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Pitch and Yaw Bearings

Challenges for pitch & yaw bearings of wind turbines:

  • Small adjustment movements, vibrations and high humidity (especially for off-shore turbines)
  • High torques
  • Low temperature conditions
  • Lifetime lubrication

Main characteristics to solve the challenges: 

  • Formulation designed to meet lifetime lubrication requirements
  • White solid lubricants dampening vibrations which help to minimize wear (surface protection)
  • Very good low temperature behavior

Overview of relevant lubricating solutions for pitch & yaw bearings

 Base oilThickenerSolid lubricantsNLGI classTemperature rangeProgr. lubrication system suitability
GLEITMO 585 KSyntheticLithiumWhite solids2-45 / +130 °C  
GLEITMO 585 K PLUSSyntheticLithiumWhite solids2-45 / +130 °C yes
GLEITMO 850 STSemi-syntheticHybridWhite solids1-40 / +130 °C yes
STABYL LX 460 SYNSyntheticLithiumWhite solids1-2-40 / +140 °C yes

GLEITMO 585 K was developed to address the specific needs of pitch and yaw bearings.
This innovative formula uses a proprietary combination of reactive solids that chemically bond to the surface of the bearing. This creates a durable, solid layer of protection, reducing metal-to-metal contact and related friction and wear during oscillation.

Key Features 

  • Exceptional wear protection
  • Reduced friction
  • Extended bearing service life
  • Approvals: GE Energy, Nordex, Goldwind, MHI, Acciona, Clipper, INOX WIND, ThyssenKrupp Rothe Erde, IMO, ZS Schmieranlagen Vertriebs GmbH & Co.KG, BIJUR DELIMON, Baier + Köppel GmbH + Co

Performance Advantages

  • Operating temperature range: -45°C to 130°C (-49°F to 266°F)
  • Outstanding wear protection, especially at shock loads and oscillatory movements
  • Excellent protection against standstill marks, fretting corrosion and tribo-corrosion

Test Results that Speak for Themselves

In each industry specific performance testing below, GLEITMO 585 K provides superior test results versus the competitor's offerings. The results are reflected in real world grease performance.

The Benefits of GLEITMO 585 K

GLEITMO 585 K shows superior wear protection when compared to a competitor's wind grease. The pictures below are shown at 40 and 200 times magnification.

40X

SRV with competitor grease

40X

SRV with GLEITMO 585 K

200X

SRV with Competitor Grease

200X

SRV with GLEITMO 585 K

As the wind industry evolves, so do its demands for safety, environmental responsibility, and operational efficiency. GLEITMO 850 ST enhances the strengths of GLEITMO 585 K and offers a next-generation solution.

Key Features

  • Patented Polyurea-Calcium thickener system combined with semi-synthetic base oils
  • Extreme Pressure (EP), Anti-Wear (AW), and Corrosion Protection additives
  • White solids for excellent surface protection and reduced false brinelling
  • No PFAS, ensuring compliance with future environmental regulations
  • No Lithium soap, avoiding exposure to volatile raw material markets

Performance Advantages

  • Suitable for onshore and offshore turbine applications
  • Wide temperature range from -40°C to +120°C (-40°F to 248°F)
  • Outstanding water and saltwater resistance
  • Pumpable in centralized lubrication systems using progressive distributors. (System compatibility should be verified with your manufacturer.)
  • Supports long bearing service life
  • No occupational safety restrictions, making it a future-proof product for your operations

With decades of experience and a relentless focus on innovation, FUCHS offers a full portfolio of solutions tailored to the unique needs of the wind energy sector:


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