Slip Ring Manufacturers and Suppliers

IQS Directory provides useful tools for finding leading slip ring manufacturers and suppliers. Utilize our website to review and source slip ring manufactures with our easy-to-use features which allow you to locate slip ring companies that will design, engineer, and manufacture slip rings for your exact specifications. Our request for quote forms make it easy to connect with leading slip ring manufacturers. View company profiles, website links, locations, phone number, product videos, customer reviews, product specific news articles and other production information. We are a leading manufacturer directory who will connect you with the right manufacturers whether you are looking for reel handling equipment, cable reel handling equipment, or weld head slip rings.

  • Westerlo, NY

    Our hose reels are all made in the U.S., with a heavy-duty design and construction, built specifically to fit your needs and never retrofitted to the job. As a leading manufacturer of high-quality hose reels, Hannay Reels offers one piece hub assembly, heavy gauge steel and dual frame support with special finishes upon request. Visit our website for more information.

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  • Waverly, IA

    When it comes to hose reels, we have what you’re looking for! We are committed to bringing exceptional products and services for our customers. Since becoming established in 1952 we have provided only the most outstanding products available on the market. We honor our family values and treat our customers as if they were a part of our family. Visit our website, send us an email or call us for more information today. We have customer service representatives standing by to assist you.

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  • Omaha, NE

    We know that quality, reliable hose reels are important no matter the application. Our friendly and qualified staff is working around the clock in order to ensure that we provide only the most innovative reels for your convenience. We make it our business to bring products to our clientele that will continue to run 24/7/365. Our rugged products are guaranteed to last year after year. Visit our website for more information or email us today!

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  • Charlotte, NC

    Nederman LLC provides high-quality hose reel products and services. Our products are utilized by a variety of industries. Some of those products include hose reels, service reels, cable reels and air hose reels. Please call or visit our website for more information about our products and service.

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Slip Rings Industry Information

Slip Rings

A slip ring is a device that makes an electrical connection between a stationary structure and a rotating structure. Slip rings are commonly referred to as rotating electrical connectors, wivels, rotary electrical interfaces, electrical rotary joints, and collectors.

Quick links to Slip Rings Information

Applications of Slip Rings

Slip rings are utilized in systems that rely on the transmission of power/data while also maintaining rotation. These systems include but are not limited to electrical generators for AC systems, packaging machinery, alternators, wind turbines, and cable reels.

Slip Ring Design and Function

Slip rings come in a wide range of sizes and can be designed in a number of configurations (such as drum, platter, or pancake) to suit a variety of applications including rotating tanks, radio telescopes, aerodrome beacons, and power shovels. The devices do the same for electrical power and signal that rotary unions do for fluid media and can be employed in a rotary union to work concurrently with the rotary joint to send data as well as power to and from the rotating machinery in conjunction with the media the rotary union offers. Slip rings are known for reliability and having long service lives while meeting exacting requirements in even the most demanding environments and applications.

Slip rings often simplify system operation and improve mechanical performance. A slip ring is usually composed of a stationary graphite or metal contact that brushes on the outer diameter of a rotating metal ring. The current is conducted through the stationary brush to the metal ring to make the connection as the ring turns.

Slip Rings – United Equipment Accessories, Inc.
Slip Rings – United Equipment Accessories, Inc.

Silver Plated vs. Solid Coin

Results provided by: United Equipment Accessories, Inc.

Test performed by: Kyle Riegel, Design Engineer


When used with silver graphite brushes, UEA’s Silver Plated Rings perform with similar resistance to Solid Coin Silver Rings with significant potential savings for the customer.

Silver Plated Ring Solid Coin Silver Ring
Silver Plated Ring Solid Coin Silver Ring


In the test, the resistance was calculated by measuring the potential difference across two brush/ring pairings and dividing by the known current (2 amps). The formula is Resistance=Voltage/Current. It should be noted that UEA silver brushes on silver ring configurations have a significantly low resistance of about 5 milliohms per circuit. In comparison, 300 feet of Cat5e cable has about 14 ohms in resistance.


When comparing the material costs, a coin silver ring is about 7x that of a plated silver ring. Including labor, the savings is over $20/circuit. Although these savings are significant, there are limitations to plating. Silver plated rings will not maintain functionality as long as solid coin silver rings.

Therefore, the specific application must dictate whether it is necessary to use solid silver or plated rings. In the UEA tests, the plated rings were tested well over 5.5 million revolutions and had yet to lose any functionality. In many applications, like cranes, which typically rotate 1 to 2 million times in their lifetime, 5.5 million revolutions is more than sufficient.

Silver Plated Rings/Solid Coin Silver Rings Result Graphs

More Slip Ring Information

Slip Rings Informational Video