Product features: 1. High load capacity: carbonization, quenching, and grounding processed. 2. Small size, light weight: compared with soft tooth face and medium hard tooth face reducer, QY series of same capacity are much lighter. 3. High efficiency, low noise, and low vibration: grounding improves precision. Tip relief enhances its overall efficiency and reduces noise and vibration. 4. Multiple driving stage: widen the center distance, decrease unit height, this meets the requirements of crane structure. 5. Convenient mounting: three-point type reducer convenient mounting type: horizontal, vertical and even of some angle. 6. both CW and CCW rotary direction. Main technical parameters 1. Maximum circumferential velocity: 20m/s 2. Maximum spindle speed: 1500r/min 3. Maximum transmission ratio: 400