Bearing sealing device
AssigneeNtn Corporation
InventorYoshitaka OKAJI
Life of this patent
Estimating the term…
Abstract
A bearing sealing device includes two seals (inner and outer seals) sealing the space between the inner and outer races of a bearing to ensure higher seal performance, and also to reduce the area of the inner periphery of the outer race that needs to be ground. The bearing sealing device includes a ring constituted by a metal annulus, and a rubber part. The metal annulus is formed by cold pressing, and has a seal contact surface kept in contact with seal lips of the outer seal. The rubber part includes a press-fitted portion fixed to the inner periphery of the outer race. The inner race has, on its outer periphery, a cylindrical fitting surface to which the outer seal is press-fitted.
Claims9
A bearing sealing device for a bearing including an inner race having a raceway surface on an outer periphery of the inner race, an outer race having a raceway surface on an inner periphery of the outer race, the bearing sealing device comprising:
- a seal groove in the inner periphery of the outer race;
- an inner seal including a radially outer portion fixed in the seal groove;
- an outer seal including a radially inner portion fixed to the outer periphery of the inner race, and a seal lip;
- and
- a ring having a press-fitted portion fixed to the inner periphery of the outer race, and a seal contact surface with which the seal lip of the outer seal is in contact,
- wherein the outer seal is located outwardly of the inner seal.
Dependencies are inferred from the claim text.