AC3757 Miniature Slip Ring

A slip ring can be used in any electromechanical system that requires unrestrained, continuous rotation while transferring power and / or data from a stationary to a rotating structure. A slip ring is also called a rotary electrical interface, commutator, collector, swivel or a rotary joint.

The AC3757 high speed slip ring provides 36 circuits and operational speeds up to 6,000 rpm. Our fiber brush technology minimizes contact wear and resultant debris while it extends operational life. For more information, contact our slip ring experts.


  • 36 circuits
  • High speed performance with customer’s cooling systems:
    • 4,000 rpm without cooling
    • 6,000 rpm with gas cooling (nitrogen)
  • Thermocoupled leads are available
  • Low noise. The low contact force of the fiber brush design reduces resistance (noise) while providing superior power and data transfer capability.
  • Cooling tubes


  • Fiber brush technology. The sliding electrical contacts used in the AC3757 slip ring features our fiber brush technology to provide these benefits:
    • Low contact force per fiber
    • Low contact wear rates
    • Contact surfaces that do not require lubrication
    • Ability to perform in vacuum and varied ambient conditions
  • Improved system performance. Slip rings can improve mechanical performance, simplify system operation and eliminate damage-prone wires dangling from movable joints.
AC3757 Specifications
Ring O.D. 0.270 inch
Ring Pitch 0.032 inch
Flange Diameter 1.600 inch
Bore None
Volts (Peak to Peak) 70
Circuits: 1-26 Leads: 30 (19 / 42) AWG silver plated standard copper conductor
Circuits: 27-36 Leads: Solid chromel and alumel leads

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Typical Applications

  • Centrifuges
  • Tire testing
  • Gasoline or diesel engine testing