Design and manufacture of electrical slip ring Assemblies
Revolutionary technology…
Electrical slip rings allow an electrical link between a stationary and a rotating part, where multiple rotations and transmission by cable would be impossible.
- Standard or customized with or without bore
- Transmission of low level signals or high frequencies up to 500 MHz
- Transmission of signals: POWERLINK, SERCOS III, ETHERCAT ... , Ethernet 1Gbit, Profibus, CANopen, video HD...
- Transmission of power signals up to several hundreds of amperes
- Every dimension: from a few millimetres to several metres, open or sealed versions
- Suited to all environments with adapted materials and protection: spatial, defence, nuclear, robotic, medical, food industry, wind energy
- Need little to no maintenance using precious metal technology (up to several hundred million rotations without changing components)
- Can be used with all types of rotary joints: pneumatic, hydraulic, hyper-frequency or optical joints...
 | Wind turbines
Pitch control, generator excitation, power transmission...
Robust designs for continuous operation in harsh environments (such as on-surface or in off-shore applications)
Wide operating temperature range
Maintenance-free
Limited brush dust
No or limited lubrication
Low life cycle cost
Precious metal alloy technology for reliable signal and data transmission
Carbon brushes for reliable high power transmission
Built-in hydraulic rotary joint interface
Integrated encoder
Integrated heating for cold areas
Standard interface connectors or “plug-in coupling system” from Harting |
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 | Food Industry
Stainless steel construction
Full environmental sealing capabilities (e.g., IP 65)
Reliable power & signal transmission
Modern data communication interfaces (e.g., RS-422, RS- 485, PROFIBUS, CANbus, DeviceNet, EtherNet, etc.)
Standard off-the-shelf or customized designs (with or without through-bore)
Maintenance-free
Gold-on-gold technology for signal and data integrity
Applications :
Blowing machines
Rinsing machines
Filling machines
Capping machines
Labelling equipment
Inspection systems
Packaging equipment
Etc |
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 | Communication
Antennas, Sonars, Radars, Periscopes, Winches... Example of electrical characteristics :
3 coaxial channels
200 Mhz
Cross talk > 70dB
Attenuation < 0,5dB
TOS < 1,2dB 25 analogue signals rings
0,1mA to 2A
a few mµV to 250V
electrical noise < 10µV per mA |
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 | Defence
A number of French and foreign equipments use COBHAM SLIPRINGS parts and we have partnerships with the primary European builders. Our references :
Eads, Nexter, Dcn, Thales, Sagem, Diehl... Gun sights
Sensors
Missile guidance
Firing platforms
Winches...etc |
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 | Aeronautics
We have 40 years of experience in miniature contact for Gyros, civil and military airplanes and helicopters, missiles, drones... Airplanes and helicopters
Opened or closed slip rings and miniature brush blocks
Diameter from 2 to 20 mm
Rotation speed from 1 to 2500 rpm
Service voltage from 1 to 1000V
Intensity from 1 to 10 A
Electrical noise <1µ V/mA
Operating temperature from minus 40° to plus 110° C |
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 | Handling
Handling cranes, winches, cranes, handling arms... Example of electrical characteristics:
Power part:
number of rings 7x110A/660V
Control part:
number of rings 60x10A/220V
Noise: 15mV maxi with I=0.1A
Measurement part:
number of rings 10x10A/220V
Noise: 1mV maxi with I=0.1A |
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 | Nuclear
Used for handling equipment in control and monitoring contexts, our slip rings are completely reliable.
Waterproof, they withstand decontamination. Our references: Example slip ring:
70 signal channels 3A/220V
100% stainless steel, IP65, irradiated areas |
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 | Industrial Applications
Reliable transmission of power and data signals between a rotating and a stationary part
Standard off-the-shelf or customized designs (with or without through-bore)
Can be combined with hydraulic, air, optical or hyper frequency rotary joints
Maintenance-free (several hundred million rotations without components change or lubrication)
Applications:
Special purpose machinery
Off-shore equipment
Chemistry industry
Packaging lines
Machine tools
Robotics
Nuclear
Textile…
and more |
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 | Motion Control
Design-specific, cabling and connectors for most data busses, i.e., Profibus, Ethernet, Powerlink, CAN Open,…
Precious metal alloy technology for reliable signal and data transmission
Non-Contacting data transmission
High mechanical reliability
Robust designs (Standard off-the-shelf or customized designs - with or without through-bore)
Maintenance-free (several hundred million rotations without components change or lubrication) |
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 | Standard Products
Standard range: slip rings Ø 50mm
Standard range: slip rings Ø 75mm
Standard range: slip rings Ø 83mm
Standard range: slip rings Ø 100mm with bore 38,10mm (1,5 inch) |
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