Rolling bearing, if there is no wrong choice can be used correctly, until the bearing life, can use for a long time, in this case, the damage status to divest.
On the other hand, there are unexpected injury earlier, and yield to the early damage of use, as the reasons of early damage, not enough to use scare the consideration on the lubrication and, in turn, and foreign invasion, the error of the bearing assembly and axis deflection of big, not enough research on shaft and bearing box, etc.
It can be said that these reasons the situation more overlap each other.
So, want to use machine to fully understand the bearing, conditions of use, bearing outer structure based on, if we can find out before and after the accident situation, again according to the damage of the bearing and a variety of reasons in stripping damage status reason measures to withstand the load bearing rotates, the inner ring and outer ring raceway surface or rolling decent present designed stripping due to rolling fatigue phenomenon.
The load is too large.
Install the bad (
Non linear)
The torque load foreign invasion, into the water.
Poor lubrication, lubricants inappropriate bearing clearance is not appropriate.
Bearing box accuracy is bad, the uneven rigidity of shaft deflection of bearing box big rust, erosion point, scratch and indentation (
The surface deformation phenomenon)
The development of the cause.
Line inspection, can prevent the similar accidents from happening again.
Card wounded state injuries measures the so-called card is produced in the slip surface injury minor burns summary of part of the 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.
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 shaft, bearing box.
Check the load size.
Preloading is appropriate.
Improve lubricant and lubricating method.
Check the shaft, the precision of the bearing housing.
Measures the so-called scratch scratch damage status reasons, it is again raceway surface and rolling consult personally, with rolling slippage and the small burns the sum of the oil film cracking occurring in the course of surface damage.
Rough surface with a stick.
Measures the so-called scratch scratch damage status reasons, it is again raceway surface and rolling consult personally, with rolling slippage and the small burns the sum of the oil film cracking occurring in the course of surface damage.
Rough surface with a stick.
Fracture damage state measures refers to the so-called fracture reason of raceway on the wheel rim or local part of the roller Angle are exerted impact or excessive load and a small part of the fracture.
When installation has taken a knock.
The load is too large.
Using bad fall, etc.
The indentation damage status reason measures bite into a tiny metal powder, foreign bodies, such as on the raceway surface or rotating the dent.
Due to impact, such as installation on the roller spacing interval to form the concave (
Brinell hardness indentation)
。
The metal powder and other foreign body nip.
Assembly or transport process under impact load is too big.
Shock collar.
Improve the sealing device.
Filter the lubricating oil.
Measures to boost the state assembly and use of burn injury causes rolling wheel, roller and cage in the rotating heat until discolored sharply, softening, deposition and damaged.
Bad lubrication.
Too much load (
Preloading is too big)
。
Speed is too large.
Clearance is too small.
Water intrusion, foreign body.
Axis, the precision of the bearing housing and shaft deflection.
Rusting, corrosion damage state reason measures has rolling wheel bearing rust and corrosion on the surface of the rolling surface rust pit type, comprehensive rust and corrosion.
Water, corrosive substances (
Paint, gas, etc. )
The invasion.
Lubricant is not appropriate.
Due to the condensation of water vapor with water droplets.
When the high temperature high humidity halt.
Heavy rust bad transport process.
Takes care of the state is not appropriate.
Not appropriate to use.
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