POLYREX EM
电机轴承润滑脂
产品描述
超级美孚™POLYREX EM系列润滑脂是专为电机轴承。先进的增稠剂配方和专有的制造技术提供了改进的轴承性能和长电机寿命的保护。
应用
美孚EM润滑脂推荐的许多主要的轴承和电机制造商的长寿命润滑电机滚珠轴承和滚柱轴承。
美孚EM 103更具体的建议，应用如垂直安装的轴承，还是非常大的电机的围追堵截的一致性可能需要由OEM，和低噪声性能是不需要的。
美孚EM润滑脂已被证明是与埃克森美孚公司的复合锂基润滑脂兼容，以及竞争力的电动马达矿物聚脲产品，如ASTM d6185方法确定。有关润滑脂兼容性的具体问题，请与您的美孚代表联系。
主要应用包括：
电机轴承
散热片风扇轴承
高温泵轴承
工厂填充，密封的生活球轴承
在需要低油分离的高温下工作的球或滚子轴承
美孚EM球或滚子轴承在噪声敏感的环境中工作
Mobil Polyrex™ EM
Electric Motor Bearing Grease
Product Description
Super-premium Mobil Polyrex™ EM Series greases are specially formulated for electric-motor bearings. The advanced thickener formulation and proprietary manufacturing techniques provide improved bearing performance and protection for long electric motor life.
Features and Benefits
Mobil Polyrex EM and Mobil Polyrex EM 103 offer the following features and benefits:
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Features
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Advantages and Potential Benefits
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Outstanding grease life
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Outstanding long-life, high-temperature lubrication of ball and roller bearings, particularly in sealed-for-life applications
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Advanced polyurea thickener
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Increased durability versus conventional polyurea greases when subjected to mechanical shear forces
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Excellent corrosion resistance
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Mobil Polyrex EM and Mobil Polyrex EM 103 provide protection against rust and corrosion. Mobil Polyrex EM provides additional protection under mild salt-water wash conditions versus Polyrex EM 103
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Low-noise properties
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Mobil Polyrex EM is suitable for lubrication of ball bearings in many noise-sensitive applications
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Applications
Mobil Polyrex EM greases are recommended by many major bearing and electric motor manufacturers for long-life lubrication of electric motor ball and roller bearings.
Mobil Polyrex EM 103 is more specifically recommended for applications such as vertically mounted bearings, or very large motors where a stiffer grease consistency may be required by the OEM, and low noise properties are not required.
Mobil Polyrex EM greases have been shown to be compatible with a number of ExxonMobil lithium complex greases, as well as competitive electric motor mineral polyurea products, as determined by the methodology of ASTM D6185. For specific questions about grease compatibility, contact your Mobil representative.
Key applications include:
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Electric motor bearings
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Fin fan bearings
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High-temperature pump bearings
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Factory-filled, sealed-for-life ball bearings
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Ball or roller bearings operating at high temperatures where low oil separation is required
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Mobil Polyrex EM for ball or roller bearings operating in noise sensitive environments
Specifications and Approvals
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Mobil Polyrex EM meets or exceeds the requirements of:
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Mobil Polyrex EM
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Mobil Polyrex EM 103
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DIN 51825: (2004-06)
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K2P-20
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Typical Properties
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Mobil Polyrex EM
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Mobil Polyrex EM 103
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NLGI Grade
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2
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3
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Color
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Blue
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Blue
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Base Oil Viscosity, ASTM D 445
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cSt @ 40°C
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115
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115
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cSt @ 100°C
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12.2
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12.2
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Viscosity Index, ASTM D 2270
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95
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95
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Penetration, ASTM D217 worked, 60x, mm/10
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285
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250
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Penetration Change after 100.000 strokes, ASTM D217, mm/10
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40
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40
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Dropping Point, ASTM D 2265, °C (°F)
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260
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270
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Oil separation test, ASTM D 1742, %
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0.5
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0.1
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High Temperature Grease Life, ASTM D 3336, Hours @ 177°C
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750+
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750+
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4-Ball Wear Scar, ASTM D 2266, @ 40kg, 1200 rpm, 75°C, 1 hr, mm
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0.41
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0.6
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Low Temperature Torque, ASTM D 1478, g-cm @ -29°C
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Starting
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7500
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9300
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Running
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800
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1000
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EMCOR Corrosion Performance, 10% Synthetic Sea Water ASTM D 6138 (Prepared As Per ASTM D 665B)
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0,1 (No Rust)
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Rust Protection, ASTM D 1743, Distilled Water
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Pass
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Pass
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Copper Corrosion Resistance, ASTM D 4048
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1A
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1A
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Water Washout, ASTM D 1264, %
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1.9
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0.8
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