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Mobilgrease 28

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 -55º to 180ºC with appropriate relubrication intervals.

Quantity


recommended operating temperature  -55º to +180ºC
NLGI Grade 1.5
Thickener Type Clay
Color, Visual Red

Mobilgrease 28 is a supreme performance, high temperature, antiwear 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 clay thickener provides excellent stability at high temperatures and Mobilgrease 28 has a high dropping point value of 260ºC. . In addition, it resists water washing, provides superior load-carrying ability, reduces frictional drag, and prevents excessive wear. Tests show that Mobilgrease 28 prevents friction oxidation (fretting) and lubricates rolling element bearings under conditions of high speeds and temperatures. It has also shown superior ability to lubricate heavily loaded sliding mechanisms, such as wing flap screwjacks.  Its consistency is between an NLGI No. 1 and No. 2 grease.

Mobilgrease 28 meets the quality level  of U.S. Military Specification MIL-G-81322E, General-Purpose, Aircraft, and is approved against U.S. Military Specification DOD-G-24508A (Navy) for shipboard auxiliary machinery. It can be designated U.S. Military Symbol WTR and NATO Symbol G-395.

Mobilgrease 28 has been the grease of choice for military and related applications, worldwide, for more than 30 years since its introduction. This leading product is based on the synthesized PAO base stocks that were pioneered by the R&D arm of our company resulting in step-out performance not only in grease but in many fluid lubricants, too.

Mobilgrease 28 meets the quality level of military specifications MIL-G-81322D for wide temperature range aviation service and approved under DOD-G-24508A for shipboard service.  Specific military and civil aviation applications include:
-Landing wheel assemblies
-Control systems, screwjacks, servo devices, actuators, sealed-bearing motors and oscillating bearings
-Helicopter rotor bearings on aircraft and on naval shipboard auxiliary machinery
-It also can be used where superseded specifications MIL-G-81322 (WP), MIL-G-7711A, MIL-G-3545B, and MIL-G-25760A may be called for

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
-High-speed miniature ball bearings, and bearing situations where oscillatory motion, vibration, and fretting create problems.

Specifications & Approvals

Meets the following industry and builder specification: Mobilgrease 28
Quality Level USDA H-2 X
Has the following builder approvals
DOD-G-24508 A Amendment 1 X
Also recommended for use in applications requiring
MIL-G-81322(WP) X
MIL-G-7711A X
MIL-G-25760A X
Military
Approved against Mil-G-81322E quality level X

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