Ball casters provide a small, low‑friction support point for wheeled platforms and moving mechanisms, supplying an omnidirectional contact that helps stabilise differential drive robots, prototypes and light automation rigs. Typical uses include serving as a third wheel on a mobile base, replacing worn castors in compact chassis, or adding a smooth pivot point on a rotating stage.
Products vary by ball material, ball diameter and total height. Metal balls offer wear resistance and smoother rolling under load, while plastic balls keep weight and cost down. Many kits include spacers for adjustable height, snap‑together housings or roller bearings for reduced friction and straightforward integration.
Code: MEC-030214
This all metal ball caster has a 24mm ball and a total height of 30mm. It makes a great 3rd wheel for a robot. More Details...
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Code: MEC-30056
Tamiya’s steel-ball castor is a good way to give a “third wheel” to a small robot powered by a differential drive. The kit comes with enough parts to make two casters, either 25 mm or 35 mm in height. More Details...
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