1, single row deep groove ball bearings
2, single row deep groove ball bearing with dust cover
3. Single row deep groove ball bearing with dust cover and sealing ring
4. Single row deep groove ball bearing with stop groove and stop ring on the outer ring
5. Deep groove ball bearing with ball gap
6, double row deep groove ball bearings
According to the size and size of deep groove ball bearings can be divided into:
(1) Miniature bearings----bearings with a nominal outer diameter range of 26mm or less; (2) Small bearings----bearings with a nominal outer diameter range of 28-55mm; (3) small and medium-sized bearings--- - Bearings with a nominal outer diameter range of 60-115mm; (4) Medium and large bearings----bearings with nominal outer diameters ranging from 120-190mm (5) Large bearings----nominal outer diameters range from 200 -430mm bearings; (6) Extra large bearings----bearings with a nominal outer diameter range of 440mm or more.
Deep groove ball bearing installation method 1: press fit: the inner ring of the bearing is tightly matched with the shaft. When the outer ring and the bearing seat hole are loosely fitted, the bearing can be press-fitted on the shaft first, and then the shaft is coupled with the bearing. Installed into the bearing housing hole together, on the end surface of the bearing inner ring when pressing, the gasket is made of soft metal material (copper or mild steel), the outer ring of the bearing is tightly matched with the bearing housing hole, and the inner ring and the shaft are When loosely fitting, the bearing can be pressed into the bearing housing hole first. At this time, the outer diameter of the assembly sleeve should be slightly smaller than the diameter of the seat hole. If the bearing ring is tightly fitted with the shaft and the seat hole, install the inner ring and The outer ring should be pressed into the shaft and the seat hole at the same time. The structure of the assembly sleeve should be able to simultaneously tighten the end faces of the inner ring and the outer ring of the bearing.
Deep groove ball bearing installation method 2: heating coordination: by heating the bearing or bearing seat, using thermal expansion to transform the tight fit into a loose fit installation method. It is a common and labor-saving installation method. This method is suitable for large interference. For the installation of the bearing, put the bearing or the ferrule of the separable bearing into the fuel tank and heat it evenly 80-100 °C before hot charging, then remove it from the oil and load it on the shaft as soon as possible to prevent the inner ring end face and shoulder from cooling. The fitting is not tight, and the bearing can be axially tightened after cooling. When the bearing outer ring is tightly matched with the light metal bearing seat, the hot bearing method of the heating bearing seat can be used to avoid the surface of the bearing being scratched. When heating the bearing with the oil tank, there should be a grid at a certain distance from the bottom of the box, or the bearing should be hung with a hook. The bearing should not be placed on the bottom of the box to prevent the sinking of impurities into the bearing or uneven heating. There must be a thermometer in the tank. Strictly control the oil temperature should not exceed 100 °C to prevent tempering effect and reduce the hardness of the ferrule.