Quote Originally Posted by AndyUK View Post
No readers objected violently, so I've got a quote for the above from Fred. Very helpful and quick service.

First thing he pointed out was that I needed to specify that I'm planning to use timing belts on the ballscrews rather than direct connections, as the machining will be different. Can anyone shed some light on why? Is it a different shaft diameter or is it keyed or flatspotted for a grub screw?

Second point is he has offered two types of BK support, one with upgraded P5 AC bearings. Any thoughts?
Probably because on the ball screw where the pulley fits is called the F length I think from memory this is about 25mm if you are using pulleys then tell him to make it 30 or 35mm you can always cut it shorter.

Go for the best bearings re the BK