Method for manufacturing balls for bearing and products thereby

Details Method for manufacturing balls for bearing and products thereby Method for manufacturing balls for bearing and products thereby

1996-09-13

2000-09-19

Bryant, David P.

Metal working

Method of mechanical manufacture

Process for making bearing or component thereof

2989813, 148906, B21D 5310, B21K 102

Patent

active

06119347&

ABSTRACT:
A method of manufacturing steel balls for use in a ball bearing comprising an inner steel race or shaft with an inner raceway formed around its outer peripheral surface, an outer steel race with an outer raceway formed around its inner peripheral surface, and the steel balls freely rotatably disposed between the inner raceway and the outer raceway comprises the steps of providing steel balls, quenching the steel balls, preliminarily tempering the steel balls after quenched, rough-polishing the steel balls after preliminarily tempered, surface-hardening the steel balls after rough-polished, tempering the steel balls after surface-hardened, and finish-polishing the steel balls after tempered.

REFERENCES:
patent: 4913749 (1990-04-01), Hengerer et al.
patent: 5084116 (1992-01-01), Mitamura
patent: 5122000 (1992-06-01), Matsumoto et al.

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