In everyday life, the frequency of bearing usage is nothing short of frequent. However, it's a common issue that bearings tend to suffer damage during use. If such damage occurs, what methods can we use to address it? Shenyang SKF Bearing Merchant summarizes the following experiences:
The surface condition exhibits a dark side with slight wear, featuring numerous micro-cracks extending from the surface inward to depths of 5-10mm, with minor detachment occurring over a wide area.
Reason: Inadequate lubricant. Foreign matter has entered the lubricant. Poor lubricant quality results in rough surfaces. The mating rolling component surfaces do not have good cleanliness.
Action: Select lubricants to enhance the sealing device and improve the surface finish of paired rolling parts.
Two, Fracture and Damage Conditions: Fracture refers to a partial breakage caused by localized impact or excessive load applied to the edge of the raceway wheel or the roller corner, resulting in a small portion of the structure fracturing.
Reason: Damage during installation. Overload. Dropping, etc., due to misuse.
Measures: Improve installation methods. Correct loading conditions. Properly install the bearings, ensuring the flanges are supported.
Cracks and fissures, damage conditions: Cracks refer to the crack damage that occurs on the raceway wheel or rolling element. If continued to be used, it also includes fissures resulting from the progression of cracks.
Reason: Excessive overfilling. Overload, impact load. Delamination is developing. Heating and micro-vibration wear due to contact between the raceway wheel and the installed components. Heating caused by creep. Poor cone angle on the cone shaft. Poor cylindrical accuracy of the shaft. The fillet radius of the shaft step is larger than the chamfer of the bearing, causing interference with the bearing chamfer.
Action: Proper overhang amount. Check load conditions. Improve installation methods. Ensure proper shaft shape.
Four:剥落,损伤状态: When the bearing is rotated under load, the raceways or rolling surfaces of the inner and outer rings exhibit a fishscale-like剥落 due to rolling fatigue.
Reason: Overload. Poor installation, foreign matter intrusion, and water ingress due to excessive torque load. Inadequate lubrication, unsuitable lubricant, improper bearing clearance. Poor bearing housing precision, uneven rigidity of the bearing housing, and large deflection of the shaft, leading to rust, erosion points, scratches, and indentations.
Action: Inspect the size of the load and further research the improved bearing installation methods. Enhance the sealing devices and rust prevention during shutdown. Utilize lubricants with appropriate viscosity and improve lubrication techniques. Check the accuracy of the shaft and bearing housing. Inspect the clearance.
Five, Indentation and damage conditions: Dents or凹痕 are formed on the rolling surface or rotating surface when metal particles or foreign objects are bitten into. Indentations are also formed at the spacing intervals of the rolling bodies due to impacts during installation, etc.
Reason: Foreign objects such as metal powders, excessive impact loads during assembly or transportation.
Action: Improve shaft sleeve. Enhance sealing mechanism. Filter lubricating oil. Improve assembly and usage methods.
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