GB740819A - Measuring device for ascertaining the required length of a part of a bearing - Google Patents

Abstract

740,819. Linear-dimension gauges. S.K.F. KUGELLAGERFABRIKEN GES., [formerly VEREINIGTE KUGELLAGERFABRIKEN AKT.-GES.]. Nov. 5, 1952 [Nov. 7, 1951], No. 27890/52. Class 106 (2). A device for finding the length of spacer sleeve for fitting between the rows of balls in a two-row ball-bearing, having an outer race ring and an arbor with two race grooves for receiving balls, comprises two sets of relativelyadjustable gauging elements adapted to be engaged respectively in the race grooves in positions, longitudinally of the bearing, corresponding to those of the balls in an assembled bearing, variation from a standard spacing between the gauging elements being indicated by a dial gauge, enabling spacer sleeve of suitable length to be selected. In Fig. 3, an arbor 3 is placed between two pairs of studs 9, 11 carried respectively by parts 15, 17 urged apart by a spring 19. The part 15 carries a dial gauge 13 whose plunger bears against the part 17. The studs 9, 11 have the same diameter as the balls and the outside dimension of each pair corresponds to the inner diameter of the outer race ring. After a measuring operation a stop 18 prevents the part 15 from sliding off the part 17. In Fig. 4 gauging is effected with the arbor 3 and outer race ring 5 in operative position. Cagelike structures 22, 23, which have cylindrical ball pockets 29 and tapered ball holders 27, are held by tubes 47, 45 respectively pushed one into the other and urged apart by a spring 37, longitudinal and rotary relative movement being restricted by pin 53 and slot 55. Each row of balls is retained by a spring 25 and slots 51 in the tube 45 tend to prevent the balls jamming. A measuring operation is effected by inserting the arbor 3 so that the balls 21 are in contact with the grooved ball races, the outer ring 5 is pushed on until it bears against the stand 49. The balls 21 are pressed outwards by the spring-loaded tube 45 and thus brought into working position. A dial gauge 13 indicates the size of spacer sleeve required, having been calibrated by means of an arbor 3 and ring 5 with a pre-selected spacer.