Three-jaw puller for dismounting part on shaft through small deep hole

A three-jaw puller for dismounting a part on a shaft through a small deep hole comprises a rack, wherein a circular ring sleeve with threads on the inner wall is arranged at the middle part of the rack, three pieces of equant circular arc supports are welded on the outer wall of the circular ring sleeve, a screw rod is in internal threaded connection with the circular ring sleeve, an inner claw and an outer claw are connected on the support through a connecting piece, and a long and thin rod is arranged at the upper end of the screw rod. The three-jaw puller has the beneficial effects that the part on the shaft, which is in interference fit and in different kinds of shapes, can be conveniently dismounted through the small deep hole, and the designed dismounting requirement on the part on the shaft is reduced.