Pololu Wheel for Micro Servo Splines (20T, 4.8mm) - 40×7mm, Black, 2-Pack
Available with a lead time
Expect dispatch between Dec 26 and Dec 30
Quantity Discounts:
- 10-25 $7.25 (exc GST)
- 25+ $7.02 (exc GST)
These wheels are great for robotics, custom RC vehicles, or any other project you need to get rolling. They measure 40 mm (1.57") in diameter and are designed for use with micro servos with 4.8 mm diameter splines with 21 teeth, such as FEETECH’s FS90R micro continuous rotation servos and FT90R digital micro continuous rotation servos. The combination can serve as a small, inexpensive, and easy-to-control drive system for a miniature robot. The wheel presses onto the servo spline just like a typical servo horn, and the small screw included with the servo accessory pack for mounting servo horns should be used to hold the wheel in place. The included silicone tires are also available separately.
|
|
Product specification update (16 Nov 2021): The original product name and documentation for this wheel incorrectly said it was intended for splines with 20 teeth when it really is intended for servo splines with 21 teeth. Pololu have now corrected this in Pololu's documentation. Nothing about the product itself or its compatibility with Pololu's FS90R and FT90R servos has changed.
Other wheel options
Pololu have similar wheels available in different sizes and colors and with different spline compatibilities:
Alternatives available with variations in these parameter(s): size color shaft type Select variant…
 |
Pololu Wheels for Standard and Micro Servos – 40, 60, 70, and 90 mm diameters. |
|---|
Pololu also carry an array of wheels compatible with 3mm D shafts:
Alternatives available with variations in these parameter(s): size color Select variant…
 |
Black Pololu Wheels with 90, 80, 70, 60, 40, and 32 mm diameters (other colors available). |
|---|
 |
Pololu Wheels with 90, 80, 70, and 60 mm diameters in three colors: blue, red, and yellow. |
|---|
People often buy this product together with:
 | FEETECH FS90R Micro Continuous Rotation Servo |
 | FEETECH FT90R Digital Micro Continuous Rotation Servo |
 | Pololu Wheel for Micro Servo Splines (21T, 4.8mm) - 40×7mm, Red, 2-Pack |
Dimensions
| Size: | 40 × 7 mm |
|---|---|
| Weight: | 4.5 g1 |
General specifications
| Shaft type: | 21T, 4.8 mm diameter servo spline |
|---|---|
| Color: | black |
Identifying markings
| Molded part dev codes: | whe10a |
|---|
Notes:
File downloads
-
Dimension diagrams for Pololu Servo Wheels (1MB pdf)
This file contains dimension diagrams for the 40×7mm, 60×8mm, 70×8mm, and 90×10mm Pololu Servo Wheels.
-
3D model of Pololu Wheel for Micro Servo Splines 40×7mm (2MB step)
Exact shipping can be calculated on the view cart page (no login required).
Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc).
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)
- $7+ for Standard Post (typically 6+ business days, tracked)
- $11+ 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:
- $12+ 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.
Have a product question? We're here to help!
Videos
View AllGuides
Servos, Steppers or Solenoids? | Choosing an Actuator to Move Your Project
Getting Started with Servos | Examples with Raspberry Pi Pico
Setting up and Using the Adafruit 16-Channel Servo HAT for Raspberry Pi
How To Control A Motor with the Raspberry Pi
Projects
Pico Baro V2
Micro:bit Random Selector
DIY Pi Buggy
Makers love reviews as much as you do, please follow this link to review the products you have purchased.
Product Comments