7.57 - 재봉틀을 위한 433.2kN 토크 나선형인 산업적 기어박스

7.57 - 433.2kN Torque Helical Industrial Gearbox For Sewing Machine 1. Product Characteristics A. The gear and gear shaft employs high-strength low-carbon alloy steel, with manufacturing method of gear hobbing, the thermal treatment of carburising & quenching, as well as gear grinding, the hardness of gear flank can be HRC58-62, which is high precision and good contact; B. Compact, light weight, durable lifetime, large carrying capacity; C. High transmission efficiency,