Rated Output Power: 500W Rated Voltage: 36/48/60V DC Rated Speed: 2800 RPM No-Load Speed: 3100 RPM Rated Current: ≤17.8/13.4/10.8A No-Load Current: ≤4.5/4.0/3.3A Rated torque: 1.7 N·m Efficiency: ≥75% Reduction ratio: 1:6