Save 21%
![Dimensions of the Pololu Ball Caster with 1″ Plastic Ball and Plastic Rollers. Units are mm over [inches].](https://www.technobotsonline.com/images/detailed/22/add-4262-117-2.png "Dimensions of the Pololu Ball Caster with 1″ Plastic Ball and Plastic Rollers. Units are mm over [inches].")
![Dimensions of the Pololu Ball Caster with 1″ Plastic Ball and Plastic Rollers. Units are mm over [inches].](https://www.technobotsonline.com/images/thumbnails/35/35/detailed/22/add-4262-117-2.png "Dimensions of the Pololu Ball Caster with 1″ Plastic Ball and Plastic Rollers. Units are mm over [inches].")
This ball caster kit includes a two-part black ABS housing, a 1″ diameter POM (also know as acetal or by the brand name Delrin) plastic ball, and three ABS rollers. When assembled, the ball caster is capable of rolling in any direction with low friction, making it suitable for use as a third contact point for wheeled, differential-drive robots weighing up to around 4.5kg.
The base piece of the housing has holes for three M3 mounting screws (not included) and slots for the three rollers. The second part of the housing snaps into the base piece to secure the ball and rollers. The assembled ball caster has an overall height of 29mm.