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Royco® 27 is a multipurpose instrument and airframe grease that meets MIL-PRF-23827 Type I specifications.
Product type: Gear bearing grease
Penetration worked, mm: 288
Penetration unworked, mm: 297
Starting low-temp torque, Nm (@ −73°C): 0.62
Running Low-temp torque, Nm (@ −73°C): 0.04
Color: Light tan
Primary Chemistry:
Ester + Lithium Stearate thickener
Royco® 27 is an advanced synthetic ester-based grease with a lithium stearate thickener and robust additive packages. Royco® 27 imparts corrosion, oxidation, and rust inhibition for extreme-pressure, anti-wear, demanding applications. Royco® 27 is designed for high-load aircraft actuators, gears, and high-speed bearings, as well as instruments over broad temperatures.
Ineffective rust or corrosion protection from grease
Loss of oil or lubrication protection from grease migration
Poor lubrication at extreme cold or hot temperatures
Royco® 27 is a high-performance grease engineered for a wide variety of aircraft applications, including but not limited to the following:
Aircraft instruments
High-speed bearings and gear bearings
Actuator screws
Highly loaded gears and actuator motors
In addition, Royco® 27 is effective from −73°C to 121°C. This synthetic grease is a Type I grease identified by NATO code number G-354 and Joint Service Designation XG-287.
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