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Gear Motors

Gear Motors

Gear motor refers to a combination of a motor plus a reduction geartrain. These are often conveniently packaged together in one unit. The gear reduction (gear train) reduces the speed of the motor, with a corresponding increase in torque. Gear ratios range from just a few (e.g. 3) to huge (e.g. 500). A small ratio can be accomplished with a single gear pair, while a large ratio requires a series of gear reduction steps and thus more gears. There are a lot of different kinds of gear reduction.

In the case of a small transmission ratio N, the unit may be backdrivable, meaning you can turn the output shaft, perhaps by hand, at angular velocity w and cause the motor to rotate at angular velocity Nw. A larger transmission ratio N may make the unit non-backdrivable. Each has advantages for different circumstances. Backdrivability depends not just on N, but on many other factors.

For large N, often the maximum output torque is limited by the strength of the final gears, rather than by N times the motor's torque.

  • 16mm Metal Gearmotors - ThinkRobotics.in
    16mm Metal Gearmotors - ThinkRobotics.in
    Sale
    from ₹ 395.00

    16mm Metal DC Gear Motor

    These cylindrical brushed DC gearmotors are available in a wide range of gear ratios and 6V & 0.04A with long-life carbon brushes (CB). All ge...

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    from ₹ 395.00
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  • 25mm Metal Gearmotors - ThinkRobotics.in
    25mm Metal Gearmotors - ThinkRobotics.in
    Save 77%
    ₹ 2,390.00
    ₹ 545.00

    25mm Metal Gear DC Motors

    These cylindrical brushed DC gearmotors are available in a wide range of gear ratios and with five different motors (two power levels of 6V motors ...

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    ₹ 2,390.00
    ₹ 545.00
    Save 77%
  • 37mm Metal Gearmotors - ThinkRobotics.in
    37mm Metal Gearmotors - ThinkRobotics.in
    Save 75%
    ₹ 2,780.00
    ₹ 695.00

    37mm Metal DC Gear Motor

    Measuring 37 mm (1.46″) in diameter, these brushed DC gearmotors are the largest and most powerful we carry. They are available in a range of gear ...

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    ₹ 2,780.00
    ₹ 695.00
    Save 75%
  • N20 - 12mm - 6V/12V DC - Reduction Geared Motors - ThinkRobotics.in
    N20 - 12mm - 6V/12V DC - Reduction Geared Motors - ThinkRobotics.in
    Sale
    from ₹ 295.00

    12mm N20 6V/12V Geared DC Motors

    With a cross section measuring only 10 × 12 mm (0.39″ × 0.47″), these small brushed DC gearmotors are available in a wide range of gear ratios—from...

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    from ₹ 295.00
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  • Save 78%
    ₹ 1,595.00
    ₹ 345.00

    20mm Metal DC Gear Motors

    These cylindrical brushed DC gearmotors are available in a wide range of gear ratios and 12V with long-life carbon brushes (CB). All geramotors ha...

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    ₹ 1,595.00
    ₹ 345.00
    Save 78%
  • Mini Smart Car Gearmotor - ThinkRobotics.in
    Mini Smart Car Gearmotor - ThinkRobotics.in
    Save 59%
    ₹ 230.00
    ₹ 95.00

    Mini Smart Car Gear DC Motor

    These brushed DC gearmotors are compact and affordable — perfect for building a quick, miniature robot. They are intended for use at 4.5 V, though ...

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    ₹ 230.00
    ₹ 95.00
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  • Mini Smart Car Gear Motor Wheel Set - ThinkRobotics.in
    Mini Smart Car Gear Motor Wheel Set - ThinkRobotics.in
    Save 73%
    ₹ 540.00
    ₹ 145.00

    Mini Smart Car Gear Motor Wheel Set

    These brushed DC gearmotors are compact and affordable — perfect for building a quick, miniature robot. They are intended for use at 4.5 V, though ...

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    ₹ 540.00
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