Search:

Belts are not a problem here. HTD belts are rated for these speeds. Problems are the bearings. Conical roller bearings will not spin so fast. Hence the 6000rpm limit on the spindles they sell. You...

Better read this Advice sought on new Mill build

What you need will be BT30 spindle+servo motor.+ATC attachment - all from China , Aliexpress


You should beef everything then considerably....

Well to be fair the first post did say 1000N cutting force so guessing big cutters will be used and with 0.05mm accuracy that's not much error budget within the whole machine.

Without getting in...

Now your getting what I've been trying to tell you for nearly last 2yrs. . .:toot: . . . . It gets even more stupid than just the spindle because half the time these massively over engineeered...

Now you have got me with that constant changing of the design. Why don't you like one design, stick to it and further develop it to suit your needs. If you liked the before suggested design from the...

Just spotted I forgot to attache the calculations to the previous post - I've attached them to this post instead.

14025

I'll make some general points which I think should answer the questions -...

Chai is a person

If you have the space then Fixed Gantry is the way to go without any doubt but the principle still applies regards motors and moving mass. There is nothing wrong with regular steppers if sized...

Is this the one you are thinking about as shown by Dean :- https://www.youtube.com/watch?v=ZMZdCcLQc4M

Yeah, but with sliding counter weight at the back to balance the weight of the head so at the end the bearings have less push when static than a gantry cnc