[deadlykitten]

hello about the tank from behind the cnc, where the hydra oil is : i have to refill it at 2-3 months

it seems to short time ; way too short

i see nothing under the cnc

i never adventured so far when striping a lathe

should i take some tools and go investigate ? far as i know this tank is used for the "hydra cilinder" behind the chuck + "clamp on the turret / M203" kindly !

ps : i am not on oil guy !!!

[OkumaWiz]

You most likely have a leak somewhere. I'm guessing it is ending up in your coolant tank if there are no oil slicks on the floor. Chuck, tailstock, and turret are hydraulic. Start with the turret. It is used most often with indexing and would drain into the tank. Write a program that does nothing but index and watch for leaks running down the covers or around the body. If you are lucky it will just be a loose fitting, but could be a bad seal on the piston that does the curvic clamp/unclamp. Otherwise check hoses, connections, cylinders for leakage signs.

You should be able to run for years with no hydraulic loss since it is a sealed system.

Best regards,

[deadlykitten]

hello mr Wizard i did not thought that also tailstock is hydra : i guess the break is hdyra, like advancing until desired force is reached, than hydra break

dealer respond today, saying that he will send me some color liquid, thus to put it inside the tank to mix with the oil, so to observe better the leaks

also we had to power off the machines, because somebody was suposed to do some interventions at the big electric panel, and with this ocasion, an operator showed me an oil leak under the turret ... normally that place should be dry

i will see kindly !

[OkumaWiz]

You are correct that the C-axis brake is also hydraulic. Typically there are 2 of them. They use low pressure for c-axis feed cutting and high pressure for clamping by M146/7 c-axis brake. The dye should help to track the leak. I've also seen fluorescent dye for detection so as to not dye the machine to the naked eye and to detect the leak with a black light.

Happy tracking!

[deadlykitten]

You are correct that the C-axis brake is also hydraulic

hi mr Wizard actually i was refering to the brake of the tailstock, not of the C axis, and it really did not cross my mind that also C axis break is hydra

so i am not even close as sharp as you think i am

i find the leak today by mistake : an operator told me that the hydraulic tank from the back of the cnc does not operate the hydraulic cilinder, because there is another tank right under the cilinder

i explained that the tank under the hydra cilinder is for the mist for the bearings ( at least this is what i know ... ), and when i tried to show him, i observed the leak ... i took a key and tighten a screw : tadaaa i am glad it was that easy, because i was expecting to start striping the lathe kindly !