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Heavy loads

Heavy loads

Some mechanisms such as reducers, bearings, hoisting chains are subject to heavy loads. Several phenomena may occur :

  1. Fatigue (micro-pitting),
  2. Adhesive wear,
  3. Corrosion,
  4. Abrasion,
  5. Noise,
  6. Etc…

These different types of wear all occur due to the rupture of the protective lubricating film. An increase in load, linked to a rise in temperature, accelerates wear. The lubricant is in fact chased away from its contact areas (dry friction).


Extreme Pressure (EP) and Anti-Wear (AW) properties play a decisive role. Their function is to prevent and/or limit metal-metal contact so as to ensure friction in an “unctuous” regime.