Bearing damage and remedy
| Home>Bearing knowledge>Bearing damage and remedy |
Bearing damage and remedy
Source: China Bearing Network Time: 2014-10-14
| /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089'; |
Cause: The load is too large. The equipment is poor (non-linear), the torque load is invaded by foreign matter, the water is inflow, the smoothness is poor, the smoothing agent is not suitable for the bearing clearance is not proper. The bearing box accuracy is not good; the rigidity of the bearing housing is not large. The development caused by rust, corrosion spots, abrasions and indentations (representation of appearance deformation).
Measures: Check the size of the load and re-examine the bearing improvement equipment used to improve the sealing equipment, stop the rust prevention, use the smooth viscosity of the appropriate viscosity, improve the smooth method. View the accuracy of the shaft and bearing housing. View the clearance.
Peeling damage condition: showing a dark surface with slight abrasion; there are many small cracks on the dark surface from the outside to the inside with a depth of 5-10m; and a small drop in a large area (small peeling)
Reason: The smoothing agent is not suitable. The foreign matter enters the smoothing agent. The smoothing agent is bad and the appearance is rough. The appearance of the paired rolling parts is not good.
Measure: Select smoothing agent to improve the sealing equipment to improve the appearance of the paired tumbling parts.
Card injury status: The so-called card injury is due to the appearance of some minor burns on the sliding surface injury and the appearance of the external damage. The linear surface of the slide surface and the rolling surface of the rolling surface. The tangential flaw of the roller end surface is close to rolling. The card face of the sub-end face is damaged.
Reason: excessive load, excessive preloading. Smoothness. Foreign matter bite. The outer ring outer ring is skewed, the axis is deflected. The accuracy of the shaft and bearing housing is poor.
Measures: Check the size of the load. Preload should be appropriate. Improve the smoothing agent and smooth method. Check the accuracy of the shaft and bearing housing.
Cracking damage condition: The so-called cracking refers to a slight cracking due to some slanting or excessive load on the rim or roller angle of the raceway wheel.
Reason: The equipment was hit. The load was too large.
Measures: Improve the equipment method (select hot loading; use the appropriate things folder). Correct the load conditions. The bearing equipment is in place; the ribs are supported.
Crack and crack damage: The so-called crack refers to the crack damage of the rolling wheel or the rolling body. If it is used continuously, it will also contain cracks.
Reason: excessive over-interference. Excessive load; impact load. Peeling is carried out. Because of the heat generated by the touch of the raceway wheel and the components of the equipment and the fretting wear. The heat generated by creep. The cone angle of the cone shaft is poor. The cylindricity of the shaft is poor. The corner radius of the shaft step is larger than the bearing chamfer and forms an interference with the chamfer of the bearing.
Measures: The amount of interference is appropriate. Check the load conditions. Improve the equipment method. The shape of the shaft should be appropriate.
Indentation damage condition: biting into a small metal powder; time of foreign matter; dents on the raceway surface or transition surface. Because the equipment is impacted, etc.; concave surface is formed at the distance of the roll body. Hardness indentation).
Cause: Foreign matter such as metal powder bites into. The impact load during assembly or during transportation is too large.
Measures: Impact bushing. Improve sealing equipment. Filter smooth oil. Improve assembly and operation.
Pear-like pitting damage: a weak-gloss dark pear-like pitting on the raceway.
Reason: The foreign body is bitten in the smooth process. Condensation due to moisture in the air. Smoothness is poor.
Measures: Improve the sealing equipment. Filter the smooth oil well. Apply suitable smoothing agent.
Wear damage condition: the so-called wear is due to the conflict to form the raceway surface or the rolling surface; the roller end surface; the collar surface and the concave surface of the bracket are worn.
Cause: Intrusion of foreign matter; development caused by rust and corrosion. Slippery. Slip due to irregular movement of the roll.
Measures: Improve the sealing equipment. Clear the bearing housing. Fully filter the smooth oil. Check the smoothing agent and smooth method. Avoid non-linearity.
Micro-vibration wear damage condition: The wear and tear caused by the relatively repeated fine sliding between the two touch surfaces occurs on the raceway surface and the touch of the roll body. Because of the occurrence of reddish brown and black wear powder; therefore, it is also called fretting wear corrosion.
