The gear reducer was produced in the guide of PR China standard-ZBJI9004-88. This kind of product includes 3 series; They are ZDY, ZLY, and ZSY. The gear reducer series could be used in metallurgy, mining areas, convey, cement, construction, chemical industry, textile industry, light industry, energy industry. The main function is that reducing the rotary speed, increase the torque. Type: ZDY-single stage, ZLY-double-stage, and ZSY three-stage. Single stage: 80. 100. 125. 160. 200. 250. 280. 315. 355. 400. 450. 500. 560 Double stage: 112. 125. 140. 160. 180. 200. 224. 250. 280. 315. 355. 400. 450. 500. 560. 630. 710 Three stage: 160. 180. 200. 224. 250. 280. 315. 355. 400. 450. 500. 560. 630. 710. Input power: 4-6666kw Output speed: 7.6-1200rpm Hardness of gear surface can be HRC58-62, gear adopts grinding process and precision can be DIN 6.