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Pololu Ball Caster with 1/2" Plastic Ball

This light ball caster uses a 1/2" diameter plastic ball. The height of the assembled kit ranges from 0.5" to 0.8".

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How much weight can Pololu ball caster support?: Our ball casters are designed for small robots; they are not intended to bear more than a few pounds. With more weight than this, friction between the ball and the housing will probably keep it from rolling well.