Open and frameless slip rings
Moog Fiber brush separates
Unhoused ring and brush-block sets using fibre brush contacts for integration into customer structures.
Key specifications
| Current per circuit (max) | 50 A |
|---|---|
| Bore | 45.7–101.6 mm |
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
Dimensions converted from published inches. Bores 1.8 in (2 A), 2.8 in (5-50 A), 4.0 in (10-50 A).
Specify Motion is not affiliated with Moog Inc.. Moog and Fiber brush separates 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.
Sealed slip rings rated IP64 to IP68 for wet, washdown and marine settings such as ships and harbour equipment.
| Published maximum | Fiber brush separates | Waterproof Slip Ring |
|---|---|---|
| Circuits | — | 44 |
| Current per circuit | 50 A | 85 A meets or exceeds |
| Speed | — | 600 rpm |
| Voltage | — | 1,100 V |
| Bore | 101.6 mm | 127 mm meets or exceeds |
Flameproof slip rings certified Exd IIBT4 Gb for hazardous areas in oil, gas, chemical and explosive-dust environments, with a wide operating temperature band.
| Published maximum | Fiber brush separates | Explosion-proof Slip Ring (ER-EX) |
|---|---|---|
| Circuits | — | 17 |
| Current per circuit | 50 A | 100 A meets or exceeds |
| Speed | — | 50 rpm |
| Bore | 101.6 mm | 180 mm meets or exceeds |
Large through-hole slip rings for heavy outdoor plant, with through holes quoted up to 1000 mm and long service life.
| Published maximum | Fiber brush separates | Large Size Slip Ring |
|---|---|---|
| Circuits | — | 35 |
| Current per circuit | 50 A | 50 A meets or exceeds |
| Voltage | — | 500 V |
| Bore | 101.6 mm | 1,000 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 open and frameless slip rings series
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Tell us how you use the Moog Fiber brush separates: 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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