Brushed DC Motor: 130-Size, 3V, 20kRPM, 4A Stall
This high-power, 130-size brushed DC motor can be used as a direct replacement for lower-power 130-size motors to get more torque and speed out of your gearmotor, but it will also draw more current and typically wear out faster. It has a recommended operating voltage of 1.5 V to 3 V, but it can operate at higher voltages to provide more power in exchange for longevity of the motor. It is compatible with the larger Pololu plastic gearmotors.
Approximate specifications at 3 V: free-run speed of 20,000 RPM, free-run current of 350 mA, stall current of 4 A, stall torque of 55 gf-cm (0.75 oz-in).
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