Every rotating system that needs to transmit electrical power, data signals, Ethernet communications, or fluid media from a stationary structure to a rotating one depends on a critical component: the slip ring.
From robotic wrists and packaging turrets to radar pedestals and wind turbine nacelles, slip rings are the invisible enablers that keep rotating systems connected, powered, and communicating. When they work well, nobody notices them. When they fail (or when they introduce electrical noise, signal degradation, or mechanical unreliability) the entire system suffers.
That is why specifying the right slip ring from a proven manufacturer matters. And for UK engineers, Servotecnica SpA represents the gold standard in rotary transmission technology — now available locally through Torquety.
In this guide, we cover the complete Servotecnica slip ring and rotary joint portfolio, explain how to select the right solution for your application, and show you exactly how to source them in the UK.
What Is Servotecnica?
Servotecnica SpA, headquartered in Nova Milanese, Italy, is one of Europe’s leading manufacturers of slip rings, rotary joints, servo drives, and motion control solutions. With decades of engineering heritage, Servotecnica has built a reputation for designing rotary transmission systems that perform reliably in the most demanding environments — from medical CT scanners and pharmaceutical filling machines to naval gun mounts and aerospace satellite tracking platforms.
What sets Servotecnica apart is their depth of expertise in custom engineering. While many slip ring suppliers offer only standard catalogue products, Servotecnica routinely designs and manufactures bespoke assemblies — combining electrical circuits, Ethernet channels, fibre optic lines, RF paths, and fluidic passages into a single integrated rotary joint tailored precisely to your application.
Their slip ring division designs and manufactures the SVTS series — a comprehensive range covering miniature capsule rings through to large-bore, ruggedised assemblies, plus specialised rotary joints for fibre optics, RF signals, and fluidic media.
Why Slip Rings Matter in Modern Automation
Slip rings are the enabling technology behind virtually every system that combines rotation with connectivity. Here are just some of the applications where they are essential:
- Robotic arms and wrists — continuous 360° rotation with uninterrupted power and communication to end effectors.
- Packaging machines — high-speed rotary filling, labelling, and capping stations requiring power and control signals through the rotating axis.
- CCTV and surveillance systems — pan-tilt-zoom camera domes transmitting HD video and power through continuous rotation.
- Wind turbines — pitch and yaw control systems transferring power and data between the nacelle and rotating blades.
- Medical scanners — CT scanner gantries transmitting high-bandwidth data and significant power through constant rotation at speed.
- Defence platforms — radar pedestals, naval gun mounts, unmanned turrets, and missile launchers requiring ruggedised, interference-free signal transfer.
- Semiconductor manufacturing — rotary stages and wafer handling systems requiring fluidic and electrical pass-through.
- Food and beverage processing — washdown-rated rotary stations in hygienic environments.
If your system rotates and needs to stay connected, you need a slip ring. The question is: which one?
How Torquety Brings Servotecnica to the UK
Torquety is a UK-headquartered motion control specialist based in London, operating as an authorised distributor and technical partner for Servotecnica SpA products. We provide:
- Local technical support — application engineering guidance from UK-based specialists who understand your industry and can help you select the right slip ring configuration.
- Fast availability — UK-accessible stock for standard product lines and direct logistics from Servotecnica in Italy.
- Custom design interface — Torquety manages the full bespoke specification process from the UK, acting as your technical bridge to the Servotecnica engineering team in Nova Milanese.
- Complete documentation — datasheets, catalogues, and CAD models for the entire SVTS range.
- After-sales support — commissioning assistance, warranty management, and replacement logistics throughout the lifetime of your installation.
Instead of navigating international procurement with an Italian manufacturer directly, Torquety gives you a single UK-based commercial relationship — one purchase order, one invoice, one point of contact.
Servotecnica Slip Ring Families Available Through Torquety
SVTS A Series: Capsule Slip Rings
The most versatile and compact series in the Servotecnica portfolio, built for miniaturisation without sacrificing signal integrity.
- Diameter: 12.4 mm to 25 mm.
- Circuits: Up to 56.
- Current: Up to 2A per circuit (signal); up to 20A (power models, e.g. SVTS A 05).
- Speed: Up to 500 RPM.
- Protection: Up to IP65.
- Contact material: Gold-based alloys for low electrical noise and extended contact life.
- Signal capability: Low-current signals, high-frequency fieldbus, and RF transmission.
