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We have ✅ 3 available of the AF-3949 in our Sydney warehouse. An extra 38 units available with a short lead time.

Express post delivery (2-5 business days)

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 with 4-40 or M3 screws (not included). The steel ball bearing rolls fluidly in all directions, making it an excellent low-friction pivot point.

Key Features

  • Smooth Steel Ball Bearing – Fluid omnidirectional rolling motion
  • Compact 16mm Height – Suitable for small to medium robot chassis
  • Dual Mounting Holes – Attach with 4-40 or M3 screws to any chassis material
  • Lightweight – Only 8g total weight
  • Durable Metal Construction – Built for long-lasting use

Specifications

  • Ball Diameter – 12mm
  • Overall Height – 16mm
  • Fixed Hole Diameter – 4mm (below bearing wheel)
  • Mounting Hole Diameter – 4mm
  • Mounting Hole Distance – Approximately 10.5mm
  • Weight – 8g

Ideal For

  • Two-wheeled robot chassis as a rear support caster
  • Small robotics projects and line-following robots
  • Any project needing a low-profile omnidirectional wheel

Package Contents

  • 1× 16mm Metal Caster Bearing Wheel
Note: Mounting screws are not included. Use 4-40 or M3 screws to attach. Need more clearance? Check out the 20mm Height Metal Caster Bearing Wheel for taller chassis.

The 16mm Height Metal Caster Bearing Wheel appears in the following collections:

SKU AF-3949