Needle roller bearings

Because small roller diameter of Needle bearing stiffness than the tapered roller bearing is much better, and double row bearings developed by misplaced needle bearings so that it can be used with rigid copper sleeve bearing comparable. Compared with conventional needle roller bearings, should Needle roller support group for printer needle bearing higher than the average. Conventional needle roller bearings to 2μm packet as a unit, while the needle grouping printer used to 1μm as a unit. Thus, by selecting the appropriate needle points .Group, it can make the bearing operating clearance is less than 1μm, such is the quality of the printer running accuracy required. And the printer can use the needle packet needle bearing packet than normal group more so for the wall of the processing requirements can be reduced naturally.