Pololu Ball Caster with 3/8" Metal Ball

PololuSKU: RB-Pol-91
Manufacturer #: 951

Price  :
Sale price $2.49

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Stock  :
In stock, 14 units

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  • Metal Balls with ABS housings
  • 3/8" diameter size
  • Two spacers (1/16" and 1/8" thick)
  • Easy to assemble

The Pololu Ball Caster with 3/8" Metal Ball includes a black ABS housing, a 3/8" diameter metal ball, two spacers (1/16" and 1/8" thick) and two #2 screw sets. The total height of this ball caster is 0.4" with no spacers. You can also adjust the height by adding the spacers. The ball caster can be mounted to a chassis by the two screw sets included in the kit. The distance between the two screw holes is 0.53".

  • Height with no spacers                   - 0.40"
  • Distance between screw holes       - 0.53"
  • Weight with no spacers or screws  - 0.14 oz

Customer Reviews

Based on 2 reviews
Eric Lewandowski
Well...Be careful: a very small ball caster

Very small ball caster. I did not check the size of this item. I was a bit surprised but it seems to work well


Good little caster for two wheeled robots. Comes with mounting hardware and spacers. Better than another caster I bought from another store because there's no assembly required, just mounting.

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