MORGAN-REKOFA

Morgan Rekofa

What is a slip ring transmitter?

Slip ring transmitters, often called rotary joints or transfer systems, are electromechanical products for the transfer of currents, electrical signals or media from a fixed to a continuously rotating part. Slip ring transmitters are used where rotational movements above 360° are required and a drag chain would hinder this. A slip ring transmitter usually consists of a slip ring assembly and a current collector – and in most cases an additional covering. The possibilities of this technology are shown on this Website. Morgan Rekofa GmbH has been designing and manufacturing current transfer systems for more than 90 years. They are distributed globally from its headquarters in Antweiler.
In addition to the many standard systems we have, with our own R&D department and working closely together with our customers, we can also design bespoke systems right from the budding idea.

A wide range of units can be combined with each other and define themselves in:

- main current
- control current
- measuring current
- data signals
- video signals
- and event media

The electrical systems are split into contacting and contactless transfer by optical fibre. In addition, these units can be combined with so-called media rotary joints and entirely encased!

Signal and data transmission

We’re setting signals!

In view of the ever increasing speeds for data transfer in today’s industrial systems, Morgan Rekofa GmbH has specialised in the continuously rotating transfer of data, measuring and video signals. The systems are modified and adapted to the particular environmental conditions of the customer’s installations and optimally protected against dust and moisture.

All leads and cables are laid in accordance with EMC requirements. Special screening is also provided depending on the on-site conditions. Customers can choose between contacting and contactless (optical) systems.

Name	Max. Transmission Frequency	MR-Produkt
ASI Bus	0,167 MBit/s	all
Can Bus	1 Mbit/s	all
Device Net	1 Mbit/s	all
Interbus	2 Mbit/s	all
Control Net	5 Mbit/s	all
Ethernet	10 Mbit/s	all
Profibus	12 Mbit/s	all
Fast Ethernet / Profinet	100 Mbit/s	optical, gold wire, SM
Sercos I, II, III	100 Mbit/s	optical, gold wire, SM
Firewire	400 Mbit/s	optical, gold wire, SM
Video signal	180 MHz	gold wire

Slip ring module system (SM)

Modular all-round system

This extremely rugged and compact system is used in all sorts of applications. It can be combined with all MR products and boasts reliability and an ergonomic design.

Systemdata

Data rate: up to 400Mbit/s
Max. rotational speed: 20rpm
Max. angular velocity: 60rpm
Total service life: up to 10 million revolutions
Contact service life: up to 7 million revolutions
Maintenance interval: up to 5 million revolutions
Other: high contact reliability through 6 contact points per contact deck

Typical applications

Car manufacturing (welding manipulators)
Construction machinery (crawler excavators)
Printing and packaging (reel splicers)
Food processing plants (fillers)

Product

System	Max. Current [ampere]	Max. Voltage [volts]	Max. No. of Poles	Max. Free Inside Diamter [mm]	Min. Casing- Cuter Diameter[mm]
SM 16-60	16	60	70	14	85
SM 16-500	16	500	70	14	85
SM 20-110	20	110	160	60	200
SM 20-400	20	400	160	60	200
SM 35-600	35	600	100	60	200

Noble metals always used for data transfer!
Higher amperages up to 100A on application!
All the versions shown here can be combined with other MR products and encased up to IP 68!

Gold wire (GD)

Reliable data transfer and high service life

High speeds and a wide variety of sizes are the hallmarks of our wire system. Standard and special sizes can be combined with all MR products and are the guarantee for reliable data transfer.

