Anti-wear (AW) Agent

Additive that is active in preventing damage caused by occurrence of solid phase welding between sliding surfaces without local surface melting.

Purpose is to prevent abrasion and metal to metal contact.

Chemical compound imparting extreme pressure characteristics to a lubricant with the objective of reducing wear under conditions where rubbing or sliding accompanies high contact pressures, as in heavily loaded gears.

The resistance of a lubricating grease to adverse effects due to the addition of water to the lubricant system

Water resistance is described in terms of resistance to washout due to submersion.

Ability of a lubricant to resist oxidation and deterioration resulting from high temperatures and / or exposure to air.

Purpose is to prolong the life of a grease.

Maximum load a lubricant will withstand without failure due to breakdown of the lubricant film, as determined on the Timken EP Lubricant Tester. In other words measure of the extreme pressure properties of a lubricant. Timken OK load is the heaviest load that can be carried without scoring.