Many robotics projects require a precise ratio of RPM-Torque which a standard motor can't provide, you need a motor with a metal gearbox.

Micro

Micro metal gear motors are the teeniest size of metal gear motors that we carry, and are ideal for smaller robots, or applications requiring less power.

  1. 75:1 Micro Metal Gearmotor HP
    SKU: POLOLU-2361 Brand: Pololu Guides (1)
    This gearmotor is a miniature (0.94" x 0.39" x 0.47"), high-power brushed DC motor with 75.81:1 metal gearbox, similar to Sanyo’s popular 12 mm gearmotors. These units have a 0.365"-long, 3 mm-diameter D-shaped output shaft. Key specs at 6 V: 400 RPM and 70 mA free-run, 22 oz-in (1.6 kg-cm) and 1.6 A stall.
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    2 from local stock, 1 supplier stock; your order will dispatch between Dec 1 to Dec 10. And yes, stock levels and lead times are accurate!

    Delivered by Mar 4th
  2. 10:1 Micro Metal Gearmotor HP with Extended Motor Shaft
    Rating:
    80% of 100
    SKU: POLOLU-2211 Brand: Pololu
    This gearmotor is a miniature (0.94" x 0.39" x 0.47"), high-quality, high-power motor with 9.96:1 metal gearbox, similar to Sanyo’s popular 12 mm gearmotors. These units have a 0.365"-long, 3 mm-diameter D-shaped output shaft. This version also has a 4.5 x 1 mm extended motor shaft. Key specs at 6 V: 3000 RPM and 120 mA free-run, 4 oz-in (0.3 kg-cm) and 1.6 A stall.
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    0 from local stock, 1 supplier stock; your order will dispatch between Dec 1 to Dec 10. And yes, stock levels and lead times are accurate!

    Available with 5 to 9 day lead time
  3. 150:1 Micro Metal Gearmotor HPCB 6V SKU: POLOLU-3066
    SKU: POLOLU-3066 Brand: Pololu
    This gearmotor is a miniature high-power, 6 V brushed DC motor with long-life carbon brushes and a 150.58:1 metal gearbox. It has a cross section of 10 × 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter.
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    0 from local stock, 1 supplier stock; your order will dispatch between Dec 1 to Dec 10. And yes, stock levels and lead times are accurate!

    Available with 5 to 9 day lead time

25D mm

25mm diameter motors are the next size up if your project needs a bit more power. They're a nice standard size from Pololu, and we've got mounting brackets to match.

  1. 34:1 Metal Gearmotor 25Dx52L mm HP
    SKU: POLOLU-1573 Brand: Pololu
    This cylindrical, 2.05" x 0.98" x 0.98" gearmotor uses a brushed DC motor with extra-strong magnets and a 34.014:1 metal gearbox to deliver a lot of power in a relatively small package. These units have a 0.315"-long, 4 mm-diameter D-shaped output shaft. This is the same motor used on the Dagu Wild Thumper 6WD all-terrain chassis 34:1. Pololu also carry a lower-power version of this gearmotor and a version with an encoder. Key specs at 6 V: 285 RPM and 450 mA free-run, 60 oz-in (4.3 kg-cm) and 6 A stall.
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    3 from local stock, 1 supplier stock; your order will dispatch between Dec 1 to Dec 10. And yes, stock levels and lead times are accurate!

    Delivered by Mar 4th

37D mm

If you're looking for some serious grunt, then these 37mm diameter metal gearbox motors are just the ticket, with their all metal construction and high power output.

  1. 50:1 Metal Gearmotor 37Dx54L mm 12V (Helical Pinion)
    Rating:
    100% of 100
    SKU: POLOLU-4743 Brand: Pololu
    This gearmotor is a powerful brushed DC motor with 50:1 metal gearbox intended for operation at 12 V. The gearbox is composed mainly of spur gears, but it features helical gears for the first stage for reduced noise and improved efficiency. These units have a 16 mm-long, 6 mm-diameter D-shaped output shaft. This gearmotor is also available with an integrated encoder.
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    3 from local stock, 1 supplier stock; your order will dispatch between Dec 1 to Dec 10. And yes, stock levels and lead times are accurate!

