Ball bearing with controlled dynamic imbalance

Details Ball bearing with controlled dynamic imbalance Ball bearing with controlled dynamic imbalance

1996-01-05

1996-12-24

Hannon, Thomas R.

Bearings

Rotary bearing

Antifriction bearing

F16C 1900

Patent

active

055868274

ABSTRACT:
1. A ball bearing comprising; a first race ring having a surface formed with a first race surface thereon, a second race ring having a surface formed with a second race surface thereon, and a plurality of balls provided so as to be freely rotatable between the first race surface and the second race surface, the ball bearing being used under conditions wherein a product d.sub.m .multidot.N of a pitch circle diameter d.sub.m mm of the plurality of balls, and a rotational speed N rpm of the second race ring relative to the first race ring is greater than 1,000,000 mm.multidot.rpm, characterized in that for each of the plurality of balls, a ratio .DELTA.I/I of a dynamic imbalance amount to a moment of inertia I, is less than (3.1.times.10.sup.7 /(d.sub.m .multidot.N).sup.2)+2.7.times.10.sup.-5.

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