Bearing mating position diameter
For the medium and large bearings installed on Bearing the withdrawal sleeve, they can be easily disassembled with hydraulic nuts. It is recommended to install a stop behind the hydraulic nut at the shaft end. The stop device can prevent the withdrawal sleeve and the hydraulic nut from flying out of the shaft when the withdrawal sleeve is suddenly separated from the mating position.
Needle roller bearings are equipped with thin and long rollers (the roller length is 3 ~ 10 times the diameter, and the diameter is generally no more than 5mm). Therefore, the radial structure is compact. Its inner diameter size and load capacity are the same as other types of bearings, and the outer diameter is the smallest. It is especially suitable for supporting structures with limited radial installation size According to different application occasions, needle roller bearing without inner ring or needle roller and cage assembly can be selected. At this time, the journal surface and shell hole surface matched with the bearing are directly used as the inner and outer rolling surfaces of the bearing. In order to ensure that the load capacity and operating performance are the same as those of the bearing with ferrule, the hardness, machining accuracy and surface quality of the raceway surface of the shaft or shell hole should be the same as that of the bearing ferrule Purpose combined needle roller bearing is a bearing unit composed of centripetal needle roller bearing and thrust bearing components. It has compact structure, small volume and high rotation accuracy. It can bear a certain axial load while bearing a high radial load. Moreover, the product has various forms of structure, wide adaptability and easy installation. Combined needle roller bearings are widely used in machine tools, metallurgical machinery, Bearing textile machinery, printing machinery and other mechanical equipment, and can make the mechanical system design very compact and dexterous.
