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High-Frequency Rotary Joints and Hybrid Solutions

SPINNER is the leading European manufacturer of high-frequency rotary joints, and has more than 40 years of experience in the industry.

Erzgiessereistrasse 33,

SPINNER is the leading European manufacturer of high-frequency rotary joints, and has more than 40 years of experience in the industry.

The SPINNER group has production facilities in Germany, Hungary and China, with more than 1,100 employees worldwide. Our subsidiaries and representatives are present in over 40 countries and provide our customers with an international network of support. Quality, flexibility and service have made the group internationally successful.

Single and multi-channel RF rotary joints and hybrid solutions

High-quality SPINNER hybrid rotary joints are mainly used in military radar systems, fire control systems, rotating vehicle-mounted camera systems and in mobile battlefield communication systems.

In areas such as ATC (Air Traffic Control) and commercial SatCom, for airborne, naval and ground based solutions SPINNER’s rotary joints are widely used as well.

Six-channel inductosyn rotary joint.
Three-channel coaxial rotary joint.
Six-channel rotary join with slip ring and encoders.
Nine-channel rotary joint with slip ring.
RPA - Argentine Primary 3D Radar.
20-channel LWL rotary joint.
Single mode single-channel fiber optic rotary joint.
Single-channel Waveguide R100 rotary joint, L-style.
Dual-channel Ethernet module.

The following main components are designed and manufactured by SPINNER at our production facility in Westerham, Germany, and we are able to supply:

  • Single or multi-channel coaxial rotary joints
  • Waveguide single or multichannel rotary joints
  • Fiber optical single or multichannel rotary joints
  • Contactless Fast Ethernet and Gigabit Ethernet
  • Media joints for fluids and air
  • Contactless power transmission

The combination of the above mentioned groups of transmission technologies and encoders are so called hybrid rotary joints combined with slip rings. This enables SPINNER to offer complete system solutions from a single source. These solutions are achieved by the utilisation of a highly motivated team of research and development engineers, equipped with state-of-the-art design and simulation tools.

CNC turning and milling centres

SPINNER in-house manufacturing capabilities include:

  • CNC controlled turning and milling centers
  • Electroplating for all common surfaces
  • Mechanical test equipment (covering sub-micron range to ensure outstanding quality)
  • Climate and salt spray chambers for environmental tests
  • Shock and vibration tests, as well as testings in co-operation with external institutes

This high-quality standard guarantees a frictionless operation in extreme situations.

FORJ (fibre optical rotary joint) and gigabit ethernet transmission

These are the most commonly used combinations for next generation high-performance radar and data transmitting systems. Normally, one or two high-power channels (coax/waveguide) are combined with several low-power channels. Slip ring modules for power supply and data transmission are additionally integrated. Due to constantly increasing data rates, optical rotary joints and contactless Gigabit Ethernet transmission are becoming more important.

SPINNER solutions are widely spread from the standard 20 channel FORJ to smallest available 6 channel FORJ on the market, down to a single channel FORJ that can be integrated into the inner conductor of a coax channel with an outer diameter of only 3mm.

Customised solutions including media joints

SPINNER delivers a large variety of rotary joint combinations according to customer specifications in all varieties, frequency bands and sizes.

The integration of media joints and contactless Gigabit Ethernet ensure that SPINNER solutions are able to provide all requirements of any radar system.

Rotary joints maintenance and repair

As an additional service, SPINNER offers repair and maintenance of all rotary joint brands.

SPINNER offers as well connectors, special phase adjustable cable assemblies for phased array systems, power combiners for radar transmitters and many others.

The quality assurance (QA) system at SPINNER has been certified according to DIN EN ISO 9001. The results of our endeavors are documented in our DIN EN ISO 14001 certified environmental management system.

SPINNER Offers Success with Precision

Telephony, radio and internet using satellites - the ever increasing uses in the SatCom industry combined with the increasing demands on transmission capacity and operating conditions have led to a considerable growth in available dual channel rotary joints in the past few years.

22 April 2014

SPINNER Releases its S³ Technology – Slim Sized Slip Ring

SPINNER is expanding its solutions in the field of rotary joints for satellite communications to include a further component: a compact slip ring with very thin walls now complements the range of standard couplings for all fields of use.

