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ChevronTexaco Black Pearl® NLGI 2 Grease EP
Categories: Fluid; Lubricant; Urea Gellant

Material Notes: Features

Chevron Black Pearl Greases EP are multipurpose, extreme pressure, water-resistant greases.

They are formulated with ISOSYN® base stock, a polyurea thickener, and rust and oxidation inhibitors. They are black in color and smooth and buttery in texture.

Applications

Chevron Black Pearl Greases EP provide outstanding film strength and adhesive properties. As a result, these products are particularly effective in providing superior wear protection in heavily loaded and shock load conditions.

Chevron Black Pearl Greases EP stay in place, sticking to bearing surfaces and, thus, provide excellent lubrication under a wide range of operating conditions. They perform particularly well in roller bearings. These products provide exceptional water wash out results. They perform well in applications where cascading water or actual bearing submergence can occur. The rust inhibitors effectively protect bearing surfaces against corrosion. Pumpability is excellent over a wide range of temperatures as indicated by the Lincoln ventmeter test and the relatively low pressure drop in piping. Oxidation inhibitors ensure long life in storage and in use. In addition, Chevron Black Pearl Greases EP also perform well at high temperatures.

Key Words: CPS Number: 254591; MSDS Number: 7237
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Physical PropertiesOriginal ValueComments
Viscosity Measurement 79Viscosity Index; ASTM D2270
Saybolt Viscosity at 100°F 816 SUS
Saybolt Viscosity at 210°F 74 SUS
Kinematic Viscosity at 40°C (104°F) 154 cStASTM D445
Kinematic Viscosity at 100°C (212°F) 13.5 cStASTM D445
 
Mechanical PropertiesOriginal ValueComments
Four Ball Extreme Pressure, Weld Load 400 kgWeld Point
Four Ball Wear 0.420 mm
Penetration 280Worked (60 strokes)
 350Worked (100,000 strokes)
Penetration P(0), 1/10 mm 300
Timken Test 60.0 lb
 
Thermal PropertiesOriginal ValueComments
Maximum Service Temperature, Air 160 °C
Minimum Service Temperature, Air -20.0 °C
Pour Point -15.0 °CASTM D97
Flash Point 260 °CASTM D92
Dropping Point 245 °C
 
Descriptive Properties
Bearing RustPass
ColorBlack
Corrosion, Copper Strip Test 3h1a
Lincoln Ventmeter, psig at 30 s, at 0°F800
Lincoln Ventmeter, psig at 30 s, at 30°F350
Lincoln Ventmeter, psig at 30 s, at 75°F300
TextureSmooth, Buttery
Thickener, % / type18.2 / Polyurea Complex

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

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WCHEV239 / 74854

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