The quality of the garage door bearing determines whether the whole door is operating normally, will there be an abnormal sound. When the garage door bearing works, the ferrule, the rolling body, and the holder do not only have rolling friction, but also slidably friction, thereby causing the bearing parts to constantly wear. In order to reduce the wear of the bearing part, maintain the stability of the bearing accuracy, extend the service life, and the bearing steel should have good wear resistance. form. Under the action of cycle load, the garage door bearing, the contact surface is prone to fatigue, that is, crack flakes, which is the main damage form of bearings. Therefore, in order to improve the life of the bearing, the bearing steel material must have high contact fatigue strength.