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20mm Height Metal Caster Bearing Wheel

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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 Caster – Smooth, low-friction rolling in all directions
  • 20mm Height – Suitable for most small robot chassis
  • Two Mounting Holes – 4mm diameter, 40mm apart (use M3 or 4-40 screws)
  • Compact & Lightweight – Only 19.7g

Specifications

  • Ball Diameter: 15.7mm
  • Overall Height: 20mm
  • Mounting Hole Diameter: 4mm
  • Mounting Hole Spacing: 40mm
  • Fixed Hole Diameter: 3.1mm (below bearing)
  • Weight: 19.7g

Ideal For

  • Small robot platforms and 2WD chassis
  • Third wheel / balance point for differential drive robots
  • DIY robotics projects

Package Contents

  • 1Ă— 20mm Metal Caster Bearing Wheel
Note: Mounting screws are not included. Use M3 or 4-40 screws to attach.
$1.41

Original: $4.71

-70%
20mm Height Metal Caster Bearing Wheel—

$4.71

$1.41

Product Information

Shipping & Returns

Description

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 Caster – Smooth, low-friction rolling in all directions
  • 20mm Height – Suitable for most small robot chassis
  • Two Mounting Holes – 4mm diameter, 40mm apart (use M3 or 4-40 screws)
  • Compact & Lightweight – Only 19.7g

Specifications

  • Ball Diameter: 15.7mm
  • Overall Height: 20mm
  • Mounting Hole Diameter: 4mm
  • Mounting Hole Spacing: 40mm
  • Fixed Hole Diameter: 3.1mm (below bearing)
  • Weight: 19.7g

Ideal For

  • Small robot platforms and 2WD chassis
  • Third wheel / balance point for differential drive robots
  • DIY robotics projects

Package Contents

  • 1Ă— 20mm Metal Caster Bearing Wheel
Note: Mounting screws are not included. Use M3 or 4-40 screws to attach.