andy pugh wrote: > On 21 July 2012 23:04, Jeshua Lacock <jes...@3dtopo.com> wrote: > > >> At 5cm/rev that is 547 IPM. I think I could happily live with that. >> > > That's a very high-lead ballscrew. I haven't seen any balls crews with > a pitch twice the diameter. Are you sure you are not a factor of 10 > out? > You can get high-lead ballscrews, but they are usually special-order items. I have some fairly small ballscrews with something like 20mm lead on my pick & place machine (Yamaha/Philips). They are over a meter long, so they were fighting this exact problem. This machine runs over a m/sec so they definitely run into the danger region without a high-lead screw.
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