Reason: poor smoothness. Small amplitude shaking motion. Lack of interference.
Measure: Apply proper smoothing agent. Preload. Check the interference. Apply the smoothing agent to the cooperating surface. False Brinell indentation damage: at the time of the vibration; the touch on the roll and the race wheel is somewhat due to the oscillation. And the formation of the swaying wear has been carried out; the seizure is similar to the impression of Brinell indentation.
Reason: During the transportation process, the bearing oscillates and oscillates when it stops. The amplitude is small and the swing motion is poor.
Measure: Fix the shaft and bearing housing during the transportation process. When transporting, separate the inner and outer rings. Add pre-stress to reduce the oscillation. Use proper smoothing agent.
Creep damage condition: The so-called creep refers to the occurrence of a gap in the cooperation surface of the bearing; in the relative seizure slip between the cooperation faces; the cooperating surface of the creep creep exhibits a specular light or a dark surface; sometimes the page has a card Injury and wear.
Reason: Lack of interference or gap cooperation. The tightening sleeve cannot be tightened.
Measures: Check the interference; perform the rotation stop method. Properly tighten the adapter sleeve. Study the accuracy of the shaft and bearing housing. Axial preload. Fasten the side of the raceway wheel. Bond the cooperation surface. Smooth the cooperation surface. Agent.
Burn injury status: the raceway wheel, the rolling body and the support frame are heated rapidly during the rotation until discoloration, softening, welding and damage.
Reason: poor smoothness. Excessive load (preload is too large). The speed is too large. The clearance is too small. The intrusion of water and foreign matter. The accuracy of the shaft and bearing housing is poor, and the deflection of the shaft is large.
Measures: Study smoothing agent and smooth method. Correct the selection of bearings. Discuss cooperation, bearing clearance and preloading. Improve sealing equipment. Check the accuracy of shaft and bearing housing. Improve equipment method.
Electro-erosion damage: The so-called electric erosion refers to the current in the cyclical weight of the bearing race wheel and the roll of the touch of some movement, through a thin smooth oil film to declare the spark, its appearance shows some ground melting and embossing appearance.
Cause: The potential difference between the outer ring and the inner ring.
Measures: When setting the circuit, the current should not flow through the bearing. Insulate the bearing.
Rusting, corrosion damage: the rust and corrosion of the bearing has the rolling wheel, the crater of the tumbling external surface, all rust and corrosion.
Cause: Intrusion of water, corrosive substances (paint, gas, etc.). Smoothing agent is not suitable. Because of the condensation of water vapor, water droplets are attached. The temperature is stopped when the temperature is high and wet. The transportation process is heavy and rust-proof. The storage condition is not suitable. Not suitable.
Measures: Improve the sealing equipment. Discuss the smooth method. Anti-rust method when stopping. Improve the storage method. Pay attention to the application.
Equipment damage condition: An axial line-like flaw formed on the raceway surface and the rolling surface during operation and disassembly.
Reason: equipment, inner ring, outer ring skewing device when disassembled, impact load when disassembled.
Measure: Use the right thing to use the punching machine to avoid the impact load. The equipment is centered with each other.
Discoloration damage condition: due to temperature rise and smoothing agent reverberation, the raceway wheel and the roll body and the shelf are discolored.
Reason: poor smoothness. The reaction with the smoothing agent forms a hot immersion oil. The temperature rises greatly.
Measures: Improve the smooth approach.
Recommend to friends comments close window
| Bearing related knowledge |
| Composite crusher bearing selection has been carefully studied by the US FAFNIR company bearing code (2) FAG bearing use field and failure cause of low noise bearing device and adjustment of centrifugal pump rolling bearing maintenance and technical standards |
This article links to http://
Please indicate the bearing network http://
Previous: skf imported bearing fault identification skills several methods Next: What is the relationship between the bearing material and function?
Ceiling Exhaust Fan,Big Ceiling Fans,Remote Fan,Crystal Ceiling Fan
JIANGMEN ESCLIGHTING TECHNOLOGY LIMITED , https://www.jmesclightingfan.com