Robotics
Robot kits, motors, servos, chassis, and everything you need to build autonomous machines and programmable robots. For beginners through to advanced builders.
Metal ball casters
SKU: DF-FIT0007 | Brand: DFRobot
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 you...
Delivered by Mon 15 Jun
16mm Height Metal Caster Bearing Wheel
SKU: AF-3949 | Brand: Adafruit
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. E...
Delivered by Mon 15 Jun
Replacement 3pi Ball Caster with 1/2 Plastic Ball
SKU: PL-957 | Brand: Pololu
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 ...
Delivered by Mon 15 Jun
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All buying guides
The Teacher's Guide to micro:bit Robots: Kits, Buggies, and Robotics Compared
Compare micro:bit-compatible robot kits, buggies, and robotics platforms by age range, assembly difficulty, sensors, and curriculum fit — for classrooms, clubs, and home learners across Australia.
49 products compared
The Maker's Guide to Servos: Torque, Speed, and Control Compared
Compare hobby and industrial servos by torque, rotation range, and control type (PWM, digital, continuous) to pick the right motor for robotics, animatronics, and RC projects.
16 products compared
