Feature: 1. This planetary gear motor is made from quality steel, which is sturdy and durable for long service life. 2. The structure is relatively compact, the accuracy is high, the service life is very long, and the rated output torsion can be made very large. 3. Convert the input low torsion and high speed through the gear set into high torsion and low speed output. 4. With more than 3 planetary gear, providing larger total torsion and smoother speed transmission during speed change. 5. Suit for projects such as robotics,rc car model,custom servo, and 3D printers, DIY engine toy. Specification: Item Type: Planetary Gear Motor Material: Steel Model: 5202-0002-0019 Motor: RS-555 Motor Motor Type: Brushed Dc Nominal Voltage: 12VDC Output Shaft: 6mm D Gear Ratio: 19.2:1 Gear Ratio Equation: (((1+(46/17))) x (1+(46/11))):1 Gear Material Housing: Steel Ring Gear The First Stage: Steel Gears, Acetal Orbital Gears The Second Stage: Steel Sun Gear, Steel Orbital Gear No-load Speed: 12VDC 312 RPM No-load Current: 12VDC 0.25A Locked-rotor Current: 12VDC 9.2A Stall torsion: 12VDC 24.3 Kg.cm (338 oz-in) Cable Length: 470mm (including Connector) Wire Gauge: 16AWG Motor Connector Type: 4-pin Female Jst Encoder, Anderson Powerpoles Encoder Voltage: 3.3/5V Dc Encoder Type: Hall Effect Countable Events Per Revolution: 1440 Purpose: Convert the Input Low torsion and High Speed into High torsion and Low Speed Output Through the Gear Set. Package List: 1 x Planetary Gear Motor Note: Decrease speed and increase output torsion at the same time. The torsion output ratio is based on the motor output multiplied by the reduction ratio, but be careful not to exceed the rated torsion of the reducer.