AMSOIL Industrial Synthetic Extreme-Duty Performance (XDP) Grease is specifically engineered to provide consistent long-term lubrication of large, slow-speed, high-load wind turbine main bearings and other heavy-duty industrial applications. It delivers superior protection against wear and corrosion in severe-service and outdoor environments.

• Superior protection against extreme-pressure wear in severe-service applications.
• Exceptional protection against corrosion from condensation, water ingress and operation in wet environments.
• Protects wind turbine bearings from fluctuating wind speed and from fretting at inoperable times.
• Outstanding cold-flow properties for fast startup protection and improved equipment efficiency at low temperatures.
• Superior thermal and oxidative stability at high temperatures.
• Exceptional compatibility with preexisting installed greases.

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Grease subjected to heavy loading may experience mechanical instability that reduces grease life and can lead to catastrophic equipment failure and costly downtime. Grease failure in wind turbine bearings can be caused by overcharging, which prevents the grease from clearing properly and leads to increased mechanical shearing. This issue is exacerbated in enclosed bearings with restricted purging and by grease that hardens through shearing and aging.

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AMSOIL Industrial Synthetic XDP Grease is specifically engineered to maintain its load carrying capability and deliver consistent lubrication. It softens in use to allow safe purging of excess grease in overcharged bearings for superior long-term bearing protection.

Extreme-Pressure Load Capacity

The ASTM D5706 test method uses high-frequency, linear-oscillation (SRV) technology to evaluate a grease’s ability to resist surface welding and seizure under extreme-pressure conditions.

Used samples of AMSOIL Industrial Synthetic XDP 460 Grease and a leading competitor’s ISO 460 grease were analyzed using this method after six, nine, and twelve months of operation in identical turbine main bearings. Under these test conditions, AMSOIL Industrial Synthetic XDP 460 Grease demonstrated stable extreme-pressure properties throughout the evaluation period, while the competitor’s grease showed measurable decline in SRV weld-load performance over time.

Based on SRV Weld Load testing (ASTM D5706) performed on used grease samples collected in 2022 from two GE* 2.X-116 main bearings during 12 months of operation. Results reflect the specific conditions and samples tested and should not be interpreted as predictive of performance in all equipment or operating environments.

Anti-Wear Protection

The ASTM D5706 test method uses high-frequency, linear-oscillation (SRV) technology to evaluate a grease’s ability to resist surface welding and seizure under extreme-pressure conditions.

AMSOIL Industrial Synthetic XDP 460 Grease was evaluated using this method after 12 months of service in a wind-turbine main bearing and compared to a new sample of a leading competitor’s ISO 460 grease. The AMSOIL Industrial grease sample exhibited substantially lower wear scar depth (0.26 microns) than the competitor sample (2.12 microns), demonstrating excellent retention of anti-wear properties after extended use.

Based on SRV Anti-Wear test results (ASTM D5707) comparing a used sample of AMSOIL Industrial Synthetic XDP 460 Grease collected after 12 months of service in a GE 2.X-127 main bearing with a new sample of a leading competitor’s ISO 460 lithium complex grease. Results reflect laboratory test conditions and are not a guarantee of field performance.

*All trademarked names are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use.

See how AMSOIL Industrial Synthetic Extreme-Duty Performance (XDP) Grease compares against the rest of our grease family.