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Plastic bearing manufacturers tell you the reasons for bearing damage


Rolling bearings can be used for a long period of time before bearing life if they are not selected correctly. In this case, the damage state is peeling. On the other hand, there are accidental early damage, and early damage that can not stand the use. As the cause of this early damage, there are insufficient considerations in the use of scarification lubrication, and further foreign matter intrusion, bearing assembly errors, and shaft deflection. Large, insufficient research on shafts and bearing housings. It can be said that these reasons overlap more often.
Therefore, on the basis of fully understanding the bearings used in the machine, the conditions of use, and the structure of the bearing periphery, if the situation before and after the accident can be clarified, and combined with the damage of the bearing and a variety of reasons, we can prevent similar accidents Happened again. 就来说说吧! Let's talk about plastic bearing manufacturers !

Strip
▷ Damage status:
When the bearing rotates under load again, the raceway surface or rolling body surface of the inner ring and the outer ring exhibits a scale-like peeling phenomenon due to rolling fatigue.
▷ Reason:
■ Excessive load
■ Poor installation (non-linear)
■ Moment load
■ Foreign matter intrusion and water ingress
■ Poor lubrication and inappropriate lubricant
■ Inappropriate bearing clearance
■ The accuracy of the bearing box is not good, and the rigidity of the bearing box is uneven.
■ Large shaft deflection
■ Development due to rust, erosion points, abrasions and indentations (surface deformation phenomenon)
▷ Measures:
■ Check the size of the load and the bearings used in the research
■ Improved installation method
■ Improved sealing device, anti-rust during shutdown
■ Use a lubricant with proper viscosity and improve lubrication method
■ Check the accuracy of the shaft and bearing housing
■ Check clearance

Stuck
▷ Damage status:
A so-called jam is a surface damage caused by a small amount of burns in a part of a sliding surface injury.
Linear flaws in the circumferential direction of the slide surface and rolling surface.
The trochoidal scar on the roller end face is close to the jamming on the collar surface of the roller end face.
▷ Reason:
■ Excessive load, excessive preload
■ Poor lubrication
■ Foreign matter bites
■ Inner and outer ring inclination, shaft deflection
■ Poor accuracy of shaft and bearing box
▷ Measures:
■ Check the size of the load
■ Preload
■ Improving lubricants and lubrication methods
■ Check the accuracy of shaft and bearing box

Plastic bearing manufacturers

Abrasions
▷ Damage status:
The so-called abrasion is the surface damage of the re-rolling surface and rolling surface quotient, which is caused by the aggregation of micro burns caused by rolling slip and oil film thermal cracking. Rough surface with stickiness.
▷ Reason:
■ High-speed light load
■ Rapid acceleration and deceleration
■ Inappropriate lubricant
■ Invasion of water
▷ Measures:
■ Improved preload
■ Improve bearing clearance
■ Use lubricant with good oil film
■ Improved lubrication method
■ Improved sealing device

fracture
▷ Damage status:
The so-called break means that a small part breaks due to the application of an impact or an excessive load to a part of the rib or roller angle of the track wheel.
▷ Reason:
■ Have been hit during installation
■ Excessive load
■ Poor use such as dropping
▷ Measures:
■ Improve the installation method (use hot mounting, use appropriate tool holder)
■ Correct load conditions
■ The bearing is installed in place, so that the rib is supported

Indentation
▷ Damage status:
When biting into small metal powder, foreign matter, etc., dents on the raceway surface or the rotating surface.
Due to impact during installation, etc., a concave surface (Brinell hardness indentation) is formed in the pitch interval of the rolling elements.
▷ Reason:
■ Bite of foreign matter such as metal powder
■ Excessive shock load during assembly or transportation
▷ Measures:
■ Impact sleeve
■ Improved sealing device
■ Filter lubricant
■ Improved assembly and use methods

burn
▷ Damage status:
The raceway wheels, rolling elements, and cages heat rapidly during rotation until they become discolored, softened, welded, and damaged.
▷ Reason:
■ Poor lubrication
■ Excessive load (excessive preload)
■ Excessive speed
■ The clearance is too small
■ Intrusion of water and foreign matter.
■ Poor accuracy of shaft and bearing housing, large shaft deflection
▷ Measures:
■ Research on lubricants and lubrication methods
■ Correct bearing selection
■ Research fit, bearing clearance and preload
■ Improved sealing device
■ Check the accuracy of the shaft and bearing housing
■ Improved installation method

Rust
▷ Damage status:
Bearing rust and corrosion include raceway wheels, pit-like rust on the surface of rolling elements, full rust and corrosion.
▷ Reason:
■ Intrusion of water and corrosive substances (lacquer, gas, etc.)
■ Unsuitable lubricant
Water droplets due to condensation of water vapor
■ Stop at high temperature and humidity
■ Poor rust prevention during transportation
■ Unsuitable storage status
■ Improper use
▷ Measures:
■ Improved sealing device
■ Research on lubrication methods
■ Anti-rust measures when stopping
■ Improved storage methods
■ Pay attention when using

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