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.

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.

 

424 Contact Slip Ring System

Number of Contacts: 424

Maximum Speed: 15,000 RPM

Life Expectancy: 100 Million Revolutions

Direction: Bi-directional rotation permitted

Noise signature: Less than 250 microVolts p-p at any discreet Frequency at 25mA drive current

Bearing Lubrication: Oil - Air Lubrication or grease packed bearings

Recommended Coolant: Syltherm XLT

Coolant Flow Rate: .50 - 1.0 GPM

Maximum Ambient Temperature: 300 F (Consult AEI for other ranges)

Maximum Ambient Pressure: 50 PSIG (Consult AEI for other ranges)

Service Fittings: 1/4 Swagelok

Output Connectors: 4x MIL-C-38999 Connectors

300 Contact Slip Ring System

Number of Contacts: 300

Maximum Speed: 20,000 RPM

Life Expectancy: 100 Million Revolutions

Direction: Bi-directional rotation permitted

Noise signature: Less than 250 microVolts p-p at any discreet Frequency at 25mA drive current

Bearing Lubrication: Oil - Air Lubrication or grease packed bearings Recommended Coolant: Syltherm XLT Coolant Flow Rate:.50 - .75 GPM Maximum Ambient Temperature: 300 F (Consult AEI for other ranges) Maximum Ambient Pressure: 50 PSIG (Consult AEI for other ranges) Service Fittings: 1/4 Swagelok

Output Connectors: 3x MIL-C-38999 Connectors

212 Contact Slip Ring System

Number of Contacts: 212

Maximum Speed: 40,000 RPM

Life Expectancy: 100 Million Revolutions

Direction: Bi-directional rotation permitted

Noise signature: Less than 250 microVolts p-p at any discreet Frequency at 25mA drive current

Bearing Lubrication: Oil - Air Lubrication or grease packed bearings Recommended Coolant: Syltherm XLT

Maximum Ambient Temperature: 300 F (Consult AEI for other ranges) Maximum Ambient Pressure: 50 PSIG (Consult AEI for other ranges) Service Fittings: 1/4 Swagelok

Output Connectors: 2x MIL-C-38999

100 Contact Slip Ring System

Number of Contacts: 100

Maximum Speed: 50,000 RPM

Life Expectancy: 100 Million Revolutions

Direction: Bi-directional rotation permitted

Noise signature: Less than 250 microVolts p-p at any discreet Frequency at 25mA drive current

Bearing Lubrication: Oil - Air Lubrication or grease packed bearings Recommended Coolant: Syltherm XLT at speeds below 40,000 RPM
AK225 w/ oil mixture above 40,000 RPM

Coolant Flow Rate: .25 - .50 GPM

Maximum Ambient Temperature: 300 F (Consult AEI for other ranges) Maximum Ambient Pressure: 50 PSIG (Consult AEI for other ranges) Service Fittings: 1/4 Swagelok

Output Connectors: MIL-C-38999

72 Contact Slip Ring System

Number of Contacts: 72

Maximum Speed: 75,000 RPM

Life Expectancy: 100 Million Revolutions

Direction: Bi-directional rotation permitted

Noise signature: Less than 250 microVolts p-p at any discreet Frequency at 25mA drive current

Bearing Lubrication: Oil - Air Lubrication or grease packed bearings Recommended Coolant: Syltherm XLT at speeds below 40,000 RPM
AK225 w/ oil mixture above 40,000 RPM

Coolant Flow Rate: .25 - .50 GPM

Maximum Ambient Temperature: 300 F (Consult AEI for other ranges) Maximum Ambient Pressure: 50 PSIG (Consult AEI for other ranges) Service Fittings: 1/4 Swagelok

Output Connectors: 37 Pin MIL-C-83513 (Qty 2)

36 Contact Slip Ring System

Number of Contacts: 36

Maximum Speed: 90,000 RPM

Life Expectancy: 100 Million Revolutions

Direction: Bi-directional rotation permitted

Noise signature: Less than 250 microVolts p-p at any discreet Frequency at 25mA drive current

Bearing Lubrication: Oil - Air Lubrication or grease packed bearings Recommended Coolant: Syltherm XLT at speeds below 40,000 RPM
AK225 w/ oil mixture above 40,000 RPM

Coolant Flow Rate: .25 - .50 GPM

Maximum Ambient Temperature: 300 F (Consult AEI for other ranges) Maximum Ambient Pressure: 50 PSIG (Consult AEI for other ranges) Service Fittings: 1/4 Swagelok

Output Connectors: 37 Pin MIL-C-83513

Cooling Carts

AEI designs and manufactures its own line of cooling carts. Our cooling carts will supply filtered purified coolant to the slipring while in operation. AEI's cooling units are extremely reliable and are designed and manufactured with the highest quality components and craftmanship available in the industry today. DC permanent magnet coupled pumps are employed within our system to deliver the cooling fluid, with full user instruments showing flowrate and system pressures. AEI cooling systems are equiped with battery backup to assure continued operation in the event of a site power failure.

Specifications

Pump: DC, permanent magnet, magnetically coupled gear pump

Flow Rate: 0 - 1 GPM

Tank: Stainless Steel, 8 gallon capacity

Heat Rejection: 2,500 BTU/HR, Air/Fluid heat exchanger

Filtration: 5 micron sintered stainless steel filter

Voltage: 110/220 VAC, 50/60 HZ

Power: Less than 700 Watts

Battery Back-up: Provides 15 minutes operation after AC power fail Controls: On/Off (can be remote controlled)
Pump On/Off (can be remote controlled)
Flow Rate

Displays: Pump Pressure
Slip Ring supply pressure
Flow Rate (digital w/analog output)

Alarms: Low Flow
Low Tank
AC Power Fail