Through-bore slip rings
Moog SRA-73830
Half-inch bore compact slip ring offering 2 to 22 circuits with mixed 2 A and 8 A ratings. Variants add Ethernet or a single-channel fibre optic rotary joint in the bore (SRA-73830-[ ]-JXX).
Key specifications
| Circuits (max) | 22 |
|---|---|
| Current per circuit (max) | 8 A |
| Voltage (max) | 240 V |
| Speed (max) | 250 rpm |
| Bore | 12.7–12.7 mm |
| Outer diameter | 34.9–34.9 mm |
| Data / bus | 100BaseT, 1000BaseT |
Summarised in our own words from Moog Inc.'s published data; series maxima, individual models vary. Last checked 2026-10-29. Source 1 · Source 2 · Source 3 · Source 4
Notes on this data
Dimensions converted from published inches. 210/240 VAC. Ethernet variant listed in product guide (power 120 VAC).
Specify Motion is not affiliated with Moog Inc.. Moog and SRA-73830 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 series from our supply network is the closest match on published figures.
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 | SRA-73830 | ER Series Through Bore Slip Ring |
|---|---|---|
| Circuits | 22 | 24 meets or exceeds |
| Current per circuit | 8 A | 15 A meets or exceeds |
| Speed | 250 rpm | 300 rpm meets or exceeds |
| Voltage | 240 V | 380 V meets or exceeds |
| Bore | 12.7 mm | 100 mm meets or exceeds |
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.
Other through-bore slip rings series
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