Ball bearing with controlled dynamic imbalance
US5586827A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 1996 |
| Grant date | Dec 24, 1996 |
| Priority date | — |
| Expiry date | Jan 5, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C33/32
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.