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Thread: Ballnut advice and specification

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  1. 10-17-2018, 10:13 PM #1
    men8ifr
    men8ifr is offline Member
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    Ballnut advice and specification

    Can anyone offer advice on ballnut quality/price. Ballscrew specification is easy to find - very little information on ballnuts which may be equally critical.

    I can find this info on some relatively cheap ballnuts http://www.cnc4you.co.uk/resources/Ballnut+data.PDF

    That would seem to say 20mm ballnuts have much better rigidity than 16mm and 20mm dia you have to load 25kg for 1Um movement? If true I would not need to look for better quality nuts - no mention of backlash though, is it assumed to be zero?
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  2. 10-18-2018, 05:12 PM #2
    skrubol
    skrubol is offline Registered
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    Re: Ballnut advice and specification

    If they aren't double nuts or preloaded, they will have backlash. It will be very small compared to lead screws though.
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