ROLLING BEARING HOLDER

PURPOSE: To manufacture cages having various diameters by one tool rationally by making a central interval between mutual pockets of cages of a flat cage member d.π/2 when a diameter of a rolling body guided into the cage is d. CONSTITUTION: When a cage 3 is manufactured, a hold pocket 4 is formed by blanking a flat beltlike sheet metal. At this time, when a diameter of a cylindrical roller 5 is d, a central interval (pitch) is d.π/2, namely, the pitch is 4 mm×π/2=2 π, if d=4 mm. An abutting face 7 of both end faces of a cage member 6 extends in the axial direction across an interval of 2 π from a central line 8 of adjacent cage pockets 4a. The central lines 8 of two cage pockets 4a which are symmetrical for a join face 9 of cage members 6 after curved and are adjacent mutually form a interval of 4 π in the circumferential direction on a pitch circle, and the number of pitch becomes 2.D/d when a radius of the cage is D. If the number of pitch is not an integer, the manufacture of the cage becomes possible because an interval between the central lines is smaller than 4 π.