Ajax cnc DM45NC

All things related to Centroid Oak, Allin1DC, MPU11 and Legacy products

Moderator: cnckeith

Post Reply
Jgeorge
Posts: 3
Joined: Wed Mar 31, 2021 12:47 pm
Acorn CNC Controller: No
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC12: No
CNC11: No
CPU10 or CPU7: Yes

Ajax cnc DM45NC

Post by Jgeorge »

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.
AcornJosh
Posts: 78
Joined: Tue Apr 17, 2018 8:58 am
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC11: No
CPU10 or CPU7: No

Re: Ajax cnc DM45NC

Post by AcornJosh »

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/
Jgeorge
Posts: 3
Joined: Wed Mar 31, 2021 12:47 pm
Acorn CNC Controller: No
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC12: No
CNC11: No
CPU10 or CPU7: Yes

Re: Ajax cnc DM45NC

Post by Jgeorge »

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.
cncsnw
Posts: 3763
Joined: Wed Mar 24, 2010 5:48 pm

Re: Ajax cnc DM45NC

Post by cncsnw »

ISO68 would be common way lube oil (e.g. Mobil Vactra #2).
tblough
Posts: 3072
Joined: Tue Mar 22, 2016 10:03 am
Acorn CNC Controller: Yes
Allin1DC CNC Controller: Yes
Oak CNC controller: Yes
CNC Control System Serial Number: 100505
100327
102696
103432
7804732B977B-0624192192
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No
Location: Boston, MA
Contact:

Re: Ajax cnc DM45NC

Post by tblough »

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.
Jgeorge
Posts: 3
Joined: Wed Mar 31, 2021 12:47 pm
Acorn CNC Controller: No
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC12: No
CNC11: No
CPU10 or CPU7: Yes

Re: Ajax cnc DM45NC

Post by Jgeorge »

Thanks a bunch. That helps a lot
Post Reply