Spindle motors resonable options

[keith77777]

Recently I've made myself new spindle. two taper bearings, ER20 shaft, belt and motor. cheap and very good solution. You can see it at http://malamuterun.co.uk/homemade_cnc_mill_spindle.htm . Maybe this will help a bit

Yes thats a very good solution ! I cant see the point in using routers etc when you know they wont stand the strain. However I saw that in some of the ads the spindles had threads thro the draw bar hole in the centre could this be used to retain the bearings and a pulley ?

Any wanting to make from scratch could of course cast an aluminium bearing housing.

Best regards Keith

[wiatroda]

the draw bar hole in the centre could this be used to retain the bearings and a pulley ?

Best regards Keith

Keith, did you mean something like this ???

BTW, my grub screwed shaft collar is still keeping strong. Nothing got loose so far. While I'm writing this the machine is cutting out some profiles from 3mm mild steel :). Recently I had an idea to make CVT to transfer power from motor to spindle. Few problems are bugging me: high cost of materials to make a 150mm dia pulleys and availability of multi-speed belt( like this http://www.gates.com/index.cfm?location_id=3106).