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FBJ Needle roller bearing
- Category: Needle roller bearing
- Description:Needle bearing is a roller bearing with cylindrical roller, and its diameter is long and thin This roller is c...
- Email:admin@jngybearing.com
- TEL:+86 15165026537
- Company:Ji'nan Guang Yue Pml Precision Mechanism Ltd Of China
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Needle bearing is a roller bearing with cylindrical roller, and its diameter is long and thin. This roller is called a needle roller. In spite of the smaller section, the bearing has a high load bearing capacity. The needle roller bearing is equipped with a thin and long roller (the roller diameter D < 5mm, L/D > 2.5, L as the roller length), so the radial structure is compact and the inner diameter and load capacity are the same as other types of bearings, which are especially suitable for radial safety. A supporting structure with limited size.
According to the different use situation, the bearing or needle roller and the cage assembly can be selected. At this time, the surface of the shaft neck and the outer surface of the shell are directly used as the inner and outer rolling surface of the bearing, so as to ensure the same load and running performance as the bearing ring bearing, the hardness of the surface of the axle or the outer shell hole raceway, and the machining accuracy. And the surface quality should be similar to the raceway of the bearing ring. This kind of bearing can only bear radial load.
The bearing capacity of the needle roller bearing is large. It is suitable for the bearing structure with limited size. The surface of the neck is hardened as a rolling surface. The bearing is pressed into the seat hole, and no further axial orientation is needed. A proper amount of grease should be injected into the bearing before installation. In general, after assembly, the BK type bearing is not used in the support of the unextended end of the neck. The end seal is sealed and can withstand a small axial movement.
The needle roller bearing is equipped with a thin and long roller (3~10 times the diameter of the roller, and the diameter is generally not more than 5mm), so the radial structure is compact, its inner diameter and load capacity are the same as other types of bearings, and the outer diameter is the smallest, especially suitable for the supporting structure with the restricted radial installation size. According to the different application occasions, needle rolling bearings should be combined with bearing rings and use according to their different machining accuracy and surface quality. Roller bearing is a bearing unit composed of centripetal needle roller bearings and thrust bearing parts.
