Slip Rings
Precision rotary interfaces designed for demanding industrial, medical, and aerospace systems.
High-reliability components that transmit electrical power, sensitive signals, and high-speed data across continuously rotating joints. Represented in the UK by Torquety, Servotecnica solutions eliminate wiring stress and enable unrestricted 360-degree rotation.
Rotary Interfaces Portfolio
Capsule Slip Rings
Precision instrumentation in surgical robotics, video surveillance, and scanner modules requires continuous rotation of sensor arrays. Transmitting clean analog and high-frequency digital signals through compact, rotating joints is essential to prevent data corruption.
Standard capsule designs often suffer from high dynamic electrical noise due to mechanical instability or generic copper contact wear. The SVTS A Series solves this by utilizing precision gold-on-gold contact technology, which limits contact resistance to under 10 mΩ and protects data integrity over a long operating life.
Mechanically, these capsule joints are available in diameters from 12.4 mm to 25 mm with weights ranging from 20 g to 150 g. They support up to 56 circuits and offer specialized configurations like the SVTS A 06, which provides an integrated 3 GHz RF coaxial channel for HD-SDI digital video.
| Model | Outer Diameter | Circuits | Max Current | Max Speed | IP Grade |
|---|---|---|---|---|---|
| SVTS A 01 | 12.4 mm | Up to 18 | 2 A (peak) | 500 rpm | IP51 / IP65 |
| SVTS A 02 | 15.5 mm | Up to 24 | 2 A (peak) | 500 rpm | IP51 |
| SVTS A 03 / A 04 | 22 mm / 25 mm | Up to 36 (A03) / 56 (A04) | 2 A (Ethernet opt.) | 500 rpm | IP51 / IP65 |
| SVTS A 05 | 22 mm | 3 | 20 A | 250 rpm | IP51 / IP65 |
| SVTS A 06 / A 07 | 22 mm / 25 mm | Up to 24 (A06) / 36 (A07) + RF | 2 A + 3 GHz RF | 100 rpm | IP51 |
Faston & Terminal Slip Rings
In automated process lines and packing machinery, thermal sealing and sensor monitoring operate under constant rotation. Standard wiring in these setups is subjected to constant stress and high temperatures, demanding quick-change components to prevent expensive line downtime.
Soldering signal lines on site often introduces thermal offset errors (EMF) that corrupt thermocouple readings. The SVTS B Series addresses this by featuring solderless Faston or screw terminal connections, allowing fast maintenance and precise temperature signal transmission without EMF noise.
Mechanically, the series utilizes long-life multi-fiber brushes, supports up to 8 circuits with a current capacity of 20 A at 400 VAC/VDC. It features high-precision stainless steel bearings and an optional IP65 washable rating designed to withstand food-grade washdown cycles.
| Model | Outer Diameter | Circuits | Max Current | Connection Style | IP Grade |
|---|---|---|---|---|---|
| SVTS B 01 | 32 mm | Up to 5 | 20 A / 14 A | Faston terminals | IP51 / IP65 |
| SVTS B 02 | 45 mm | Up to 8 | 20 A | Faston terminals | IP51 / IP65 |
| SVTS B 03 | 77 mm | Up to 5 | 20 A | Screw connectors | IP65 (installed) |
| SVTS B 04 | 70 mm | Up to 5 | 20 A | Screw connectors | IP51 |
Through-Bore Slip Rings
Automated packaging carousels, medical CT scanners, and rotary tables require passing mechanical shafts, pneumatic lines, or cooling pipes through the center of a rotating assembly. Managing both electrical transmission and fluid lines along the central axis is a core mechatronic design layout constraint.
Solid-shaft slip rings block the axial center, forcing complex and bulky external cable routing layouts. The SVTS C Series solves this by utilizing a hollow-bore design (inner diameters from 3 mm to 100 mm), allowing hydraulic lines, shafts, or fiber optic channels to pass directly through the core.
The C Series uses multi-fiber brush technology to transmit power (up to 20 A at 600 V) and high-speed data (Gigabit Ethernet and fieldbuses up to 1000 Mb/s). It supports up to 96 circuits and reaches rotation speeds up to 1000 rpm.
