The Viltrox V2-500 Slider REPLACEMENT ROLLER sits in the end of the camera slider. There are 4 rollers / bearings, two on each end. This is a chinese version of the Edelkrone slider.

My belt came loose and I lost one of my roller bearings. I couldn't find a replacement, so I designed this. It doesn't have a moving bearing, since I only needed to replace 1. It can be modified and redesigned to include a bearing. It still holds the belt and slides smoothly. If you had to replace all of them, it may not work as good.

I made it in two parts. The half rounded piece only fits one way into the opening of the rounded pully. It fits pretty snugly, but you could also superglue it in place if needed. The reason I didn't print it as one piece is because it would cause printing problems since the two half round ends would have been elevated off the printing platform.