Top 10 Slip Ring Manufacturers & Suppliers

In the world of industrial slip rings, whether in a robotic arm on a high-speed assembly line, a military-grade radar turret, or a medical CT gantry, transmitting power and signal without interruption is mission-critical. The slip ring is the silent enabler of that rotation and continuity..

This article helps engineers, procurement leaders, and OEMs navigate the top slip ring manufacturers globally. Covering product specialities, industry certifications, and core innovations to support informed sourcing and long-term partnerships when it comes to choosing the best slip ring supplier.

Slip Ring Selection: What Matters Most

Choosing the right slip ring supplier begins with understanding the application, which contains more than just “rotating and transmitting.” Here are the primary technical and application factors you need to align before selecting a slip ring supplier:

Technical Requirements

● Structure type: Through bore, Pancake, Separate，or capsule form factors etc.

● Transmission: High-voltage, Mixed signal, Fibre-optic channels，Capacitive coupling，Gas，Liquid etc.

● Environmental Protection: On shore or Off shore,Low altitude and High-altitude areas,IP54–IP68, Corrosion-resistant, MIL-STD

Application-Specific Compliance

● Medical: EMC shielding, high-speed imaging, ISO 13485

● Defence: MIL-STD-810, EMI protection, rugged design

● Wind & Energy: Long-life brushes, vibration resistance, IP67+,APQP4WIND

High-performance slip rings aren’t about just fitting the voltage; they’re about fitting the system, lifecycle, and regulatory landscape.

Top 10 Slip Ring Manufacturers & Their Industrial Strengths

1. Moog Inc. (USA)

Core Industries: Aerospace, wind, defence, medical

Highlight: Over 10,000 slip ring designs, including fibre-optic rotary joints

Standout Product: Hybrid slip rings for CT gantries and wind turbines, Focal Marine&Subsea slip ring,GAT

Website: https://www.moog.com/ 

Moog slip rings specialises in custom rotary joints that combine power, signal, and fibre optic transmission. Their systems are used in CT scanners, military vehicles, and offshore drilling rigs. Moog’s proprietary brush contact designs provide low electrical noise and long service life.

They offer gold-on-gold contact technology, EMI-shielded designs, and can integrate media joints (fluid + signal) in a single housing. Moog slip rings are one of the best on the market.

2. SCHLEIFRING (Germany)

Core Industries: Aerospace, wind, medical imaging, automation
Highlight: Modular slip rings, contactless data transmission up to 80Gbps
Standout Product: Large-diameter CT rings with ultra-low latency
Website: schleifring.de

Schleifring is renowned for its precision engineering, particularly in medical imaging, defence radar, and industrial automation. Their slip rings are highly customisable, featuring contactless data channels that support gigabit speeds and ultra-large bore models (up to 2 meters).

They utilise modular platforms to develop hybrid assemblies that cater to both high-speed data and high-current power, making them a leader in high-performance slip rings for sensitive applications.

3. Cobham (UK/USA)

Core Industries: Military, aerospace, maritime
Highlight: MIL-STD compliant rotary joints with RF signal integration.
Standout Product: Radar system slip rings for airborne platforms
Website: cobham.com

Cobham slip rings are dedicated to aerospace and defence, and meet MIL-STD and high EMI, high vibration environments. Redundancy, hardened enclosures, and multi-channel power and signal paths are common in their rotary joints.

In systems that require stealth, ruggedness, or encryption, Cobham assemblies are designed to the most rigorous technical specifications needed for the military.

4. Stemmann-Technik (Germany)

Core Industries: Wind, automation, oil & gas
Highlight: Explosion-proof slip rings and hybrid media couplings.
Standout Product: Offshore-rated assemblies with combined electric/pneumatic paths
Website: https://www.stemmann.com/en/home 

Stemmann designs slip rings for automation, cranes, rail, and wind turbine applications. Their assemblies can be explosion-proof, marine-rated, and modular, with configurations supporting analogue, digital, and media channels.

Their standard platforms enable custom configurations while maintaining reasonable lead times. Their strength lies in reliability under mechanical stress, perfect for offshore rigs and wind nacelles.

