There are many factors that affect the life of the slewing bearing. Different working conditions, different materials, and different bearing types will affect the service life of the bearing. For this reason, the life is not a standardized number but depends on the materials, processes, and production levels during production. , as well as the use method during use, maintenance and lubrication conditions and other factors are comprehensively determined.
How long is the service life of the slewing bearing in general
According to the influence of the bearing material, assembly, tolerance fit, lubrication and other factors, the service life of the slewing bearing under normal conditions ranges from 10,000 to 192,000 hours. We generally say that the service life of bearings is also different for different types of bearings.
Like ordinary bearings, the service life of the bearing refers to the failure of use, such as pitting, spalling, etc., which cannot work normally. For spindle bearings, precision bearings, etc., which require high precision, when the running accuracy of the bearing fails to meet the requirements, it will fail, but it is far from the standard of failure of ordinary bearings. So this is also the reason for the different service life of the slewing bearing.
Factors affecting the service life of slewing bearings
1. Manufacturing factors
(1) Design: Whether the diameter, number, ring wall thickness, effective length of rolling contact, tightness, radian and size of the contact surface of the raceway of the bearing are compatible with the matching equipment.
(2) Material: Martensite in the quenched steel, impurities in the steel, chemical composition, gas, cracks, etc., during the bearing production process, the impact of the material on the quality of the bearing is a hard injury, which cannot be compensated by technology in the later stage.
(3) Manufacturing: In the process of producing slewing bearings, the hardness of bearing parts, bearing metallographic structure, surface burns, bumps and scratches, roughness, poor parts grouping, production accuracy, bearing clearance, cleanliness, residual magnetism and parts Residual stress on the working surface will affect the service life of the bearing, and the impact in the manufacturing process is similar to the congenital quality problem. The bearing with defects manufactured under the same working conditions has a shorter life than the standard and qualified bearing.
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