Technical data: 1. Frame: single stage 1,2,3,4,5,6,7,8,9,10,11 double stage 31,42,53,63,74,85,95,106,116,117 2. Ratio range: single stage 9,11,17,23,29,35,43,59,71,87 double stage 121,187,289,385,473,595,731,989,1225,1849 3. Input power:0. 12-55 KW 4. Permit torque rang: 70-20000 N.m 5. Structure: Foot-mounted & flange-mounted Characteristic: 1.Several teeth drive, high strength and high credibility 2.The material of main parts is bearing steel 3.Little inertia adapts reducer for forward and reverse operation 4.Low noise high efficiency, single stage efficiency are more than 92% 5.Input and output shaft in the same axis, small volume