5. NBG Innovations Group (Singapore/China)

Core Industries: Medical, Wind energy,Satellite
Highlight: Contactless data rings up to 251 Gbps, sub-1μs latency.
Standout Product: CT gantry slip rings with real-time diagnostic grade transmission
Website: https://www.nbginnovationsgroup.com/ 

NBG is a global supplier of CT imaging and other medical platforms, known for achieving data transmission speeds of up to 251 Gbps. Their systems include capacitive coupling contactless channels,and hybrid FORJ and electric slip rings,hybrid Gas&Liquid and electric slip rings.

While specialised, NBG also offers custom through bore slip rings for automation, enabling signal, electric power, and encoder setups in small space.

6. Everaxis (FR)

Core Industries: Defence, aerospace, automation
Highlight: Sliver-Silver contact technologies,contactless electromagnetic transmission  technology.
Standout Product:Vacuum Slip Rings, contactless transmission slip rings

Website: https://www.everaxis.com/

Everaxis’s products are suitable for Defence,satellite,   wind tunnels, and factory automation, where EMI resistance and speed are vital.

7. Morgan Advanced Materials (UK)

Core Industries: Wind turbines, defence, power tools
Highlight: Carbon slip rings and contact brushes, global supplier.
Standout Product: National 634-grade brush for turbo alternators
Website: morganadvancedmaterials.com

Morgan’s strength lies in carbon-based electrical materials, offering collector systems and carbon brushes optimised for power generation. Their 634 carbon grade is a benchmark for generators and heavy motors.

They supply systems to the railways, mining, and maritime industries, supporting sustainable transitions by enhancing brush life and generator performance.

8. Cavotec SA (Switzerland)

Core Industries: Marine, ports, mining, drilling
Highlight: Modular slip ring towers with fibre-optic or hydraulic integration.
Standout Product: Marine propulsion slip rings with hybrid signal routing
Website: cavotec.com

Cavotec’s slip rings are designed for ports, cranes, and offshore equipment. Their patented brush technology offers high vibration resistance, and their systems often combine optical, power, and hydraulic transmission.

They are an excellent choice for dynamic and mobile infrastructure, especially in harsh environmental zones.

9. LTN Servotechnik (Germany)

Core Industries: Surveillance, industrial robots, medical
Highlight: Real-time fieldbus (Ethernet/CANbus) rotary joints.
Standout Product: Certified Ethernet rings for automation cells
Website: https://www.ltn-servotechnik.com/ 

LTN offers hybrid slip rings that support real-time Ethernet protocols (e.g., Profinet, EtherCAT), with certified performance in accordance with EN 50173. Their designs are ideal for robotic systems, medical devices, and wind turbines.

They also offer fibre-optic and contactless transmission variants with excellent signal fidelity and latency control.

10. Mersen (France)

Core Industries: Power generation, hydro, mining
Highlight: Carbon brush slip rings for high-current industrial motors.
Standout Product: Slip rings for asynchronous wound motors
Website: https://www.mersen.com/en 

Mersen specialises in power-intensive slip rings for motors, turbines, and hydro generators. Their assemblies support up to 1200V and 400A, often using advanced carbon brush systems. Their robust mechanical housing ensures stable transmission under prolonged duty cycles.

Known for long life and excellent thermal management, Mersen is ideal for systems where power integrity and downtime are mission-critical.

Comparison Table: Snapshot of Strengths

Application-Based Recommendations

If you're seeking medical-grade slip rings for low-noise, high-speed data, start your search with Schleifring, Moog slip ring, or NBG. These slip ring suppliers support high signal integrity with contactless or hybrid designs.

For heavy outdoor industrial use, consider Stemmann-Technik or Mersen, which provide IP65/IP67-rated products with heavy-duty contacts and support for power and signal hybrid loads.

In aerospace and military applications, precision and durability under extreme conditions are critical for military-grade slip rings. Cobham and Moog both meet high EMI resistance and MIL-spec standards, offering systems with redundant channels.

Conclusion

When it comes to industrial slip rings, precision matters, but equally important is the supplier’s ability to co-engineer, customise, and support your project across its lifecycle.

The slip ring suppliers highlighted here aren’t just sellers, they are innovators and long-term partners. Use this article as a decision tool, reference their technical literature, and shortlist based on the criteria that match your application, not just price or lead time.

Need a customised recommendation or integration consultation? Let’s talk.