Features:Planetary gear speed reducers from SR are compact and light, comparing with shaft-fixed driving cylindrical gear reducers with hard tooth surfaces, the weight is 1/2-1/3 lower and volume is 1/2-1/3 less. It is of high driving efficiency, bearing capacity and driving power. The outline shapes are varied, and they will run steadily and at low niuse. It employs high-quality Alloy steel that is hardened and nitrided, so it is of better performance. Equipment methid: Foot installment,flange installment Big power can equipped to complete the capacity of heavy bearing Technique parameters: Ratio: 1.single-stage 4-18 2.doule-stage 20-125 3.three-stage 112-1250