Feature:1. High Torsion, Low Noise: 36mm good quality steel pipe electricity, possess small size, low noise, high torsion and long life2. Ball Bearing Design: Gear motor adopt ball bearing design, enhances shaft friction resistance, very practical3. Multi Function: Built in sensory drive function, free switching function of CW and CCW, wire control brake function, pulse width PWM speed control function, FG signal speed measurement function4. Over Current, Voltage and Temperature Protection: Over current protection function for 3A, over voltage protection function for 30V, over temperature protection function for 805. Automatic Start Function: Electric gearbox motor come with locked rotor protection, and automatic start functionSpecification:Item Type: Gear MotorMaterial: Zinc alloy, copper, steelUses: IndustrialShaft Length: Approx. 15mm / 0.6inShaft Diameter: Approx. 8mm / 0.3in(D shaped shaft)Gear Box Size(length x width): Approx. 58 x 40mm / 2.3 x 1.6inMotor Diameter: Approx. 36mm / 1.4inCable Length: Approx. 280mm / 11inOperating Voltage: DC 12VReduction ratio (change ratio)173150100200290500No load speed(rpm)235130804020148Rated torsion(Kg.cm)2.54.57.330291060Rated speed(rpm)180100603015106Maximum torsion(Kg.cm)4.3812.525517070.Package List:1 x Gear MotorNote:The maximum bearing capacity of the gear is 70KG, it is forbidden to block up, which is easy to burn the motor if it is blocked for a long time.