Large-diameter slip rings
Large Size Slip Ring
Large through-hole slip rings for heavy outdoor plant, with through holes quoted up to 1000 mm and long service life.
Key specifications
| Circuits (max) | 35 |
|---|---|
| Current per circuit (max) | 50 A |
| Voltage (max) | 500 V |
| Bore (max) | 1,000 mm |
| Rated life (revolutions) | 50,000,000 |
Series ranges as published; individual models vary. The full datasheet, drawings and CAD models are available on request.
Options
- outdoor-rated protection
Typical applications
What a large-diameter slip ring is
A large-diameter slip ring is a rotary joint with a bore or ring diameter typically of several hundred millimetres up to a few metres, built for very large rotating structures. The rings are often fabricated in segments or machined as drums or platters, with brush blocks mounted around the stationary frame. Because the structure is large, they are usually designed to match the customer's machine and may integrate power, signal, data, fibre or contactless channels and media passages in one assembly.
When engineers choose a large-diameter slip ring
Choose a large-diameter design when the rotating structure has a big central opening, such as CT gantries, large turntables, radar pedestals, cranes and slewing platforms, or when cabling and services must pass through a wide bore. The trade-offs are cost, lead time and high surface speed even at modest rpm, which limits speed and raises brush wear. Mechanical runout of the machine becomes significant at this scale, so the slip ring is usually designed alongside the structure rather than chosen from a catalogue.
How to specify the Large Size Slip Ring
Send these with your enquiry and an engineer can confirm the right Large Size Slip Ring variant:
- Bore and outer diameter limits (mm)
- Speed and surface speed (rpm, m/s)
- Power circuits, current and voltage (A, V)
- Data rates and channels, including contactless or fibre
- Structure runout and flatness at the mounting faces (mm)
- Environment: outdoor exposure, IP code and temperature (°C)
- Segmentation for installation and maintenance access
Common mistakes to avoid
- Specifying late, when the structure leaves too little room or too much runout for the slip ring
- Using the catalogue rpm without checking surface speed at the actual diameter
- Not planning how the ring will be lifted, installed and serviced in place
- Leaving out data rate growth, so the channel count is outgrown within the machine's life
Large Size Slip Ring: frequently asked questions
What is the Large Size Slip Ring?
Large through-hole slip rings for heavy outdoor plant, with through holes quoted up to 1000 mm and long service life. Published series figures include circuits 35, current per circuit 50 A, voltage 500 V, bore 1,000 mm. It is available through our supply network, and our engineers can confirm the right variant for your application.
Who makes the Large Size Slip Ring?
The Large Size Slip Ring is part of a range available through our supply network. Send us your requirement for pricing, lead time, datasheets and CAD.
What is the circuits of the Large Size Slip Ring?
The published series maximum circuits is 35. Individual models and sizes in the Large Size Slip Ring range vary, so check the exact variant against your duty cycle, mounting and environment, or ask our engineers to confirm the right size for you.
Why do large slip rings have lower speed ratings?
Surface speed is diameter multiplied by rotational speed, so a ring a metre across turning at 60 rpm already runs faster at the contact than a small capsule at a thousand rpm. Brush wear, heat and contact bounce all rise with surface speed. Large-diameter designs manage this with brush materials, contact force and runout control, but their rpm ratings are typically far lower.
How is high-speed data passed through a large-diameter slip ring?
Contact rings work for slower networks, but for very high data rates, such as CT image data, large rings often use contactless capacitive, inductive or optical transmission around the circumference. A fibre optic rotary joint can also be placed on the axis if the centre is accessible. State the data rate and latency requirements early, as they shape the whole design.
Further reading: How to select a slip ring · How to select a fibre optic rotary joint · Slip rings
Often compared with
Engineers specifying this series often compare it with:
Spec builder
Configure Large Size Slip Ring
Select every part you need, answer the questions an applications engineer would ask, and see your summary before we ask for any details.
- 1Products
- 2Performance
- 3Environment
- 4Volumes
- 5Your spec
Engineer support
Need Large Size Slip Ring or a complete system around it?
Tell us what you need, whether it is this part, an equivalent or a complete axis built around it. An engineer will review your requirements and reply, normally within one working day.
- Reviewed by an engineer, not an autoresponder
- Like-for-like and better-fit alternatives
- Standard, modified and custom options
Prefer to configure it? Use the spec builder.