Circulating Oils

Product Description

Mobil Vacuoline 500 Series

Mobil Vacuoline 500 Series are extra high performance heavy duty circulating oils specifically designed to meet the critical requirements of high speed No-Twist Rod Mills, manufactured by Morgan Construction Company and Danieli.  They are also suitable for the rolling mill circulation systems of primary and mini-mill bearings.  They are formulated from high quality base stocks and a proprietary additive system to provide enhanced film strength, antiwear and anti-scuff properties.

The oils have good wettability and provide extra oil retention and thin film protection against rust and corrosion on gears, shafts, bearings, adjusting screws and all housing sections.  Mobil Vacuoline 500 Series have excellent antiwear properties that eliminates scuffing and scoring of high-speed  gearing, particularly important in non-ferrous rod mills where the gears are more heavily loaded. The Mobil Vacuoline 500 Series possess good demulsibility that is retained under conditions of severe water contamination.

Mobil Vacuoline 500 Series products enjoy strong support from equipment builders, and their exceptional performance over many decades, have made them the lubricant of choice of many mill operators, world-wide



  • Mobil Vacuoline 500 Series lubricants are recommended for use in both ferrous and non-ferrous Morgan No-Twist Rod Mills and Morgoil back-up roll bearing systems.  For optimum performance, appropriate viscosity oils should be selected according to the loading and for operations without hydrostatic lift
  • Mobil Vacuoline 525 is recommended for service in the single circulating oil system of high-speed rod mills.  Such mills operate at speeds greater than 105 m/sec, with speeds of over 120 m/sec being projected in the future.  These mills operate under severe loads in the presence of continuous water contamination.  The balanced formulation of Mobil Vacuoline 525 enables extended trouble-free rod production to be achieved
  • The remaining grades in the Mobil Vacuoline 500 Series are recommended for Morgan No-Twist Rod Mills, which have two lubrication systems. The higher viscosity oils are used in the roughing stands, while the lower viscosity grades are used in the higher-speed finishing stands


Product name ISO VG
Mobil Vacuoline 525
Mobil Vacuoline 528
Mobil Vacuoline 533
Mobil Vacuoline 537
Mobil Vacuoline 546
Mobil Vacuoline 548




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