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Royco® 27 is a multipurpose instrument and airframe grease that meets MIL-PRF-23827 Type I specifications.
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.
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
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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