UNIREX N greases are premium-quality, lithium-complex products suitable for high-temperature service in rolling-element bearings. These versatile greases can be used in a wide range of industrial applications and are particularly recommended for electric-motor lubrication.
Unirex N 2 in an NLGI No. 2 grade and is preferred in most cases for application by hand packing or by grease gun. UNIREX N 3 is an NLGI No. 3 grade often used for special applications such as sealed-for-life electric motor bearings, vertically mounted bearings, and higher-speed applications. UNIREX N greases are not intended to be used under extreme pressure conditions where extra anti-welding properties are required.
UNIREX N 2 meets the requirements of Lubricating Grease DIN 51825 – K2N – 20L and ISO L-XBDHA 2.
UNIREX N 3 meets the requirements of Lubricating Grease DIN 51825 – K3N – 20L and ISO L-XBDHA 3.
Features and Benefits
Unirex N greases exhibit excellent high and low temperature performance, resistance to water and corrosion, and long service life in a range of bearing applications.
|Features||Advantages and Potential Benefits|
|Excellent high-temperature performance||Lithium-complex thickener resists softening / running out of bearings at temperatures up to 190°C|
|Outstanding grease life||Laboratory bearing rig tests show outstanding continuous lubrication performance at bearing temperatures of up to 140°C|
|Very good low-temperature characteristics||Start-up power requirements are low at temperatures down to at least -20°C. Meets DIN 51825 low temperature torque requirements at -20°C|
|Excellent mechanical stability||Exhibits excellent resistance to softening due to mechanical working|
|Excellent water and corrosion resistance||Resists water washout and protects bearings against corrosion|
|Excellent performance in high-speed applications||Channelling characteristics provide excellent performance in high- speed deep-groove ball bearings. Unirex N3 is recommended where DmN (mean bearing diameter X rpm) exceeds 360,000|
UNIREX N 2 is an NLGI No. 2 grade and is preferred in most cases for application by hand-packing or by grease gun. UNIREX N 2 is recommended for the lubrication of electric motors. It is suitable for NEMA (National Electric Manufacturer’s Association) Insulation Class A, B, and F motors.
UNIREX N 3 is an NLGI No. 3 grade and is used for special applications such as sealed-for-life bearings, vertically-mounted bearings, and higher-speed bearings.
Most of the uses for UNIREX N involve manual methods of application. Although UNIREX N 2 is suitable for use in automatic centralized systems, equipment served by these systems would normally not require the long-life properties of UNIREX N, since one of the functions of automatic systems is to replenish the lubricant at relatively short time intervals. UNIREX N 3 should not be used in such systems.
Specifications and Approvals
|This product meets or exceeds the requirements of:||2||3|
|DIN 51825:2004-06 – K 2 N -20 L||X|
|DIN 51825:2004-06 – K 3 N -20 L||X|
|ISO 6743-9: 2003 L-XBDHA 2||X|
|ISO 6743-9: 2003 L-XBDHA 3||X|
Properties and Specifications
|Grade||NLGI 2||NLGI 3|
|Thickener Type||Lithium Complex||Lithium Complex|
|Base Oil Viscosity of Greases @ 40 C, mm2/s, AMS 1697||115||115|
|Dropping Point, °C, ASTM D2265||230||230|
|Oil Separation, 30 h @ 100 C, mass%, ASTM D6184||1.5||0.6|
|Penetration, 100 KX, 0.1 mm, ASTM D217||25||30|
|Penetration, 60X, 0.1 mm, ASTM D217||280||235|
|SKF Emcor Rust Test, Distilled Water, Bearing 1, ASTM D6138||0||0|
|SKF Emcor Rust Test, Distilled Water, Bearing 2, ASTM D6138||1||1|
|Viscosity Index, ASTM D2270||95||95|
|Water Resistance, 1 h @ 79 C, wt%, ASTM D1264||3.7||3.5|
Health and Safety
Health and Safety recommendations for this product can be found on the Material Safety Data Sheet (MSDS) @ http://www.msds.exxonmobil.com/psims/psims.aspx
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