| Model | Hollow Bore (ID) | Outer Diameter | Circuits | Power/Signal Current | Max Speed |
|---|---|---|---|---|---|
| SVTS C 01 | 3 mm / 4.5 mm | 17 mm / 22 mm | Up to 8 | 2 A | 1000 rpm |
| SVTS C 02 | 3 mm / 4.5 mm | 17 mm / 22 mm | Up to 12 | 2 A | 1000 rpm |
| SVTS C 03 | 12.7 mm | 54 mm | Up to 24 | 5 A | 500 rpm |
| SVTS C 04 / C 05 | 25.4 mm / 38.1 mm | 78 mm / 99 mm | Up to 48 | 15 A (power) / 2 A (signal) | 400 rpm |
| SVTS C 06 / C 07 | 50 mm / 60 mm | 120 mm / 135 mm | Up to 72 (C06) / 96 (C07) | 20 A (power) / 5 A (signal) | 300 rpm |
| SVTS C 08 to C 11 | 70 mm to 100 mm | 155 mm to 203 mm | Up to 96 (C08-C10) / 80 (C11) | 20 A (power) / 5 A (signal) | 200 rpm |
Ruggedized Stainless Steel Slip Rings
Industrial machinery in food processing, marine actuators, and chemical plants operate in environments exposed to moisture, washdowns, and corrosive agents. Standard enclosures fail rapidly under these conditions, causing water ingress and electrical short-circuits.
Basic sealed slip rings fail to withstand sustained chemical and moisture exposure over long operational cycles. The SVTS D Series provides standard IP65 protection by combining tight cable glands (PG type) with an external housing constructed entirely from AISI 304 or AISI 316 stainless steel.
Mechanically, the series supports up to 96 circuits with current ratings up to 15 A power at 600 V and 2 A signals. The integration of multi-fiber precious metal contacts ensures signal stability under heavy mechanical vibration and a design life of up to 100 million rotations.
CASE STUDY: WINGSAIL SYSTEM INTEGRATION A leading European maritime customer integrated a customized SVTS D Series slip ring at the base of a rigid fixed wingsail mast. The tailored solution successfully managed over 150 signal and power circuits, motor control lines, and a high-speed fieldbus, protected inside an IP65 marine-grade stainless steel shell.
| Model | Outer Diameter | Circuits | Max Power Current | Max Voltage | Housing Material |
|---|---|---|---|---|---|
| SVTS D 01 | 75 mm | Up to 48 | – | 240 VAC/VDC | Stainless Steel / Aluminum |
| SVTS D 02 | 87 mm | Up to 96 | 15 A | 600 VAC/VDC | Stainless Steel |
Open Frame Slip Rings
Heavy-duty industrial machinery, such as wind turbine yaw drives and large rotating display columns, requires high-current electrical transmission. Design engineers face tight budget and weight targets, where fully enclosed slip rings add unnecessary cost.
Enclosed slip rings are over-engineered for installation inside pre-sealed, protected machine cavities. The SVTS E Series features an open, housing-free frame, allowing cost-effective and direct integration into clean internal machine cavities without sacrificing performance.
The E Series features a central hollow bore (ranging from 25.4 mm to 60 mm) and exactly 3 high-current power circuits rated up to 60 A at 400 VAC/VDC. It utilizes multi-fiber brushes, running on precious metal rings, to achieve maintenance-free operation.
| Model | Hollow Bore (ID) | Outer Diameter | Circuits | Current Rating | Operating Temp. |
|---|---|---|---|---|---|
| SVTS E 01 | 25.4 mm (1″) | 74 mm | 3 | 20 A / 40 A | -20°C to +80°C |
| SVTS E 02 | 38.1 mm (1.5″) | 94 mm | 3 | 20 A / 40 A | -40°C to +80°C |
| SVTS E 03 | 50.0 mm | 115 mm | 3 | 20 A / 40 A / 60 A | -40°C to +80°C |
| SVTS E 04 | 60.0 mm | 130 mm | 3 | 20 A / 40 A / 60 A | -40°C to +80°C |
Flat Pancake Slip Rings
Height restrictions are the primary mechanical bottleneck in revolving doors, base tables, and medical histology analysis equipment. Standard cylindrical slip rings require significant axial depth, making them impossible to integrate when vertical clearance is minimal.
Generic flat slip rings suffer from high radial wear, causing signal noise and short lifespans. The SVTS F Series utilizes a flat pancake geometry (only 40 mm to 45 mm tall) with multi-fiber brush technology that ensures low wear, stable contact resistance, and a long maintenance-free service life.
This flat-profile series features a 40 mm central through-bore and supports up to 17 signal circuits (5 A) and 3 power circuits (10 A) at 240 VAC/VDC with a lifespan of up to 100 million cycles.
CASE STUDY: MEDICAL ONCOLOGY DIAGNOSTICS For histological sample analysis, a medical systems manufacturer integrated a custom ultra-flat pancake slip ring (55 mm ID / 125 mm and 170 mm OD) to power heating plates up to 8 A and transmit temperature sensor signals, successfully meeting CE, RoHS, and UL compliance.
| Model | Hollow Bore (ID) | Outer Diameter | Total Circuits | Configuration | Total Height |
|---|---|---|---|---|---|
| SVTS F 01 | 40 mm | 180 mm | 20 | 3 Power (10 A) + 17 Signals (5 A) | 45 mm |
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