Mobil Vactra No. 3 is a high quality mineral based lubricant that is used in machine tool slideways. Vactra is a line of Mobil Lubricants that are used in a variety of applications in machining operation. Their No. series are lubricants used in precision machine tools Slideways due to their resistance to "Stick-Slip" in linear bearings as well as their outstanding separability from aqueous coolants. No. 3 represents the thickness of the oil which is an International Standards Organization Viscosity Grade (ISO VG) 150.
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