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Solarbotics GM7 120:1 Mini Gear Motor 90 deg. Output

SKU: POLOLU-183

$10.68 AUD, inc GST
$9.71 AUD, exc GST

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Solarbotics GM7 120:1 Mini Gear Motor 90 deg. Output
10.68 AUD

SKU: POLOLU-183

$10.68 AUD, inc GST
$9.71 AUD, exc GST
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Note: Pololu now have a similar, slightly less expensive version of this motor: the Pololu 120:1 mini plastic gearmotor. We also have a version with a 3mm-diameter D-shaft that works with Pololu's large selection of Pololu wheels.

This 120:1 gearmotor (gearbox with brushed DC motor) is very compact and weighs only 0.7 ounces (20 grams) — perfect for building a quick, miniature robot.

This gearmotor starts rotation at 0.58 V, drawing only 46.5 mA at 7 RPM. At 5 V, the gearbox and motor provide 20 oz-in of torque and 145 RPM. The free-running current is 88 mA, and the stall current is 610 mA. The low-current motor is a perfect match for Pololu's qik 2s9v1 dual serial motor controller.

This gearmotor comes pre-assembled, with the gears fully enclosed. A clutch limits the output torque to approximately 25 oz-in (which is produced at 6.5 V, drawing 650 mA) to protect the gearbox and motor. The unit has one mounting hole, and the chrome-finish output shaft is splined with a 0.08" (2 mm)-crest diameter.

A custom plastic wheel is available for this gearmotor, as well as a LEGO wheel adapter that allows it to be used with a variety of LEGO wheels.

For a version of this gearmotor with the output shaft parallel to the motor shaft, see the GM6 gearmotor. For a similar but larger gearmotor, see the GM3 gearmotor (224:1) and the GM9 gearmotor (143:1).

Specifications

  • Description: Mini 90-degree
  • Gear ratio: 120:1
  • 3 V Operation:
    • No-load RPM: ~ 75
    • No-load current: ~ 80 mA
    • Stall current: ~ 310 mA
    • Stall torque: ~ 13.6 oz-in
  • 6 V Operation:
    • No-load RPM: ~ 146
    • No-load current: ~ 92 mA
    • Stall current: ~ 525 mA
    • Stall torque: ~ 23.8 oz-in
  • Weight: 19 g

Solarbotics GM7 gearmotor dimensions (in mm).

You can download a pdf version of this drawing with imperial dimensions (113k pdf) or metric dimensions (113k pdf).

Though the product picture shows two gearmotors, this product is for a single motor.

Documentation and Resources:

Product Comments

We deliver Australia-wide with these options:

  • $3 for Small Items (4-6 days, not tracked, only available on selected small items)
  • $6.95 for Standard Post (2-4 days, tracked)
  • $8.32 for Express Post (1-2 days, tracked)
  • Pickup - Free! Only available to customers who live in the Newcastle region (only after we email you to notify your order is ready)

International Orders - the following rates are for New Zealand and will vary for other countries:

  • $11.49 for Pack and Track (3+ days, tracked)
  • $16.50 for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount might increment based on the weight of your order.

Our physical address:

Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia

Please checkout our customer service page if you have other frequently asked questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.