These are likely non-slip rubber feet or furniture pads.
Specifications
- Material: Often CNC manufactured nylon (PA6G) or high-impact rubber/urethane.
- Drive Wheel Dimensions:
- Diameter: Typically around 130mm (approx. 5 inches).
- Width: Often 55mm wide.
- Bore/Shaft hole: Common sizes include 24mm or 19mm, some with an 8mm keyway and a set screw.
- Tracking and Idler Wheel Dimensions:
- Tracking wheel diameter: Around 102mm (approx. 4 inches).
- Idler wheel diameter: Around 50mm.
- Width: Often 55mm wide.
- Bearings: Typically use 3x 12mm bearings.
- Skateboard Wheel Dimensions (alternative use):
- Diameter: e.g., 76mm.
- Width: e.g., 53mm.
- Durometer (hardness): e.g., 78a (soft).
