Although the quality of imported bearings is good, there are also many problems. Let's analyze some of their specific situations below:
Excessive lubricant leakage, discoloration Cause: Excessive lubricant, foreign matter intrusion, abrasion of powder, foreign matter, etc.
Countermeasure: Use a proper amount of lubricant, study and change the choice of lubricant, study the replacement of the bearing, and clean the outer casing.

Regular noise Cause 1: Indentation, rust or scratches on the rolling surface due to foreign matter,
Countermeasures: Replace the bearings, clean the parts, improve the seals, and use a clean lubricant.
Reason 2: (after steel carburizing) surface deformation,
Countermeasure: Replace the bearing and pay attention to its use.
Reason 3: The raceway surface is peeled off,
Countermeasure: Replace the bearing.

Irregular noise Cause 1: The clearance is too large,
Countermeasure: Study the fit and bearing clearance and modify the preload.
Reason 2: Foreign matter intrusion,
Countermeasures: Study replacement of bearings, cleaning related parts, improving sealing devices, and using clean lubricants.
Reason 3: Spherical injury, peeling,
Countermeasure: Replace the bearing.

Large metal noise Cause 1: Abnormal load,
Countermeasure: Correct the fit, study the bearing clearance, adjust and load, and correct the position of the housing shoulder.
Reason 2: Poor installation,
Countermeasures: Machining accuracy of shaft and outer casing, improvement of mounting accuracy, and installation method.
Reason 3: The lubricant is insufficient or not suitable,
Countermeasure: Replenish the lubricant and choose the appropriate lubricant.
Reason 4: The rotating parts are in contact,
Countermeasure: Modify the contact part of the curved seal.

Large vibration (bounce of the shaft)
Reason 1: (after steel carburizing) surface deformation, countermeasures: pay attention to bearing replacement operation.
Reason 2: Peeling, Countermeasure: Replace the bearing.
Cause 3: Poor installation, countermeasure: Modify the shaft, the right angle of the housing shoulder, and the straight angle of the side of the pad.
Cause 4: Intrusion of foreign matter, countermeasures: Replace the bearings, clean the parts, and improve the sealing device.

Abnormal temperature rise Cause 1: Too much lubricant,
Countermeasure: Reduce the lubricant, use it in moderation, and choose a harder grease.
Reason 2: The lubricant is insufficient or not suitable,
Countermeasure: Replenish the lubricant and choose the appropriate lubricant.
Reason 3: abnormal load,
Countermeasure: Modify the fit, study the clearance of the bearing, adjust the preload, and modify the position of the shoulder of the outer casing.
Reason 4: Poor installation,
Countermeasures: Improve machining accuracy, mounting accuracy, and mounting methods for shafts and housings.
Reason 5: The creep of the mating surface and the friction of the sealing device are too large.
Countermeasure: replace the bearing, study the fit, modify the shaft and outer casing, change the seal form

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