Solarbotics GM3 224:1 Gear Motor 90 deg. Output

SKU: POLOLU-181 Brand: Pololu

Retired Product

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This product has been retired. It is no longer available, but this page has been kept for reference.

This 224:1 gearmotor (gearbox with brushed DC motor) is a great low-cost alternative to modified hobby servos or Tamiya gearboxes. The low-current motor is a perfect match for Pololu's qik 2s9v1 dual serial motor controller, and the compact size makes this unit an attractive choice for small robot designs.

This gearmotor comes pre-assembled, with the gears fully enclosed. There are built-in mounting holes, and the output shaft is 7mm in diameter with two sides flattened (the “D” output is not meant to be used). A built-in safety clutch engages at approximately 60 oz-in.

Compatible products include a custom-molded GMPW plastic wheel, and the Solarbotics GMW motor mount, which can be used as a wheel itself or as a mounting point for other wheels or mechanisms. Solarbotics makes a mounting bracket that works with this motor, and Pololu's L-brackets and extended L-brackets for plastic gearmotors are also compatible with this motor (though you might need longer screws than the ones included with the Pololu brackets).

For similar gearmotors, you might want to take a look at:

To increase the power of this gearbox, you can replace the motor with a higher-power RM2 motor. For a replacement motor, see the RM3 motor.

Specifications

  • Description: 90-degree
  • Gear ratio: 224:1
  • 3 V Operation:
    • No-load RPM: ~ 24
    • No-load current: ~ 40 mA
    • Stall current: ~ 400 mA
    • Stall torque: ~ 49 oz-in
  • 6 V Operation:
    • No-load RPM: ~ 46
    • No-load current: ~ 50 mA
    • Stall current: ~ 733 mA
    • Stall torque: ~ 57 oz-in
  • Weight: 31 g

Solarbotics GM3 gearmotor dimensions (in mm).

You can download a pdf version of this drawing with imperial dimensions (126k pdf) or metric dimensions (126k pdf).

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

People often buy this product together with:

Tamiya 70103 Universal Gearbox Kit Tamiya 70103 Universal Gearbox Kit
Solarbotics GM2 224:1 Gear Motor Offset Output Solarbotics GM2 224:1 Gear Motor Offset Output
Solarbotics GM9 143:1 Gear Motor 90 deg. Output Solarbotics GM9 143:1 Gear Motor 90 deg. Output

Dimensions

Size: 69.4 × 22.2 × 18.6 mm1
Weight: 31 g

General specifications

Gear ratio: 224:1
No-load speed @ 6V: 46 rpm
No-load current @ 6V: 50 mA
Stall current @ 6V: 733 mA
Stall torque @ 6V: 57 oz·in
No-load speed @ 3V: 24 rpm
No-load current @ 3V: 40 mA
Stall current @ 3V: 400 mA
Stall torque @ 3V: 49 oz·in

Notes:

1
See drawing for detailed dimensions.

Documentation and other information

File downloads

This product is listed in:

Retired

Product Comments

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We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):

  • $3+ for Stamped Mail (typically 10+ business days, not tracked, only available on selected small items)
  • $6+ for Standard Post (typically 6+ business days, tracked)
  • $10+ for Express Post (typically 2+ business days, tracked)
  • Pickup - Free! Only available to customers who live in the Newcastle region (must order online and only pickup after we email to notify you the order is ready). Orders placed after 2PM may not be ready until the following business day.

Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

Some batteries (such as LiPo) can't be shipped by Air. During checkout, Express Post and International Methods will not be an option if you have that type of battery in your shopping cart.

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

  • $11+ for Pack and Track (3+ days, tracked)
  • $16+ for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount will increase based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

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

Take a look at our customer service page if you have other 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.

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