AC7008-ESS Wind Turbine Slip Ring

Direct Slip Ring Replacement

Moog now offers a direct replacement pitch control slip ring for the *GE 1.5 ESS wind turbine. Moog’s unit provides direct connection to the gearbox with wire terminal connections in both the stator and rotor junction boxes. Each unit is shipped with a heater already installed for cold weather installations. With numerous turbines in operation, this GE series continues to be one of the world’s most widely used wind turbines in its class.

For more information about how Moog's wind turbine slip rings can fit your specific application, contact our slip ring experts.


  • No maintenance required
  • Direct bolt-in replacement
  • Rugged dual-row bearing
  • Heater for cold weather installations


  • Maintenance free for 100 million revolutions
  • Minimal wear debris generation
  • No lubrication required
  • Wide operating temperature
  • Lower life cycle cost
  • High reliability
  • No periodic inspections required
  • Heavy duty bearing system
  • Optimized Ethernet communication

*GE Energy ( is one of the world’s leading suppliers of power generation and energy delivery technologies.

Weight 60 pounds
Brush Material Silver alloy
Ring Material Silver plate
Brush Life > 100 million revolutions
Ring Life > 100 million revolutions
Lubrication No lubrication required
Cleaning / Maintenance Interval No maintenance required
Power Circuit Rating 65 amps at 690 volts
Communication Lines Ethernet
Operating Temperature -40°C to +80°C
Heating Element 13 watt, 240 volts standard
Sealing IP 54