What are the most afraid of sliding bearings?
The speed is too high, the shaft finish is not good, the hardness of the grinding shaft is not enough, lubrication, temperature, impurities and so on.Oil free self-lubricating bearings and solid lubrication bearings are produced by Jiaxing Solid Bearing Co., Ltd. and do not need oiling.
Main faultSliding bearing at work due to shaft and bearing contact friction, causing the surface heat, wear even "killed", so in the design of bearings, should choose good antifriction bearing sliding bearing materials, suitable lubricant and the supply of the appropriate method to improve the bearing structure for thick film lubrication etc..1, tile surface corrosion: spectral analysis found that non-ferrous metal concentration is abnormal; there are many non-ferrous metals in the spectrum of sub micron wear particles; lubricating oil moisture exceeded acid value exceeded.2, the surface of the journal corrosion: spectral analysis found that iron concentration is abnormal, there are many iron components in the iron spectrum of submicron particles, lubricating oil moisture exceeded or acid value exceeded.3, the axle neck surface strain: iron spectrum in the iron cutting abrasive particles or black oxide particles, the metal surface has the tempering color.4. The fretting wear of the back of the tile: the spectral analysis shows that the iron concentration is abnormal. There are many ferrous components, submicron wear particles in the iron spectrum, and the water and acid value of lubricating oil is abnormal.5, bearing surface strain: iron spectrum found in the cutting abrasive particles, abrasive particles for non-ferrous metal.6, tile surface spalling: iron spectrum found in many large size fatigue spalling alloy, wear particles, layered abrasive particles.7, bearing burning tile: iron spectrum, there are more large size alloy abrasive particles and ferrous metal oxides.8, bearing wear: as a result of the metal characteristics of the shaft (hardness, poor yield) and other reasons, easy to create adhesive wear, abrasive wear, fatigue wear, fretting wear and other conditions.
Sliding bearings are surface contact, so between the contact surface to maintain a certain oil film, so the design should pay attention to the following problems:1, it is necessary to smooth the oil film into the friction surface.2, oil should be from the non load area into the bearing.3, do not make the whole ring oil tank in the middle of the bearing.4, such as oil tile, joint opening oil groove.5. Make the oil ring fully and reliably supplied to the oil.6, the filling hole not blocked.7, do not form an oil free flow zone.8, to prevent cutting off the sharp edges and edges of the film.
