Needle roller bearing

Details Needle roller bearing Needle roller bearing

1998-09-21

1999-12-28

Hannon, Thomas R.

Bearings

Rotary bearing

Antifriction bearing

384575, 384580, F16C 3346, F16C 3354

Patent

active

060072547

ABSTRACT:
The needle roller bearing A comprises a cage 3 having a plurality of long window-shaped pockets 3a formed at an appointed interval on its circumference, and a plurality of needle rollers 4 rollably accommodated and retained in the pockets 3a of the cage 3. The connection radius R (radius of curvature) between the inner diameter side portion of the pocket wall surface 3a1 and the inside surface 3b1 of the annular portion 3b, and the connection radius R (radius of curvature) between the inner diameter side portion of the pocket wall surface 3a2 and the inside surface 3b1 of the annular portion 3b of the cage 3 are set to a value having a relationship of 0.2<R/Dr.ltoreq.0.5, preferably 0.3.ltoreq.R/Dr.ltoreq.0.5 with respect to the diameter Dr of the needle roller 4.

REFERENCES:
patent: 3298761 (1967-01-01), Schaeffler
patent: 3305279 (1967-02-01), Zimmerer
patent: 3582165 (1971-06-01), Koch
patent: 5584583 (1996-12-01), Hidano

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