Cap for bearing device

摘要

A cap for bearing device is attached to one end portion of an outer race member in a bearing device to block an opening portion, and includes: a cylindrical part that is fitted to the outer race member; a lid part configured to block an end portion of the cylindrical part; an annular seal part configured to, when being fitted to the outer race member, be compressed between the cap for the bearing device and the outer race member; and a ventilation part, which, in the course of fitting the cylindrical part to the outer race member, allows air to pass between inside and outside of a bearing space, and in the state where the cylindrical part is fitted to the outer race member, the ventilation is shut down.

主权项

1. A bearing device comprising an outer race member and a cap, the cap being attached to one axial end portion of the outer race member to block an opening portion of the one end portion, the cap comprising:
a cylindrical part that is fitted to the outer race member; a lid part configured to connect to block a posterior end portion of the cylindrical part in a fitting direction; an annular seal part that is in direct contact with and fixed to an inner surface of the cap, the annular seal part being configured to, when the cap is fitted to the outer race member, intervene in a compressed state between the inner surface of the cap and the outer race member; and a ventilation part, wherein in the course of fitting the cylindrical part to the outer race member, the ventilation part allows air to pass between inside and outside of a bearing space, and in the state where the cylindrical part is fitted to the outer race member, the ventilation of the ventilation part is shut down by the annular seal part.