NK07/10 needle roller bearing

Product introduction needle roller bearing is a cylindrical roller of roller bearings, relative to its diameter, roller is thin and long. This is called needle roller. Although has a small cross-section, bearing still has high load capacity, needle roller bearing with thin and long ( Roller diameter D 5 mm or less, the L/D 2 or more. 5, L for roller length) , so the radial structure is compact, its inner diameter size and load capacity at the same time, with other types of bearing outside diameter is small, especially suitable for radial installation size limit of the supporting structure. According to the use of different occasions, can be used without inner ring of the bearing or needle roller and cage components, at this time to suit the bearing surface of the surface of the shaft and the shell hole directly as inner and outer rolling bearing surface, in order to ensure the load capacity and operation performance and you have the same ring bearing, axis or shell hole hardness on the surface of the raceway, machining accuracy and surface quality should be as a bearing ring raceway. These bearings can bear radial load only. Product characteristics of needle bearing with fine and long roller ( Roller diameter D 5 mm or less, the L/D 2 or more. 5, L for roller length) , so the radial structure is compact, its inner diameter size and load capacity at the same time, with other types of bearing outside diameter is small, especially suitable for radial size by a limited amount of supporting result. According to the use of different occasions, can be used without inner ring of the bearing or needle roller and cage components, at this time to suit the bearing surface of the surface of the shaft and the shell hole directly as inner and outer rolling bearing surface, in order to ensure the load capacity and operation performance and you have the same ring bearing, axis or shell hole hardness on the surface of the raceway, machining accuracy and surface quality should be as a bearing ring raceway. These bearings can bear radial load only. Product installation install full needle roller bearings, usually using auxiliary sleeve. At this time, the auxiliary roller or auxiliary sleeve hold needle don't fell out of the needle, journal with its own chamfering needle lift, as the needle roller bearing on the shaft neck slowly moving into, the auxiliary roller or auxiliary sleeve out slowly, until outfit to the job position. Auxiliary roller, the outer diameter of auxiliary sleeve should be smaller than shaft diameter 0. 1-0. 3mm。 When installation, the surface coated with grease inside the bearing outer ring first, rely on tight inside put needle roller surface, then replace the shaft neck of the roller bearing inner ring or auxiliary sleeve into the outer ring hole, and make it face alignment installed shaft end face or installed on the shaft bearing inner ring end face, and then use pressure on the press or hammer knock. Needle roller bearing and it can be installed, apply a thin layer of lubricating oil, the auxiliary sleeve diameter set into the bearing outer ring and the auxiliary sleeve and bearing outer ring form a circular hole, and then install needle in the annular aperture. After loading the needle, work with axial auxiliary sleeve will launch. For without inner ring or outer ring needle roller bearing, when installation, can be the first shaft hole or shell rolling surface coated with a thin layer of grease, and combine needle in close to on the installation position of grease. At the end of the stick put root needle should be gaps, the size of the gap in the needle roller bearing on the circumference of a circle to 0. It is advisable to 5 mm. Can't put the root at the end of the needle hard to squeeze into, or less a needle, because hard packed, bearing will be stuck can't rotate; Short-ship, clearance is too large, easy to cause bearing needle roller twist and break during operation. For only the stamping outer ring needle roller bearing, due to the outer wall is thin, don't use hammer knock installation, press pressure should be used. Because when hammer knock, uneven pressure, easy to produce local deformation make needle roller bearing outer ring. Considerations for needle roller bearing bearing capacity big, suitable for installation by the limit of the supporting structure size, shaft neck as rolling surface hardening on the surface, bearing with force fit into the hole, not for axial positioning. Bearing before installation should be injected into the right amount of grease, under normal circumstances, after the assembly no longer BK type bearing lubrication for shaft neck without out of the bearing, encloses the seal effect, and can withstand the small axial winding. Needle roller bearing advantages and usability needle bearing with fine and long roller ( For 3 ~ 10 times the diameter of the roller length, diameter, generally no more than 5 mm) , so the radial structure is compact, its inner diameter size and load capacity at the same time, with other types of bearing outside diameter is small, especially suitable for radial installation size limit of the supporting structure. Needle roller bearing according to the use of different occasions, the machining accuracy and surface quality should be combined with bearing ring, use. Needle roller bearing is a centripetal needle bearing and thrust bearing parts of the bearing unit.