It has very thin bones, and the needle roller bearing is equipped with thin and long rollers (the length of the roller is 3~10 times the diameter, and the diameter is generally not more than 5mm), so the radial structure is compact, and its inner diameter and load capacity are similar to When other types of bearings are the same, the outer diameter is the smallest, which is especially suitable for bearing results with limited radial installation size. Depending on the application, a bearing without an inner ring or a needle roller and cage assembly can be selected. At this time, the surface of the journal and the surface of the housing hole matched with the bearing are directly used as the inner and outer rolling surfaces of the bearing. In order to ensure the load capacity and running performance As with the bearing with ring, the hardness, machining accuracy and surface quality of the raceway surface of the shaft or housing hole should be similar to the raceway of the bearing ring. This type of bearing can only bear radial loads.
It is constantly being improved, and the needle profile face is slightly constricted at the proximal face. The needle roller bearing has a thick-walled outer ring, which is quenched at high temperature and high nitrogen. The rollers of high-precision sorting are guided by the ribs of the high-rigidity outer ring. Using linear contact, the rollers can easily rotate directly on the raceway, and can withstand huge load.
Its user-friendly design is very user-friendly. In order to remove stress, the outer ring of the support roller is designed with a curved surface. With sealing ring, the grease storage space is large, it provides long-term lubrication of lithium-based grease, and prolongs the lubrication interval.