Systemdata

Data rate: up to 400Mbit/s
Max. rotational speed: up to 250rpm
Max. angular velocity: 0.5m/s
Total service life: up to 15,000km
Contact service life: up to 10,000km
Maintenance interval: maintenance-free
Other: various casing diameters from 12mm

Typical applications

Automation (6-axes robot)
Food processing plants (fillers)
Communications engineering (radar installations)
Machine tools (laser cutting devices)
Wind power stations (pitch control)

Product

System	Max. Current [amperes]	Max. Voltage [volts]	Max. No. of Poles	Max. Free inside Diameter [mm]	Min. Casing- Outer Diameter [mm]
Gold wire	80	600	200	client-specific	client-specific
GD 2,5/60	2,5	60	72	14	100
GD 10/240	10	240	48	14	100
GD 16/480	16	480	20	-	100
GD 50/500	50	500	12	14	150

Gold coating always used!
Wire diameter between 0.17 and 0.5mm!
All the versions shown here can be combined with other MR products and encased up to IP 68!

Slip rings with insulation discs (SES)

Modular construction for a wide variety of applications

These relatively flat slip rings are embedded in insulation discs, making it possible both to install them in encased hybrid distributors and to sell them separately.

Systemdata

Data rate: up to 1.5Mbit/s
Max. rotational speed: 30rpm
Max. angular velocity: 60rpm
Total service life: up to 5 million revolutions
Contact service life: up to 5 million revolutions
Maintenance interval: up to 1 million revolutions
Other: 3 contact points per contact deck

Typical applications

Food processing plants (fillers)
Dockside cranes (cable drums)

Product

System	Max. Current [amperes]	Max. Voltage [volts]	Max. No. of Poles	Max. Free inside Diameter [mm]	Min. Casing Outer Diameter[mm]
SES 20-630	20	630	dependent on current	36	228
SES 25-500	25	500	dependent on current	36	228

Silver-graphite carbon brushes always used for data transfer!
For current standstill transmission, the amperage must be multiplied by 0.7!
All the versions shown here can be combined with other MR products and encased up to IP 68!

Slip ring plate system “Pancake” (SP)

Many contact decks rotating slowly in a compact system

This very flat “Pancake” system is particularly popular for systems with confined installation space and low rotational speeds. Up to 600 contact decks can be fitted in a compact housing!

Systemdata

Data rate: up to 12Mbit/s
Max. rotational speed: 5rpm
Max. angular velocity: 20rpm
Total service life: up to 4 million revolutions
Contact service life: up to 4 million revolutions
Maintenance interval: can be maintenance-free depending on application
Other: extremely flat design

Typical applications

Car (welding rotary drum)
Turntable-ladder vehicles (fire brigade)
Revolving doors (underfloor/above floor)
Print and textile industry (reel splicers)

Product

System

Max. Current
[amperes]

Max. Voltage
[volts]

Max. No. of Poles

Max. Free inside
Diameter [mm]

Min. Casing Outer
Diameter[mm]

SP 6/1-60

Depending on actual

current, up to 600

independent contact decks

130

278

SP 7-60

224

SP 7-380

380

224

SP 10-60

152,5

SP 10-60

278

SP 10-600

600

202,5

SP 16-230

230

224

SP 16-380

400

152,5

Noble metals always used!
All the versions shown here can be combined with other MR products and encased up to IP 68!

Fibre optics

Wear-free and EMC dependable data transfer

The data signals are transmitted optically, i.e. contactless, via glass or plastic fibre. Additional repeaters can also be incorporated if the customer so wishes. Thanks to the extremely good EMC and attenuation properties, data can be transmitted trouble-free even in critical welding systems.

Systemdata

Data rate: up to 1Gbit/s
Max. rotational speed: 1,000rpm
Total service life: greatly in excess of 50 million revolutions
Maintenance interval: maintenance-free

Typical applications

Car manufacturing (welding manipulators)
Defence (remote-controlled vehicles)
Advertising (advertising pillars)

Product specification

Number of channels	System	Fibre dimension	Attenuation [dB]	Wavelenght [nm]	Attenuationvariation via ratation [dB]
1	Glass fibre F 4957 + F 5408	50/125 µm 62,5/125 µm	K1 = 3,5	800-1600	K1 = <1
2	Polymer optical fibre F 4926 ff	980 µm	K1 = 3,5 K2 = 5	660	K1 = <1 K2 = <0,5
4	Polymer optical fibre F 5075	980 µm	K1 = 3,5 K2-4 = 5	660	K1 = <1 K2-4 = <0,5
2-6	Glass Fibre F 5599	50/125 µm 62,5/125 µm	K 1-4 = 3,5	800-1600	K1-4 = <1

Depending on the data bus (Interbus/Profinet etc.), various MR repeaters are used which in some cases allow online diagnosis in the customer’s system.
All the versions shown here can be combined with other MR products and encased up to IP 68!

