Diy Brushless Spindle

[blackburn mark]

hi neil, sounds like youll have no problems with the project

id be tempted to go with an ER11 C8 with a little less overhang

http://www.ebay.co.uk/itm/ER11-8MM-S...item231507033b

if you compare this with the one you linked i think youll know what im driving at... it may make little diffrence when cutting balsa but when aiming to cut ali every little bit of stiffness you can gain will help (i have cut ali with mine)

iv used cheep skate bearing in my ER C8 spindle... iv used belleville washers to put some tention between the two outer races.... i havnt had to change them yet but it only gets light use

if you dont put any tension on those skate bearings the balls will skid and self destruct pretty quickly


the layout is not to clear in this picture, youll have to let me know if you dont get it

[Metsuko]

hi neil, sounds like youll have no problems with the project

id be tempted to go with an ER11 C8 with a little less overhang

http://www.ebay.co.uk/itm/ER11-8MM-S...item231507033b

if you compare this with the one you linked i think youll know what im driving at... it may make little diffrence when cutting balsa but when aiming to cut ali every little bit of stiffness you can gain will help (i have cut ali with mine)

iv used cheep skate bearing in my ER C8 spindle... iv used belleville washers to put some tention between the two outer races.... i havnt had to change them yet but it only gets light use

if you dont put any tension on those skate bearings the balls will skid and self destruct pretty quickly


the layout is not to clear in this picture, youll have to let me know if you dont get it

What is the orange motor name?

[Snowy]

Hi there,
I'm a complete novice with CNC and aero motors and speed controllers. Does anybody know the bits i'd need to order (motors, KVA and speed controllers all a bit of a puzzle) in the UK that would enable me to build something like this?
Thanks in advance

[MISTRY NILESH DHAN]

What maximum rpm can be achived with external rotor motor

can I use VFD for speed control

I found 90 watt 415 v 50 hz external rotor motor. What
capacity VFD it will work with and max rpm

Regards

[minicnc]

I recently bought a cheap Chinese CNC machine and I wanted to replace the stock 555 motor it comes with something like what you guys have shown. Max diamater for the motor that I can use is around 36mm for an inrunner and 35mm for an outrunner and uses a 25mm hole spacing for mounting the motor. I just want to be able to cut acrylic nothing else. what motor would you guys recommend?