Too large an interference fit due to the size of the shaft and the bearing hole measurement inaccuracies or the roughness of the mating surfaces do not meet the standard requirements, so that the plastic slide bearing ring severely extruded, so as to cause the radial clearance of the bearing itself reduce, so that rotation of the bearing difficulties, fever, increased wear and tear, or stuck, severe cracking installation will cause the bearing inner and outer races. The seat does not rotate often gaps or small with interference, so that does not rotate the seat is likely to produce tiny crawling, leaving the seat with the contact surface of the rolling element replacement seat raceway wear uniform. Also can eliminate the shaft due to thermal elongation leaving the rolling bodies bearing axial jammed. But too large a gap with the seat, will not rotate together with the rolling bodies rotate, to severe wear resulting shaft (or bearing holes) with the inner race (or outer ring), and the emergence of the bearing friction heat, vibration.
1, plastic sliding bearing surface strain: Ferrography in cutting abrasive, abrasive ingredients for non-ferrous metals.
2 plastic sliding bearing journal surface corrosion: spectra showed abnormal concentration of iron, iron spectrum the many iron components submicron particles, lubricants excessive moisture or acid value exceeded.
3, plastic sliding bearings watts surface corrosion: spectra showed abnormal concentration of non-ferrous metal elements; iron spectrum submicron wear particles of many non-ferrous metal components; lubricants excessive moisture, acid value exceeded.
4 plastic plain bearings tile back fretting wear: spectra of the abnormal iron concentration, iron spectrum, many iron content in the sub-micron wear particles, lubricants abnormal moisture and acid value.
Liquid lubrication conditions, the sliding surface lubricants separate without direct contact, can also greatly reduce friction loss and surface wear, the film also has a certain vibration absorption capacity
5 plastic sliding bearing journal surface strain: Ferrography, the cutting abrasive or black iron-based oxide particles, metal surface tempering color.
6, the superfinishing plastic plain bearings to produce metamorphic layer and easy to wear spikes, but also to get rid grinding left metamorphic layer. Working life increased by about 5 times.
7, plastic plain bearings grinding after finishing the workpiece, the general assembly can reduce operating noise 8 ~ 10dB, and little vibration. Smooth operation.
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