Hub motor HM5001 has changeable and customizable appearance scheme, light and low noise environmental protection design. The default 48V battery is designed and matched to provide super strong torque output. Its maximum rotated speed can reach 360 RPM, and the rated power is 500W (it supports to enlarge to 750W), this brings you a relaxing and pleasant riding experience . The high-grade waterproof design allows you to smooth and have comfortable feeling in harsh environments. At the same time, it can be equipped with 20"/26:-inch tires,to make your vehicle more selctive. This makes more choices when assembling. This hum motor can match with Wuxing Star-Union own design controller, display, throttle, brake lever (including hydraulic brake), switch and other components to make the full set for One-stop solution. Certificate approval: CE/ROHS. Motor hub specifications:20"/26"inches. Rated voltage:48V. Waterproof level: IP65. Rated output: 500W. No-Load speed: 400/306RPM. Rated speed:350/270 RPM. Maximum torque: 80N.M. Gear ratio:5:1.Weught:<4.6kgs Noise: <55dB. Brake: Disc Brake.Note: operated by professional after-sales technicians! When the motor does not rotate: Ask professional after-sales technicians to disassemble and returntothefactoryfor repairwithinthewarrantyperiod; In case of abnormal noise of motor: Ask professional after-sales technicians to disassemble and observe whether the gear is damaged. If there is any damage, please return to the factory for repair within the warranty period; When the motor is abnormally hot: Ask professional after-sales technicians to disassemble and observe whether it is caused by inter turn short circuit. If there is short circuit, please return to the factory for repair within the warranty period.Before each ride, check whether the front and rear wheel fixing nuts are loose. If there is any fault in this product, please contact after-sales serviceandaskprofessionalmaintenancepersonneltorepair. Do not use a high-pressure water gun.Inuse: In case of abnormal sound, peculiar smell, high temperature, etc., please stop using immediately and turn off the power switchquickly; Do not put hands and feetinto the front and rear wheel spokes inoperation; Donotsoakthewholemachineinwater.