Probably the right forum.
At work, I look after a half dozen voith fluid couplings, each transferring around 9000 shaft horsepower.
The oil temps are high, as the plant cooling water is struggling in the current high temps. Working oil temps are 90 degrees C plus. (Rule of thumb is that every 10 over 80 degrees halves oxidation resistance)
The oil (Bartran HV32) looks dark, smells like half burned ATF, and I desperately want to switch to hydrocracked because of the operating temps.
But the RBOT tests read 150mins time after time (baseline around 250-300), indicating oxidation isn't an issue. Wear is good (herringbone gearsets help). The things aren't clagging up their hydraulics.
What gives ?
How can I justify changing to "better" oil, when the old stuff looks and smells like a problem, but tests OK ?
Guess I'll have to find something else to play with. Anyone good with grease lubricated 10" diameter roller bearings ?
At work, I look after a half dozen voith fluid couplings, each transferring around 9000 shaft horsepower.
The oil temps are high, as the plant cooling water is struggling in the current high temps. Working oil temps are 90 degrees C plus. (Rule of thumb is that every 10 over 80 degrees halves oxidation resistance)
The oil (Bartran HV32) looks dark, smells like half burned ATF, and I desperately want to switch to hydrocracked because of the operating temps.
But the RBOT tests read 150mins time after time (baseline around 250-300), indicating oxidation isn't an issue. Wear is good (herringbone gearsets help). The things aren't clagging up their hydraulics.
What gives ?
How can I justify changing to "better" oil, when the old stuff looks and smells like a problem, but tests OK ?
Guess I'll have to find something else to play with. Anyone good with grease lubricated 10" diameter roller bearings ?