of lips in a plurality of stages to be disposed around an axially extending motor shaft of said machine tool along the axis of said motor shaft to protect internal members of said motor from the cutting fluid, wherein all or at least two of said lips in the plurality of stages are formed from different materials, said lips in the plurality of stages are removably mounted on a tubular lip base, said tubular lip base being mounted to a fitting member having a tubular inner peripheral portion, a flange portion extending outward radially from one end of the inner peripheral portion, and an outer peripheral portion formed by axially folding back the outer end of the flange portion; the outer peripheral portion of said fitting member is used for fixing said oil seal to the machine tool motor; and said lip base is mounted to the inner peripheral portion of said fitting member.