Feature: 1. Smooth Operation And Low Noise: Adopt high accuracy shaft, copper coupling, multiple accurate machining, through rigorous dynamic and static balance test, which can ensure smooth operation and low noise 2. Large Torsion: Using high strength magnetic tile, possess long life, strong power, large torsion 3. Reduce Weight And Save Space: Fully enclosed structure with small size, which can effectively reduce weight and save space 4. Low Loss And Long Life: Copper winding bring low resistance, quiet and durable, low heat generation, small size, low loss, long life, and powerful operation balance 5. Make Balance Car, DIY Smart Car: Encoder motor set can be used to make balance car, DIY smart car, very practical Specification: Item Type: Encoder Motor Set Model: JGB37-520 Material: Brass, copper, magnetic tile Purpose: Balance car, DIY smart car Operating Voltage: DC 6V Shaft Diameter: Approx. 6mm / 0.2in(D shaft) Shaft Length: Approx. 15.5mm / 0.6in Positive and Negative: Support Reduction ratio (change ratio) 6.3 10 19 30 56 90 131 168 270 506 No load current mA ≤70 ≤70 ≤70 ≤70 ≤70 ≤70 ≤70 ≤70 ≤70 ≤70 No load speed rpm 1000 600 300 200 100 70 45 35 20 12 Rated torsion Kg.cm 0.4 0.5 1.1 1.7 3.2 5 7.5 9.5 15 28 Rated speed rpm 800 500 265 166 90 55 38 30 18 10 Rated current A ≤0.45 ≤0.45 ≤0.45 ≤0.45 ≤0.45 ≤0.45 ≤0.45 ≤0.45 ≤0.45 ≤0.45 Maximum torsion 0.5 0.8 1.6 2.5 4.5 7.5 12 15 24 Maximum withstand 35KG Stop current A 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 Blocking is not allowed L length(approx.) 19 22 24 26.5 29 . Package List: 1 x Motor1 x Wheel1 x Bracket1 x Connection Line1 x Coupling1 x Hex Wrench7 x Screw2 x Hex Socket Screw