Combined needle roller inner ring to inlay standard treatment, the hardness of the shaft is not required; its structure will be more compact.
Widely used in machine tools, metallurgical machinery, textile machinery and printing machinery and other machinery and equipment, and mechanical system design allows more compact smart.
Structure
To the heart of such bearings are full needle roller and thrust ball, or ball thrust, or thrust cylindrical roller, angular contact ball or a combination as a whole, can withstand a one-way or two-way axial load. Can also be designed according to the special structural requirements.
Product Accuracy
Dimensional tolerances and geometric precision by JB/T8877.
Difference in needle diameter 2μm, precision grade G2 level (national standard GB309).
No inner bearing assembly line before the inscribed circle diameter tolerance class F6.
Bearing radial clearance groups meet GB/T4604 specified value of 0.
Special accuracy class according GB/T307.1.
For the bearing clearance, inscribed circle, the accuracy level of details of special requirements should contact us.
Material
Needle material GCr15 bearing steel hardened HRC60-65.
Inside and outside the ring material for GCr15 bearing steel, hardened HRC61-65.
Cage materials for high-quality low-carbon steel or reinforced nylon.
 



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