The Castor Wheel for Robot DIY Project is a compact swivel caster engineered for lightweight robotic platforms and hobby projects. Featuring a 21 mm wheel and 37 mm base plate, this caster delivers smooth steering and reliable support while minimizing friction. Its three mounting holes (3 mm / 1/8″) spaced 120° apart make installation straightforward on custom chassis and prototyping plates. The soft rubber outer surface improves traction and reduces slippage on indoor floors, while the durable plastic hub keeps weight low for efficient motor performance. Designed for makers and students, the Castor Wheel for Robot DIY Project offers dependable operation for line-following cars, mini rovers, and STEM kits. Backed by Stemvolt quality, it’s a practical choice for classroom and DIY builds.
Related Products:
You can also explore 6mm Shaft DC Gear Motor and Mini Robot Chassis Kit that work perfectly with your Castor Wheel for Robot DIY Project.
Applications:
-
Small hobby and educational robots
-
Line-following and maze-solving robot kits
-
Mini rover and smart car platforms
-
STEM classroom projects and prototyping
-
Custom automation and mechanical builds
Specifications:
| Specification | Details |
|---|---|
| Base plate Dia. | 37 mm |
| Caster Wheel Dia. | 21 mm |
| Wheel Height | 24 mm |
| Mounting Holes | Three, 120° apart, 3 mm / 1/8 inch |
| Shaft Inner Dia | — (swivel caster; mounts to plate) |
| Material | Plastic hub with rubber outer surface |
| Usage | Robotics, DIY Projects |
| Brand | Stemvolt |
| Additional | High traction rubber, lightweight design |
Features:
-
Smooth rubber outer surface for improved grip
-
Durable plastic hub for long-lasting use
-
Lightweight design reduces motor load and increases runtime
-
Easy mounting with three 3 mm holes spaced at 120°
-
Ideal for indoor surfaces and precise steering maneuvers
Package Includes:
-
1 × Castor Wheel for Robot DIY Project
Rohit Jain –
It provides smooth multidirectional movement and excellent balance, making it an essential component for robot cars, Arduino robots, engineering projects, and educational STEM applications
Suman Agnihotri –
Quick response from support team
Mohit Gaikwad –
Value for money product
Pranav Gaur –
The sturdy design helps improve robot stability and maneuverability, while secure packaging and reliable delivery ensure a hassle-free purchasing experience for students, makers, and robotics enthusiasts
Mehul Chauhan –
Safe payment process
Anirban Ghosh –
Suitable for line follower robots, obstacle avoidance robots, autonomous vehicles, DIY robotics kits, and engineering prototypes requiring a durable caster wheel support system.
Tanmay Damani –
Well sealed box packaging
Lokesh Shriram –
Tracking available throughout delivery