Ethernet-capable model — SVTS A 03:
One of the most important models in the A series, the SVTS A 03 supports industrial Ethernet protocols including EtherCAT and PROFINET at baud rates up to 1000 Mbit/s. With up to 36 circuits and a 22 mm diameter, it is designed specifically for robotics and automation applications where high-speed data must pass through a rotating axis alongside power circuits.
Best for: CCTV domes, medical devices, robotics, compact automation, and any application where miniaturisation and signal reliability are essential.
SVTS B Series: Faston (Terminal) Slip Rings
Designed for easy maintenance and field serviceability — no soldering, no specialist tools.
- Circuits: Up to 8.
- Current: Up to 20A.
- Protection: IP65.
- Connection: Via terminals or screws — enabling rapid replacement and rewiring.
- Contact material: Gold- or silver-based alloys.
Best for: Industrial turntables, temperature sensor signal transmission, and machines where downtime for maintenance must be minimised. The terminal-based connection system means a faulty unit can be swapped in minutes rather than hours.
SVTS C Series: Through-Bore Slip Rings
The workhorse of the Servotecnica range — designed for applications requiring a central hole for cable, shaft, pneumatic tube, or optical fibre pass-through.
- Bore sizes: 3 mm to 100 mm.
- Circuits: Up to 96.
- Data capability: High baud rate fieldbus pass-through up to 1000 Mbit/s (Ethernet).
- Protection: Up to IP65.
- Speed: Up to 500 RPM.
The SVTS C Series is the most commonly specified Servotecnica slip ring for complex automation systems. The generous bore range accommodates everything from a single control cable (3 mm) to large pneumatic/hydraulic bundles or multi-cable harnesses (100 mm).

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Reliable automation components for high-performance applications.
Best for: Robotics, packaging machines, rotary indexing tables, wind turbines, radar systems, and any system needing a large number of power and signal circuits through a hollow shaft.
SVTS D Series: Ruggedised Slip Rings
Engineered for harsh environments with all-stainless-steel external components.
- Circuits: Up to 96.
- Current: Up to 20A.
- Protection: IP65 (IP67+ available on ruggedised variants).
- Material: Full stainless steel construction — resistant to chemical washdown, salt spray, and corrosive cleaning agents.
The D Series is purpose-built for environments where standard slip rings would corrode, contaminate product, or fail prematurely. The all-stainless construction ensures compliance with hygiene standards in food and pharmaceutical manufacturing.
Best for: Food and beverage processing (washdown environments), pharmaceutical manufacturing, marine applications, outdoor installations exposed to weather, and any environment requiring resistance to chemical cleaning agents.
SVTS E Series: Open Slip Rings
A minimalist, cost-effective design for high-current applications where only a few circuits are needed.
- Circuits: 3.
- Current: Up to 60A.
- Bore: Up to 60 mm.
- Design: No housing — open construction for integration into the host machine’s own mechanical enclosure.
The E Series strips away everything non-essential. With no outer housing, it is designed to be integrated directly into your own assembly, making it ideal for OEMs who want to embed a high-current rotary electrical joint within their machine frame.
Best for: Applications requiring only a few high-current circuits with a through bore, where the slip ring will be enclosed within the host machine’s own housing. Cost-effective integration for OEM applications.
SVTS F Series: Flat (Pancake) Slip Rings
Purpose-built for height-restricted installations where axial space is at an extreme premium.
- Total height: Just 40 mm.
- Through-hole: 40 mm.
- Circuits: Up to 17 signal circuits + 3 power circuits (rated 10A).
- Maintenance-free design.
When your machine design has abundant radial space but virtually no axial space, the SVTS F Series solves the problem. Its pancake profile distributes the circuits across a wide, flat disc rather than stacking them vertically — achieving full signal and power transmission in just 40 mm of height.
Best for: Robotic pedestals, compact rotary tables, AGVs, mobile platforms, and any application where overall height is a critical design constraint.
