Slip rings
BGB Modular and barrel slip ring assemblies
Packaged barrel and modular slip ring assemblies for slow to medium speeds, carrying power up to 30 A and signals, built with mounting, termination and sealing for continuous rotation in industrial and wastewater plant.
Key specifications
| Current per circuit (max) | 30 A |
|---|
Summarised in our own words from BGB (family-owned; legal entity name not stated on its website)'s published data; series maxima, individual models vary. Last checked 2026-10-30. Source 1 · Source 2
Specify Motion is not affiliated with BGB (family-owned; legal entity name not stated on its website). BGB and Modular and barrel slip ring assemblies are used only to identify the product. Comparisons use published figures; always confirm against the current datasheet.
Typical applications
Alternatives that meet or exceed these figures
Engineers often come to us with a BGB part number and leave with an alternative that is easier to source, quicker to deliver or a better fit for the machine. These 3 series from our supply network are the closest match on published figures.
High-circuit-count slip rings that carry hundreds of mixed power, digital, analogue, fibre and RF channels in one unit.
| Published maximum | Modular and barrel slip ring assemblies | Multi-channel Slip Ring |
|---|---|---|
| Circuits | — | 500 |
| Current per circuit | 30 A | 30 A meets or exceeds |
| Speed | — | 480 rpm |
| Voltage | — | 700 V |
| Bore | — | 40 mm |
Slip rings using heat-resistant materials for extreme temperatures from -55°C to +250°C, such as hot rollers and heating plant.
| Published maximum | Modular and barrel slip ring assemblies | High & Low Temperature Slip Ring |
|---|---|---|
| Circuits | — | 48 |
| Current per circuit | 30 A | 50 A meets or exceeds |
| Voltage | — | 500 V |
| Bore | — | 88 mm |
A small analogue power-and-signal slip ring with FASTON quick-connect terminals for fast wiring in dusty, high-cycle machinery. Optional IP65 sealing.
View HR Series Faston Type Slip Ring →Figures are the highest published for each series and are not always measured the same way. A higher figure is not automatically a better choice: mounting, duty cycle, feedback, connectors and approvals matter too. An engineer will check the fit against your application before recommending anything.
What a slip ring is
This group covers slip rings that do not fit a single standard format, including modular and split designs, contactless capacitive or optical data rings, temperature-rated units, quick-connect terminal designs, very high circuit counts and application-specific assemblies for wind turbines or packaging. All solve the same problem: transferring power, signals or data between stationary and rotating parts of a machine. What differs is the construction, which may be a split housing, a modular stack, a non-contact data path or a special material set.
When engineers choose a slip ring
Engineers look at these designs when a standard capsule, through-bore or pancake unit does not fit the job. Split rings suit retrofits onto existing shafts. Contactless data rings suit high data rates or long life without wear. Modular units allow circuit counts to change between machine variants. The trade-offs are cost, availability and, for custom designs, longer lead times and qualification. Match the construction to the real constraint, whether that is installation, data, temperature or circuit count.
How to specify the BGB Modular and barrel slip ring assemblies
Send these with your enquiry and an engineer can confirm the right Modular and barrel slip ring assemblies variant or an equivalent:
- What makes the application non-standard: installation, data, temperature, circuit count or format
- Circuits, current and voltage (A, V)
- Data protocols and rates
- Speed (rpm) and expected life (revolutions)
- Bore, envelope and mounting (mm)
- Temperature range (°C) and IP code
- Terminations, such as flying leads, connectors or quick-connect tabs
Common mistakes to avoid
- Choosing a special design when a standard type with minor changes would do
- Not stating the actual constraint, so the supplier offers the wrong format
- Assuming contactless data channels also carry power
- Underestimating lead time for custom or modular builds
BGB Modular and barrel slip ring assemblies: frequently asked questions
What is the BGB Modular and barrel slip ring assemblies?
Packaged barrel and modular slip ring assemblies for slow to medium speeds, carrying power up to 30 A and signals, built with mounting, termination and sealing for continuous rotation in industrial and wastewater plant. Published series figures include current per circuit 30 A. It is made by BGB (family-owned; legal entity name not stated on its website); Specify Motion can help source it or propose an equivalent.
Who makes the BGB Modular and barrel slip ring assemblies?
The BGB Modular and barrel slip ring assemblies is made by BGB (BGB (family-owned; legal entity name not stated on its website)) and is listed here for engineers comparing options. Specify Motion is not affiliated with BGB (family-owned; legal entity name not stated on its website); brand names are used only to identify the product.
What is the current per circuit of the BGB Modular and barrel slip ring assemblies?
The published series maximum current per circuit is 30 A. Individual models and sizes in the Modular and barrel slip ring assemblies 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.
Is there an alternative to the BGB Modular and barrel slip ring assemblies?
Yes. On published figures, Multi-channel Slip Ring and High & Low Temperature Slip Ring are the closest match from our supply network. An engineer confirms the fit against your application before recommending anything.
What is a split slip ring?
A split slip ring has a rotor and housing made in two halves, so it can be fitted around an existing shaft without removing the shaft or its bearings. It suits retrofits and large machines where disassembly would be costly. Expect tighter installation tolerances and possibly a lower speed rating than a one-piece unit.
What is a contactless slip ring?
A contactless slip ring transfers data, and sometimes power, across rotation without sliding contacts, using capacitive, inductive or optical coupling. There is no wear on the data path, so life is long and very high data rates are possible. Contactless power is usually limited, so many designs combine a contactless data channel with conventional power rings.
Further reading: How to select a slip ring · How to specify a slip ring · Slip rings
Other slip rings series
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Tell us how you use the BGB Modular and barrel slip ring assemblies: the load, speed, duty and environment. Our engineers will confirm whether it is still the right part, find it for you, or propose an alternative that fits better.
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