Prototype wick oiler for the old lathe
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- Опубликовано: 13 сен 2024
- I'm testing my home made prototype drip feed oiler for my vintage lathe.
I'm hoping that a slow but steady oil drip will save my bearings from any more damage and limit the amount of oil seeping on to my workbench.
This prototype oiler is using a wick and capillary action to drip the oil onto the plain bronze bearings.
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You are so close !
The oilers I made are copies of Schaublin oilers and DO NOT use wicks. They use a "J" shaped piece of wire as the "siphon" which is what this type of oiler is based on.
Oil does not have to capillarate through a wick, as it will also capillarate over the outside of a solid surface (which is what it is actually doing with each fibre in a wick).
So I use the Schaublin method of a single bent piece of wire to move the oil. By varying the diameter of the wire, you vary the oil flow - bigger means more.
If you rest the curve of the wire "J" in an existing slot in the centre section of the oil pot, you can run the test again with this type of feed.
The wire "J" must be made with the small length touching the bottom of the pot and the long section feeding out the bottom of the centre section almost to the spindle.
Try it and see.
Cheers Rob
Interesting. I will try that out. But first lets see if I understood that correctly.
I basically bent a U shaped piece of metal wire that is longer on one end. The long end goes down the hole in the middle and the other end should rest on the bottom of the oil pot. Correct?
Correct.
It works like a siphon but uses surface tension of the oil rather than a vacuum. So make the longest end as long as possible to get maximum effect.
Once you wet it, the oil will be pulled up from the pot and go down to the spindle - all on the outside of the wire.
The drip rate will be the same for large and small diameter wire, but the volume of each drip will vary with the wire diameter.
I use 0.04" wire on my 9" swing Schaublin. I originally used 0.06" but it over oiled it.
I use ATF oil which is about SAE 15.
Many people (non Schaublin users) have never heard of wire wicks.
Works beautifully.
Cheers Rob
Really enjoyed this video as I have an old power hack saw that has or at least had wick oilers on the main shaft bearings and I wasn't sure how the wick was supposed to be situated. Whether it needed to contact the shaft or not, like they do in my 9A South Bend. This answered my question and now I can make a replacement. Also, while doing a search for how wick oiling worked I ran across a suggestion to use Zippo lighter wicks. And it appears from my search so far that the wick material should be natural wool.
Good to hear you got something out of it.
Wool is used because it does not catch fire easily. Modern substitute is aramid.
When you talked about drip oilers in an earlier video in the series, I thought Steve Jordan might be mentioned.
Nice video.
I like the prototype. Perhaps a design which just uses a small hole to restrict the flow. Start will small hole and enlarge until you have the rate you desire. This would need the screw to seal the oiler to stop the flow. May be easier than a wick design.
I have an idea to modify the prototype and it will have that small hole you're talking about.
I would go for a slightly thicker oil but that's a great design!
scott scherer yes here in Britain I use myford spindle oil in my myford and other lathes
I want to use a thicker oil. But that will slow the capillary action even more. So I might need a very thick wick.
Nice project, well-presented material. Sorry the results are not to your liking. On to the testing and modding video.
Thanks. It's a prototype and I already have an idea for a new oiler :)
would it slow down the flush thru of oil if the reservoir was stuffed with felt. just dribbling enough to keep the bearing surface wet..
or how about taking the spindle back out.. figuring out if you can carve a groove for felt to go in to prevent the oil from dripping thru so fast.
I don''t think the bronze bearing is thick enough to make a groove for a piece of felt.
i was really thinking about the thickest part of the bearing. just a shallow groove carved on the inside of the taper.. 1 mm wide 1 mm deep to act almost like a rear main seal.
is there any thinking on putting something to seal it in the groove on the spacer cut a thin ring of felt to pack in there you would have to make a pair of sharp edge dies to cut some felt. maybe even machine a brass face insert to ride in that groove and flat against the back face of the bearing. oil must be leaking into the groove and being spun out ..
Here is an adjustable oiler that you might be able to fabricate - the design is simple enough. * Imagine the days when only hand tools were available ! ( Looks like you're getting closer to a solution ;) ) Since your bearing has issues, the best you can hope for is oil control . . .
ruclips.net/video/x6UDVE8nvbs/видео.html
I've seen that video. But I think those are a bit above my skill level.
use a weir wick son
As suggested by xynudu