12JS all synchromesh gearbox < / b > structure characteristics of < br / > the main and auxiliary box combined design, with a front side box, manual control box, before and after vice box manipulation. < br / > main and auxiliary box adopts circular arc tooth root, quasi involute gear design, according to the scientific data for the design of the K - diagram control gear accuracy, gear shot peening treatment, improve the bearing capacity.
short axial size, light weight, large carrying capacity, reliable use, convenient maintenance.