Pololu Ball Caster with 1/2" Metal Ball

PololuSKU: RB-Pol-93
Manufacturer #: 953

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Sale price ¥428

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  • Metal balls with ABS housings
  • 1/2" diameter size
  • Two spacers (1/16" and 1/8" thick)
  • Easy to assemble

The Pololu Ball Caster with 1/2" Metal Ball includes a black ABS housing, a 1/2" diameter metal ball, two spacers (1/16" and 1/8" thick) and two #2 screw sets. The total height of this ball caster is 0.53" 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 0.58".

  • Height with no spacers                   - 0.53"
  • Distance between screw holes       - 0.58"
  • Weight with no spacers or screws  - 0.32 oz

Customer Reviews

Based on 5 reviews
Good casters

These worked well for my application. Plastic seems plenty strong.

Excellent item for small line-following robot

Distance between mounting hole centers was 15mm. Overall height was about 13.6mm. Two 2mm x 12mm pan head Philips screws & nuts were included for mounting along with 2 plastic spacers - 1.62mm & 2.95mm. The ball is very free running and held up well running the robot on concrete floor. Tip: Remove ball from plastic housing before installing screws then pop it back in.

Perfect tiny sized caster

It can be hard to find a ball caster this small that works well. These were perfect for mini-bot projects with 2 wheeled drives.

Good product

Good product for my follow lines robot

Roller ball

Very small, Did not work for my idea, Which was to have a movable table

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