Item Type: Electric Motor Gear Box_x000D_Material: ABS, alloy, copper_x000D_Purpose: Motor gear box for children's cars_x000D_Working Voltage: 12V_x000D_Colour: White_x000D_Motor Speed: 6600RPM_x000D_Hole Diameter: Approx. 11mm / 0.4in_x000D_Total Length x Width: Approx. 140 x 80mm / 5.5 x 3.1in_x000D_Motor Diameter: Approx. 28mm / 1.1in_x000D_How to Use: _x000D_1. Easy to install, pay attention to the lubrication of the gear box to prolong the service life._x000D_2. After the gear box is installed, it should be flexibly rotated manually without jamming, and the contact spots on the tooth surface should meet the requirements of technical conditions._x000D_3. According to the requirements of the manual, add the specified oil to reach the oil mark scale, and run it without load before formal use. At this time, the gear box can be driven by the motor. After inspection, the gear box runs smoothly, without shock vibration and abnormal noise, and is lubricated. Only when the condition is good and the sealing and joint surfaces do not leakage oil can it be put into trial operation together with the unit. 1The middle gear is a metal gear, and the motor is thickened copper wire, so that coexist power and speed 2Possess stable working, gears are more wear?resistant and can be used for a long time 3The product come with easy installation, strong interchangeability, very practical and convenient 4Adopt ABS and alloy material, possess impact resistance, suitable for motor gear box of children's cars 5Working voltage is 12V, motor speed for 6600RPM, come with high working efficiency1 x Electric Motor Gear Box