Although the application of cross wedge rolling (CWR) in the aspect of rough gear shaft formation has enlarged,there is still no standard for rough gear shaft at home and abroad,which leads to a series of difficulties to the component design, production, transaction and especially the deals with foreign companies. Now, some related aspects about gear shaft, including the chosen materials, internal quality demand, working allowance, tolerance selection, dimensional accuracy, delivery and so forth were normalized by the national machinery industry standard “Specification of gearshaft blank produced by cross wedge rolling”, which provides theory basis for production of CWR, and fills the blank of the standardization of CWR of rough gear shaft at home and abroad.
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