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Metal ball casters
Caster (2-Pack)
MPN: PRT-24050
20mm Height Metal Caster Bearing Wheel
Mini 3-Layer Round Robot Chassis Kit - 2WD with DC Motors
16mm Height Metal Caster Bearing Wheel
Right Mecanum Wheel - 48mm Diameter - TT Motor or Cross Axle
Mini Round Robot Chassis Kit - 2WD with DC Motors
Ball Caster Omni-Directional Metal
Pololu Ball Caster with 1" Plastic Ball and Ball Bearings
2WD miniQ Robot Chassis
Left & Right Mecanum Wheel Pair - 48mm Diameter
2WD Aluminum Alloy Smart Car Platform Chassis Kit
Turtle: 2WD Arduino Mobile Robot Platform
4PCS Mecanum Wheel for DIY robot car
XRP Build-Your-Own Robotics Kit Parts - 30 Pack
MPN: KIT-28014
Robot Chassis base with 2 wheels
Mecanum Wheel (48mm) - Right
Ball Caster - 3/4 Metal Ball
Replacement 3pi Ball Caster with 1/2 Plastic Ball
Pololu Ball Caster with 3/4 Plastic Ball
Metal ball casters
A sturdy metal ball caster made from 1 mm stamped steel plate, capable of supporting loads up to 15 kg. At just 37 g and 20 mm tall, it provides smooth omnidirectional movement without adding significant weight to your robot chassis. The caster uses 40 small bearing balls around the main 15 mm s...
Caster (2-Pack)
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A pair of nylon plastic ball casters measuring 25.4 mm (1") in diameter, providing smooth omnidirectional movement for small robots and rolling platforms. These are the same casters used with the XRP robotics kits. Key Features Nylon Plastic Construction – Lightweight and durable 25.4 mm (1")...
20mm Height Metal Caster Bearing Wheel
A durable steel ball caster with smooth, fluid motion — ideal for providing a third contact point on small robot platforms. The 20mm overall height pairs well with common robot chassis and TT motor setups, and the two screw mounts make it easy to attach to any material. Key Features Steel Ball...
Mini 3-Layer Round Robot Chassis Kit - 2WD with DC Motors
A compact three-layer round robot chassis kit with two DC drive motors, matching wheels, and a caster ball for balance. The high-strength anodised aluminium alloy frame provides a sturdy platform for building your own 2WD mobile robot, with three layers of mounting space for batteries, controller...
16mm Height Metal Caster Bearing Wheel
A compact steel ball caster that provides smooth, omnidirectional movement for small robots and wheeled projects. With a 16mm overall height, it's well-suited as a third support point for two-wheeled robot chassis. Easy to mount with two screw holes spaced approximately 10.5mm apart — compatible...
Right Mecanum Wheel - 48mm Diameter - TT Motor or Cross Axle
A 48mm diameter right-hand mecanum wheel with ball-bearing-supported rollers for omnidirectional robot movement. When used in a set of four (two left, two right), mecanum wheels allow a robot to move forwards, backwards, sideways, and diagonally without turning. Nine rubber beads around the perim...
Mini Round Robot Chassis Kit - 2WD with DC Motors
This kit gives you everything you need to build the shell of a 2-wheel-drive Mobile Platform Robot! You get the metal plates that make up the chassis, two DC drive motors with matching wheels, and a caster ball for balance. You'll fill in the rest with a power supply, microcontroller board, an...
Ball Caster Omni-Directional Metal
A metal caster used for omni-directional robots.Omni-what? Imagine a robot with the dual-motor gear box. The robot can pivot in one spot, but it must also allow the other wheels on the drive train to move or slide during a turn. This caster allows the robot to rotate and pivot in all directions -...
Pololu Ball Caster with 1" Plastic Ball and Ball Bearings
This ball caster is an improved version of our original Pololu Ball Caster with 1″ Plastic Ball; we recommend this new version over the older version for all applications that are not somehow specifically tied to the previous design.This ball caster kit includes a two-part black ABS housing, a 1″...
2WD miniQ Robot Chassis
The DFRobot MiniQ 2WD robotic platform is a compact, round chassis designed for students and hobbyists. At just 122 mm in diameter, it's ideal for indoor applications including maze competitions, educational courses, and rapid prototyping of robot designs. The platform features high-quality N20 ...
Left & Right Mecanum Wheel Pair - 48mm Diameter
If you're unfamiliar with mecanum wheels, this Matching Left & Right pack of 48mm Diameter Mecanum Wheels may resemble everyday chunky wheels Frankenstein'd out of mini hair curler rollers. In reality, they are very cool, omnidirectional wheels with rollers that...
2WD Aluminum Alloy Smart Car Platform Chassis Kit
This 2WD aluminium alloy smart car platform provides a durable and stable chassis for building your own robot car. The lightweight aluminium body offers a solid foundation for mounting controllers, sensors, and other components. Easy to assemble with no soldering required, this chassis kit inclu...
Turtle: 2WD Arduino Mobile Robot Platform
The Turtle is a compact 2WD mobile robot platform designed for use with Arduino and other microcontroller boards. It comes as a kit with two geared DC motors, rubber wheels, a rear caster ball, an aluminium alloy chassis, and all mounting hardware needed for assembly. The top layer includes a st...
4PCS Mecanum Wheel for DIY robot car
A set of four omnidirectional mecanum wheels designed for DIY robot cars. Mecanum wheels use angled rollers to enable 360° movement — including lateral translation, diagonal travel, and on-the-spot rotation — without needing a steering mechanism. Each wheel features a cross-axis mounting port co...
XRP Build-Your-Own Robotics Kit Parts - 30 Pack
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The Experiential Robotics Platform (XRP) is a hands-on robotics platform designed for learning, prototyping and classroom projects. This build-your-own 30 pack supplies the hardware pillar of the XRP ecosystem, helping students build and program robots from beginner tasks through to more advanced...
Robot Chassis base with 2 wheels
This two-wheel robot chassis provides a ready-to-build platform for your own robotics projects. It comes with two DC motors and wheels, plus a caster wheel for balance — just add your own controller board (Arduino, Micro:bit, Raspberry Pi, or similar) and a motor driver to get moving. The transp...
Mecanum Wheel (48mm) - Right
A 48 mm right-handed Mecanum wheel that enables omnidirectional movement for robot platforms. Using angled rollers mounted around the wheel's circumference, Mecanum wheels allow a vehicle to move forward, sideways, diagonally, and rotate on the spot when used in sets of four with the correct left...
Ball Caster - 3/4 Metal Ball
Get your robot rolling with this durable and smooth metal ball caster. We like the size (not too big, not too small) and surprisingly smooth motion of this caster. It's also really easy to attach, with two screw mounts (and included screws) that will allow you to attach it to any material up to 5...
Replacement 3pi Ball Caster with 1/2 Plastic Ball
This ball caster was originally released as a replacement part for the 3pi robot, but the 1/2″ ball can also be used a replacement part for the newer 3pi+ robot, which has the housing for the ball built directly into the chassis. This ball caster can also be used as a general-purpose ball caster...
Pololu Ball Caster with 3/4 Plastic Ball
This light ball caster uses a 3/4″ diameter plastic ball. The height of the assembled kit ranges from 0.9″ to 1.2″, depending on the combination of included spacers used. Included dowel pins can be used to reduce the friction between the ball and the ABS housing, but they are not necessary for o...