Rolling bearing for e.g. jet engine, has CPU calculating time-integrated difference between rotational speed of rotary shaft and revolving speed of rollers, where rollers revolve about axis of bearing along raceways

摘要

The bearing has a set of rollers (4) revolving about an axis of the rolling bearing along a pair of raceways, and an annular retainer (5) retaining the rollers in s preset position. A CPU detects revolving speed of the rollers, where the rollers are disposed between the raceways. The CPU calculates time-integrated difference between rotational speed of a rotary shaft and revolving speed of the rollers. The CPU has a detected portion that is provided on the annular retainer at a portion offset from center of rotation of the retainer.