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Combined Needle Roller Bearings Precision Products
Feb 25, 2016

JB/T8877 dimension tolerances and geometrical precision.

Roller diameter difference of 2 µ m, precision grade G2 (GB GB309).

Bearings without inner ring inscribed circle diameter tolerance F6 before Assembly.

Bearing radial clearance in accordance with GB/T4604 of 0-group ratings.

Special grade GB/T307.1.


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