KEYESTUDIO DC Geared Motor DC Motor Wheel Kit Electric for Arduino Robot 4.5V DC Uniaxial Gear Motor with Plastic Tire Robot Wheels DIY.

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This Mini Electric Motor is a general purpose motor work with batteries or solar cells perfectly

Operating voltage: 3V~12V DC (recommended operating voltage of about 6 to 8V)

Noload speed: 1:48; RPM:200(when it is 4.5V); Load current: 170mA (when it is 4.5V)

Maximum torque: 800gf cm min (when it is 3V)

Car wheel Size: 69mm(outer diameter) 26mm(thickness) 46mm(inter diameter)