Open and frameless slip rings
Servotecnica SVTS E (E 01-E 04)
Open, frameless high-current slip rings with three power circuits of 20, 40 or 60 A through bores of 25.4 to 60 mm.
Key specifications
| Circuits (max) | 3 |
|---|---|
| Current per circuit (max) | 60 A |
| Voltage (max) | 400 V |
| Speed (max) | 300 rpm |
| Bore | 25.4–60 mm |
| Ingress protection | IP00 |
| Temperature | -20–80 °C |
| Rated life (revolutions) | 100,000,000 |
Summarised in our own words from Servotecnica SpA's published data; series maxima, individual models vary. Last checked 2026-10-29. Source 1 · Source 2 · Source 3
Notes on this data
60 A on E 03/E 04 only. ABS housing. OD not clearly labelled in drawings — not entered.
Specify Motion is not affiliated with Servotecnica SpA. Servotecnica and SVTS E (E 01-E 04) 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 Servotecnica 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 | SVTS E (E 01-E 04) | Waterproof Slip Ring |
|---|---|---|
| Circuits | 3 | 44 meets or exceeds |
| Current per circuit | 60 A | 85 A meets or exceeds |
| Speed | 300 rpm | 600 rpm meets or exceeds |
| Voltage | 400 V | 1,100 V meets or exceeds |
| Bore | 60 mm | 127 mm meets or exceeds |
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 | SVTS E (E 01-E 04) | BHR Series Frameless Type (Carbon Brush) |
|---|---|---|
| Circuits | 3 | 76 meets or exceeds |
| Current per circuit | 60 A | 500 A meets or exceeds |
| Speed | 300 rpm | 10 rpm |
| Voltage | 400 V | 20,000 V meets or exceeds |
| Bore | 60 mm | — |
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 | SVTS E (E 01-E 04) | Explosion-proof Slip Ring (ER-EX) |
|---|---|---|
| Circuits | 3 | 17 meets or exceeds |
| Current per circuit | 60 A | 100 A meets or exceeds |
| Speed | 300 rpm | 50 rpm |
| Voltage | 400 V | — |
| Bore | 60 mm | 180 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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