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Since the implementation of GB 11365-89 precision, other standards related to bevel gears, such as modulus and strength calculation, have also been promulgated. The new standard applies to straight, helical, curved bevel gears and hypoid gears. Where the point normal modulus (?) ≥ 1mm, but when (?) 55mm, midpoint index circle diameter d_ (?) 4000mm, can be processed according to Appendix A. The new standard specifies sports essence
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