深圳市金昌泰润滑油有限公司

美孚全合成航空润滑脂 (Mobilgrease 28)
产品介绍:最高的性能表现、抗磨、宽温，结合了聚烯烃（PAO）合成基础油独一无二的特性和有机金属粘土增稠剂的优点（无皂基）。硬度介于NLGI 1和2之间。宽温度应用范围，不含石蜡的合成基础油。低牵引系数，提供出众的低温泵送性，极佳的低温启动和低额定转速扭矩。可降低载荷滚动轴承的运行温度……
典型特性
产品名称 NLGI等级 增稠剂类型 粘度cSt(40℃) 粘度cSt(100℃) 颜色 目视 滴点,ASTM D2265 工作渗透试验，ASTM D 217
MOBIL GREASE 28 1.5 粘土 29 6 红色 310 295



Mobilgrease 28

Synthetic Aviation Grease



Product Description

Mobilgrease 28 is a supreme performance, wide-temperature, antiwear grease designed to combine the unique features of a polyalphaolefin (PAO) synthetic base fluid with an organo-clay (non-soap) thickener. Its consistency is between an NLGI No. 1 and No. 2 grease. It offers outstanding performance over a wide temperature range. The wax-free nature of the synthetic base fluid, together with its high viscosity index compared to mineral oils, provide excellent low temperature pumpability, very low starting and running torque, and can help reduce operating temperatures in the load zone of rolling element bearings.


The clay thickener gives Mobilgrease 28 a high dropping point value of around 300ºC, which provides excellent stability at high temperatures. Mobilgrease 28 resists water washing, provides superior load-carrying ability, reduces frictional drag, and prevents excessive wear. Tests show that Mobilgrease 28 lubricates effectively rolling element bearings under conditions of high speeds and temperatures. Mobilgrease 28 has also shown excellent ability to lubricate heavily loaded sliding mechanisms, such as wing flap screw jacks.


For more than 30 years, Mobilgrease 28 has been the multi-purpose grease of choice for military and related aviation applications, worldwide.



Features and Benefits

A particular requirement of aviation greases is the need to resist high temperature stresses, while providing excellent starting and low torque at low-temperature. To meet this combination of needs ExxonMobil product formulation scientists chose proprietary synthetic base oils for Mobilgrease 28 because of their low volatility, exceptional thermal/oxidative resistance, and superb low-temperature capability. Formulators chose specific thickener chemistry and a proprietary additive combination which helps maximize the benefits of the synthetic base oils.

Mobilgrease 28 meets the requirements of key military and commercial aviation specifications and has built up a superb reputation for performance and reliability among users around the world.

Mobilgrease 28 provides the following advantages and potential benefits:

Features
Advantages and Potential Benefits
High viscosity index (VI) synthetic base stock with no wax content
Allows wide operating temperature range - outstanding high and low temperature performance.
Provides thicker fluid films protecting against wear of equipment parts operating at high temperature.
Causes low resistance during start-up at very low temperatures
Excellent protection against wear and corrosion
Superb bearing protection and helps extend bearing life and reduce bearing replacement costs
Extreme-pressure protection characteristics
Avoids excessive wear, even under shock load
High thermal/oxidative stability
Long relubrication intervals
High resistance to water washout
Maintains excellent grease performance in adverse weather and other water-exposure conditions

Applications

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 wher 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 wher superseded specifications MIL-G-81322 (WP), MIL-G-7711A, MIL-G-3545B, and MIL-G-25760A are recommended.

Mobilgrease 28 is also recommended for industrial lubrication, including sealed or repackable ball and roller bearings wherver 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 wher oscillatory motion, and vibration create problems.

Mobilgrease 28 is qualified by the U.S. Military under Specification MIL-PRF-81322, General-Purpose, Aircraft, and Specification DOD-G-24508A (Navy) for shipboard auxiliary machinery. It is a U.S. Military Symbol WTR and NATO Code Number G-395 grease.



Specifications and Approvals

Mobilgrease 28
Is Approved Against
Quality Level
MIL-PRF-81322G
X

DOD-G-24508A, Amendment 4

X
NATO G-395
X




Typical Properties





Health and Safety

based on available toxicological information, this product is not expected to produce adverse effects on health when used and handled properly.



40 x 390 g (13.7 oz) Cartridges

4 x 2.0 kg/4.4 lb Can

16 kg/35.2 lb Pail

50 kg/110.2 lb Keg

174 kg/383.6 lb Drum