There is a ball screw that is very close to what I need for my dream machine. However the ones I have found in the past that have been closer were about five times more expensive. This is a Precision Rolled Screw with a pitch of 40mm and a backlash of .0002. it sure sounds like a winner for my budget. I can always upgrade later after I use this ball screw for the machine. What I would like to ask is: Are there any downsides to using a ballscrew with high pitch such as this one? Will I need a high torque motor to be able to machine at slow speeds? How will this affect my machined parts?

Just anything that you can think of mentioning I would like to hear out. I have read about ballscrews but I know there are experiences that the information has left out. Real world experience... So please chime in, I would appreciate it. Thanks