> **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 RW2 Wheel (external set screw)

**Type:** Product page · **SKU:** POLOLU-642 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia)
**Page:** https://core-electronics.com.au/solarbotics-rw2-wheel-external-set-screw.html ([markdown](https://core-electronics.com.au/solarbotics-rw2-wheel-external-set-screw.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

| [![](https://a.pololu-files.com/picture/0J2849.250.jpg?1f06637716b12b64b50ed9b26a253051)](https://a.pololu-files.com/picture/0J2849.1200.jpg?1f06637716b12b64b50ed9b26a253051) |
|---|
| Solarbotics RW2 rubber wheel with black aluminum hub. |

The Solarbotics RW2 rubber wheel has a black, anodized aluminum hub with a generously thick silicone rubber tire for maximum traction (great for minisumo robots or fast line-following robots that need traction when rounding corners).

The rubber tire has a diameter of 1.1 inches (28 mm) and a width of 0.67 inches (17 mm), and it has a 20D durometer. The aluminum hub is drilled for an 3 mm axle. Secure the wheel to your motor shaft with the included 4-40 hex set screw (requires a [0.050-inch hex wrench](https://core-electronics.com.au/hex-allen-wrench-0-05.html)). The wheel assembly weighs 12 grams. If you are looking to shave some width off your robot design, consider the [Solarbotics RW2i](https://core-electronics.com.au/solarbotics-rw2i-wheel-internal-set-screw.html) wheel, which is a similar design with but has an internal set screw.

This high-traction wheel works with Pololu's [3 mm shaft gearmotors](https://core-electronics.com.au/category/57/3mm-shaft-gearmotors) such as Pololu's [micro metal gearmotors](https://core-electronics.com.au/components/motors/metal-gearmotors/micro.html) and the [GM12a, GM13a, GM14a, and GM18mini metal gearmotors](https://core-electronics.com.au/solarbotics-gm12a-100-1-mini-metal-gear-motor.html).

#### Included Parts

- One hub
- One tire
- One set screw
 
A [0.05" hex wrench](https://core-electronics.com.au/hex-allen-wrench-0-05.html) (not included) is required for mounting the wheel. The wheels are **sold individually**, NOT in pairs.

**People often buy this product together with:**

 | [![Pololu Ball Caster with 3/8](https://a.pololu-files.com/picture/0J9801.100.jpg?91fe51c38ef141b30303793b75bb3f53)](https://core-electronics.com.au/pololu-ball-caster-with-3-8-plastic-ball.html) | [Pololu Ball Caster with 3/8" Plastic Ball](https://core-electronics.com.au/pololu-ball-caster-with-3-8-plastic-ball.html) |
|---|---|

 | [![Pololu Ball Caster with 3/8](https://a.pololu-files.com/picture/0J9812.100.jpg?844e510c967fd60b68baf8789788b153)](https://core-electronics.com.au/pololu-ball-caster-with-3-8-metal-ball.html) | [Pololu Ball Caster with 3/8" Metal Ball](https://core-electronics.com.au/pololu-ball-caster-with-3-8-metal-ball.html) |
|---|---|

 | [![Pololu Micro Metal Gearmotor Bracket Pair - Black](https://a.pololu-files.com/picture/0J1128.100.jpg?da2a3bb5266037b46895d14801aacbaa)](https://core-electronics.com.au/pololu-micro-metal-gearmotor-bracket-pair-black.html) | [Pololu Micro Metal Gearmotor Bracket Pair - Black](https://core-electronics.com.au/pololu-micro-metal-gearmotor-bracket-pair-black.html) |
|---|---|

**Dimensions**

 | Size: | 1.1" diameter; 0.5" wide |
|---|---|
| Weight: | 12 g |

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/s/o/solarbotics_rw2_wheel__external_set_screw___pololu_642__00.jpg)