Bearing assembly for machine tool spindles

Details Bearing assembly for machine tool spindles Bearing assembly for machine tool spindles

F - Mech Eng,Light,Heat,Weapons

16

C

308/5.5

F16C 37/00 (2006.01) F16C 19/52 (2006.01) F16C 35/077 (2006.01) F16C 35/12 (2006.01)

Patent

CA 1088604

BEARING ASSEMBLY FOR MACHINE TOOL SPINDLES Abstract of the Disclosure A machine tool spindle bearing assembly employ- ing front and rear bearings each having radially compress- ed 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 roll- ing 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. i.

313521

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