Power transmission

Harnessing your energy for your current requirements

We have been producing industrial carbon brushes for the reliable transfer of current since 1921. In order to have a system for distributing high currents dependably, we use a contacting design consisting of industrial carbon brushes but it may also incorporate contact rivets or even contact wires.

These can easily be combined with media distributors and contact decks for data transmission. We have, for instance, 1,250 amperes in a hybrid rotary distributor with hydraulic fluid, cooling water, power supply and data bus as standard.

Typical, general applications:

• Lightning protection on wind power stations
• Return path for high welding current
• Engine and brake currents
High current already transmitted
• 400A in encapsulated slip rings for supplying pumps
• 1,250A earthing transmission in welding manipulators

Single slip rings, space insulated (SEA)

Space-insulated slip rings for high currents

Even the highest currents found in industry can be transferred with these rugged slip rings. Graphite mixtures matched precisely to the application are the guarantee for the longest possible service life.

Systemdata

Max. current: 630A (per contact deck)
Max. rotational speed: 200rpm
Max. angular velocity: 5m/s
Total service life: up to 300 million revolutions
Contact service life: up to 100 million revolutions
Maintenance interval: 20 million revolutions
Other: contacts replaceable

Typical applications

Construction machinery (dockside cranes)
Engine construction (foundry turntables)
Packaging industry (automatic roll handling)

Product

System	Max. Current [amperes]	Max. Voltage [volts]	Slip Ring External Diameter [mm]	Max. Free Inside Diameter mm]	Min. Casing Outer Diameter[mm]
SEA 25-70	25	1.000	70	36	200
SEA 40-70	40	1.000	70	36	200
SEA 100-110	100	2.000	110	55	280
SEA 100-150	100	2.000	150	75	315
SEA 200-150	200	2.000	150	75	315
SEA 400-200	400	2.000	200	110	405
SEA 630-250	630	2.000	250	150	405

Coated slip rings and carbon brushes always used for data transmission!
All the versions shown here can be combined with other MR products and encased up to IP 68!

Single slip rings with insulation rings (SER)

Modular system with standard insulation parts

Despite the relatively compact design, the insulation rings incorporated into the SER system enable high currents and voltages to be transferred.

Systemdata

Max. current: 100A (per contact deck)
Max. rotational speed: 30rpm
Max. angular velocity: 60rpm
Total service life: up to 200 million revolutions
Contact service life: up to 100 million revolutions
Maintenance interval: up to 20 million revolutions
Other: contacts replaceable

Typical applications

Textile industry (spinning/winding machines)
Wind power stations (pitch control)

Product

System	Max. Current [amperes]	Max. Voltage [volts]	Slip Ring External Diameter [mm]	Max. Free Inside Diameter [mm]	Min. Casing Outer- Diamter [mm]
SER 25-45	25	480	45	0	100
SER 60-85	60	630	85	36	228
SER 100-85	100	630	85	36	228

Coated slip rings and carbon brushes always used for data transmission!
All the versions shown here can be combined with other MR products and encased up to IP 68!

High-current brush holders

Rugged graphite brushes for high currents

We use so-called high-current brush holders for lightning protection and transferring earthing currents from static to rotating components.

With the different configurations including even encased designs combined with other MR products (see SEA), users can choose from a large selection covering all sorts of applications. Currents in excess of 1,000A have already been transferred in hybrid rotary distributors with these products! And even 64,000A has been achieved for electroplating plants at the request of a customer.

