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Reasons for forming bearing damage and countermeasures

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Rolling bearing; if it is not selected correctly, it can be used correctly; before the bearing life; can be used for a long time; in this situation; the damage is stripping. On the other hand; there is accidental early damage; The early damage of the use; as the cause of the early damage; the use of scare and smooth thinking; and then the invasion of foreign bodies; the error of bearing assembly and the deflection of the shaft, the study of the shaft and the bearing box can not be said. It can be said These conditions are more coincident with each other. Therefore, it is necessary to know the machine used for the bearing; the conditions of use; the layout of the outer periphery of the bearing; if it can clarify the condition before and after the attack; Reasons for investigation; it can avoid the recurrence of similar incidents.
â—† Reasons for peeling damage condition When the bearing receives the load rotation; the raceway surface or the rolling surface of the inner ring and the outer ring have a scale-like peeling appearance due to tumbling fatigue. The load is too large.
Poor equipment (non-linear)
Torque load foreign matter intrusion, water.
Poor smoothness, smoothing agent is not suitable for bearing clearance is not appropriate.
The accuracy of the bearing housing is not good; the rigidity of the bearing housing is uneven, the deflection of the shaft is large, the corrosion, the corrosion point, the abrasion and the indentation (the appearance of the surface deformation) are carried out. Check the size of the load and the method of improving the bearing used in the re-discussion Improve sealing equipment, stop rust prevention.
Use a smoothing agent of the right viscosity to improve the smoothness.
View the accuracy of the shaft and bearing housing.
View the clearance.
â—† Card injury status reasons The so-called card injury is due to the appearance of some minor burns on the sliding surface injury and the appearance of the external damage.
Linear flaws in the circumferential direction of the slide surface and the rolling surface.
The pendulum-like flaw on the end face of the roller is close to the jamming of the collar surface of the roller end face. Excessive load, excessive preload.
Poor smooth.
Foreign body bites into.
The outer ring outer ring is skewed and the axis is deflected.
The accuracy of the shaft and bearing housing is poor. Check the size of the load.
Preload should be appropriate.
Improve the smoothing agent and smooth method.
View the accuracy of the shaft and bearing housing.
â—† The reason for the damage of the scratched condition is the so-called abrasion; it is the re-raceway surface and the tumbling surface quotient; there is a summary of the appearance of the small burns that follow the tumbling slip and the oil film thermal cracking attack. The attack has a sticky appearance. High speed light load rapid acceleration and deceleration smoothing agent is not appropriate.
Intrusion of water improves preloading and improves bearing clearance. Smoothing agent with good oil film is used to improve the smoothing method. Improvement of sealing equipment â—† Causes of crack damage. The so-called cracking refers to some slanting of the rim or roller angle of the raceway wheel. Impact or excessive load and a little cracking. The equipment was shocked.
The load is too large.
Poor use and other reasons. Improve equipment methods (select hot loading; use the appropriate things folder).
Correct the load conditions.
The bearing equipment is in place; the rib is supported.
â—† Indentation damage condition Causes the bite into a small metal powder; the time of foreign matter, etc.; the dent on the raceway or transition surface.
Because the equipment is impacted when it is equal; a concave surface (Brinell hardness indentation) is formed at the distance between the rolling elements. Foreign matter such as metal powder bites into it.
The impact load during assembly or during the transportation process is too large. Impact bushing.
Improve sealing equipment.
Filter smooth oil.
Improve assembly and application methods.
â—† Causes of burn damage The rolling wheel, rolling body and the holding frame are heated rapidly during rotation until discoloration, softening, welding and damage.
Excessive load (preload is too large).
The speed is too large.
The clearance is too small.
Intrusion of water and foreign matter.
The precision of the shaft and bearing housing is poor, and the deflection of the shaft is large. Discuss the smoothing agent and smooth method.
Correct the selection of bearings.
Discuss cooperation, bearing clearance and preloading.
Improve sealing equipment.
View the accuracy of the shaft and bearing housing.
Improve equipment methods.
â—† Rusting; Causes of corrosion damage The rust and corrosion of the bearing include the pit rust of the raceway wheel, the tumbling body surface, all rust and corrosion. Intrusion of water, corrosive substances (paint, gas, etc.).
Smoothing agent is not suitable.
Water droplets are attached due to the condensation of water vapor.
Stop when the temperature is high and wet.
The transportation process is heavy and rust-proof.
The storage status is not suitable.
Not suitable for use. Improve sealing equipment.
Discuss the sleek approach.
Anti-rust method when stopping.
Improve the custody method.
Pay attention when using it.

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