You can add motion blur to an object that has no axis movement, by adding a second axis to simulate the motion.

To simulate motion blur on a still object:

1. From the View box, select Schematic.
2. From the Node bin, drag an Axis node to the schematic.
3. Press Shift and drag the original Axis node over the new Axis node.

   Still object with Axis	New axis added	New axis as child of original axis
   Image courtesy of Das Werk

4. Enable Motion Blur and animate the new axis with the desired motion.