Pololu Wheel for Micro Servo Splines (21T, 4.8mm) - 40×7mm, Black, 2-Pack

Overview

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.

60 mm and 40 mm Pololu Wheels for Micro Servo Splines on FEETECH’s FT90R and FS90R micro continuous rotation servos.

60 mm and 40 mm Pololu Wheels for Micro Servo Splines (21T, 4.8mm).

Other wheel options

We have similar wheels available in different sizes and colors and with different spline compatibilities:

Pololu Wheels for Standard and Micro Servos - 40, 60, 70, and 90 mm diameters.

We also carry an array of wheels compatible with 3mm D shafts:

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.

Specifications

Dimensions

General specifications

Notes:

1 Per wheel, including tire

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