Belts or Balls getting me Screwed up! Help I need advice Please.

[longy]

Thanks very much for your input JAZZCNC, I'm busy pricing up 2010 end machined ball screws and getting even more confused with this end machining terms like " MPF, IDE, FUS, WFR, WWF, DGK, MPH" no idea what it means. Could I use 2010 on the X axis (1500) and drop down to 1610 for the Y axis ? Would this cause problem setting the machine up ?

As for the profiled linear rails I can't find the lengths I need on ebay and uk supplier prices put it well out of my limited budget, looks as if I will have to go with supported round rails.

Mike

[JAZZCNC]

No need to get confuddled it's not rocket science really. The letters will correspond the Ballnut type. You just want standard flanged ballnut.

Regards dropping the diameter for Y axis then it won't affect setting up at all. What the larger diameter tends to do is reduce the acceleration and overall rapid speed you can tune the motors to, inertia and all that, but in practice with 10mm pitch and slaved 3Nm motors you have more than enough power in reserve and will still get perfectly acceptable feeds/accel that excede what you'll ever need for cutting. Whip is something you want to avoid at all costs and your in the region of where it can happen and for the little difference I won't take the risk.

Regards the Profiled linear rail and Ballscrews for that matter then Give Chai at lineramotionbearings a email with the sizes you need, give him total length of screws including the machining, ask for them machined and he will give you a price.
I don't think he shows profiled linear rails on his Ebay site but he does supply them, I've had loads of them now and they are fine.

I'll PM you his email.