Auxiliary rollers, the outer diameter of the secondary sleeve shaft diameter should be smaller than 0.1-0.3mm. When installed, the first bearing outer ring surface coated with grease, surface mount try to be put in the needle (needle into the last one should be a gap), then put in place of the journal or bearing inner auxiliary roller or auxiliary push the outer sleeve hole and make the end face of the shaft surface alignment install or have installed on the end face of the shaft bearing inner ring, and then press or hand hammer pressure. For no inner or outer ring without needle roller bearings, rolling surface when installing RNAV4006 needle roller bearings, shaft or housing bore can be first coated with a thin layer of grease and turn the needle close to the installation site Grease on. Needle placement should be the last one there is a gap, the gap size on the circumference of the needle bearings 0.5mm appropriate. Finally, a needle can not be loaded into a hard squeeze, or less loaded RANV4007 a needle roller bearings, mounted as a hard squeeze, bearing will be stuck not rotate; when less loaded, the gap is too large, easily lead to bearing operation Wiggler and occur when the needle to break. For only drawn cup needle roller bearings, as the outer walls were very thin needle bearing 4,084,107, do not hand hammer installation of needle roller bearings, use push presses. Because the hand hammer, uneven pressure, needle roller bearing outer ring easily produce local deformation. 4084107 needle roller bearings Needle roller bearings _ _ Needle by LINQing municipal governance and needle roller bearings plant. Linqing municipal and needle roller bearings plant (www.zhgzzc.com) strong, credible, in other industries, Liaocheng accumulated a large number of loyal customers. The company better work attitude and constantly improve governance and innovative ideas will lead you hand needle and into the brilliant, for a better future!