Mobil SHC PM Series

Mobil SHC PM Series

Paper Machine Lubricants

Mobil SHC PM Series products are superior performance synthetic lubricants specifically designed for the most demanding industrial paper machine circulating systems. The Mobil SHC PM Series oils are formulated to provide outstanding protection of gears and bearings operating under the most severe conditions. They have very low pour points and a naturally high viscosity index (VI) which helps ensure good low temperature start-up while maintaining excellent viscosity characteristics at very high temperatures. The fluids are very shear stable and maintain viscosity control even when subjected to severe mechanical shear in heavily loaded bearings and gears. Their low traction coefficient and high viscosity index can help result in lower energy consumption and reduced component operating temperatures.

To develop the latest Mobil SHC technology for Mobil SHC PM Series oils, ExxonMobil product formulation scientists chose select base oils because of their exceptional thermal/oxidative resistance potential and combined them with a balanced additive system, which complement the inherent benefits of the base oils to attain high performance standards. These fluids permit the use of higher steam pressures, temperatures and machine speeds common in high output paper machines and calendar rolls. Their outstanding hydrolytic stability and filterability assure excellent performance in the presence of water and the ability to retain effective filtration even at very fine filtration levels. They readily separate water and retain their colour characteristics for extended periods of operation under severe conditions.

Features and Benefits

The Mobil SHC PM Series oils represent a technological advance in paper machine lubrication. Their excellent performance capabilities in the areas of wear protection, enhanced oxidation stability, chemical stability, effective rust and corrosion protection, colour stability, and filterability not only prolong maintenance service intervals but can improve machine performance and increase production capacity. This can result in less required maintenance and longer equipment life.

Features Advantages and Potential Benefits
Excellent Wide Temperature Performance Easier start-up and improved lubrication at cold starts
Extra margin of protection at elevated temperatures
Better control of feed rates
Exceptional Wear Protection Improved bearing and gear performance
Outstanding Oxidation and Thermal Stability Longer oil life
Lower filter replacement costs
Cleaner systems
Reduction of system deposits
Effective Water Separation Properties Allows easier removal of water
Reduces formation of undesirable emulsions in systems
Low Traction Coefficient Reduced energy consumption
Lower operating temperatures
Reduced wear
Excellent Filterability Keeps oil lines and flow control mechanisms free of deposits
Improved oil flow and cooling performance
Lowers filter replacement costs
High Level Rust and Corrosion Protection Protects gears and bearings in wet environments
Provides vapour space protection for areas of bearing and gear cavities above normally wetted surfaces

Applications

  • Lubrication of severe industrial paper machine circulating systems
  • Application involving circulation systems operating over a wide temperature range such as calendar rolls
  • Systems that must be started and brought on line quickly
  • Circulation systems lubricating gears and bearings

Typical Properties

Mobil SHC PM Series 150 220 320 460
ISO Viscosity Grade 150 220 320 460
Viscosity, ASTM D 445        
cSt @ 40º C 158 225 325 465
cSt @ 100º C 18.9 25.6 34.7 44.8
Viscosity Index, ASTM D 2270, typical 124 127 130 137
FZG 4-Square Load Support, DIN 51354, fail stage 11 11 11 11
Rust Characteristics, Proc A and B, ASTM D 665 Pass Pass Pass Pass
Hydrolytic Stability (Acid Number Change),ASTM D 2619, mgKOH/g 0 0 0 0
Copper Strip Corrosion, 24h @ 100º C, ASTM D 130, rating 1B 1B 1B 1B
Demulsibility, minutes to 40/40/0, 82º C 15 25 30 30
Pour Point, ºC, ASTM D 97, max -39 -36 -33 -27
Flash Point, ºC, ASTM D 92, min 220 220 220 220
Specific Gravity 15º C/15º C, ASTM D 1298 0.857 0.863 0.865 0.874

Health and Safety

Based on available information, this product is not expected to produce adverse effects on health when used for the intended application and the recommendations provided in the Material Safety Data Sheet (MSDS) are followed. MSDS’s are available upon request through your sales contract office, or via the Internet. This product should not be used for purposes other than its intended use. If disposing of used product, take care to protect the environment.

Remark

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.