stripping
Damage status: FAG bearing load bearing rotates again, inner ring and outer ring raceway surface or rolling decent present designed stripping due to rolling fatigue phenomenon.
Reason: too much load.Bad installation (non linear) torque load foreign invasion, into the water.Poor lubrication, lubricants inappropriate FAG bearing clearance is not appropriate.FAG bearing box accuracy is bad, FAG bearing box of large uneven rigidity of shaft deflection of rust, erosion, abrasion and creasing surface deformation phenomenon () the development of the cause.
Measures: check the size of load and again institute FAG bearing improve installation method is used to improve the sealing device, when stop rust.Using the appropriate lubricant viscosity, improving the lubrication method.Check the shaft and the accuracy of FAG bearing box.Check the clearance.
skinning
Damage status: present a dark side, with a mild wear dark surface from the surface of multiple deep down inside to tiny cracks of 5 to 10 m, and on a larger scale slightly off (the tiny stripping)
Reason: the lubricant is not appropriate.Foreign body into the lubricant.Lubricant bad cause surface roughness.Matching rolling parts surface finish is not good.
Measures: improve sealing device to improve matching rolling lubricant selection of parts surface finish.
Card injury
In the injury is due to the damage state of sliding surface injury parts of small burns summary of surface damage.Slide face, rolling surface circumferential direction of linear scars.End of the roller set linear scar near the end of the roller shaft torus card.
Reason: too much too much load, preloading.Bad lubrication.Foreign body nip.The inner ring of the outer ring tilt, the deflection of shaft.The precision of the axis, FAG bearing box.
The size of the measures: check the load.Preloading is appropriate.Improve lubricant and lubricating method.Check the accuracy of shaft, FAG bearing box.
The fracture
Damage status: fracture refers to the roller Angle of groove wheel rim or on the local part are exerted impact or excessive load and a small part of the fracture.
Reason: when installation has taken a knock.The load is too large.Using bad fall, etc.
Measures: to improve the installation method (using hot charging, using the appropriate tool holder).Correct the load conditions.FAG bearing installed, supporting to guard.
Crack, crack
Damage status: crack refers to the crack damage raceway wheel or roller.If continue to use, will also include the development of the crack fracture.
Reason: greater than surplus quantity.Too much load, impact load.Stripping.Because of the raceway contact of wheel and install components of fever and micro vibration wear.Fever caused by creep.The cone shaft taper Angle.Axis of the cylindricity.Steps of the shaft radius is bigger than FAG bearing chamfer and cause interference with FAG bearing chamfer.
Appropriate measures: interference quantity.Check the load conditions.Improve the installation method.The shape of the shaft to appropriate.
indentation
Damage status: bite into a tiny metal powder, foreign bodies, such as on the raceway surface or rotating the dent.Due to impact, such as the installation on the roller spacing interval to form the concave (brinell hardness indentation).
Reason: the foreign body nip of metal powder etc.Assembly or transport process under impact load is too big.
Measures: shock collar.Improve the sealing device.Filter the lubricating oil.Improve assembly and method of use.
Pear skinning pitting
Damage status: the weak glossy dark on the surface of the raceway pear peel pitting.
Reason: the foreign body nip appeared in the process of lubrication.Due to the moisture in the air and condensation.Bad lubrication.
Measures: to improve the sealing device.Fully filter lubricating oil.Using the appropriate lubricant.

Wear and tear
Damage status: the so-called wear is caused by friction of raceway surface or rolling surface, roller ends, shaft ring surface and maintains a concave surface of the wear and tear.
Reason: foreign invasion, rust electric erosion caused by development.Bad lubrication.Due to the irregular motion of rolling body caused by the skid.
Measures: to improve the sealing device.Cleaning FAG bearing box.Fully filter lubricating oil.Check the lubricant and lubricating method.To prevent the non linear.
The micro vibration wear
Damage status: due to the relatively tiny repeatedly sliding between two contact surfaces and the wear and tear in the contact section of the raceway surface and rolling body on.Due to wear reddish brown and black powder, and therefore is also called the micro vibration wear corrosion.
Reason: poor lubrication.Swaying motion of small amplitude.Insufficient amount of interference.
Measures: using the appropriate lubricant.Preloading.Check amount of interference.To cooperate with the surface coating lubricant
Pseudo brinell indentation
Damage status: during the micro vibration in the rolling element and raceway contact part of the wheel wear due to vibration and shaking, tired like brinell indentation impressions.
Reason: in the transport process of medium FAG bearing vibration and swing in the stall.The motion of the small amplitude motion.Bad lubrication.
Measures: in the process of transportation for shaft and FAG bearing box to be fixed.Transportation in inner ring and outer ring are to be packed separately.Plus the preloading reduce vibration.