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1.Any part of the agricultural gearbox shall not have cracks, holes and other mechanical damage and casting defects.
2.The processing surface of agricultural machinery transmission box should be kept clean, the shaft surface finish is not less than 76.
3.The ellipticity of each shaft hole in the agricultural machinery gearbox is not greater than 0.015 ~ 0.02 mm.
4.The centerline unevenness of each shaft hole is not more than 0.04 mm on the length of 100 mm.
5.the distance between the shafts of the agricultural machinery gearbox.
6.The relationship between bearing hole and bearing housing of agricultural gearbox.