Systemdata

Max. current: 1,000A (connected in parallel even higher)
Max. circumferential speed: 7m/s
Total service life: >100 million revolutions
Other: contacts replaceable

Typical applications

Car manufacturing (welding manipulator earthing)
Wind power stations (lightning protection)

Product

Art. No.	Max. Current [amperes]	Connection		Brush Fastening	Brush Radius [mm]	Art.Nro. Replacement Carbon Brush
F 4472	80	M6 thread	27	fixed	0	1873660RL
F 2336/1 A F 2336/2 A	200	strand	37	fixed flexible	0	1372661RL 1678434RL
F 3673 A F 3673 B	350	strand	37 74	flexiblel	0	1681460RL
F 1379/2 F 2064 B	500	M10 thread	60	fixed	80 0	1317369RL 1423649RL
F 1951 F 2065	1.000	M10 thread	115	fixed	80 0	1256831RL 1423630RL

Current collector made of copper-graphite mixtures or heaviest-duty cast bronze.
Further types of brush holders including double-leg versions for currents from 10A to 300A are available on application.

Media distributors

Continuously rotating transfer of media

Media distributors are time-tested machine components used to transfer liquid as well as gaseous media from stationary to continuously rotating elements. In addition to standard solutions, Morgan Rekofa has been developing customised media distributors since as long ago as the beginning of the 1990s.

The seals of the media distributors are made of special materials. These are adapted to the medium which is being transferred. Special sealing-free solutions are also available where high rotational speeds would cause extreme wear.

Systemdata

Transferable media:
o air/vacuum
o water
o oil
o gas
o glue/grease

Standard pressures: -1 bar (vacuum) to +400 bar
Standard connection sizes: M4 to G5"
Can be combined with all MR electrical products
Can also be supplied separately

Typical applications

Automation (turntables and robots)
Construction machinery (crawler excavators)
Vehicles (turntable ladders and slewing cranes)
Textile industry (reel splicers)

Product

Art. No.	Ident. No.	Medium	Number of Channels	Conection Size	Dimensions [mm] diameter/heigh
F 2257 DC	5019131	air	1	G1/2"	150/83
F 5382/1	5010646	air	4	G1/8"	160/65
F 5515/1	5013294	air/water	3 (1xL/2xW)	G1/2"	105/140
F 5427 B/4	5013664	water/oil	4 (2xW/2xÖl)	2xG1/2" / 2xG3/8"	180/214
F 5882/1	5022987	air/primer/cleaner	7 (2xL/4xP/1xC)	2xG3/8" / 5xG1/4"	120/393

This table shows just a small selection of our standard range. We will be happy to give you details of other designs on application. Depending on their quality, liquid media should be filtered in order to increase the life of the seals. Max. opening: 10µm.

Hybrid rotary distributor

Flexible combination of various standard systems

All the standard systems engineered by Morgan Rekofa GmbH can be combined with each other to form a “hybrid”. We attach great importance to the economical modularity of our products and thus to offering our customers the greatest possible flexibility. And that means not only for the smallest quantities produced but for large-scale production as well.

The example shows a slip ring transmitter for welding manipulators developed in close cooperation with our car end customer (e.g. Interbus or Profinet by optical fibre including the power supply and repeaters passive or active).

1 = Contactless and as a result non-wearing optical fibre
2 = Ergonomical, light but nevertheless sturdy housing
3 = Power and signal transfer
4 = Standard or customised connectors
5 = Air distributor with connecting thread e.g. G1"
6 = Internal repeater on entry and/or exit

As already mentioned on the previous pages, the standard components shown here are just a small selection of our portfolio. Our staff will be happy to help you select a slip ring transmitter matched to your particular needs.

Standards

Simpler slip rings in high quantities

Slip rings with IP protection

With the needs of the global market in mind, we developed a standard system some years ago which due to its design is mainly used in construction machinery. Thanks to prefabricated series-produced parts and the tried-and-tested, modular slip ring systems, delivery times are relatively short.

