Project Overview

New Zealand’s coastal wind farms get strong sea winds, salt-laden air, and year-round fatigue loads. For wind turbine yaw and pitch slewing bearings, we built a heavy-duty external-gear ring matched to Kato NK100 standards that handles low-speed rotation under complex wind conditions.

The entire bearing is forged from 42CrMo steel. External gear surfaces are precision-machined and thoroughly cleaned to remove burrs and contaminants. Using a single-row four-point contact ball design, raceways are induction-hardened and gears reach DIN Class 7 to resist repeated wind impacts. We display finished units in multiple dimensions for quality verification.

Salt-fog-resistant sealing and specialized lubrication channels stop coastal salt mist penetration. All dimensions are calibrated against confidential drawings. Our photos capture multi-angle finished views, partial structure, and cleaning procedures. Designed for long continuous operation, this ring provides steady, lasting rotary support for New Zealand’s onshore and coastal wind farms.

Technical Highlights

  • Custom triple-lip seal design to prevent dust and moisture ingress
  • Induction-hardened raceway: 55–58 HRC surface, 3.5 mm case depth
  • External gear profile: module m=6, Z=168, 20° pressure angle
  • Load capacity: 680 kN axial, 135 kNm overturning moment
  • Grease refill interval extended from 80h to 200h with polyurea-based high-temp grease
  • Pre-assembly ultrasonic inspection and 360° torque test before shipment

Project Gallery