Marchant Dice router no thrust bearings?

[gavztheouch]

This range of machines are supplied to the world's leading probing manufacturers, in tests we achieve an accuracy of less than 0.010mm/300mm of the whole machine.

In this situation you can see how thrust bearings may be of less importance, but these kits are being sold as cnc routers with the ability to cut material. Try yanking on the stepper shaft and feel the washer inside, unless I have misunderstood again this is the only part resisting axial motion.