| 摘要 |
PROBLEM TO BE SOLVED: To detect a high precision revolution angle. SOLUTION: In a revolution bearing, a scale 4 along a circumferential direction is provided on one bearing ring out of an inner ring 1 and an outer ring 2 which are rings of the bearing respectively. A detector 5 for revolution angle detection which is for reading the scale 4 is provided on the other bearing ring. It is desirable to form the scale 4 by alternately magnetizing a belt-like flexible synthetic resin-made magnet into S poles and N poles so as to make graduations. |