    Delivered by Mar 4th
  2. 30:1 Metal Gearmotor 37Dx68L mm with 64 CPR Encoder (Helical Pinion)
    SKU: POLOLU-4752 Brand: Pololu
    This gearmotor is a powerful 12V brushed DC motor with a 30:1 metal gearbox and an integrated quadrature encoder that provides a resolution of 64 counts per revolution of the motor shaft, which corresponds to 1920 counts per revolution of the gearbox’s output shaft. The gearbox is composed mainly of spur gears, but it features helical gears for the first stage for reduced noise and improved efficiency. These units have a 16 mm-long, 6 mm-diameter D-shaped output shaft. This gearmotor is also available without an encoder.
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    1 from local stock, 1 supplier stock; your order will dispatch between Dec 1 to Dec 10. And yes, stock levels and lead times are accurate!

    Delivered by Mar 4th
  1. Pololu Micro Metal Gearmotor Bracket Pair - Black
    Rating:
    100% of 100
    SKU: POLOLU-989 Brand: Pololu
    This compact bracket enables convenient mounting of popular, Sanyo-style micro metal gearmotors. The black plastic bracket encloses the otherwise exposed gears, and the mounting tabs capture the nuts for easy installation. The brackets are sold in pairs, and each bracket comes with two #2 screws and two nuts.
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    5 from local stock, 1 supplier stock; your order will dispatch between Dec 1 to Dec 10. And yes, stock levels and lead times are accurate!

    Delivered by Mar 4th
  2. Pololu 25D mm Metal Gearmotor Bracket Pair
    Rating:
    100% of 100
    SKU: POLOLU-2676 Brand: Pololu
    These aluminum gearmotor brackets let you securely mount Pololu’s 25D mm metal gearmotors to your project. The brackets are sold in pairs, and each bracket includes four M3 screws for securing the motor to the bracket. Each bracket also features seven mounting holes and twelve mounting slots for M3 or #4-size screws (not included), giving you a variety of mounting options.
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    0 from local stock, 1 supplier stock; your order will dispatch between Dec 1 to Dec 10. And yes, stock levels and lead times are accurate!

    Available with 5 to 9 day lead time
  3. Pololu Stamped Aluminum L-Bracket Pair for 37D mm Metal Gearmotors
    Rating:
    100% of 100
    SKU: POLOLU-1084 Brand: Pololu
    These aluminum gearmotor brackets let you mount Pololu’s 37D mm metal gearmotors to your project. The brackets are sold in pairs, and each bracket includes six M3 screws for securing the motor to the bracket. Each bracket also features fourteen mounting holes for M3 or #4-size screws (not included), giving you a variety of mounting options.
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    1 from local stock, 1 supplier stock; your order will dispatch between Dec 1 to Dec 10. And yes, stock levels and lead times are accurate!

    Delivered by Mar 4th
  4. Magnetic Encoder Pair Kit with Top-Entry Connector for Micro Metal Gearmotors, 12 CPR, 2.7-18V
    SKU: POLOLU-4760 Brand: Pololu
    Add quadrature encoders to your micro metal gearmotors (extended back shaft version required) with this kit that uses a magnetic disc and hall effect sensors to provide 12 counts per revolution of the motor shaft. The sensors operate from 2.7 V to 18 V and provide digital outputs that can be connected directly to a microcontroller or other digital circuit.
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    1 from local stock, 1 supplier stock; your order will dispatch between Dec 1 to Dec 10. And yes, stock levels and lead times are accurate!

    Delivered by Mar 4th
  5. Magnetic Encoder Pair Kit with Side-Entry Connector for Micro Metal Gearmotors, 12 CPR, 2.7-18V
    SKU: POLOLU-4761 Brand: Pololu
    Add quadrature encoders to your micro metal gearmotors (extended back shaft version required) with this kit that uses a magnetic disc and hall effect sensors to provide 12 counts per revolution of the motor shaft. The sensors operate from 2.7 V to 18 V and provide digital outputs that can be connected directly to a microcontroller or other digital circuit
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    2 from local stock, 1 supplier stock; your order will dispatch between Dec 1 to Dec 10. And yes, stock levels and lead times are accurate!

    Delivered by Mar 4th
  6. Magnetic Encoder Pair Kit for Micro Metal Gearmotors, 12 CPR, 2.7-18V (HPCB compatible)
    Rating:
    100% of 100
    SKU: POLOLU-3081 Brand: Pololu
    Add quadrature encoders to your micro metal gearmotors (extended back shaft version required) with this kit that uses a magnetic disc and hall effect sensors to provide 12 counts per revolution of the motor shaft. The sensors operate from 2.7 V to 18 V and provide digital outputs that can be connected directly to a microcontroller or other digital circuit.
    - +

    1 from local stock, 1 supplier stock; your order will dispatch between Dec 1 to Dec 10. And yes, stock levels and lead times are accurate!

    Delivered by Mar 4th

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