Roller bearing

Details Roller bearing Roller bearing

2006-02-14

2006-02-14

Footland, Lenard A. (Department: 3682)

Bearings

Rotary bearing

Antifriction bearing

C384S564000, C384S565000, C384S569000

Reexamination Certificate

active

06997617

ABSTRACT:
A roller bearing includes an inner ring, an outer ring, a plurality of cylindrical rollers each provided between rolling contact surfaces of the inner ring and the outer ring. Each of the cylindrical rollers includes an end face having a peripheral part that is crowned. A flange portion is formed at an outer circumferential face end part of the inner ring and/or an inner circumferential face end part of the outer ring. The peripheral part is crowned in a curving shape represented by an exponential function of y=a·exp(−b·x); where a and b are constants, x is a distance from the rolling contact surface in a radial direction of the cylindrical roller, and y is a crowning fall-off amount from a central part of the end face of the cylindrical roller in an axial direction of the cylindrical roller.

REFERENCES:
patent: 4318574 (1982-03-01), Nakamura
patent: 51-156346 UM (1950-06-01), None
patent: 56-17415 UM (1981-02-01), None
patent: 7-12119 (1995-01-01), None
patent: 7-12133 (1995-01-01), None
patent: 10-196660 (1998-07-01), None
patent: 2002-70874 (2002-03-01), None
patent: 2003-21145 (2003-01-01), None

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