Product Description

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

Applications

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

Property 2 3
Grade NLGI 2 NLGI 3
Thickener Type Lithium Complex Lithium Complex
Base Oil Viscosity of Greases @ 40 C, mm2/s, AMS 1697 115 115
Color, Visual Green Green
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

Opmerking

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