This 130-size brushed DC motor has a recommended operation voltage of 3 – 12 V and is used in the larger Pololu plastic gearmotors. Approximate specifications at 6 V: free-run speed of 11,500 RPM, free-run current of 70 mA, and stall current of 800 mA.
Motors
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Brushed DC Motor, 130-Size, 6V, 11.5kRPM, 800mA Stall - Proto-PIC
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228:1 Plastic Gearmotor, Offset Output - Robot Gear Australia