mBot N20 Vacuum Steel Ball Universal Wheel (Castor)

    • $0.75
  • Ex Tax: $0.75
    • 10 or more $0.69
    • 50 or more $0.60
  • Cashback: 3%
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  • Product Code: WL-BTU-N20
  • MPN:
  • Warranty Period: 12 months

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A caster is a wheeled device typically mounted to a larger object that enables relatively easy rollingmovement of the object. Casters are essentially housings, that include a wheel and a mounting to install the caster to objects. They range in size and depends on how you want to use them.

If you like building mobile robot, you will understand a good castor will provides better navigation method. This is the castor being used on mBot, to support the base from falling forward.

Yes, castor is needed for mobile robot to support the base, especially two wheels mobile robot. Here is the perfect castor with steel ball for small mobile robot. The height is 16mm (from mounting surface to the ball), and the mounting hole is 4.0 mm.

Note: mBot is excluded in the packing list. If you want to buy the mBot you can get it from here.

  • Steel ball castor
  • 16mm height
  • 4mm mounting hole


  • Material: Metal + Plastic
  • Size: 23.7mm x 15.7mm x 16mm (Approximate)
  • Hole-to-hole distance: ±15mm (Please allow 1mm differ due to manual measurement)
  • Weight: 10g 

Packing List
  • 1 x mBot N20 Vacuum Steel Ball Universal Wheel (Castor)
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Tags: N20, mbot, Castor, Univeral Wheel