Diy Brushless Spindle

[Villacherman]

I just figured out grub screws are 4-40 set screws... I'm learning everyday!

Neil, was the shaft of the motor hard to swap out for the collet shank? Anything I should not do? I want to give it a try this weekend. I'll do all the usual, keep things straight and support, remove the circlip, etc...

[njhussey]

I just figured out grub screws are 4-40 set screws... I'm learning everyday!

I'd be using 2 off M2 x 3 grub screws and locktite in each collar (will prob make it 3mm thick for extra purchase of the grub screws) as per the attached photo.

Neil, was the shaft of the motor hard to swap out for the collet shank? Anything I should not do? I want to give it a try this weekend. I'll do all the usual, keep things straight and support, remove the circlip, etc...

I removed the circlip and pulled the bell off the motor complete with the shaft. Then put the bell on the vice so the shaft was between the jaws but the bell resting on top (obviously with a cloth on the jaws to stop marks) and using a 6mm piece of steel I had lying around gently tapped the shaft out of the bell (obviously remove the retaining grub screw first!!) slid out fine!

I've not put the collet shank in the housing properly yet (although I did fit it slightly on to see how it spum ) as I'm waiting to make the bearing housing first. Been far too busy at work this week to do any machining in my lunch but hoping to get it done next week. This weekend I'll be making my router gantry sides and trying to get that sorted although I keep changing my mind on how to do it!!

[rnr107]

Hi blackburn mark,
Looks very interesting concept! :-)
I just have 1 question so, How do you get the original shaft out of the motor?
Is it fitted with an interference fit to the bearings?

Ta,
RNR