Needle roller bearing

Details Needle roller bearing Needle roller bearing

1998-07-28

2000-05-30

Hannon, Thomas R.

Bearings

Rotary bearing

Antifriction bearing

384572, 384580, F16C 3346

Patent

active

060684062

ABSTRACT:
The needle roller bearing B in this embodiment comprises a cage 1 having a plurality of elongated window-shaped pockets 1a formed therein at predetermined circumferential intervals, and a plurality of needle rollers 2 rollably received and held in the pockets 1a. The four corners A of each pocket 1a of the cage 1 are provided with relief portions 1an4 each having a circumferentially recessed arcuate peripheral wall surface. The circumferential dimension between the circumferential top 1a41 of the relief potion 1a4 and the pocket wall surface 1a1 is set with respect to the diameter Dw of the needle rollers 2 such that 0.01.ltoreq.h/Dw.ltoreq.0.2. The provision of the relief portions 1a4 at the corners A of each pocket 1a of the cage 1 permits the relief portions 1a4 to serve as passageways for the lubricating oil.

REFERENCES:
patent: 4613239 (1986-09-01), Hofmann et al.
patent: 5255985 (1993-10-01), Alling
patent: 5391005 (1995-02-01), Alling
patent: 5584583 (1996-12-01), Hidano
patent: 5826988 (1998-10-01), Furukawa et al.

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