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When a thrust ball bearing serious overheating the workpiece when the grain is thick and 8 cable volume increases in steel, easily lead to workpiece hot workability deteriorated. Stainless steel with the body or flanges when there is a hot, easy to produce orange peel surface defects. Overheating large organizations parts can be modified by using grain refinement methods of elimination of defects of forging, prevent orange peel when cold deformation of workpiece surface defects, to improve the surface quality of the workpiece.
Can check motor thrust ball bearing, is motor thrust ball bearing tour gap insufficient (tie select errors), to make within ring side too expansion, caused thrust ball bearing overheating; thrust ball bearing internal had tight, tight will set Shang have had tight, also will caused thrust ball bearing overheating; sealed installed errors, friction to still parts; pre-load thrust ball bearing on loaded, also will caused overheating; r axis not straight or be away on official business ring also will caused overheating; axis size had large or axis box hole size too small, also will caused overheating.
Considered if the thrust ball bearings with one end fixed, floating installation at one end, to eliminate an additional axial load, in accordance with the thrust ball bearing analysis and calculation of pure radial load for. The fact that, when the fan spindle axial dimensions due to temperature change of telescopic or other reasons to impose a thrust ball bearing axial load only when the load reaches a certain value, swim swim end thrust ball bearing can only occur, so loading does not continue to increase. In other words can′t swim thrust force ball bearing′s axial loads completely eliminate. Though not as this number (the size of a thrust ball bearing and a thrust ball bearing base alignment), for some kind of thrust ball bearings are negligible. But for double row spherical roller and thrust ball bearings double row ball thrust ball bearings, lubrication conditions and the speed does not equal due to load, so that its two rows of rolling load does not have. A column containing a large rolling element and the Raceway contact stresses increase, increases the effect of friction, the thrust ball bearing in operation the heat generated increases.
Exists also the side of axial loaded rolling elements of the increase in the number of rolling elements and Raceway increased number of points of friction, and also increases the thrust ball bearing in operation the heat generated. Mainly because of these two reasons, the thrust force ball bearing′s temperature is too high. In this case if you want to make the thrust force ball bearing′s temperature rise within the prescribed limits, must try to improve or reduce the speed of the thrust ball bearing lubrication conditions.
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