Ballscrew lubrication

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Peter Fairbrother - 26 Apr 2009 20:07 GMT

Does one lubricate ballscrews? With what?

(I've seen ones with grease nipples, but these don't have them)

Thanks,

-- Peter Fairbrother

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Andrew Mawson - 26 Apr 2009 21:15 GMT

> Does one lubricate ballscrews? With what?
>
[quoted text clipped - 3 lines]
>
> -- Peter Fairbrother

My Beaver Partsmaster pumps 1.57cc of light machine oil to the ways
and three balls screws every 15 mins when the power is on. Air
pressure delivers it by an array of manifolds and nylon pipes.

AWEM

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duttondock@onetel.com - 26 Apr 2009 22:36 GMT

On 26 Apr, 21:15, "Andrew Mawson"
<andrew@no_spam_please_mawson.org.uk> wrote:

> > Does one lubricate ballscrews? With what?
>
[quoted text clipped - 9 lines]
>
> AWEM

I wonder how they decided on 1.57cc, rather than 1.58 or 1.56 etc? Or
even 1.5 or 1.6cc? I can't imagine it was arrived at after months of
trials or precise design <G>

Tim

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Andrew Mawson - 27 Apr 2009 08:10 GMT

> On 26 Apr, 21:15, "Andrew Mawson"
> <andrew@no_spam_please_mawson.org.uk> wrote:
[quoted text clipped - 18 lines]
>
> Tim

I reckon, being cynical, that that's how it worked out with the
components used, and just measured it so the night shift would know
how often to top the tank up!

AWEM

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Alun - 27 Apr 2009 09:05 GMT

> On 26 Apr, 21:15, "Andrew Mawson"
> <andrew@no_spam_please_mawson.org.uk> wrote:
[quoted text clipped - 6 lines]
> even 1.5 or 1.6cc? I can't imagine it was arrived at after months of
> trials or precise design <G>

Mebbe PI appeared in the calculation somewhere and the design
calculation arrived at PI / 2 ?

Or is that but pie-in-the-sky?

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Bob Minchin - 27 Apr 2009 09:32 GMT

>> On 26 Apr, 21:15, "Andrew Mawson"
>> <andrew@no_spam_please_mawson.org.uk> wrote:
[quoted text clipped - 11 lines]
>
> Or is that but pie-in-the-sky?

Maybe it is the correct 'degree' of lubrication expressed in radians?
Bob
OK, hat,c oat & Bye!

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duttondock@onetel.com - 27 Apr 2009 10:51 GMT

> > <duttond...@onetel.com> wrote in message
> >news:fc852eda-e847-4e4c-bb45-fef02ac2827d@w31g2000prd.googlegroups.com...
[quoted text clipped - 17 lines]
> Bob
> OK, hat,c oat & Bye!

Actually it's very close to 0.05 cu.in. <g>

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David Powell - 27 Apr 2009 19:54 GMT

In article
<1465cb84-042f-48fb-a2d7-54572ca10113@j9g2000prh.googlegroups.com>,

>> > <duttond...@onetel.com> wrote in message
>> >news:fc852eda-e847-4e4c-bb45-fef02ac2827d@w31g2000prd.googlegroups.com...
[quoted text clipped - 19 lines]
>
>Actually it's very close to 0.05 cu.in. <g>

For some definition of "very close".

I'll settle for a couple of micro cubic yards, but that's missing the
point. We have a flow rate of 1.57cc/15min. Let's take a stab at it
and use the standard workshop measuring cylinder (a pint milk
bottle). We then get 300 doses/pint, or sufficient for 75 hours. So
half a pint per 37 1/2hour working week. Simple, innit?

Regards,

David P.

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Model Forum / General / Models / April 2009

Ballscrew lubrication