Hey,
I don’t want to push anything too much, but I just did not want you to jump to belt driven screws so you could get more accuracy. I see prices have gone up a bit in the last year.
1/2 10 tpi 1 start – 6 foot $28.50
http://www1.mscdirect.com/CGI/NNSRIT...MT4NO=12093076
1/2 8 tpi 2 start (4 tpi)– 6 foot $37.00
http://www1.mscdirect.com/CGI/NNSRIT...MT4NO=12093076
Here is a link of good stuff charts from Nook, a premier maker of this kind of thing. The second chart is quite interesting for speed. The site in general is worth some study. These particular charts do not include any torque or efficiency data but do show that that the ‘fixity’ or how it is held in place have an affect on rotational speed.
http://www.nookind.com/acme/acmecharts.cfm
What are you planning on using for linear bearings?
Steve
Hey Gerry, while I was typing, you were searching. I need to learn to type faster.
