is measure of the extreme-pressure properties of a
lubricating oil (see EP oil). The test utilizes a
Timken machine, which consists of a stationary block pushed upward, by means
of a lever arm system, against the rotating outer race of a roller
bearing, which is lubricated by the product under
test. The test continues under increasing load (pressure) until a measurable
wear scar is formed on the block. Timken OK load is the
heaviest load that a lubricant can withstand before the block is scored.
Also see scoring.
Application
Notes:
