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Recommendation of Long-Life Heavy-Duty Bearings
Chengdu Heavy-Duty Research Institute
1. Introduction
The bearing life has long been the major concern of customers, manufacturers and scholars since the rolling bearing was available one hundred years ago. On the basis of elastic mechanics, touch fatigue theory, fatigue statistics and EHD theory etc, the definitions and formulas of load rating and rating life have been worked out by ISO and widely adopted. Meanwhile, relative factors affecting the bearing life have been widely researched since 1940s and great achievements have been made, improving the fatigue life and decreasing the scattering scale (ratio of longest life to shortest life) from more than 100 times to less than 10 times.
To improve the bearing life and reduce its consumption is the eternal objective of both customers and manufacturers. We recommend our research & development for more than 10 years about improving the bearing life.
2. Definition of long-life bearing
Rolling bearings have reached first-class international design level. They are made of good quality steel, lots of measures to improve life have been taken in cool and heat treatments (including technology, equipment, measurement and assembly), and comparison tests have been carried out on good-condition equipment or test machines. The bearing life proved to be greatly improved, therefore it is called long-life bearing.
3. Meaures in researching and developing long-life bearing
3.1Complete three projects of the ministry and province:
(1)Project of
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| AH3319 bearing | 95 | ||
| AHX3219 bearing | 95 |