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Thread: Appropriate Lathe Oils
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15th March 2013, 11:34 AM #1New Member
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Appropriate Lathe Oils
Hi everyone,
This is just an FYI really, but I'd be glad for comments from people with more knowledge of oil than I! It's probably old news to some people too.
I have the 'Guide to Renovating the South Bend Lathe' book, which is guiding me on my Hercus rebuild. It specifies three oils to use in different places - spindle, gearbox and 'general'. They are 100 seconds/ISO 32, 15-240 seconds/ISO 32 and 250-500 seconds/ISO 68. (There's also 300-500 seconds way oil but I'm not too concerned about that. Chainsaw bar oil seems okay there.)
The specified oils correspond to SAE 5W, 10W and 20W monograde oils respectively, which seem hard to get in small quantities. But I've just discovered that these are readily available as motorbike fork oil, on the shelf at motorbike shops in 1L bottles. I'm off to buy some tomorrow, unless there's something I've overlooked. I guess they'll have specific additives to suit their intended application, but I don't imagine that's a problem.
Ant
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15th March 2013, 03:00 PM #2GOLD MEMBER
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When it comes to oil for these machines choice is totally up to you.
You can go and get the correct oil for the different applications that are required for the machine,not sure how price works,or if you wish just use an hydraulic oil of either 46 or 68.
I have never had a problem with the use of 46 grade hydraulic,I use it everywhere,I do spray the gear train with chain lube or chainsaw bar oil is also good.
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18th March 2013, 12:51 PM #3Member
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Hi Ant,
The motorbike fork oils are a good source of the right grades that are otherwise difficult to come by in smaller quantities, I used them for some time on my plain bearing C model.
For slides and exposed gears, chain or chainsaw bar oils are a good option, whilst the quality is generally not that good (use in a total loss system), they include "tacifiers" that help significantly with adhesion to metal surfaces.
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18th March 2013, 04:10 PM #4New Member
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Thanks guys for the input. I bought a litre of 5W for $20. Wow, that stuff is runny, and the lathe is spinning beautifully!
I'll go back for the 10 and 20 when I get further into the rebuild.
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11th April 2013, 10:44 PM #5SENIOR MEMBER
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Remember there is more to oils than simply their viscosity, and different oils have much different properties to suit their intended purpose. I agree with the comment above by Pipeclay, for spindle oil, hydraulic oil is almost certainly the best bet. It's readily available it realistic quantities and can be used as a general purpose oil on everything else on the machine. I also use bar oil on my gear train as the tackifiers in it make it stick to the gears extremely well and significantly quieten down the gear noise.
Pete
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11th April 2013, 11:10 PM #6.
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I'm with the two Peters re the hydraulic oil.
I use Mobil DTE Heavy Medium ISO68 hydraulic oil in the spindles of my lathe and Hercus mill and Vactra II on both machines ways. I opted for the heavier ISO 68 after being told by Steve Durden at Hercus that they used used 68 on all their machines.
Bob.
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