Way oil for bridgeport mill

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What oil should I use for milling?
What is way oil?
Is a Bridgeport mill 3 phase?

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" Way Oil" is a special oil, unlike any other oil.
First, it has NO sulfur. Sulfur is a great lubricator, as it prevents galling.
When you look at Pipe Cutting Oil, the almost black oil used in pipe threading, you will note that it has Sulfur, you can smell it and it makes all cutting operations a breeze, as far as preventing galling or welding.
There is a BIG problem with Sulfur....it stains iron...look at any of the old turret lathes and they are black. You don't want that. Even Automobile motor oils can have some level of sulfur. Way Oil will not stain your ways and they stay pristine .

Second, Way oil has a "tacifier", which makes it stick ( Tacky) to the ways and not run off, or drain off.
You can oil your lathe and it will be there a week ( or more) later. Regular oils do not have tacifiers.

Third, is the most important function of way oil !
It prevents "Stick-slip"
Stick slip, is what happens when you try to sneek up on a cut. lets say you are facing a round piece in the lathe. You miked it's length, and it is 3.002 long and you want it EXACTLY 3.000"
Beware of stick slip !. You may have the spindle off, and run your tool up and touch the part.
Great...you think.. I will start are remove the .002 . You start the lathe and come up to the part and as you start to turn your handwheel, it seems very hard so you put just a bit more torque in the wheel and suddenly you jump .004" into the part. Bang , you lost it.....Why...Stickslip !
When you move your carriage, you may think its fine after oiling buts its not if it has the wrong oil !
Think of your ways as two steel plates. Put marbles between them, and wait a day, and then move the top plate. it rolls like nothing....we call that "no Stick -slip".
Now put some very hard rubber balls between the plates. The top plate moves almost as easy as the marble. But let it sit for a day, and when you push it, it resists moving because the balls have taken a "set". then when you do get it to move, it becomes very erratic and jumpy..
This is the reason that Sunoco 1180 was so good for many,many years.
No other oil could match it in stick-slip prevention and thats what Cinncinatti Milicron focused on.

The last thing is that Way Oil should not have"waxes" or at least minimise them . Wax is great as it helps all of the above needs for way lubrication.
It has a huge drawback, it plugs oil passages.
Cheap wayoils will use wax. As long as you are not using it in a system oiler, you should be Ok but ????

Hope this helps you understand why the proper oil is helpful. Any oil is better than none is a true statement, but the right oil not only protects your investment, but can actually make you a better machinist because you do not have stick-slip !

Rich

Last edited by Rich_Carlstedt on Sat May 15, 2010 3:43 pm, edited 1 time in total.

Kenosha Reuse Discussion Board > ZION, IL > Bridgeport milling machine mobil way oil, spindle oil

Everyone KNOWS that you DON'T use motor oil for lubricating the ways or spindle of your lathe or mill.
Motor oil has emulsifiers (detergents) that keep contaminants suspended in the oil, (great for your car, bad for your lathe) . Cars have filters, lathes don't. Motor oil is way too thick for spindle oil, anyway. This is especially bad news for your lathe that has spindles that ride directly in cast iron headstocks. Using the wrong lubricant in your spindle can be a real bad choice. Mobil Velocite #6 Spindle Oil oil is a premium product primarily designed for the lubrication of high-speed spindles in machine tools. Most machine tool manufacturers recommend this oil (or "equivalent") for spindle lubrication.
Mobil Velocite oil HAS NO EQUIVALENT.
Motor oil (or even 90W) won't stick to the ways like WAY OIL
Way oil is engineered to STICK TO the ways of your machine, unlike motor oil which will drip off pretty rapidly. Motor oil won't do you much good if its dripping on the floor. The best place for lube is between the saddle and ways of your lathe, or between the table and knee of your mill. The metal-wetting and adhesive agents of Mobil Vactra Way Oil form uniform films that resist squeezing from way surfaces while the machine is not in operation. The manufacturers of your nice South Bend lathe, Bridgeport mill, or Jet surface grinders (and others) don't recommend this as lubricant because they want their stuff to look like junk in a years time. They recommend it BECAUSE ITS THE BEST!
If theres a better lube than VACTRA , I haven't seen it.
In 8 OUNCE dispenser top bottles.:
ONE 8 ounce bottle of Mobil Velocite #6 Spindle Oil,
and ONE 8 ounce bottle of Mobil Vactra #2 Way Oil.
info(at)BLUECHIPMACHINESHOP(dot)COM

What oil should I use for milling?

We recommend the use of Mobil DTE Oil Heavy/Medium to replace both Vitrea oils, unless you need a slightly thicker oil for the gearbox, in which case use DTE Heavy/Medium in all areas except for DTE Heavy in the gearbox.

What is way oil?

Way oil, or way lube, is a type of hydraulic oil. Hydraulic oils can have additives mixed in, such as tackifiers, to make the way oil stick to surfaces. The tackifier additive in way oil is ideal for vertical machine parts such as slideway systems. Friction in the machining process requires special attention.

Is a Bridgeport mill 3 phase?

On the Bridgeport mill at work, the power feed motor,(X only ), coolant pump, lights and digital readout all come from a single phase supply. The 3phase is only for the spindle motor.