Bearing Abnormal Phenomenon And Cause Analysis

Loud metal noise
Reason 1: abnormal load, countermeasure: correct cooperation, study bearing clearance, adjust and load, correct the position of the shell shoulder.
Reason 2: poor installation, countermeasure: shaft, shell processing accuracy, improve installation accuracy, installation method.
Reason 3: insufficient or unsuitable lubricant, countermeasure: supplement lubricant, select appropriate lubricant.
Reason 4: The rotating parts have contact, countermeasure: modify the contact part of the curved road seal.

Regular noise
Reason 1: Indentation, rust or scars on the rolling surface caused by foreign bodies. Countermeasures: replace bearings, clean relevant parts, improve the sealing device, and use clean lubricants.
Reason 2: (after steel carburizing) surface deformation, countermeasure: replace the bearing, pay attention to its use.
Reason 3: raceway surface stripping, countermeasure: replace bearing.

Irregular noise
Reason 1: The clearance is too large, countermeasure: study the fit and bearing clearance, modify the preload.
Reason 2: foreign body invasion, countermeasures: study the replacement of bearings, cleaning the relevant parts, improve the sealing device, the use of clean lubricants.
Cause 3: spherical damage, peeling, countermeasure: replace bearing.

Abnormal temperature rise
Reason 1: too much lubricant, countermeasure: reduce lubricant, use the right amount, choose harder grease.
Reason 2: insufficient or unsuitable lubricant, countermeasure: supplement lubricant, select

appropriate lubricant.
Reason 3: abnormal load, countermeasure: modify the fit, study the clearance of the bearing, adjust the preload, modify the position of the retaining shoulder of the shell.
Reason 4: poor installation, countermeasure: improve shaft and shell processing accuracy, installation accuracy, installation method.
Reason 5: creep of the mating surface and excessive friction of the sealing device. Countermeasures: replace the bearing, study the mating, modify the shaft and shell, and change the sealing form.

Large vibration (shaft beating)
Reason 1: (after steel carburizing) surface deformation, countermeasure: pay attention to bearing replacement operation.
Reason 2: stripping, countermeasure: replace bearing.
Reason 3: poor installation, countermeasures: modify the right Angle of the shaft, the shell shoulder block, and the straight Angle of the side of the liner.
Reason 4: foreign body invasion, countermeasures: replace the bearing, clean the parts, improve the sealing device, etc.