Bearing press fitting device

The bearing press-in device includes gripper and pressure head, said gripper includes upper base plate, lower base plate and balls, the balls are placed between upper base plate and lower base plate by means of ball-holder, one side of lower base plate is equipped with positioning piece, and another side is equipped with gripping piece, its upper base plate is equipped with a spring plate. Its pressure head includes connecting bar, pressure sleeve, guide sleeve and spring, in which the guide sleeve is positioned outside pressure sleeve, and the connecting bar and pressure sleeve are mounted co-axially, and the spring is placed outside of pressure sleeve. When the bearing is pressed in by using said invention, its maximum press-in force and smooth press-in force is approximately equal to 1/5 of that of traditional method, it can ensure assembling quality.