Deep groove ball bearing installation method: press-fit: the bearing inner ring and the shaft so that a tight fit, the outer ring with the bearing hole is relatively loose fit available presses will be pressed on the shaft bearing and the shaft together with Together bearing load bearing hole, when the pressure mounted on the inner end surface of the bearing pad made of a soft metal material assembly sleeve (copper or soft steel), bearing outer ring with the bearing hole tight fit, the inner ring and the shaft When compared with a loose fit, for the bearing can be pressed into the bearing hole, then assemble the outer diameter of the sleeve seat should be slightly smaller than the diameter of the hole. If the bearing ring and the housing bore and shaft are a tight fit, install indoor lap and the outer ring to be simultaneously pressed into the shaft and housing bore, the assembly casing structure should be able to simultaneously charge the end face of tight bearing inner and outer rings.