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US 6,599,022 B2Granted
Bearing apparatus
AssigneeMinebea Co., Ltd.
InventorRikuro Obara
Life of this patent
Estimating the term…
Abstract
A bearing apparatus including inner and outer rings and balls interposed therebetween, the apparatus being characterized in that it comprises: a low expansion ring press fit around the outer periphery of the outer ring, wherein the low expansion ring is made of a material with lower factor of linear thermal expansion than the outer ring material.
Claims6
A bearing apparatus including inner and outer rings and balls interposed therebetween, the apparatus being characterized in that it comprises:
- a low expansion ring press fit around an outer periphery of the outer ring, wherein the low expansion ring is made of a material with a lower factor of linear thermal expansion than the outer ring material.
A compound bearing apparatus including:
- a shaft to which an inner ring is fit slidably,
- a cylindrical outer ring member surrounding the shaft,
- a plurality of balls of a first row interposed between a first inner raceway formed on an outer periphery of the inner ring and a first outer raceway formed on an inner periphery of the outer ring member,
- a plurality of balls of a second row interposed between a second inner raceway formed directly on an outer periphery of the shaft and a second outer raceway formed on the inner periphery of the outer ring member, the bearing apparatus being characterized in that it comprises:
- a low expansion ring press fit around an outer periphery of the outer ring member,
- wherein the low expansion ring is made of a material with a lower factor of linear thermal expansion than a material of the outer ring member, and
- the inner ring is secured on the shaft with applying a reasonable amount of pre-load thereon.
4 more elements
A compound bearing apparatus including:
- a stepped shaft having a larger diameter shaft portion and a reduced diameter shaft portion, an inner ring fit slidably around the reduced diameter shaft portion of the stepped shaft, and
- a cylindrical outer ring member surrounding the shaft,
- a plurality of balls of a first row interposed between a first inner raceway formed on an outer periphery of the inner ring and a first outer raceway formed on an inner periphery of the outer ring member, and
- a plurality of balls of a second row interposed between a second inner raceway formed directly on an outer periphery of the larger diameter shaft portion of the stepped shaft and a second outer raceway formed on the inner periphery of the outer ring member, the bearing apparatus being characterized in that it comprises:
- a low expansion ring press fit around an outer periphery of the outer ring member,
- wherein the low expansion ring is made of a material with a lower factor of linear thermal expansion than a material of the outer ring member, and
- the inner ring is secured on the shaft with applying a reasonable amount of pre-load thereon.
4 more elements
Dependencies are inferred from the claim text.