Bearing performance index
Source:未知Author:hyzc Addtime:2021-09-09 Click:
Bearings are an important part of contemporary machinery and equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. The manufacturing process of the bearing usually uses seven indicators to measure its performance.HONBbearing07
Hardness is one of the important qualities of bearing quality, and it has a direct impact on contact fatigue strength, wear resistance, and elastic limit. The hardness of the bearing in use should generally reach HRC61~65, so that the bearing can obtain higher contact fatigue strength and wear resistance.
In order to prevent bearing parts and finished products from being corroded and rusted during processing, storage and use, the bearings are required to have good rust resistance.
When the shaft center line is inclined relative to the center line of the bearing seat hole, the bearing can still work normally. Double-row radial spherical ball bearings and double-row radial spherical roller bearings have good self-aligning performance. The working speed of the rolling bearing should be lower than the limit speed. Selecting high-precision bearings, improving cage structure and materials, using oil mist lubrication, and improving cooling conditions can all increase the limit speed.
The lubrication of the bearing can reduce the internal friction and wear of the bearing, prevent burning and sticking; extend its service life; eliminate frictional heat and cooling, prevent the bearing from overheating, and prevent the lubricating oil from aging; it also prevents foreign matter from intruding into the bearing, or preventing rust and corrosion. Effect.
When the bearing is working, not only rolling friction occurs between the ring, rolling element and the cage, but also sliding friction occurs, so that the bearing parts continue to wear. In order to reduce the wear of bearing parts, maintain the accuracy and stability of the bearing, and prolong the service life, the bearing should have good wear resistance.
6.Contact fatigue strength
Under the action of cyclic load, the contact surface is prone to fatigue damage, that is, cracking and peeling, which is the main damage form of the bearing. Therefore, in order to improve the service life of the bearing, the bearing must have a high contact fatigue strength.
In the production process, bearing parts have to go through many cold and hot processing procedures. In order to meet the requirements of large-scale, high-efficiency and high-quality, the bearing should have good processing performance. For example, cold and hot forming performance, cutting performance, hardenability and so on.
Luoyang Hongyuan Bearing Technology Co., Ltd. (HONB) was established in December 2005, located in the Luoyang ,China. HONB with more than 400 employees which specializes in manufacture of YRT,YRTS,YRTM,ZKLDF Series rotary table bearings, RA,RB,RE,RU,CRBH,SX Series crossed roller bearings and CSG,SHG,HYR series robot reducer bearings. The precision grades are P2, P4 and P5, and the size range is 20mm ~2000mm.
YRT rotary table bearings
ZKLDF axial angular contact ball bearings
Crossed roller bearings