Pancake slip rings
Servotecnica SVTS F (F 01) pancake slip ring
Flat slip ring with a 40 mm through bore and 40 mm height, derived from the C Series, carrying up to 20 circuits.
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Need Servotecnica parts, a replacement or another suitable option? Send your part number or describe what the machine needs to do. We connect your requirement with experienced UK engineering and procurement support to help you get the right products, pricing and supply options. Your matched provider can take the enquiry through quotation and ordering to delivery and after-sales support.
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Select everything you need. A motor, drive and gearbox can be specified together as one axis.
Key specifications
| Circuits (max) | 20 |
|---|---|
| Current per circuit (max) | 10 A |
| Voltage (max) | 400 V |
| Speed (max) | 100 rpm |
| Bore | 40–40 mm |
| Ingress protection | IP51 |
| 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
3 power (10 A, 400 V) + 17 signal (5 A, 240 V). Nominal 100 rpm. Stainless housing.
Specify Motion is not affiliated with Servotecnica SpA. Servotecnica and SVTS F (F 01) are used only to identify the product. Comparisons use published figures; always confirm against the current datasheet.
Engineer support
Speak to our engineers about your project
Our experienced engineers are on hand, ready to help with your project. Whether you need the Servotecnica SVTS F (F 01) itself, help sourcing it, or a modified or custom design built around your load, speed and space, tell us what the machine has to do and we'll come back with the right option.
- Help sourcing SVTS F (F 01) and spares for installed machines
- Modified and custom designs when a catalogue part doesn't fit
- Complete axis: motor, drive, gearing and feedback matched together
Typical applications
What a pancake slip ring is
A pancake slip ring, sometimes called a platter or flat slip ring, arranges its rings as concentric circles on a flat disc rather than as a stack along a shaft. Brushes press axially onto the face of the disc. This makes the assembly very short along the axis, often only a few tens of millimetres, at the cost of a larger diameter as circuits are added. Most pancake designs also have a central bore, so a shaft or services can pass through the middle.
When engineers choose a pancake slip ring
Choose a pancake design when axial height is the tightest constraint, such as in low-profile turntables, medical tables, rotary platforms under a payload or equipment mounted against a bulkhead. The trade-offs are circuit count and speed: each extra ring adds diameter, outer rings run at higher surface speed and the flat face is more exposed to debris. For many circuits in a modest diameter, a barrel-type through-bore unit is usually more economical. Speed ratings are typically lower than for capsules.
How to specify the Servotecnica SVTS F (F 01)
Send these with your enquiry and an engineer can confirm the right SVTS F (F 01) variant or an equivalent:
- Maximum axial height and outer diameter (mm)
- Bore diameter (mm)
- Number of circuits and current per circuit (A)
- Voltage between adjacent rings (V)
- Speed (rpm)
- Contamination exposure and sealing (IP code)
- Orientation: horizontal or vertical axis
Common mistakes to avoid
- Asking for many circuits in a pancake format, which drives diameter and cost up quickly
- Ignoring axial runout of the mounting face, which changes brush pressure around the turn
- Leaving the ring face exposed to dust or swarf without a cover
- Specifying high speed without checking the surface speed of the outermost ring
Servotecnica SVTS F (F 01): frequently asked questions
Can you help replace Servotecnica SVTS F (F 01) or source the original?
Send the full model code, quantity and required date. Our engineers can check original-part availability and assess suitable alternatives, including supply-network options where appropriate. We confirm compatibility and any changes needed before recommending a replacement.
What is the Servotecnica SVTS F (F 01)?
Flat slip ring with a 40 mm through bore and 40 mm height, derived from the C Series, carrying up to 20 circuits. Published series figures include circuits 20, current per circuit 10 A, voltage 400 V, speed 100 rpm. It is made by Servotecnica SpA; Specify Motion can help source it or propose an equivalent.
Who makes the Servotecnica SVTS F (F 01)?
The Servotecnica SVTS F (F 01) is made by Servotecnica (Servotecnica SpA) and is listed here for engineers comparing options. Specify Motion is not affiliated with Servotecnica SpA; brand names are used only to identify the product.
What is the circuits of the Servotecnica SVTS F (F 01)?
The published series maximum circuits is 20. Individual models and sizes in the SVTS F (F 01) 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 Servotecnica SVTS F (F 01)?
We can assess suitable replacement options. Our engineers can review the original model and propose options for your load, speed and environment. An engineer confirms the fit against your application before recommending anything.
When is a pancake slip ring better than a barrel slip ring?
A pancake slip ring wins when there is very little axial space but room to spread out radially, such as under a flat turntable. A barrel or through-bore design wins when you need many circuits, higher speed or a smaller diameter. If both length and diameter are tight, the circuit count usually has to be reduced or some signals multiplexed onto a data channel.
Do pancake slip rings have a lower speed rating?
Often, yes. Because the rings sit at different radii, the outermost ring runs at the highest surface speed, and the flat face makes brush dynamics more sensitive to axial runout. Pancake designs are typically used at modest speeds. If the application turns quickly, check the rated rpm against the largest ring and consider a barrel design instead.
Further reading: How to select a slip ring · Slip rings
Other pancake slip rings series
Engineer support
Our engineers are ready to help with your project
Tell us about your project and how you use the Servotecnica SVTS F (F 01): the load, speed, duty and environment. An experienced engineer will review it and reply, normally within one working day.
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