Wheels, Tracks, and Ball Casters

Our selection of plastic wheels and track systems press-fit onto the 3mm D shafts of our micro and 15.5D metal gearmotors to make a nice drive solution for small robots.

Wheels, sprockets, and hubs that are compatible with Tamiya motors and gearboxes.

Wheels, sprockets, and hubs that are compatible with Solarbotics gearmotors.

Wheels and sprockets that mount on Futaba servo splines.

Our ball casters are great third contact points for small differential-drive robots. These units have larger ball diameter-to-weight ratios than industrial units, giving your robot the ability to drive over larger obstacles without adding too much weight. Several sizes and ball options are available.

These universal mounting hubs make it possible to mount custom wheels and mechanisms to a variety of motor shafts.


Pololu item #: 1555
Price: $14.95
Quantity:

These two large (120mm-diameter) wheels from Dagu Electronics match those on the Dagu Wild Thumper chassis and can be used as replacement parts or for custom robots that need to traverse complex, rugged terrain. The black tires are made of soft, spiked rubber for increased traction, and the plastic hubs are metallic red in color. The included adapters let you easily mount the wheels to motors with 4mm output shafts. These wheels are sold in pairs: you get two wheels, two 4mm adapters, and one 3mm hex wrench that matches the adapter screws.

Pololu item #: 1557
Price: $14.95
Quantity:

These two large (120mm-diameter) wheels from Dagu Electronics match those on the Dagu Wild Thumper chassis and can be used as replacement parts or for custom robots that need to traverse complex, rugged terrain. The black tires are made of soft, spiked rubber for increased traction, and the plastic hubs are chrome (silver) in color. The included adapters let you easily mount the wheels to motors with 4mm output shafts. These wheels are sold in pairs: you get two wheels, two 4mm adapters, and one 3mm hex wrench that matches the adapter screws.

Pololu item #: 109
Price: $6.25
Quantity:

The Tamiya 70140 small pulley set contains eight pulleys of different diameters for use with other Tamiya products. The included assortment of bushings allow the pulleys to be mounted on various shaft types with the pulley either idling on the shaft or rotating with it.

Pololu item #: 111
Price: $6.25
Quantity:

Tamiya 70141 large pulley set contains six pulleys of different diameters for use with other Tamiya products. The included assortment of bushings allow the pulleys to be mounted on various shaft types with the pulley either idling on the shaft or rotating with it.

Pololu item #: 108
Price: $11.00
Quantity:

The Tamiya 70121 Pulley Unit Set includes seven pulleys of various sizes, a motor, and mounting parts. This set can be combined with a variety of Tamiya products.

Pololu item #: 107
Price: $14.00
Quantity:

The Tamiya 70142 Ladder-Chain & Sprocket Set includes 96 cm of chain and four sprocket wheels compatible with Tamiya gearboxes.

On sale!
Pololu item #: 66
Price: $5.99 $6.25
Quantity:

Tamiya’s steel-ball caster is a good way to give a “third wheel” to a small robot powered by a differential drive. The kit comes with enough parts to make two casters, either 25 mm or 35 mm in height.

Pololu item #: 174
Price: $1.95
Quantity:

This plastic roller ball is a great third contact point for a small, differential-drive robot. They are sold in threes.

On sale!
Pololu item #: 106
Price: $7.95 $9.50
Quantity:

The Tamiya 70100 Track and Wheel Set allows for a large degree of adjustability and creativity in designing your own robot. The set includes a variety of track lengths, sprockets, and wheels that are compatible with multiple Tamiya products.

New!
Pololu item #: 2074
Price: $5.95
Quantity:

These ABS tracks work with a variety of injection-molded sprocket sets, making it easy to build a tracked drive system based on a number of different actuators. The miniature black track links connect together using the included dowel pins to create custom length tracks. These tracks are sold in packs of ten loose links and pins.

New!
Pololu item #: 2075
Price: $6.65
Quantity:

These ABS tracks work with a variety of injection-molded sprocket sets, making it easy to build a tracked drive system based on a number of different actuators. The miniature red track links connect together using the included dowel pins to create custom length tracks. These tracks are sold in packs of ten loose links and pins.

New!
Pololu item #: 2076
Price: $6.65
Quantity:

These ABS tracks work with a variety of injection-molded sprocket sets, making it easy to build a tracked drive system based on a number of different actuators. The miniature yellow track links connect together using the included dowel pins to create custom length tracks. These tracks are sold in packs of ten loose links and pins.

New!
Pololu item #: 2077
Price: $6.65
Quantity:

These ABS tracks work with a variety of injection-molded sprocket sets, making it easy to build a tracked drive system based on a number of different actuators. The miniature blue track links connect together using the included dowel pins to create custom length tracks. These tracks are sold in packs of ten loose links and pins.

Pololu item #: 224
Price: $9.95
Quantity:

This four-pack of 8-tooth injection-molded sprockets comes with two idler sprockets (with 1/4″ holes) and two sprockets with 3-mm hexagonal holes (for use with Tamiya Gearboxes that have 3-mm hex shafts). The track links and pins are sold separately.

Pololu item #: 359
Price: $9.95
Quantity:

This four-pack of 8-tooth injection-molded sprockets comes with two idler sprockets (with 1/4″ holes) and two sprockets with 7-mm holes for use with for use with Solarbotics GM2, GM3, GM8, and GM9 gearboxes and the larger Pololu plastic gearmotors. The track links and pins are sold separately.

Pololu item #: 358
Price: $9.95
Quantity:

This four-pack of 8-tooth injection-molded sprockets comes with two idler sprockets (with 1/4″ holes) and two sprockets designed for use with continuous rotation servos with Futaba-compatible servo splines. The track links and pins are sold separately.