ZDY (single-stage), ZLY (bipolar), ZSY (three) hardened cylinder gear reducer is a reference to the People's Republic of specific standard ZBJ19004-88 "cylindrical gear reducer" production of products, applied to the input shaft and arranged parallel to the output shaft of the transmission devices. Hardened cylinder gear reducer at its center, the center high transmission ratio are measured using priority number system; gear involute helical gears, its parameters, precise structures were confirmed by computer optimization design; gear materials using high-quality high-strength low- carbon steel, carburizing, quenching treatment has tooth surface hardness, high load capacity, small size, light weight, long life and other characteristics. Gears grinding process, high precision, low noise, smooth operation, high transmission efficiency. Gearbox input shaft does not exceed the maximum speed 1500r/min, gear week maximum speed 20m / s, the working environment temperature -40? C-45? C, when the work environment is less than 0? C, the oil should be before the start heated to +10? C. Gear reducer is widely used in mining, metallurgy, transportation, construction engineering, chemicals, textiles, light industry, energy and other sectors of mechanical transmission. The common model specifications: ZDY, ZLY, ZSY so on. Detailed models please visit the company's official website is the flag: http://www.china-zhengqi.com