Specialised Rotary Joints
Beyond standard electrical slip rings, Servotecnica manufactures rotary joints for non-electrical media — enabling the transmission of optical data, RF signals, and fluids through rotating interfaces.
| Type | Capability | Key Specification | Typical Application |
|---|---|---|---|
| Fibre Optic Rotary Joint (FORJ) | Single- and multi-channel optical data transfer | Low insertion loss, high-speed data | Defence systems, broadcast, high-bandwidth data links |
| RF Rotary Joint | RF signal transmission | Up to 3 GHz | HD video transmission, CCTV, radar systems |
| Fluidic Rotary Union | Pneumatic and hydraulic media pass-through | Multiple fluid channels | Machine tools, semiconductor manufacturing, welding |
| Hybrid Rotary Joint | Combined power + signal + fluid in one unit | Integrated multi-media | Distributed automation, packaging, advanced robotics |
Hybrid rotary joints are particularly powerful for complex automation systems where multiple media types — electrical power, Ethernet data, fibre optic links, and pneumatic/hydraulic lines — all need to pass through a single rotating interface. Servotecnica designs these as fully integrated units, eliminating the need to stack multiple separate components.
Custom and Ruggedised Solutions
One of Servotecnica’s greatest strengths is its customisation capability. Standard catalogue products cover a wide range of applications, but many UK projects require something specific:
- Non-standard bore sizes — matching your existing shaft or housing dimensions.
- Specific IP ratings — IP67, IP68, or IP69K for subsea, washdown, or high-pressure cleaning environments.
- Unusual circuit counts — combining power, signal, Ethernet, and thermocouple circuits in a single unit.
- Integrated encoders — combining position feedback and rotary transmission in one assembly.
- Combined media channels — electrical + optical + fluidic in a single hybrid joint.
- Special materials — specific alloys, coatings, or finishes for aerospace, defence, or medical compliance.
Torquety facilitates the entire custom design process from the UK. You describe your application requirements to our team, we develop the specification with Servotecnica’s engineers in Italy, and we manage the project through to delivery — all through a single UK-based relationship.
How to Select the Right Servotecnica Slip Ring
| Your Need | Recommended Series | Why |
|---|---|---|
| Compact, miniature, high circuit count | SVTS A (Capsule) | 12.4–25 mm diameter, up to 56 circuits |
| Industrial Ethernet through rotation | SVTS A 03 or SVTS C | EtherCAT/PROFINET at 1000 Mbit/s |
| Easy field maintenance, no soldering | SVTS B (Faston) | Terminal/screw connections, fast swap |
| Large bore with many circuits | SVTS C (Through-bore) | 3–100 mm bore, up to 96 circuits |
| Harsh/washdown environment | SVTS D (Ruggedised) | All stainless steel, IP65–IP67+ |
| High current, few circuits, OEM | SVTS E (Open) | 60A, 3 circuits, no housing |
| Minimal axial height | SVTS F (Pancake) | Just 40 mm total height |
| Optical data transfer | FORJ | Low-loss fibre optic rotation |
| HD video / radar RF | RF Joint | Up to 3 GHz |
| Pneumatic / hydraulic pass-through | Fluidic Union | Multi-channel fluid rotation |
| All media in one unit | Hybrid Joint | Power + data + fibre + fluid |
| Something not in the catalogue | Custom (S) | Bespoke design to your specification |
UK Industries Using Servotecnica Slip Rings
| Industry | Typical Product | Key Requirement |
|---|---|---|
| Robotics & Cobots | SVTS A (Capsule), SVTS C (Through-bore) | Compact, Ethernet, high circuit count |
| Aerospace & Defence | Ruggedised (G), FORJ, RF Joints | IP67+, fibre optic, EMI shielding |
| Medical Devices | SVTS A (Capsule), SVTS D (Stainless) | Miniature, hygienic, reliable |
| Packaging & Food Processing | SVTS D (Stainless), SVTS F (Pancake) | Washdown, stainless steel, low profile |
| Machine Tools | SVTS C (Through-bore), Fluidic Unions | Large bore, fluid pass-through |
| Marine & Subsea | SVTS D (Ruggedised), Hybrid Joints | IP67+, salt spray, combined media |
| Wind Energy | SVTS C (Through-bore), SVTS E (Open) | Large bore, high current, remote reliability |
| CCTV & Surveillance | SVTS A (Capsule), RF Joints | Miniature, RF/HD video, continuous rotation |
| AGVs & Mobile Robotics | SVTS F (Pancake), SVTS B (Faston) | Low profile, easy maintenance |
| Semiconductor Manufacturing | Fluidic Unions, Hybrid Joints | Clean media pass-through, precision |
How to Get Started
Getting Servotecnica slip rings through Torquety is straightforward:
- Define your requirements. How many circuits do you need? What current and voltage ratings? What data protocols must pass through? What bore size? What IP rating? What environment will the slip ring operate in?
