Rotating Ballnut - design ideas

[Boyan Silyavski]

+1 The advantage of roller bearings is the huge radial load they can take, in this case the axial is more significant I think. However there are one or two sizes of tapered rollers that are easily available at a very attractive price which might swing it ;-)

If you will be milling steel using 3 inch cutters yes, not in a 3m woodworking machine case scenario. But don't listen to me, put that bearings there cause they are cheap.And see what happens.

[JAZZCNC]

If you will be milling steel using 3 inch cutters yes, not in a 3m woodworking machine case scenario. But don't listen to me, put that bearings there cause they are cheap.And see what happens.

I agree with Boyan and we Both have experience of using rotating ballnut design, so you might want to listen. That design and those bearings are not good for this application because of things which have been stated. They will work ok, but they won't last ok, the forces are in all the wrong places so between this and the heat generated because these ballnuts are being run in ways they where not designed to run it will impact the life and performance.

But you could say what do we know.? In which case go for it.!