opinion on thru spindle coolant

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billystein

Aluminum

Joined

Oct 10, 2007

Location

simi valley,ca.

• Feb 13, 2008

• #1

Hi guys,

looking at used vf3-sm. does anyone have any comments on the thru the spindle coolant system. I would love to have this coolant otion but are there any long term downsides.
any opinions about the side mount tool changer would be appreciated too.

thanks,

billy

 

fmari --MariTool-

Titanium

Joined

Nov 15, 2005

Location

Illinois

• Feb 13, 2008

• #2

It is decent. I have 2 HAAS machines with the option. It seals by 2 carbide disks being pushed together by 4.5-7 psi of pressure from the drawbar piston. If you are using the TSC option make sure you pay attention to your coolant concentration or else you will be buying carbide disks every month. The carbide disks get lubricated from the coolant so if you run your coolant lean you are asking for trouble. Also if you let the carbide disks get too old before replacing you get leakage and coolant spaying your spindle motor and bearings, a big no-no. If you get the option you will enjoy better drilling and tool life but be prepared for the maintenance and added costs.

 

P

psychomill

Titanium

Joined

Mar 12, 2005

Location

Silicon Valley, California... + other states & sev

• Feb 13, 2008

• #3

Carbide discs???? or ceramic? Most couplings are ceramic discs .... I'm not sure on the Haas though (we do them with 1000 PSI pumps).

A good practice to extend the life of your couplings..... Turn on the TSC first before you fire up the spindle.

 

fmari --MariTool-

Titanium

Joined

Nov 15, 2005

Location

Illinois

• Feb 13, 2008

• #4

Yes good point Psychomill, turn on TSC before turing on the spindle.
Yes they are carbide on the HAAS. Unless they changed it recently. I purchased quite a few so I would know, :-(

 

P

psychomill

Titanium

Joined

Mar 12, 2005

Location

Silicon Valley, California... + other states & sev

• Feb 13, 2008

• #5

I purchased quite a few so I would know, :-(

Click to expand...

... hehehe... been there, done that. And now that I think of it, there are some makes using carbide discs as well... I stand corrected....

 

Ox

Diamond

Joined

Aug 27, 2002

Location

Northwest Ohio

• Feb 13, 2008

• #6

Coolant on as a lube?

If so then not running TSC all the time would drastically reduce the life-span eh?

Or is this more of an issue of turning it on afterwards doo to the pcs mating at speed?

I hafta assume the latter, but curious minds eh?

-------

Shoot'm all - let GOD sort'm out in '08!
Ox

 

S

scrapbin

Aluminum

Joined

Sep 15, 2006

Location

albany ny

• Feb 14, 2008

• #7

side mount toolchanger opens up work area,get it

tsc + 80 gallon tank blows chips out,get it

get max rpm and extra memory if cutting surfaces

if sizing a machine to make parts that you are doing now you will wish later that
you got the next size bigger.

prewired for 4th axis if the used machine has it
you can always barrow,rent,lease a rotory or trunnion for that odd job

trust me,owner of a vf5,former owner of a 25 yr old cinncinati 5vc with 256,000 bytes
memory,150 inches feed rate,coolant that dribbled out when it wanted to work after refilling the tank when it leaked out all over the floor,good controler for it`s time though

 

B

billystein

Aluminum

Joined

Oct 10, 2007

Location

simi valley,ca.

• Feb 14, 2008

• #8

what a great forum

thanks guys.

it is great having a source of informed opinions.

billy

 

A

aamtoolman

Plastic

Joined

Feb 13, 2008

Location

Southern Oregon

• Feb 14, 2008

• #9

billystein,
Unless haas has changed someting, you can't (shouldn't) run TSC of you are drilling above 7500 RPM. I was told this by several people at Haas as well as our independent service man (who is Haas Certified). It also has this listed in our manual's Option Section.

Only ran into this as our 2000 VFOE was equipped with an optional 15,000 RPM spindle...

Don't know if this makes any influence on your decision, but the more info the better...

 

P

psychomill

Titanium

Joined

Mar 12, 2005

Location

Silicon Valley, California... + other states & sev

• Feb 14, 2008

• #10

Good point aamtoolman..... For the 1000PSI coolant, Haas will tell you to not run it at high rpm. Their stuff won't take it. On our machines, they said no more than 10k. I told them that was crap... build something better than. Another tech and service manager said, (reluctantly) no more than 12k if its a short burst.... whatever that means. But the spindle assy don't like it...

 

metal_twister

Cast Iron

Joined

Jan 5, 2005

Location

Houston

• Feb 15, 2008

• #11

carbide discs are mechanical seal faces lapped flat to a few light bands.

Tungsten carbide disc are NOT the right material for water based coolants.

Chlorides in water leach the nickle binders out of the TC material.
Breaking down the lapped faces causing leaks.

Ask Haas to supply silicon carbide seal faces.
They'll last forever.