To prevent damage to a bearing.SOLUTION: In a hub bearing press-fitting tool 10A, a bearing inner race inner peripheral surface 301 is supported by a body part support outer peripheral surface 21 of a body part 20, a body part outermost peripheral surface 22 of the body part 20 is guided by a guide inner peripheral surface 51 of an outer guide part 50 fitted to a wheel hub 200, a spindle outer peripheral surface screw groove 102 of a spindle 100 and a body part inner peripheral surface screw groove 24 are engaged with each other, a bearing inner race 300 is guided between a spindle outer peripheral surface 101 and a wheel hub inner peripheral surface 201, and the bearing inner race 300 is inserted therebetween without occurrence of unnecessary contact. A body part outer peripheral surface screw groove 26 and a nut part inner peripheral surface screw groove 41 of a nut part 40 are engaged with each other, a pressing force is applied to a pressing rod 32 of a press-fitting part 30A, the bearing inner race 300 is press-fitted without addition of an impact by a pressing part 31 to which the pressing force is transmitted by the pressing rod 32, and thereby damage to a bearing can be prevented.SELECTED DRAWING: Figure 13
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