rotarX miniature hybrid slip rings for pneumatics and hydraulics
Compact hybrid slip rings 36 mm – pneumatics/liquid + electrics
Technical Specifications
Protection class
IP51 (higher on request)
Rated Current
2A per ring
Housing material
Aluminium
Number of rings
6 or 12
Rotational speed
0-300 rpm
Additional services
Individual cable and media lines
Electrical Specifications
- Number of rings: 6 or 12
- Nominal current: 2A per ring
- Max. operating voltage: 440 VAC/DC
- Dielectric strength: ≥500V @50Hz
- Electrical noise: max 10mΩ
- Insulation resistance:
1000 MΩ @ 500 VDC - Media: Compressed air (pneumatics), vacuum, hydraulic oil, return oil, water, hydrogen, nitrogen, steam, cooling water, coolant, hot water, acids, bases and much more
2D drawing
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Catalogue
All details about our slip rings clearly arranged in the catalogue
Product selection Miniature pneumatic slip rings
Safe and precise transmission of electricity, liquids and compressed air
The miniature hybrid slip ring is a multifunctional slip ring. This means that it can reliably transmit not only power and (Ethernet) signals, but also media such as fluids, gases and compressed air. This slip ring therefore combines the function of a rotary union and a classic electrical slip ring. The biggest difference to our rotary unions is that they are exclusively suitable for media transmission and can be equipped with up to 24 different channels. The compact hybrid slip ring has a maximum of four channels for compressed air, hydraulic oil and other fluids, as well as gases. In addition, it can transmit data, Ethernet signals such as Profinet and electricity. Another combination of both worlds is offered by the hybrid electrical rotary union with up to 16 channels for media transfer and a maximum of 96 rings for power and signal transmission. These are, of course, much larger and not suitable for the same areas as this miniature slip ring.
Until now, these slip rings were only available in large and heavy formats. rotarX now offers these powerful components in a compact version with a diameter of 36 mm. This opens up completely new design possibilities for users, especially designers of hydropneumatic systems and hydraulic components.
Miniature Pneumatic/Liquid + Electric Hybrid
Different housing materials to choose fro
Up to 12 electrical cable
Connection sizes for media feed-through
Radial bores for media connections in the stato
Radial bores for media connections in the roto
Definition Miniature Hybrid Slip Ring
Slip rings have the task of converting a linear, rigid energy line into a rotating movement – or vice versa. Most slip rings work with electrical contacts. With these, the transmission of the electric current is relatively simple via sliding contact surfaces. When transmitting media-bound forms of energy such as gas or liquid, however, much greater challenges have to be overcome. Nevertheless, these sophisticated components are indispensable in many machines. They offer convincing quality with compact installation dimensions.
Functionality Miniature Hybrid Slip Ring
A miniature hybrid slip ring is a hybrid component that can conduct two different forms of energy: Electrical voltage and a medium (gas or liquid). This usually means that compressed air or liquid is passed through the miniature hybrid slip ring. However, low-pressure supply lines, such as oxygen or inert gas, can also be routed through this rotary joint. The electrical part is comparatively simple: it consists of incoming power lines, each of which passes a pair of ring brushes and is led out of the slip ring again on a cable of the same colour. In addition, however, there are one or more hydraulic or pneumatic connections on the slip ring. These use the space between the stator and the rotor. The gas or liquid is passed through a system of channels.
Advantages of the Miniature Hybrid Slip Ring
Miniature hybrid slip rings offer the following advantages:
- Low unit price
- Wide range of design options
- High reliability
- Low weight
- Low installation space requirements
- Easy installation
A rotary union that can simultaneously transmit gas pressure, liquid and electrical energy is an enormous relief for designers. They practically only have to design up to the transfer points and can leave this critical point to a tested and proven series component. In addition, the hybrid design saves space. This makes it ideal for rotary connections where space is limited. Finally, the miniature design is also very low in mass. The low weight not only has energy-saving properties in vehicles and aircraft. It also has great advantages in dynamically exposed positions. Robotic arms equipped with these lightweight components at intermediate joints generate significantly lower impulse forces when accelerating and decelerating from rotary movements. This protects the entire structure and extends the service life of the bearings in your application.
Selection of miniature hybrid slip rings
We offer miniature hybrid slip rings with six or twelve rings for the transmission of signal current. Each ring is designed for a rated current of two amperes. The maximum working voltage is 440 volts, both for direct current and alternating current. The slip rings tolerate voltage peaks of about 500 volts at 50 hertz frequency. The electrical noise is limited to 10 milliohms. The maximum insulation resistance is 1000 megohms at 500 volts DC. There is a choice of one to four passages for gas pressure or liquid transmission. Each hybrid slip ring allows a rotation of up to 300 revolutions per minute. The contact material for electrical transmission can be selected between silver-silver and gold-gold. This ensures corrosion-free operation. The standard diameter of the slip ring is 36 millimetres. Stainless aluminium is used as the housing material. The standard protection class is IP 51, which provides sufficient protection against penetrating dust and splash water. Higher protection classes are available on request. The temperature range of each miniature hybrid slip ring is -30 °C and +80 °C.
Application and use of the miniature hybrid slip rings
Miniature hybrid slip rings are used wherever electrical energy, gas pressure and liquids need to be conducted through a rotating connection. These do not always have to be pressurised media. These components also ensure the passage of supply lines. Miniature hybrid slip rings are particularly popular for conducting lubricants such as low-viscosity oils or industrial water as a cooling medium. This makes them ideal for connection to grease nipples or central lubrication systems. Please feel free to contact our service department for advice.
The larger versions of these slip rings are mainly used in the construction of wind turbines and construction machinery. They support the transmission of hydraulic forces for pitch adjustment of the rotor blades or for the transmission of hydraulic pressure to the rotary motors of a chain drive. The miniature hybrid slip rings can effectively support their larger counterparts in these positions. In addition, these components have proven themselves in the construction of industrial robots or automated placement, removal and feeding systems. They allow a variety of axes of movement and can ensure a targeted supply of lubricants and operating fluids.
Another interesting application for miniature hybrid slip rings is the construction of automatic inert gas welding machines. In this application, the media line is used to conduct inert gas. The slip ring supplies power to auxiliary units, such as lighting, sensors or cameras, at the same time as the inert gas is supplied to the actuator. This enables extremely compact, lightweight and highly versatile systems with a wide range of applications.
Your way to your miniature hybrid slip rings
We are happy to supply you with the right miniature hybrid slip rings for your applications. If you are not sure which products are ideal for your challenges, please contact us. These components are extremely flexible and versatile, so use our technical advice to project the optimum slip ring body for your application. For quick enquiries, our telephone hotline is at your disposal. You can use our contact form to describe your request in detail. If you would like to send us further information in the form of drawings, please send us an e-mail. Our service team will deal with your request immediately and get back to you as soon as possible.
Practical slip ring solutions for your application
Product catalogue for all slip rings
Find out about the different slip rings in our current overview. Transmission technology for complex industrial and safety-relevant applications form the core of our product range. All products can be individually adapted to the applications in order to offer you added value. Premium engineering - that is our claim for every single product we manufacture. We would like to convince you of this.
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