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Cobham plc
 
 
 

Products

 

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: video, RS 422, RS 485, Profibus, land network, CAN Bus, Ethernet

• 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

Food industry

Communication

Defence

Aeronautics

Handling

Nuclear

Industrial applications

Motion control

Standard products

 

 

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 :

BLOW MOLDING MACHINERY

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 anlog 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:

• AREVA

• CEA...

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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