Slip Ring Manufacturing

AEI is a premier supplier of a precision line of high speed, low noise, durable, user friendly, liquid or air cooled slip rings. Our fleet of standard and custom slip rings are used in a variety of applications world wide for testing and development of rotating machinery.

AEI's slip rings transfer very clean and quiet signals from rotating sensors to stationary data systems. Typical applications include strain and temperature surveys of compressors and turbines, shaft torque and bending measurements, and power transfer on/off the rotor.

Our Gold alloy contacts provide very quiet signals, long life, and high contact density.

Our designs are the result of decades of experience as slip ring users and designers. The units are very easily adapted to the test article and are very robust.


36 Contact, 90,000 RPM

Standard Features and Specifications Include:

  • Gold Alloy Contacts
  • Cleanest Signals Available - < 250 microvolts p-p at any frequency (25mA drive current)
  • Durability: > 100 Million revolutions
  • Ease of Installation
  • Air Cooled
  • Liquid Cooled - (Non CFC coolants available)
  • Super Precision Ground Shaft
  • Grease or Oil Mist bearings, application specific (Bearing T/C's supplied)
  • Connectors - Multipin Mil-Spec
  • Customer Owned SlipRing Refurbishing (All Brands)

Custom Designs
AEI can apply our experience to create custom designs to meet challenging applications.

  • Intermediate bearing assemblies with multiple termination capability (for example, 200 termination contacts monitored by a 100 contact slip ring)
  • On-rotor multiplexing switches to monitor a greater number of channels
  • Very small high speed rings- to 150,000 RPM
  • Automotive transmission slip rings
  • Flight test slip rings
  • Silver Graphite slip rings for blade-off testing and power applications

Installation Design and Support
AEI welcomes the opportunity to design and fabricate the installation adapting hardware for the slip rings. This assures the customer that this hardware will be right and proven before the actual test. We typically assemble and spin test the hardware with the slip ring to assure that fit and stack-up are correct. Installation designs can include cooling cans for hot end installations, sealing arrangements for lead-wires exiting the engine shaft, and complicated outer-housing rotating installations.

AEI can also provide complete support for the slip ring installations. Our technicians can terminate the rotating leads, mount the slip rings, and provide test support as required to assure successful testing and data quality.

Overhaul and Rentals
AEI can repair and overhaul many older designs of slip rings. We have experience with virtually all high speed slip rings used in the last 40 years and can provide rebuild and overhaul support for these units.

AEI also has rental fleet of slip rings, which customers can use. Cost is based on duration of lease period and number of hours used.