- Contact Torquety. Reach out via our website at www.torquety.com, by email, or by phone. Our team will discuss your application, recommend the optimal Servotecnica product or custom solution, and provide a formal quotation.
- Receive your quotation. We provide detailed technical quotations including part numbers, specifications, lead times, and pricing — for both standard and custom configurations.
- Place your order. Standard products ship from UK or European stock. Custom configurations are manufactured to your specification in Italy with regular progress updates managed by Torquety.
- Get technical support. From pre-sale specification through to post-delivery commissioning, our engineers are available to help integrate the slip ring into your system.
Frequently Asked Questions
Can I buy Servotecnica slip rings directly in the UK?
Yes. Torquety is the UK channel for Servotecnica SpA products. You can purchase the full SVTS slip ring range, rotary joints (fibre optic, RF, fluidic, hybrid), and custom assemblies directly through Torquety with full local support.
Can Servotecnica slip rings carry Ethernet data?
Yes. Several models (particularly the SVTS A 03 and the SVTS C Series) are designed to pass through industrial Ethernet protocols (EtherCAT, PROFINET) at baud rates up to 1000 Mbit/s with minimal signal degradation and low electrical noise.
What IP ratings are available?
Standard Servotecnica slip rings are available in IP51, IP54, and IP65. Ruggedised models (SVTS D and G Series) are available in IP65, IP67, and higher — including stainless steel washdown-rated configurations for food, pharmaceutical, and marine environments. Custom IP ratings (IP68, IP69K) are available on request.
Can I get a custom slip ring designed?
Absolutely. Servotecnica specialises in bespoke slip ring assemblies. Torquety manages the full custom specification process from the UK, including non-standard bore sizes, circuit counts, IP ratings, special materials, and hybrid electrical/optical/fluidic configurations. Share your requirements with our team and we will develop a solution with Servotecnica’s engineering team.
What is the maximum current a Servotecnica slip ring can handle?
Standard models range from 2A (signal circuits) up to 60A (SVTS E Series open slip rings). The SVTS A 05 capsule model handles 20A in a compact package. For higher currents, custom solutions are available.
What contact materials are used?
Servotecnica uses gold-based alloys for signal circuits (ensuring low contact resistance and minimal electrical noise) and silver-based alloys for higher-current power circuits. The specific alloy is selected based on the application’s current, speed, and environmental requirements.
How fast can Servotecnica slip rings rotate?
Standard models are rated for up to 500 RPM (SVTS A and C Series). Some models are rated for 250 RPM. High-speed (H Series) variants are available for applications requiring higher rotational speeds — contact Torquety for details.
What is the typical lead time?
Standard Servotecnica slip rings have typical lead times comparable to other precision industrial components. Custom configurations may require additional time depending on complexity. Contact Torquety for a precise estimate based on your specific requirements.
Do you provide CAD models?
Yes. CAD models and dimensional drawings are available for the Servotecnica slip ring range, enabling rapid integration into your 3D mechanical design environment.
Can slip rings and encoders be combined in one assembly?
Yes. Servotecnica can integrate position encoders directly into slip ring assemblies, creating a combined unit that provides both rotary signal/power transmission and angular position feedback through a single component. This reduces the number of separate parts, simplifies your mechanical design, and ensures perfect coaxial alignment. Torquety also supplies FLUX encoders, so we can help you specify a complete rotation solution combining both product lines.
Conclusion
For UK engineers and procurement teams who need reliable rotary power and signal transmission from a manufacturer with genuine custom engineering capability — Servotecnica is the answer, and Torquety is your UK partner.
Whether you need a 12.4 mm capsule slip ring for a CCTV dome, a 96-circuit through-bore unit for a packaging turret, a stainless steel washdown ring for a food processing line, or a fully bespoke hybrid rotary joint combining power, Ethernet, fibre optics, and pneumatics — the Servotecnica portfolio covers it.
All available through Torquety with local technical support, custom design management, competitive lead times, and streamlined UK procurement.
Ready to specify your next slip ring?
Contact Torquety today at www.torquety.com or request a quotation directly. Our application engineers are ready to help you find the right Servotecnica solution for your application.
Torquety is a UK-based distributor and technical partner for precision motion control components. We represent Servotecnica SpA (Italy) alongside other leading manufacturers including FLUX GmbH (Austria) for high-precision position encoders.
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