The Castor Wheel for Robot DIY Project is a plastic swivel caster with a 21mm wheel diameter, 24mm total wheel height, and a 37mm circular base plate with three mounting holes spaced 120 degrees apart at 3mm diameter, designed as a passive support wheel for robot chassis, DIY builds, and light duty platforms. These castor wheels use a triangular 3-hole mounting pattern rather than the rectangular 4-hole pattern of other caster variants — the 120-degree equal spacing distributes mounting loads symmetrically from any direction, which reduces the risk of the base plate rocking under off-axis forces compared to a linear 2-point or asymmetric mounting arrangement.
The castor wheel for chassis circular base plate design also provides rotational symmetry — a 37mm round plate seats equally well in any angular orientation during installation, whereas a rectangular plate requires alignment to specific chassis hole patterns. This caster wheel for robot mounts via standard M3 (3mm) screws available in most robotics hardware kits, and the 360-degree swivel mechanism allows the wheel to self-align in the direction of chassis travel without requiring any steering mechanism or motor connection.
This castor wheel for robotics project’s 21mm wheel diameter and 24mm total height suit compact robot chassis where the lower 25mm nylon swivel caster variant would provide slightly more clearance — builders should match the castor height to their chassis drive wheel radius to ensure the platform sits level.
Related Products:
- Checkout Pulley Wheel 6.5cm x 2cm
Features:
- 3-hole 120° triangular mount distributes load symmetrically from all directions
- 37mm circular base plate installs in any angular orientation
- 360° swivel self-aligns with travel direction without steering motor
- 3mm M3 mounting holes compatible with standard robotics hardware kits
- 21mm wheel suits compact chassis needing low-profile passive support
Technical Specifications:
Applications:
- Castor Wheel for Robot DIY Project used for compact robot chassis
- India robotics uses castor wheels for 3-hole triangular mount chassis
- STEM kit uses castor wheel for chassis for passive swivel demo
- Maker uses caster wheel for robot for low-profile support build
- College project uses castor wheel for robotics project for level test
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