Bearings – Rotary bearing – Antifriction bearing
Patent
1998-11-25
2000-05-30
Hannon, Thomas R.
Bearings
Rotary bearing
Antifriction bearing
384470, 384572, F16C 3346
Patent
active
060684097
ABSTRACT:
In a synthetic roller-bearing cage, axially separated annular bodies are connected by columnar portions arranged in the circumferential direction in order to define roller accommodating pockets. A radially outer surface of the columnar portion forms a portion of a cylindrical surface whose radius is smaller than that of the outer circumferential surfaces of the annular bodies, thus forming a lubrication-oil flow surface. A radially inner surface of the columnar portion, together with inner circumferential surfaces of the annular bodies, forms a portion of a cylindrical surface whose diameter is at least 30% that of the roller greater than that of a shaft on which the roller bearing is mounted. Grooved portions are formed in the circumferentially opposite side surfaces of the columnar portion at axially opposite end regions adjacent to the respective annular bodies. An outer roller-retaining portion having a pawl-like appearance is formed on either circumferential edge of a radially outer surface of the columnar portion at a region between the opposite grooved portions. Inner roller-retaining portions are formed on either circumferential edge of a radially inner surface of the columnar portion at axially opposite end regions located between and adjacent to the respective opposite grooved portions, so that a central receded portion is formed between the inner roller-retaining portions.
REFERENCES:
patent: 1668112 (1928-05-01), Gibbons
patent: 5647674 (1997-07-01), Ohashi et al.
patent: 5772338 (1998-06-01), Hillmann et al.
Hannon Thomas R.
Koyo Seiko Co. Ltd.
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