rotarX slip rings without housing for power and signal transmission
Separate slip rings for easy and quick installation
Technical data
Protection class
IP00
Rated Current
2-10A per ring
Housing material
Without housing
Number of rings
3-15
Rotational speed
0-400 rpm
Additional services
Individual rotor / stator design
Electrical Specifications
- Number of rings: 3-15
- Nominal current: 2-10A per ring
- Max. operating voltage: 240/440 VAC/DC
- Dielectric strength: 500V @50Hz
- Electrical noise: max 10mΩ
- Insulation resistance:
1000 MΩ @ 500 VDC
2D drawing
Download detailed drawing matching the slip ring now
Catalogue
All details about our slip rings clearly arranged in the catalogue
Product selection Slip rings without housing
Artikelnummer | Länge (mm) | Aussendurchmesser (mm) | Anzahl Ringe Signal | Anzahl Ringe Power |
|---|---|---|---|---|
| 80 mm | 118 mm | - | 6 x 10A | |
| 80 mm | 118 mm | - | 6 x 10A | |
| 104.6 mm | 80 mm | - | 12 x 10A | |
| 104.6 mm | 80 mm | - | 12 x 10A | |
| 95.8 mm | 50 mm | - | 12 x 10A | |
| 95.8 mm | 50 mm | - | 12 x 10A | |
| 27.6 mm | 17.3 mm | 15 x 2A | - | |
| 17.3 mm | 14.7 mm | 12 x 2A | - | |
| 23 mm | 15.73 mm | 10 x 2A | - | |
| 15 mm | 14.5 mm | 8 x 2A | - | |
| 13.2 mm | 14.5 mm | 6 x 2A | - | |
| 10 mm | 3.5 mm | 4 x 2A | - | |
| 11.43 mm | 2.9 mm | 3 x 2A | - |
Seperate Slip Rings
Maximum installation freedom with houseless slip rings. Other designations are also split slip ring or PCB design slip ring. Open or housing-less slip rings consist only of the current-carrying components. By omitting the housing, they ensure maximum flexibility and freedom during installation. The slip rings are manufactured in standard dimensions. This makes the use of industry-standard housings and hollow shafts particularly easy. On request, the manufacturer can offer its support in the selection of suitable housing-slip ring combinations.
Seperate Slip Rings
inner diamete
brush holde
Ring carrier with cabling
Properties of houseless slip rings
By their very nature, enclosureless slip rings are extremely sensitive to contamination of all kinds. Furthermore, they are not shielded. The resulting interference currents are emitted unfiltered into the environment. Enclosure and interference suppression are therefore the responsibility of the customer. We recommend the use of enclosed slip rings only if the appropriate know-how is available for their use. As an alternative, we can offer slip rings with housing, which have extensive active and passive protection.
Use of houseless slip rings
Enclosureless slip rings are used wherever a sustainable enclosure is already available on site. They are just as popular as an addition to complex electronic circuits as they are for installation in hollow shafts. Where many sensitive components are already combined into an open assembly, slip rings can be easily installed without enclosures. These components do not pose any greater active or passive hazard than any other electronic component. By eliminating the housing, these slip rings save weight, costs and installation space. This makes their use very flexible.
Functionality of slip rings without housing
Housingless slip rings consist of a rotating rotor and a permanently installed stator. The stator is located outside the rotor. It consists of a series of brush contacts. The slip ring has a corresponding number of rings. As a rule, each brush contact is designed as a double contact. This increases the reliability of transmission. Since this type of slip ring is particularly exposed to the environment, only gold-plated copper is used as the contact material. Gold is extremely oxidation-resistant and resistant to most acids and alkalis. Regardless of whether moisture penetrates or an acidic atmosphere surrounds the slip ring, transmission is guaranteed in all cases.
