Practical bearing pre-running in device

The utility model provides a practical bearing pre-running in device. The practical bearing pre-running in device comprises a rotation arm, a friction wheel, a front cover plate, a bottom plate, a motor and a rear cover plate; the motor is horizontally fixed on the bottom plate; the rotating arm, being vertical to the axis of the motor, is fixed on the bottom plate, and can rotate along an axis parallel to the axis of the motor; the output shaft of the motor is sleeved with the friction wheel; and the friction wheel is provided with the front cover plate and the rear cover plate respectively which are distributed along an axial direction in a fore-and-aft manner. According to the practical bearing pre-running in device of the utility model, only the motor and a pre-running part occupy the overall area of the practical bearing pre-running in device, and therefore, the practical bearing pre-running in device only occupies a small area; each part of the practical bearing pre-running in device are fixed through bolts, and the number of the parts is small, and the structure of the practical bearing pre-running in device is clear and concise, and therefore, an ordinary operator can easily assemble and dissemble the practical bearing pre-running in device. With the practical bearing pre-running in device adopted, requirements of running in can be well satisfied without other equipment required, and impact on production can be avoided greatly.