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Oil for Edgwick Lathe

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PekkaNF:
OK, so i is traditional hydraulic ISO VG 68 hydraulic oil.
http://www.penriteoil.com.au/products.php?id_categ=13&id_subcateg=78&id_products=116

Just out of curiocity:
* Does lathe has a pump for oil circulation? Probably does, because hydraulic oils are made to be pumped around and don't foam easily.
* Does lateh has a wet coulping or brake? Probably not. I am curious of material choice if it has a wet coupling.

Pekka

Edgwick one:
Yes has a brake and a clutch but no pump splash lube

Howder1951:
Copied from the original thread regarding the headstock lubrication :
Hope this adds a degree of clarity.

Hello everyone, oils are one of my favourite topics. when i was dealing with the rep for our steel mill I asked about lathes and he said that is easy, hydraulic oil 68 cst viscosity. Explanation: hydraulic oil  has a mild antiwar additive and lathes are typically lightly loaded. The more additive in an oil the quicker it will degrade from the additives = impurities. Also like someone had mentioned, some EP (extreme pressure) gear additives are not completely compatible. Generally, this information will conform with the original manufacturers recommendations .  Motor oil is an accepted alternative to hydraulic oil where availability is an issue. A higher viscosity will give a thicker oil film and more protection, but the cost is heat generation and resistance, a lathe gearbox is typically over engineered for accuracy reasons, hence the light loading.
Happy machining my friends.

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