The brush contacts are designed as long “legs”. This delicate construction limits the speed of the caseless slip rings to a maximum of 400 revolutions per minute. Nevertheless, they have a service life of approximately 400 million revolutions. At maximum speed under continuous rotation, this corresponds to a service life of just under 2 years.
Enclosureless slip rings have the following advantages:
- Extremely space-saving
- Extremely low weight
- Easy to integrate into existing, open systems
- Manufactured in standard sizes
- Easy to replace
- Repairable within a narrow scope
- Corrosion-resistant contacts
- Minimal wear and tear
By eliminating the housing, the components of these slip rings are limited to the essentials. This makes them very light and extremely flexible to install. The open design makes all components accessible. In contrast to many encapsulated slip rings, minor maintenance work can be carried out on caseless slip rings: cleaning or slight adjustment of brush contacts is particularly easy with these components. Thanks to their high-quality design and the use of precious metals as contact material, caseless slip rings are very durable. Like all slip rings, these components enable continuous 360° rotation.
Slip rings without housing: Use
Split slip rings are mainly used in hollow shafts. They make optimum use of the available installation space. The hollow shaft thus practically forms the housing of the open slip ring. The contacts of the rotating inner rotor can be conveniently routed to the outside through the hollow shaft. As an alternative to hollow shafts, they can also be used in open assemblies that are completely enclosed. Typical applications are as follows:
- Actuators in hydraulic or pneumatic control systems
- Three-phase motors with internal speed monitoring
- Rotary switches on control cabinets
- Extremely space-saving combinations of drive and control for drones and models
Drone construction in particular has increased the demand for open slip rings. These components ensure comprehensive, two-way signal transmission: Power supply to the rotor motors, detection of control signals for the camera and gimbal (camera positioning), monitoring of speed and other parameters are typical signal types for these devices.
Housingless slip rings ensure maximum transmission reliability with minimum weight, space requirements and costs for this dynamic and innovative technology.
Technical data
Open slip rings are available in a selection of 3-15 rings. Each ring can conduct a nominal current of 2-10 amps. The maximum operating voltage is 240 volts for alternating current and 440 volts for direct current. Of course, weaker currents are always possible.
However, the maximum dielectric strength is only 500 volts, which is only slightly above the maximum permissible DC voltage. Comprehensive electrical protection and precise planning are therefore essential for these sensitive components. Unencapsulated, the housing-free slip rings emit a maximum noise of 10 mΩ. The insulation resistance is 1000 MΩ at 500 volts DC. The rotational speed is limited to a maximum of 400 revolutions per minute. The cable length can be freely defined. Incoming and outgoing cables are colour-coded or patterned in the same way. This prevents any confusion. The temperature tolerance is between -30 °C and +80 °C. All housing-free slip rings have a specified service life of 400 million revolutions.
PCB Design Slip Ring Cleaning and Maintenance
The open design of the houseless slip rings enables easy maintenance. The corrosion-free contact material of the ring and abrasive brush is particularly easy to clean. We recommend soapy water and demineralised water for rinsing. This will also remove any limescale deposits that may be present. After cleaning, it is best to dry the slip ring with warm air. Slightly bent abrasive brushes can be re-bent. However, the maintenance possibilities are very limited due to the filigree construction of the components. Except in specific cases of need, for example after flood damage, no inspection and maintenance of houseless slip rings is necessary. As a precaution, we recommend not attempting maintenance and simply replacing the low-cost component if necessary.
How to find the optimal houseless slip rings
Housing-free slip rings are ideal components for serial assembly. However, we can supply them from a quantity of 1 and in any configuration. If you cannot find the right open slip ring in our range, please give us a call.
Customer requests and special designs are always possible. Trust us and our many years of experience in the design, manufacture and sale of slip rings. We will work with you to find the optimal slip ring for your applications. In addition to slip rings without housings, we also offer a comprehensive selection of all other slip ring types. Take a look at our wide range of products and be inspired by what we have to offer.
We are your point of contact for all types of high-quality slip rings.
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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