Product Overview
For many years MIL-PRF-23699 approved engine lubricants were employed in helicopter gearboxes, ensuring a common lubricant for both engines and transmission systems. More recently, high-load-carrying oils have been evaluated and found to offer advantages over conventional-load-carrying MIL-PRF-23699 oils. These higher-load-carrying oils, complying with specification DOD-PRF-85734, were originally intended only for engine applications. The two MIL spec oils are thus of identic
Key Attributes
A purpose designed lubricant with a viscosity of 9 cSt @ 100ºC and 12,700 cSt @ -32ºC
Excellent load carrying and antiwear performance
Excellent shear stability
Good corrosion resistance
Good elastomer compatibility
Greater inter-gear film thickness
High temperature stability
Multiple tests have been completed in bearing and gearbox rigs and flight evaluations, culminating in the NATO standard (AIR STANDARD ACS 4035) for a 9-cSt advanced helicopter gearbox lubricant.
Product Identity
| Chemical name | Lubricants |
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Applications
Application areas documented for this product grade.
Aviation turbine oil (ato)
Helicopter oil
Technical Documents & Source References
No technical PDF is referenced in the source record for this product.