Model 129 Winch Slip Ring


Web Product Page Image


Voltage Maximum 7200 VAC
Current Maximum 125 A per pass, wire in parallel for higher current
Contact Resistance 20 mΩ nominal
Insulation Resistance Minimum 500 MΩ @ 1 kVDC, dependent on wire type
Short Circuit Rating 11kA / 1s, 17 kA peak
Rotation Speed Maximum 50 rpm continuous, contact factory for higher speeds
Protection Class Sealed to IP66, except for pigtail exits
Operating Temperature -20° C to + 55° C
Housing Stainless steel (304)
Length "L" Varies with number of electrical passes

The Model 129 is a power winch slip ring used in marine and industrial applications worldwide. When rugged environments demand reliable, continuous operating performance, the model 129 is the slip ring of choice. Capable of transmitting up to 7200 volts and 125 amps per slip ring pass, the 129 can reliably transfer power across a rotating interface.


  • Stainless steel housing provided for rugged environments
  • Hazardous area certification available
  • Power and signal transfer integrated into a single unit


  • Each unit designed, manufactured, and tested in accordance with the highest quality standards
  • Maintenance free operation
  • Proven reliable, long life performance
  • Integration with Fiber Optic Rotary Joints (FORJs) and  Rotary Unions to provide a complete rotating interface solution

Typical Applications

  • Industrial machinery
  • FPSO swivel stacks
  • Trenchers
  • Subsea Mooring
  • Plows