Our metal ball caster is crafted from a 1mm thick steel plate via machine stamping. It's strong yet lightweight, capable of supporting a 15KG payload. With a 20mm high round body and a total weight of just 37g, it's incredibly portable. The caster features a unique design with 40 large and small steel balls, enabling the main scroll ball to rotate smoothly. This allows robots to move in a more flexible and comfortable manner. Our popular 2WD Arduino robot Platform uses this caster. You can purchase this item with 150 reward points. Specifications: Fixed hole is 4mm, center distance to fixed holes is 40mm, ball body height is 20mm, ball protruding height is 4mm, bearing ball number is 40, maximum load is 15KG, ball diameter is 15mm, and weight is 37g. Shipping list includes 1 metal ball caster.


Using this metal ball caster is easy. Just attach it to your robot or the equipment you want to move through the 4mm fixed holes with a center - to - center distance of 40mm. Make sure the caster is firmly installed to avoid any loosening during movement. When it comes to maintenance, keep the caster clean. You can use a dry cloth to wipe off dust and debris regularly. Avoid overloading the caster as its maximum load capacity is 15KG. If you notice that the rotation becomes less smooth, check the 40 steel balls inside. If any are damaged, it might be time to replace the caster. Also, store the caster in a dry place to prevent rusting.