Wheel bearing: deep groove ball bearing positioning

, large amount of the external factors such as interference of installation does not reach the designated position, temperature rise caused by the expansion, instantaneous overload, etc. , internal factors such as residual austenite and the residual stress in a state of flux and so on all is the main reason for the failure caused by clearance changes. Therefore, for rolling mill bearing lubrication maintenance is crucial, bearing dust cover material bearing standard of dust cover material is steel plate, cold rolled galvanized tin ASI - sometimes use Specifications of the stainless steel. How to diagnosis of rolling bearing is damaged and can continue to use, rolling bearing assembly of rolling bearing assembly correctly, there are mainly two key problems, is bearing cleaning method, is bearing installation method. The removal of large size tapered shaft need remove the oil hole, after completion of all driving can lift the bearing, then remove the hinge axis at the ends of the ring, bearing dismantled. Much easier to install bearing, can directly use press reset, replaced the shock absorber and claw bearing it, at the moment can bloom again. In daily repair machinery can use all kinds of grease, have sodium, calcium, lithium, barium and aluminum grease, etc. , to guarantee normal operation of all moving parts of equipment. Repair welding of machining process need to remove for shaft as a whole, return through heavy machinery and transport equipment manufacturer for repair, so that the overall need to cycle around for days, or even longer. If under axial load is too big, can cause steel ball and the inner and outer rim edge contact or between rim and raceway contact ellipse is truncated, this time will generate stress concentration, bearing ring is worn, thus affecting precision. The thread damage on the shaft, should undertake surfacing, threading, spline slotting fix high-speed bearings and plain bearing: the difference between high speed bearing is higher than the accuracy of the vulgar bearing, the surface roughness is smaller. Today, xin feng small make up on the Internet to find some, and daily maintenance of centrifugal fan under the information sharing: centrifugal fan impeller maintenance: at the beginning of the centrifugal fan impeller and all regular check, as long as there is an opportunity, must check whether the impeller appear flaw, wear, dust and other defects. The sliding bearing material with the commonly used bearing alloy ( Also called babbit or white metal) , wear resistant cast iron, copper and aluminum alloy, powder metallurgy material, plastic, rubber, hardwood and carbon - Graphite, polyvinyl fluoride ( PTFE） , modified polyformaldehyde ( POM） , etc. Check the replacement bearing such as found serious fatigue spalling, not in time of oxidation corrosion, wear pit, crack, reduced to HRC& hardness; lt; Or have too much noise can't adjust, should be replaced in a timely manner.