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Which leadscrew lubricant to use?

Discussion in 'CNC Mills/Routers' started by evalon, Aug 3, 2018.

  1. evalon

    evalon Well-Known
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    Hi again,

    I am about to complete my CNC build (WorkBee) and to this end have been considering which lubricant to use on the leadscrews ...

    Since I will be milling both aluminum, copper etc., and wood, I reckon it would be feasible with a "dry" lubricant - e.g. graphite or PTFE based. Personally I would prefer a graphite based lubricant since - although not large amounts will be used - it will have virtually no environmental impact. Have people here any experience with graphite (or the like) based dry lubes for the lead screws?

    Cheers & thanks for considering,

    Jesper
     
  2. Scotty Orr

    Scotty Orr Master
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  3. evalon

    evalon Well-Known
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  4. Scotty Orr

    Scotty Orr Master
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    I'm not 100% sure why, but I suspect it has something to do with being the least "abrasive" for the delrin nut-block. They also recommend the silicone for lubricating the wheels against the v-slot.

    I just opted to follow the recommendations, but perhaps others here have tried other lubes with success.
     
  5. evalon

    evalon Well-Known
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    Hi again Scotty,

    Thanks once more for your feedback ... I will see what is available over here (Denmark) ... The lubricant you suggested is available from the UK - but only if I buy 12 of them :confused: ... an amount which probably will outlive me ...

    Cheers,

    Jesper
     
  6. JustinTime

    JustinTime Master
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    I think that the reason you don't use graphite, besides being abrasive is that it's powder and doesn't lend itself to cover and stay on a screw that turns.

    I'm 100% sure that you have some kind of silicone spray in Denmark.
     
  7. halfshavedyaks

    halfshavedyaks Journeyman
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    I wonder if some of the products designed for bicycle chains would work. seems to me the requirements are similar.

    many of those include teflon which I avoid using (especially for disposable items) for environmental reasons, but there are also some that don't.

    some bike chain lubricants dry to a waxy coating which doesn't attract dust but does stay on the part that needs lubrication.

    I've recently started using this on my bike: Bio Dry Lube

    it seems fine although I wouldn't go so far as to say it's the best or better than anything else especially.
     
  8. evalon

    evalon Well-Known
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    @JustinTime & halfshavedyaks:

    Thanks both of you for suggesting & commenting.

    As it is I would also prefer to not use PTFE containing lubes for environmental reasons ... and I actually would really prefer to use an environmentally friendly lube, however, for some years I used a 100% bio-degradable chain oil (everything about this oil was either bio-degradable or recyclable) and it happened to dry up in rubbery flakes on the chain. It took me quite some hours of work to get it off again ... So I am a bit cautious here ...

    Currently I am using this chain lube:

    Pedros Chainj lube

    Might be it can be used on the lead screws as well ... Any thoughts anyone??

    Cheers,

    Jesper
     
  9. Giarc

    Giarc Master
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    Is lubrication a requirement? I have never used it since my anti-backlash nuts are Delrin, which is self lubricating. Or is the lubrication to prevent rusting of the screws?
     
  10. evalon

    evalon Well-Known
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    ... Hmmm ... good question. In my case I don't think the screw nuts are delrin - looks like aluminum and I would guess that a lubricant would prolong life time ...

    Cheers,

    Jesper
     
  11. halfshavedyaks

    halfshavedyaks Journeyman
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    yes it hadn't occurred to me that the screws needed lubricating, but I have the delrin nuts and the screws still have their film of oil from new.

    my 3D printer Z axis has screws and has never seemed to need lubricating - it has brass nuts - but also much less speed and power is applied than on a workbee.
     
  12. Andreas Bockert

    Andreas Bockert Veteran
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    I read recommendations for air tool oil somewhere on the internet.
     

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