I have just acquired a DM45 NC mill. What type oil is used in the spindle gear box? Does it also oil the spindle bearings?
This machine is probably 20 years old and I would like to service it before running it. Any suggestions or links to manuals and documentation would be appreciated.
Ajax cnc DM45NC
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Re: Ajax cnc DM45NC
That machine is a Top Tech DM45. Similar to a Rong Fu - 45.
Rong Fu manual says to use ISO68 oil but I am not sure exactly what that means.
You want something that resists foaming. Do these gear heads have yellow metals in them? Yellow metals means you shouldn't use modern 75w-90 differential oil with sulfur in it. A Gear oil designed for a manual car transmission would be better as these are yellow metal safe to protect the synchronizes.
https://www.hobby-machinist.com/threads ... oil.40046/
Rong Fu manual says to use ISO68 oil but I am not sure exactly what that means.
You want something that resists foaming. Do these gear heads have yellow metals in them? Yellow metals means you shouldn't use modern 75w-90 differential oil with sulfur in it. A Gear oil designed for a manual car transmission would be better as these are yellow metal safe to protect the synchronizes.
https://www.hobby-machinist.com/threads ... oil.40046/
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Re: Ajax cnc DM45NC
Thanks. I'll search for information on the two similar machines. ISO 68 I think is what precision Mathews uses. I'll keep searching for the correct oil and a manual that explains the gizmos on the spindle gearbox.
Re: Ajax cnc DM45NC
ISO68 would be common way lube oil (e.g. Mobil Vactra #2).
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Re: Ajax cnc DM45NC
ISO68 is actually a viscosity rating. For a gearbox, I would use something like Mobil Mobilgear 600 XP 68—Mineral Base Oil, or Mobil SHC 626—Synthetic Base Oil. Those are both machine gear oils. Mobil Vactra #2 and Vacuoline 1409 are ISO68 slide and way oils with adhesion modifiers, while DTE 26 is an ISO68 hydraulic oil for machines.
Cheers,
Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
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Re: Ajax cnc DM45NC
Thanks a bunch. That helps a lot