Through-bore slip rings
Moog AC6438
Half-inch through-bore slip ring using fibre brush contacts, rated 5 A per circuit in 6 to 24 circuit builds. Ethernet available on request.
Key specifications
| Circuits (max) | 24 |
|---|---|
| Current per circuit (max) | 5 A |
| Voltage (max) | 250 V |
| Speed (max) | 250 rpm |
| Bore | 12.7–12.7 mm |
| Outer diameter | 52.8–52.8 mm |
| Temperature | -40–80 °C |
| Data / bus | Ethernet |
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
Notes on this data
Dimensions converted from published inches. Web page states 250 VAC; catalogue/product guide 240 VAC.
Specify Motion is not affiliated with Moog Inc.. Moog and AC6438 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 | AC6438 | ER Series Through Bore Slip Ring |
|---|---|---|
| Circuits | 24 | 24 meets or exceeds |
| Current per circuit | 5 A | 15 A meets or exceeds |
| Speed | 250 rpm | 300 rpm meets or exceeds |
| Voltage | 250 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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