R & P / Ball Screws

[AxiscncMN]

My question is.....

I'm using all NEMA 34's. Can I use rack and pinion drive at a 3:1 ratio for my Y axis, and then use direct drive on ball screws for my X and Z axis???

Or do all the drives have to be the same drive ratio???

Thanks in advance!!

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[jones]

You can use whatever ratios or drive system you like interchangeably for each axis

[skrubol]

It's generally optimal to have the X and Y have similar speeds and forces, if not you will often be limited by the slower/weaker one. It doesn't hurt if one is faster or more powerful though.
Z generally can be a bit slower than the X and Y, but may need more force if you don't have some sort of counterbalance.