The popularity of needle bearing

Changzhou yau shing bearing factory production of needle roller bearings, bearing heating temperature not over 120 degrees. As long as within the 120 - degree that is absolutely safe to bearing, because according to the characteristics of bearing steel, after more than 120 degrees to the bearing clearance and preloading change, with slow loose, causing problems such as the early damage. By special heat treatment, of course, the bearing can be heat to 200 degrees. By ring needle roller bearing, needle roller and cage. As for the same bearing capacity, the section size of needle roller bearing is minimal. Suitable for high velocity, high load, bearing place small space. Needle roller bearing is also called the needle roller, long shape. At the ends of the needle shape, has a round head, pointed cone, and concave arc. Commonly used needle roller bearing has the following structure: ( 1) Stamping outer ring needle roller bearing this kind of bearings have perforation type and sealing mouth two kinds, drawn cup needle roller bearings without inner ring, needle direct contact with the surface of the shaft, so the machining accuracy and heat treatment hardness should be of the shaft and bearing inner ring is the same. Have cage stamping outer ring needle roller bearing is suitable for high speed and overloading, used in machine tools, automobile, motorcycle transmission or textile machinery. No stamping ring needle roller bearing cage, because of the full needle, suitable for heavy load swing under the working conditions. As the plane frame, the shaft end of the main wing, etc. ( 2) Entity ferrule entity ferrule needle roller bearings, needle roller bearing common entity ferrule needle roller bearing is NA and RNA. Entity ferrule needle roller bearing used in machine tools, automobile gearbox more, it has the advantage of radial cross section size is small, the radial load bearing. Standard entity ferrule needle roller bearing has the cage, so high speed, can meet the requirements for machine tools, automobile gearbox. ( 3) Combined needle roller bearing needle roller bearing, is the entity ferrule needle roller bearing and ball bearing, roller bearing. ( 4) Needle roller and cage components needle roller and cage components, is in fact no ring needle roller bearing, the bearing used in gearbox, motorcycle, automobile connecting rod big and small. It is due to the high temperature in the cylinder, so the bearing resistance to high temperature.