Radial Needle Roller and Cage Assemblies - Changzhou YangFan Bearing Co.,ltd

The radial needle roller and cage assembly is a self-retaining rolling unit. The long space between two guidance face is easy for both guiding the needle roller accurately and choose reasonable position. The type is recommened to use when the shaft and housing bores are as raceway. The needle roller and cage assemblies provide rolling bearing arrangements with high accuracy within low radial section height.

1. 结构形式 /Structure Design

also manufactures split cage assemblies and inch system cage assemblies, such as WJ

2.The main type of cage are series M and series K. The cage is made of high quality carbon steel or low carbon alloy steel (15CrMo, 20CrMo) or plastic (nylon). After the cage is through and anti-friction Properties. The temperature of plastic cage should be 120 ℃ . The temperature 180 ℃ is allowable on condition that it is short time operating.

3. 滚针分组，在同一套组件中的滚针，其平均直径的上下偏差为 2-3μm 。

3 . The needle rollers are sorted according to the deviation from the nominal diameter. The maximum diameter tolerance is 2~3μm.

4.轴和外壳座孔与组件配合处的技术要求 /Shaft and Housing Bore's Requiremerts

When the needle roller and cage assemblies are operated between axis and shell, the radial clearance is determined by the tolerance of axis and shell's raceway shaft and the housing bore must be designed as rolling bearing raceway. If the dimension of housing bore is G6, the shaft's tolerance is recommended as Table 2.

表 2 轴的公称尺寸 /Table 2 Mounting Tolerance

In order to the radial needle roller bearing and cage assembly meet with the load capacity, the hardness of raceway should not less than 58~64HRC, the depth of hardened surface should be 0.6~1mm and roughness(Ra) mustn't over 0.2μm.