Rugged and military slip rings
Moog Vehicular / turret slip rings (VSR-2000, VSR-3733, VSR-4906, VSR-4994, VSR-6057, VSR-6772, VSR-7001, AC3497, AC6033)
Environmentally sealed, EMI-shielded through-bore slip rings for armoured vehicle turrets, combining high-current power, signal, video, data bus and Ethernet channels.
Key specifications
| Circuits (max) | 238 |
|---|---|
| Current per circuit (max) | 450 A |
| Voltage (max) | 250 V |
| Data / bus | MIL-STD-1553, RS-170 video, 100 Mbit Ethernet, Gigabit Ethernet |
Summarised in our own words from Moog Inc.'s published data; series maxima, individual models vary. Last checked 2026-10-29. Source 1
Notes on this data
VSR-6057 238 signal circuits; VSR-6772 up to 450 A power (75 A also listed); VSR-2000 250 VDC. VSR-7001 immersible to 1 m. Gold-on-gold contacts; NBC air channel options.
Specify Motion is not affiliated with Moog Inc.. Moog and Vehicular / turret slip rings (VSR-2000, VSR-3733, VSR-4906, VSR-4994, VSR-6057, VSR-6772, VSR-7001, AC3497, AC6033) 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 Moog 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.
Heavy-duty carbon-brush slip rings for very high current and voltage, with copper-graphite power rings and precious-metal signal rings. Large and heavy by design, but straightforward to maintain.
| Published maximum | Vehicular / turret slip rings (VSR-2000, VSR-3733, VSR-4906, VSR-4994, VSR-6057, VSR-6772, VSR-7001, AC3497, AC6033) | BHR Series Frameless Type (Carbon Brush) |
|---|---|---|
| Circuits | 238 | 76 |
| Current per circuit | 450 A | 500 A meets or exceeds |
| Speed | — | 10 rpm |
| Voltage | 250 V | 20,000 V meets or exceeds |
High-circuit-count slip rings that carry hundreds of mixed power, digital, analogue, fibre and RF channels in one unit.
| Published maximum | Vehicular / turret slip rings (VSR-2000, VSR-3733, VSR-4906, VSR-4994, VSR-6057, VSR-6772, VSR-7001, AC3497, AC6033) | Multi-channel Slip Ring |
|---|---|---|
| Circuits | 238 | 500 meets or exceeds |
| Current per circuit | 450 A | 30 A |
| Speed | — | 480 rpm |
| Voltage | 250 V | 700 V meets or exceeds |
| Bore | — | 40 mm |
Through-bore slip rings with a hollow centre so shafts, pipes or cables can pass through, carrying power, signal and fieldbus data. Standard bores run from 12.7 mm to 100 mm and custom bores are offered.
| Published maximum | Vehicular / turret slip rings (VSR-2000, VSR-3733, VSR-4906, VSR-4994, VSR-6057, VSR-6772, VSR-7001, AC3497, AC6033) | ER Series Through Bore Slip Ring |
|---|---|---|
| Circuits | 238 | 24 |
| Current per circuit | 450 A | 15 A |
| Speed | — | 300 rpm |
| Voltage | 250 V | 380 V meets or exceeds |
| Bore | — | 100 mm |
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 rugged and military slip ring is
A rugged or defence slip ring is a rotary joint designed and qualified for military vehicles, naval platforms, aircraft pods and harsh mobile plant. The electrical construction is similar to an industrial unit, but the housing, bearings, brush design and connectors are engineered for shock, vibration, wide temperature swings, sand, dust and humidity. Many must also meet electromagnetic compatibility requirements and are often built to a customer specification with qualification testing, traceability and controlled configuration.
When engineers choose a rugged and military slip ring
Choose a rugged design when the platform will see sustained vibration, mechanical shock, extreme temperatures or contamination, such as turrets, radar pedestals, EO/IR gimbals, and construction and mining machines. An industrial slip ring may work in a benign enclosure but usually lacks qualification evidence. The trade-offs are cost, weight, longer lead times and documentation effort. Defence programmes also bring export control and configuration management, which the component maker and buyer handle.
