Machine tool cutting fluid dripping

Our Mobil Vactra™ Oil Numbered Series lubricants are premium-quality slideway oils specifically designed to meet the requirements for accuracy, aqueous coolant separability and equipment protection of precision machine tools.

These premium slideway lubricants are formulated to provide exceptional frictional properties on a wide variety of materials, including steel-on-steel and steel-on-polymer, reducing stick-slip and chatter. Mobil Vactra Oil Numbered Series slideway oils can also:

  • Enhance machine productivity
  • Improve machining accuracy
  • Enhance surface finish
  • Reduce deterioration of sliding surfaces

Product series information

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Technical resources

  • Machine tool cutting fluid dripping
    Way oil and coolant separability | Mobil™

    Coolant separability is essential for maintaining the performance of your slideway lubrication. Learn more about separability testing so you can maximize the performance of your operation.

    Technical topics

  • Slideway lubrication stick slip effect
    Slideway lubrication stick-slip effect | Mobil™

    In a metal removal process, loss of frictional control can cause inaccuracies that ultimately result in lost machine tool productivity. Learn how to avoid this.

    Technical topics

Features and Benefits

The Mobil Vactra Oil Numbered Series has been developed and specifically designed to provide an extra margin of machinery protection by satisfying the stringent demands of slide ways. The oils exhibit excellent lubricity and load-carrying performance contributing significantly to improving the production of quality parts. The Mobil Vactra Oil Numbered Series provides separability from many water and aqueous coolants reducing the potential negative effects of cross contamination which helps to enhance the service life and performance of both the lubricant and coolant.



Advantages and Potential Benefits

Controlled Frictional Characteristics

Helps eliminate stick slip; allows consistently accurate machining

Multi-material Capabilities

Suitable for a wide range of way material combinations allowing for product consolidation

Water and Aqueous Coolant Separability

Helps improve the life and performance of many aqueous coolants


Prevents removal of lubricant from critical surfaces

Long Term Rust and Corrosion Protection

Helps reduce the deterioration of sliding surfaces in the presence of water and aqueous coolants



Mobil Vactra Oil Numbered Series products are recommended for the lubrication of machine tool slideway systems. They are designed for use with combinations of cast iron, steel and non-metallic way materials. Mobil Vactra Oil Numbered Series may be applied by hand, forced-feed lubricator or in flood application by circulation system.

     •  Mobil Vactra Oil No. Series of products are suitable for use in applications that require Fives Cincinnati specifications P53, P47, and P50.

     •  Mobil Vactra Oil No. 1 and No. 2 are recommended for horizontal slideways on small to medium size machine tools. They are also suitable for circulating application in large machines and as a moderate duty hydraulic fluid.

     •  Mobil Vactra Oil No. 3 and No. 4 are normally recommended for large machines where way pressures are high and good precision is required. They are also recommended for vertical and inclined slideways where drain-down can be a problem and for moderate service machine tool gear drive mechanisms.

     •  Mobil Vactra Oil Numbered Series can be used for lubrication of ball screws, linear guides, headstocks, translating screws.

     •  Mobil Vactra Oil Numbered Series is recommended for applications where oil contamination of the aqueous coolants shortens coolant batch life.


Specifications and Approvals

This product meets or exceeds the requirements of:

NO. 1

NO. 2

NO. 3

NO. 4

DIN 51502 CGLP






Properties and Specifications


NO. 1

NO. 2

NO. 3

NO. 4


ISO 32

ISO 68

ISO 150

ISO 220

Copper Strip Corrosion, 3 h, 100 C, Rating, ASTM D130





FZG Scuffing, Fail Load Stage, A/8.3/90, ISO 14635-1





Flash Point, Cleveland Open Cup, °C, ASTM D92





Kinematic Viscosity @ 40 C, mm2/s, ASTM D445





Pour Point, °C, ASTM D97






Health and Safety

Health and Safety recommendations for this product can be found on the Material Safety Data Sheet (MSDS) @