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US 6,218,827 B1Granted
Rolling bearing unit having an improved structure for preventing foreign material from entering the unit
AssigneeNsk Ltd.
InventorsHayato Ohmi, Hideo Ouchi
Life of this patent
Estimating the term…
Abstract
A roller bearing unit having a rotating speed detector includes an outer race, an inner race, a cover made of synthetic resin, a sleeve made cylindrically of metal and a seal ring fitted in an engaging groove of an engaging portion of the cover. The seal ring is disposed between the inner surface of the outer race and the cover so as to prevent the entrance of muddy water into the unit.
Claims11
A roller bearing unit having a rotating speed detector, comprising:
- an outer race being fixed and including an outer raceway on an inner circumferential surface of the outer race;
- an inner race being rotatable and including an inner raceway on an outer circumferential surface of the inner race;
- a plurality of rolling elements arranged to be freely rolled between the outer raceway and the inner raceway;
- a cover made of synthetic resin and fixed to the outer race only by press fitting and having an engaging portion press fitted with interference to an opening end on the inner surface of the outer race, and an engaging groove on the engaging portion;
- a detector including a detected element fixed to the inner race and a sensor fixed to the cover for detecting a rotating speed in cooperation with the detected element;
- and
- a seal ring fitted into the engaging groove of the cover to seal between the cover and the inner surface of the outer race.
4 more elements
A roller bearing unit having a rotating speed detector, comprising:
- an outer race being fixed and including an outer raceway on an inner circumferential surface of the outer race;
- an inner race being rotatable and including an inner raceway on an outer circumferential surface of the inner race;
- a plurality of rolling elements arranged to be freely rolled between the outer raceway and the inner raceway;
- a cover made of synthetic resin and fixed to the outer race by press fitting and having a cylindrical engaging portion press fitted with interference to an opening end on the inner surface of the outer race, and an engaging groove on the cylindrical engaging portion;
- a detector including a detected element fixed to the inner race and a sensor fixed to the cover for detecting a rotating speed in cooperation with the detected element;
- and
- a seal ring fitted into the engaging groove of the cover to seal between the cover and the inner surface of the outer race.
4 more elements
Dependencies are inferred from the claim text.