Bearing assembly with thermal adaptor

Details Bearing assembly with thermal adaptor Bearing assembly with thermal adaptor

1978-10-12

1980-10-07

Footland, Lenard A.

Cutlery

308DIG14, F16C 35077

Patent

active

042264855

ABSTRACT:
A machine tool spindle bearing assembly employing front and rear bearings each having radially compressed rolling elements between an inner race press fitted on the spindle and an outer race press fitted into a section of a thermal adaptor mounted on the spindle housing through a heat barrier section. The combined masses of each outer race and the section of the thermal adaptor supporting the outer race are related to the total mass of the rolling elements of the bearing so that, in response to the heat generated by the rolling contact forces between the rolling elements and the outer race, the mean diameter of the track of the outer race increases to twice the increase in diameter of a rolling element. The thermal barriers of the thermal adaptors are radially rigid; the thermal barrier of the front thermal adaptor is axially rigid and the thermal barrier of the rear thermal adaptor is axially flexible.

REFERENCES:
patent: 2735734 (1956-02-01), Kalikow
patent: 3311431 (1967-03-01), Hilliard
patent: 3317258 (1967-05-01), Hermann
patent: 3692372 (1972-09-01), Pineo

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