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Cleanliness of oil and filtration (english)


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Functions and purpose of oil.
Contaminations and consequences.
Contaminations ISO code 4406.
Criteria for Oil sampling reports.

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Cleanliness of oil and filtration (english)

  1. 1. Cleanliness of oil and Filtration Contamination classes ISO 4406 Function and purpose of oil Contaminations and consequences Gears and rollers Off-line filter systems
  2. 2. Contamination classes ISO 4406 Remark: each class doubles/halves the amount of particles.
  3. 3. Function and purpose of oil •Transmitter (hydraulic pressure=energy) • Lubrication (countering friction) • Cooling (heat conveyor) • Dispersion (carrier of contaminations) • Conservation (preventing corrosion)
  4. 4. Contaminations and consequences Contaminations: Consequences: • Water (ingress, condensation, leakage) • Loss of lubricating ability • Dirt (ingress, aeration) • Diminished dispersion • Metals (wear and tear) • Isolation and sticking of • Resin (thermal load) components • Oxidation • Corrosion (catalytic results of contaminations)
  5. 5. Criteria for oil sampling reports •Viscosity (cSt = centiStoke) • Water content (ppm: parts per million) • T.A.N. (Total Acid Number) • Contamination class acc. to ISO 4406:99 (particle counting of 4, 6 and 14 micron) • Spectral analysis (e.g. additives in oil) • Particle identification
  6. 6. Test membranes Test membranes and ISO code 4406.
  7. 7. Basic principle of gears ExxonMobil: Mr. Per Holm> Gear seminar, Svendborg, May’02 high degree of sliding at mesh exit pure rolling only on the pitch line high degree of sliding at start of mesh
  8. 8. Example of gear abrasion Crest Root Abrasion of gear at the initial phase.
  9. 9. Bearings and rollers Particles (2-5 micron) within dynamic tolerance of a mechanical part. “Grinding” of particles on the surfaces creating micro-cracks and pitting, which are then prone to erosion.
  10. 10. Example of bearing abrasion(1) Grinding of particles between components.
  11. 11. Example of bearing abrasion(2)
  12. 12. Filter fundamentals ‘In-line’: using the pressure or flow of the system such as suction-, pressure-, return- and bypass filters. ‘Off-line’: from the tank through the filter and back in the tank by means of separate pump with constant flow.
  13. 13. CJC Filter systems TM Specifications and strong points: 1. Filter pore size of 0.85 micron. 2. Large contaminations holding capacity, for example B 27/27 holds upto 2 litres of water and 4 litres of particles. 3. The cellulose material adsorbs resins. 4. Several separation technologies: Absorption, Separator-coalescing, Vacuum and Desorption (extraction). 5. World wide service, establishment and distributors ( 6. Established goodwill, knowledge and experience in oil filtration. 7. Specialized in ‘off-line’ systems. 8. Reliable and users friendly.
  14. 14. CJC Filter units CJC FineFilter HDU 27/54 GP-EPT CJC FineFilter HDU 27/27 P-EM CJC FineFilter HDU 27/27 P CJC FilterSeparator PTU2 27/27 PV-EPW CJC VacuumFilter V30 CJC Desorber D38 CJC FineFilter HDU 15/25 PV