Patent ID: 7618193

Claim:
A rolling bearing which is adapted for a desired auxiliary device employed in a belt-driving system in which the desired auxiliary device is selected from a plurality of auxiliary devices mounted on a vehicle with an internal combustion engine generating a driving power and driven in common by the internal combustion engine via a single belt transmitting the driving power to the plurality of auxiliary devices, the rolling bearing comprising: an inner race, an outer race, and a plurality of rolling elements disposed between the inner race and the outer race for rolling capabilities, wherein an internal clearance among the inner race, the outer race, and each of the plurality of rolling elements in a radial direction of the rolling bearing is set to a first value before the rolling bearing is mounted into the desired auxiliary device and the internal clearance is set to a second value after the rolling bearing is mounted into the desired auxiliary device, the second value being smaller than the first value, and the internal clearance obtained after the rolling bearing is mounted in the desired auxiliary device has a tolerance value that is less than half of the difference between the first value and the second value in the radial direction after the rolling bearing is mounted into the desired auxiliary device.