> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

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

**Type:** Product page · **SKU:** POLOLU-183 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia)
**Page:** https://core-electronics.com.au/solarbotics-gm7-120-1-mini-gear-motor-90-deg-output.html ([markdown](https://core-electronics.com.au/solarbotics-gm7-120-1-mini-gear-motor-90-deg-output.html.md))

## Retired product

This product is retired and no longer available for purchase. Search the catalogue for an alternative.

## How to buy

- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

**Note:** Pololu now have a similar, slightly less expensive version of this motor: the **[Pololu 120:1 mini plastic gearmotor](https://core-electronics.com.au/120-1-mini-plastic-gearmotor-90-2mm-spline-output.html)**. We also have a **[version with a 3mm-diameter D-shaft](https://core-electronics.com.au/120-1-mini-plastic-gearmotor-90-3mm-d-shaft-output.html)** that works with Pololu's large selection of [Pololu wheels](https://core-electronics.com.au/#).

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](https://core-electronics.com.au/pololu-qik-2s9v1-dual-serial-motor-controller.html).

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](https://core-electronics.com.au/catalog/product/view/sku/POLOLU-190) is available for this gearmotor, as well as a [LEGO wheel adapter](https://core-electronics.com.au/2mm-shaft-adapter.html) 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](https://core-electronics.com.au/solarbotics-gm6-120-1-mini-gear-motor-offset-output.html). For a similar but larger gearmotor, see the [GM3 gearmotor](https://core-electronics.com.au/solarbotics-gm3-224-1-gear-motor-90-deg-output.html) (224:1) and the [GM9 gearmotor](https://core-electronics.com.au/solarbotics-gm9-143-1-gear-motor-90-deg-output.html) (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
 
| ![](https://core-electronics.com.au/media/remote_images/0J3702.600_iJvVHT.png%3Fc63e7251bb50ff4010b3da6b29ad955c) |
|---|
| 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.

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/s/o/solarbotics_gm7_120_1_mini_gear_motor_90_deg._output__pololu_183__00.jpg)