Slight running-in wear and matching abrasion of sliding bearing journal during acceleration start-in running-in process are normal wear, but abnormal or severe wear, scratches and fuzz will occur when the bearing has the following faults. Let's take a look!
1. Improper bearing clearance, misalignment of the bearing bush, poor contact of the journal in the bearing bush, unilateral contact or local pressure points on the bearing bush, and the inability of the journal to form a good oil film during operation. These factors can cause rotor vibration and bearing wear . After finding out the cause of the failure, the bearing must be replaced or carefully repaired and reassembled to make it meet the technical requirements.
2. The cylindrical bearing is not round, the size and shape of the oil wedge of the multi-oil wedge bearing are not appropriate, the bearing clearance is too large or too small, the end deflection of the thrust plate of the thrust bearing exceeds the allowable value, and the uneven thickness of the pads makes each of the pads Uneven load distribution, these factors can cause babbitt alloy wear on the bearing surface. A better treatment method is to use the craft shaft to check and repair the irregular shape of the bearing bush.
3. The high amplitude of the rotor due to faults such as unbalance, misalignment, oil film oscillation, fluid excitation, etc. will cause friction, burn, scratches, and fraying of the bearing bush. To this end, we must first eliminate the factors that cause large vibrations and replace worn bearings.
4. The bearing area of the thrust bearing design is too small, the compressor is overpressured, the wheel cover seal, the inter-stage seal or the inter-stage seal is damaged, resulting in excessive axial force, which will wear or melt the tiles.
5. Insufficient or interrupted lubricating oil supply will cause accidents such as friction between the journal and the bearing, melting or even holding the shaft; damage to the air filter of the fuel tank or the filter screen of the oil supply system, the bearing oil is not clean, causing the oil hole to block, Bearing wear; the effect of the oil cooler deteriorates, the oil inlet temperature is high, the oil viscosity decreases, the bearing is deformed, causing rotor vibration, and the bearing is scratched; the oil supply pressure is too low to establish a normal oil film; the lubricating oil carries water and destroys the oil film. Corrosion of journals and bearings. These problems cause bearing damage. For this, the oil cooler must be repaired or enlarged, the filter replaced, and the lubricating oil must be replaced. Pay attention to details when using sliding bearings.
CATEGORIES
Latest news
- Ferrofluid Vacuum Feedthrough Seals us
- Dry Bearing Bush
- Ball transfer unit
- Motorcycle suspension bushing
- Bimetal Flange Bush Bearing
- Selection standard for dimension refer
Contact us
- ADD: No.503,Hunan International Commerce Center, Jintai Square,Changsha 410001,Hunan.
- TEL: +86 731 84770165
- FAX: +86 731 84770163
- E-mail: sales3@slide-bearing.com
> Industry news