Unirex N Series

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.

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.

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

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 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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