Product Description

The Mobil Velocite Oil Numbered Series oils are premium performance products primarily designed for the lubrication of high-speed spindles in machine tools. They are also used in some critical hydraulic, circulation systems and air line oilers where the appropriate viscosity grade is selected. They are formulated from select high-quality, low viscosity base oils and additives that impart good resistance to oxidation and protection from rust and corrosion. They possess very good resistance to foaming and separate readily from water.

Features and Benefits

The Mobil Velocite Oil Numbered Series provide exceptional lubrication of close-tolerance bearings which helps keep the bearings running cool and helps maintain the precision required by many of today’s critical machine tools. Although the Mobil Velocite Oil Numbered Series oils were designed for spindle bearings, they exhibit the required properties to function as low pressure hydraulic and circulating oils as long as the proper viscosity is selected. This feature can help minimise inventory costs and reduce the potential for product misapplication.

Features Advantages and Potential Benefits
Good Oxidation Resistance Helps reduce critical deposit formation

Improves oil life

Very Good Rust and Corrosion Protection Improves equipment life

Provides increased precision long-term

Effective Water Separation Resists emulsion formation

Keeps moisture out of critical lubrication areas

Allows easy removal of moisture from system reservoirs


•  High speed spindle bearings in machine tools and equipment where high speeds and fine clearances are involved

•  Precision grinders, lathes, jig borers and tracer mechanisms

•  Mobil Velocite Oil No 3 is recommended for “zero clearance” type spindle bearings which operate with extremely close clearances

•  For sleeve type spindle bearings having greater clearances, the choice of viscosity depends on the relation between clearance and spindle speed

•  Low pressure hydraulic systems where appropriate viscosity is selected

•  Air line oilers (Mobil Velocite Oil No. 10)

•  For some sensitive instruments such as telescopes, laboratory equipment, etc.

Properties and Specifications

Property NO 3 NO 4 NO 6 NO 8 NO 10
Grade ISO 2 ISO 10 ISO 15 ISO 22
Copper Strip Corrosion, 3 h, 100 C, Rating, ASTM D130 1A 1A 1A
Copper Strip Corrosion, 3 h, 60 C, Rating, ASTM D130 1A 1A
Density @ 15 C, kg/l, ASTM D4052 0.802 0.822 0.844 0.854 0.862
Flash Point, Cleveland Open Cup, °C, ASTM D92 84 102 180 194 212
Kinematic Viscosity @ 100 C, mm2/s, ASTM D445 2.62 3.28 4
Kinematic Viscosity @ 40 C, mm2/s, ASTM D445 2.1 4.83 10 15 22
Pour Point, °C, ASTM D97 -36 -15 -15 -9 -30
Rust Characteristics, Procedure A, ASTM D665 PASS PASS PASS PASS PASS
Total Acid Number, mgKOH/g, ASTM D974 0.06 0.06 0.06 0.06 0.1

Health and Safety

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


It cannot be guaranteed that the product information given above is up to date. For the latest version of the Product Data Sheet we refer to the product library of ExxonMobil.