Mobilgrease 28 is heavy duty grease. When it comes to airplane lubrications there is nothing quite like it. Whether it’s a high temperature (177ºC), a low tempature (-54ºC), or anything in between, you can be sure that it will not let you or your plane down. Mobilgrease 28 is a supreme performance, wide-temperature, anti-wear grease designed to combine the unique features of a polyalphaolefin (PAO) synthetic base fluid with an organo-clay (non-soap) thickener. The wax-free nature of the synthetic base fluid, together with its low coefficient of traction compared with mineral oils, provide excellent low temperature pumpability, very low starting and running torque, and can reduce operating temperatures in the load zone of rolling element bearings. The airplane grease is designed to resist water washing, provide superior load-carrying ability, reduce frictional drag, and prevent excessive wear, in addition to a superior ability to lubricate heavily loaded sliding mechanisms, such as wing flap screw jacks.
Mobilgrease 28 is designed for the lubrication of plain and rolling bearings at low to high speeds, and splines, screws, worm gears, and other mechanisms where high friction reduction, low wear, and low lubricant friction losses are required. The recommended operating temperature range is -54ºC to 177ºC (-65ºF to 350ºF) with appropriate relubrication intervals.
Mobilgrease 28 is recommended for use in landing wheel assemblies, control systems and actuators, screw jacks, servo devices, sealed-bearing motors, oscillating bearings, and helicopter rotor bearings on military and civil aircraft. Subject to equipment manufacturer approvals, it can also be used on naval shipboard auxiliary machinery and where superseded specifications MIL-G-81322 (WP), MIL-G-7711A, MIL-G-3545B, and MIL-G-25760A are recommended.
Mobilgrease 28 also is recommended for industrial lubrication, including sealed or repackable ball and roller bearings wherever extreme temperature conditions, high speeds, or water washing resistance are factors. Typical industrial applications include conveyor bearings, small alternator bearings operating at temperatures near 177ºC (350ºF), high-speed miniature ball bearings, and bearing applications where oscillatory motion, and vibration create problems.
Mobilgrease 28 is of quality level U.S. Military Specification MIL-PRF-81322, General-Purpose, Aircraft, and U.S. Military Specification DOD-G-24508A (Navy) for shipboard auxiliary machinery. It is a U.S. Military Symbol WTR and NATO Code Number G-395 grease.
U.S. Meets: MIL-PRF-81322G, DOD-G-24508A, Amendment 4
NATO Code: G-395