How to specify the Moog Vehicular / turret slip rings (VSR-2000, VSR-3733, VSR-4906, VSR-4994, VSR-6057, VSR-6772, VSR-7001, AC3497, AC6033)
Send these with your enquiry and an engineer can confirm the right Vehicular / turret slip rings (VSR-2000, VSR-3733, VSR-4906, VSR-4994, VSR-6057, VSR-6772, VSR-7001, AC3497, AC6033) variant or an equivalent:
- Environmental standard and test levels, such as MIL-STD-810 or a customer specification
- Shock and vibration profile (g, Hz)
- Temperature range, operating and storage (°C)
- EMC requirements, such as MIL-STD-461
- Power, signal, video and data channels
- Connectors and cable types
- Qualification, traceability and documentation needs
Common mistakes to avoid
- Quoting a standard without the specific test methods and levels that apply
- Leaving EMC screening and earthing out of the slip ring specification
- Assuming commercial connectors will survive the vibration profile
- Starting qualification late, so the programme waits on test results
Moog Vehicular / turret slip rings (VSR-2000, VSR-3733, VSR-4906, VSR-4994, VSR-6057, VSR-6772, VSR-7001, AC3497, AC6033): frequently asked questions
What is the Moog Vehicular / turret slip rings (VSR-2000, VSR-3733, VSR-4906, VSR-4994, VSR-6057, VSR-6772, VSR-7001, AC3497, AC6033)?
Environmentally sealed, EMI-shielded through-bore slip rings for armoured vehicle turrets, combining high-current power, signal, video, data bus and Ethernet channels. Published series figures include circuits 238, current per circuit 450 A, voltage 250 V. It is made by Moog Inc.; Specify Motion can help source it or propose an equivalent.
Who makes the Moog Vehicular / turret slip rings (VSR-2000, VSR-3733, VSR-4906, VSR-4994, VSR-6057, VSR-6772, VSR-7001, AC3497, AC6033)?
The Moog Vehicular / turret slip rings (VSR-2000, VSR-3733, VSR-4906, VSR-4994, VSR-6057, VSR-6772, VSR-7001, AC3497, AC6033) is made by Moog (Moog Inc.) and is listed here for engineers comparing options. Specify Motion is not affiliated with Moog Inc.; brand names are used only to identify the product.
What is the circuits of the Moog Vehicular / turret slip rings (VSR-2000, VSR-3733, VSR-4906, VSR-4994, VSR-6057, VSR-6772, VSR-7001, AC3497, AC6033)?
The published series maximum circuits is 238. Individual models and sizes in the Vehicular / turret slip rings (VSR-2000, VSR-3733, VSR-4906, VSR-4994, VSR-6057, VSR-6772, VSR-7001, AC3497, AC6033) 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 Moog Vehicular / turret slip rings (VSR-2000, VSR-3733, VSR-4906, VSR-4994, VSR-6057, VSR-6772, VSR-7001, AC3497, AC6033)?
Yes. On published figures, BHR Series Frameless Type (Carbon Brush) and Multi-channel Slip Ring are the closest match from our supply network. An engineer confirms the fit against your application before recommending anything.
What does MIL-STD-810 mean for a slip ring?
MIL-STD-810 is a US Department of Defense test method standard for environmental conditions such as vibration, shock, temperature, humidity, sand and dust. It describes how to test rather than one pass level, so a programme must state which methods and levels apply. A slip ring quoted as tested to MIL-STD-810 should come with the methods, levels and a test report.
Do defence slip rings need export licences?
Some do. Items specially designed for military use can appear on military or dual-use control lists in the UK, EU and US, which may require an export licence. It depends on the design and its end use, not the product type alone. The component maker and the buyer handle classification and licensing, so share the end use and destination early.
Further reading: How to select a slip ring · How to specify a slip ring · Slip rings
Other rugged and military slip rings series
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