美孚宝力达EP2润滑脂 Mobil Polyrex EP 2

美孚宝力达EP2

Multi-purpose Grease

Product Description

Mobil Polyrex EP 2 is a shear-stable polyurea grease with excellent extreme-pressure (EP) and load-carrying characteristics. The

proprietary polyurea thickener system exhibits excellent resistance to oxidation and oil separation at operating temperatures as high as

350°F. With its outstanding high-temperature oxidation stability, load-carrying capability, shear stability, water resistance and wide

operating temperature range, Mobil Polyrex EP 2 is an excellent multi-purpose grease for a wide array of industrial and construction

applications.

Features & Benefits

EXTREME-PRESSURE PROTECTION AND THERMAL STABILITY

Mobil Polyrex EP 2 contains a proprietary extreme-pressure (EP) additive package that provides load-carrying capability without

degrading the thermal stability of the grease at high temperatures. Conventional sulfur- and phosphorus-base EP additives used in

other multi-purpose greases begin to oxidize rapidly at temperatures above 250°F. Mobil Polyrex EP 2, on the other hand, continues to

provide a high level of wear and extreme-pressure protection up to 350°F without rapid oxidation of the anti-wear or EP additives.

The outstanding high temperature lubrication life of Mobil Polyrex EP 2 is impressively demonstrated in the ASTM D 3336 grease life

test – with an average ASTM D 3336 life of 490 hours, 3 to 5 times better than the high-temperature lubrication life of competitive multi-

purpose lithium-base greases.

SUPERB SHEAR STABILITY

The proprietary polyurea thickener system in Mobil Polyrex EP 2 exhibits excellent durability and stability when subjected to a

mechanical shearing force. For example, in the ASTM D 217 cone penetration test, the consistency of Mobil Polyrex EP 2 changed by

approximately one NLGI grade after being worked for 100,000 strokes—similar to the performance of high-quality lithium-complex

greases, which are the benchmark for excellent shear stability. By contrast, competitive polyurea greases containing shear-unstable

thickener technology can soften by three NLGI grades under the same test conditions. Good mechanical shear stability is important in

roller bearing applications where excessive grease softening may lead to grease leakage or purging from the bearing.

EXCELLENT WATER RESISTANCE

The Mobil Polyrex EP 2 formulation is enhanced with water-resistant polymers that enable it to form a tenacious protective film in

applications that are heavily contaminated with water. The excellent results obtained for Mobil Polyrex EP 2 in the water washout

(ASTM D 1264) and water spray-off (ASTM D 4049) tests demonstrate the grease's ability to stay in place, even in the presence of a

pressurized water spray.

In summary, Mobil Polyrex EP 2 offers the following features and benefits:

Outstanding high-temperature oxidation stability

Excellent mechanical shear stability

Thermally stable extreme-pressure (EP) protection

Wide operating temperature range (-40°F to 350°F)

Exceptional resistance to water spray-off and water washout

Applications

Mobil Polyrex EP 2 is an excellent multi-purpose grease for a wide array of industrial and construction applications.

Health & Safety

Healthy skin condition depends on cleanliness. Oils and greases in contact with skin can result in plugging of sweat glands and hair

follicles. This may lead to skin irritation or dermatitis. Accordingly, protective gloves, clothing and equipment should be worn and good

personal hygiene should always be practiced. Oils, greases, and other foreign materials should be removed from the skin promptly.

Soiled clothing should not remain in contact with the skin. MOBIL POLYREX EP 2 is readily removed from the skin by waterless hand

cleaners followed by washing with soap, warm water, and a skin brush. It can be removed from clothing by dry-cleaning with solvents or

by washing with laundry detergents. If MOBIL POLYREX EP 2 comes in contact with the eyes, flush the eyes with fresh water until the

irritation subsides.