Advanced Product Solutions
Long-Life
Water-Resistant Grease
Effective lubrication is essential to bearing performance and operating life, particularly in rolling mill applications where the entry of foreign debris and water can quickly lead to lubricant deterioration, metal-on-metal contact and flaking damage.
For sealed four-row tapered roller bearings and work roll applications, NSK has developed long-life water-resistant grease (AQGRD R1) which is enhanced in base oil viscosity and special water-resistant additives.
With a thicker layer of oil film and a protective oxide film, AQGRD R1 grease possesses advanced properties to repel water. Even in cases where there is insufficient oil film, the protective oxide film is still able to prevent water contact between the rollers and raceway surfaces.
Proven Advantages
 |
Inhibits water entry to rolling surface |
|
Minimizes premature flaking and rust |
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More than doubles bearing flaking life versus conventional grease |
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Reduces grease consumption and grease waste |
NSK Bearing Grease Properties
| CONTENTS | AQGRD R1 GREASE |
|---|---|
| Color | Yellow |
| NLGI grade | 2 |
| Consistency (worked penetration) | 322 |
| Base oil | Mineral oil |
| Thickener | Lithium complex soap |
| Base oil viscosity, mm2/s at 40°C / at 100°C | 352 / 28.7 |
| Viscosity index | 108 |
| Dropping point (°C) | 216 |
| Oil separation (mass %) | 1.4 |
| Oxidation stability (kPa) | 30 |
| Water washout (mass %) | 59 |
| Corrosion preventive properties (based on ASTM D1743) | #1 (no corrosion) |