Product

Specifications	Metal Graphite	Gold	Silver
Max. voltage	500 V	500 V	60 V / 500 V
Max. current	25 A	16 A	16 A
Signal paths/data	möglich	möglich	möglich
Service life	200 Mio.	50 Mio.	5 - 7 Mio.
Max. rpm	200 rpm	50 rpm	20 rpm
Maintenance	ja	nein	ja
Maintenance interval	2 Mio.	-	1 Mio.
Protection class	IP65	IP65	IP65
Noise	<20 mOhm	<20 mOhm	<20 mOhm

Slip rings without IP protection

Given that simple slip ring transmitters without a casing are perfectly adequate for some applications, we have had the products detailed below in our portfolio for decades.
They are commonly used for supplying electricity and for transmitting simple signals in display cases, small wind turbine generators and the such.

Product

Art.No.	No. of Rings	Max. Amperage	Max. Voltage	Lengh [mm]	Diameter [mm]	Connection Diameter [mm]	Max. Rotation [rpm]
F 4105	8	8 A	400 V	110	90	12	10
F 2511	4	10 A	500 V	56	88	20	10
F 2512	7	10 A	500 V	91	88	20	10
F 2514 *	7	10 A	500 V	91	88	20	10
F 1196 B	4	25 A	500 V	84,5	105	30	60
F 1876	8	25 A	500 V	135	105	30	60
F 1876 RH *	8	25 A	500 V	135	105	30	60
F 4191	12	25 A	500 V	185	105	30	60

* Slip rings for transmitting signals coated with noble metal!

Slip ring collectors (SRK)

Fast rotation and field-proven

Slip rings or slip ring collectors are used in rotating electric machines. In the 3-phase AC motor segment this includes asynchronous motors and slip-ring rotor motors, which are among the main fields of application. Working, control, signal and measuring currents are thus transmitted from stationary to rotating components. The current is tapped by our brush holders, which are also used, for example, in the SEA and SER systems. Noble metals are used here as well for any data streams.

As different manufacturing methods are employed for the slip ring collectors, we distinguish between the following versions:

Press-fit slip ring collectors

High resistance to vibration and shock
Temperatures up to 200 degrees Celsius
High resistance to tropical conditions
Circumferential speeds of up to 40m/s
Max. diameter of the slip rings 350mm
Max. total length 420mm

Injection-moulded slip ring collectors

Max. outside diameter 100mm
Plastic with 30% glass fibre reinforcement
Steady-state temperatures of max. 120°C

Shrink-fit slip ring collectors

Dimensions up to 1 metre diameter
Current carrying capacity up to 10,000 amperes
The exposed slip rings are ventilated and cooled during rotation, which offers significant advantages in enclosed motors

Typical applications

Cable drums
Plastic, textile and printing machines (heated rolls)
Electroplating
Cable stranding machines
Shredders and crushers
Fans
Splitting machines
Mixing machines
Pumps

We will be happy to send you our current list of the standard slip ring collectors available.

Customised slip rings

Every support possible in developing your customised solution

In addition to the standard solutions presented here, we also offer our customers our design and development service from the beginning of their project. Our in-house departments for design and R&D and our test lab enable us to devise a solution for (virtually) any requirements our customers may have.

We attach great importance to working closely together with our customers and our technically skilled sales force provide every support in this respect. We will be happy to discuss your new projects with you.

Our customised designs are usually based on our standard systems or we use these systems as the basis for new developments. This very often produces synergies from tried-and-tested systems and current projects. The experience we have gained since 1921 in what is now over 15 fields of application is of course a major factor. We have already provided custom designs for rotary distributors with up to 600 independent contact

decks, combined versions with power and signal current plus data and media distributors, or, for example, 33 contact decks with a design height of less than 40mm.

All the products shown on our Website can be combined with each other and/or further developed.

We will be happy to receive your enquiry, too. Put us to the test!

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