7 April 2014

SPINNER Creates First Media Joint

At the end of 2013, the first media joint made by SPINNER was delivered. This milestone is a very important step for SPINNER regarding its development from supplier of high frequency (RF), optic and non-contacting signal transmitters to a system provider for rotary joints.

20 January 2014

SPINNER Releases New Generation Fiber Optic Joints

In our magazine SPOTLIGHT 04/2012, the new generation of fiber optic joints by SPINNER was presented. In the meantime, the family has grown further and optimum solutions are available for virtually any application.

13 January 2014

Spinner at DSEi

SPINNER, a global leader with 65 years of experience in developing and manufacturing state-of-the-art RF components, will exhibit at DSEI 2013 in London from 10-13 September 2013

9 September 2013

Rotary Joints for SatCom – Extension of Product Portfolio

In the last SPOTLIGHT issue, two new high-quality L-shaped R120 waveguide rotary joints (BN 635725 and 635726) with a design particularly adapted to the use with Ku-band satellite communication systems within a tight budget were presented.

11 July 2013

SPINNER Produce Ku-Band Rotary Joints against Short Period and Tight Budget

In the summer of 2012, SPINNER was assigned a contract for the development and construction of a dual channel waveguide coax rotary joint in Ku band. The challenging thing about this task wasn't the best RF attributes, as usual, but a shortened period of development and a tight budget.

10 July 2013

Hybrid Rotary Joints

Modern radar systems need an exceptionally wide-range of transmission technologies for the requirements on the antenna.

4 October 2012

New S-band Power Combiner

With primary radar operation short pulses are usually emitted with very high power. Reflection echoes are identified during the pulse intervals in receive mode. Objects that find themselves in the radar beam can be detected and identified using this.

11 January 2012

A New Spin on Hybrid Rotary Joint Assemblies

With miniaturisation progressing in all areas of component design, SPINNER is changing the way in which modern radar systems are built. A more compact design for the core component of the radar, the rotary joint assembly, is increasingly in demand. Most radars have radio frequency (RF) amplifiers

20 July 2011

Pre-Assembled Phase Adjustable RF Cables for Feed Networks of Radar Systems

In order to trigger the individual radiating elements of radar systems in the correct electrical phase, SPINNER have developed special adjustable connectors. The customer is given increased flexibility for installation thanks to the option for electrical adjustment of the connectors within the ra

20 July 2011

First 14-Channel Rotary Joint for FLR Radar Delivered

Last year SPINNER received a contract for the development of a 14-channel rotary joint slip ring assembly for the flight level radar (FLR) and delivered it as planned within one year. The overall Akash (CAR, FLR, WLR) is highly IT-integrated, i.e. the rotary joint must be highly integrated and co

25 August 2010

Protection Systems in Afghanistan

SPINNER will supply rotary joints and slip rings to protect the German forces in Afghanistan against missile attacks. As a first step to renew the field army‘s air defence capabilities (“SysFla”) the budget committee of the German Bundestag has decided to purchase two NBS C-RAM systems

11 November 2009

SPINNER Books Order for Rotary Joint Designed for the ASR-S Radar of EADS

SPINNER has received an order from the Business Division EADS Defence and Security of EADS Deutschland GmbH, of Ulm, to supply 6-channel rotary joints with integrated slip ring and Induktosyn angle sensor for the solid-state air traffic control radar ASR-S. Due to an innovative concept for integ

11 November 2009

14-Channel Rotary Joint for Flight Level Radar (FLR)

SPINNER has received an order for a 14-channel rotary joint slip ring assembly for the Flight Level Radar (FLR). The whole Akash system (CAR, FLR, WLR) is highly IT-integrated, i.e. the rotary joint needs to be highly integrated and compact as well. With 14 RF channels, 151 slip ring ways for pow

11 November 2009

Rotary joints for SatCom

Modern mobile satellite communication systems provide bidirectional broadband network access for moving ground, maritime and airborne terminals. Applications enabled by mobile SatCom systems include broadband Internet access, video conferencing and data transmission. Currently such systems common

11 November 2009


Erzgiessereistrasse 33

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