Built in Electric Motor DIL-22C. Specifications: - Rotation Speed: 2000-40000r/min. - Torque: 3.0 N.cm. - Voltage: DC24V-36V. - Motor Size: Diameter 22 mm, Length 74 mm. - Weight: 77 Kg. - Noise: <60dB. - Light: LED (White). - Control System Size: 148 x 80 x 17 mm.