Mobil Arapen RB 320
Grease
Product Description
Mobil Arapen RB 320 is a high performance long-life grease developed for the roller bearings of railroad car journals where no provision is provided for in-service re-lubrication. It is formulated with a mineral base fluid and a mixed lithium / calcium soap thickener. Mobil Arapen RB 320 grease has the high oxidation stability required to maintain good lubrication throughout extended periods of service or storage. It is highly resistant to chemical deterioration that might otherwise produce acids or deposits that are detrimental to long bearing life. Mobil Arapen RB 320 grease has exceptional ability to withstand shear, i.e. retain consistency after prolonged working, as in the churning action of an anti-friction bearing. This grease has been shown to have little effect on seal materials. Largely because of its special calcium-lithium-soap base, Mobil Arapen RB 320 grease has a high resistance to structural change in the presence of water. It is also inhibited to give protection against rusting.
Mobil Arapen RB 320 is fully approved against Specification M-942 of the Association of American Railroads for Journal Roller Bearings Grease for non-field lubricated bearing applications. It is used by major manufacturers of railroad journal bearings as the factory-fill lubricant. Mobil Arapen RB 320 has an application temperature range of -20ºC to +120ºC.
Features and Benefits
Mobil Arapen RB 320 railroad car journal bearing grease offers the following features and benefits:
- Approved against AAR specification AAR-942
- Formulated for long service life over a wide range of climatic conditions
- Exhibits excellent oxidation stability, shear stability, seal compatibility, and water resistance for extended grease life and equipment integrity
Applications
- Roller bearings of railroad car journals where no provision is provided for in-service re-lubrication.
- Factory fill lubricant of major railroad journal bearing manufacturers
Specifications and Approvals
| Mobil Arapen RB 320 has the following builder approvals: |
|
| AAR-942 |
X |
Typical Properties
| Mobil Arapen RB 320 |
|
| NLGI Grade |
1.5 |
| Thickener Type |
Lithium/Calcium soap |
| Color, Visual |
Light Amber |
| Penetration, Worked, 25º C, ASTM D 217 |
305 |
| Dropping Point, ºC, ASTM D 2265 |
180 |
| Viscosity of Oil, ASTM D 445 |
|
| cSt @ 100º C |
14.7 |
| Penetration, ASTM D 217, Change from 60X to 100,000X, mm/10 |
+20 |
| Emcor Rust, ASTM D 6138, Distilled Water |
0/0 |
| Oxidation Stability, ASTM D 942 |
|
| - pressure drop at 100 hrs, psi |
1 |
| - pressure drop at 500 hrs, psi |
3 |
Health and Safety
Based on available information, this product is not expected to produce adverse effects on health when used for the intended application and the recommendations provided in the Material Safety Data Sheet (MSDS) are followed. MSDS's are available upon request through your sales contract office, or via the Internet. This product should not be used for purposes other than its intended use. If disposing of used product, take care to protect the environment.
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11-2011
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