_ Precision Gear gear reducer precision gear manufacturer refers to the shape of the gear integrated error divided one level, including tooth, Tooth, jump trails and some important parameters, which refers to the radial shape of the tooth is teeth , refers to the longitudinal shape of teeth to the teeth, diameter jump distance is defined as the error of two adjacent teeth, generally we automotive gear hobbing processing is completed by 6 to 7 can be used, and some of the press due to the need for high-speed operation and batch printing, it requires high-precision gears in order to reduce the accumulated gear error leaving the printing effects caused by decline, while domestic production of grinding can be processed to level 4-5, imported high-precision grinding machine to be processed 3, - 4, and some can be processed to two. The Japanese standard DIN 0 Grade 4 Grade equivalent Chinese judge, usually in units of error in μm, 1μm = 0.001mm diameter calculation tip diameter = (number of teeth + 2ha *) * modulus pitch diameter = number of teeth * mold Number of root diameter = (number of teeth -2ha * -2 * hc *) * modulus for standard gear: ha * = 1, hc * = 0.25; the other to take such other non-standard gear: M4, 32 tooth tip diameter = (32 + 2 * 1) * 4 = 136mm pitch diameter = 32 * 4 = 128mm root diameter = (32-2 * 1-2 * 0.25) * 4 = 118mm this calculation method for all mold Number of gears (not including displacement gear). Modulus indicates the size of the gear teeth. Gear modulus = pitch diameter gear teeth modulus ÷ choose gear modulus national standards GB1357-78. Manufacturers of home, you can build all kinds of models, cheap, large concessions. Sincerely we look forward to working with you! Shenzhen OECD gear Machinery Co., gear reducer precision gear manufacturer _