MSS Series
High dynamics from an ironless rotor, with a long-life brush system and tacho, encoder or brake options.
High dynamics from an ironless rotor, with a long-life brush system and tacho, encoder or brake options.

The properties the Xtrafors Prime was designed around — taken from the Mavilor documentation, not from a brochure adjective list.
The slotless stator removes the reluctance variation behind cogging torque — no detent steps.
Smooth torque through the whole revolution, for force-loop and low-speed positioning axes.
0.24 Nm to 75 Nm stall torque — 3 000 rpm rated up to 13.2 Nm, 1 500 rpm above it.
Less loss in the magnetic circuit, less heat to take out of the machine.
A stiff mechanical design that holds its position under load.
One platform, sixteen standard models — shafts, flanges, housings, windings and connections customized on top.
Ranges and construction data of the series. Per-model torque, speed and dimension tables are in the datasheet — and our engineers will size the axis with you.
| Type | Zero-cogging AC brushless, radial flux, slotless stator |
|---|---|
| Stall torque | 0.24 Nm to 75 Nm |
| Rated speed | 3 000 rpm up to 13.2 Nm · 1 500 rpm from 18.3 Nm |
| Flange ØA | 28 · 32 · 40 · 60 · 80 · 95 · 130 · 180 mm (square flange 30 to 190 mm) |
| Feedback | Resolver (standard) · incremental, SinCos, Hiperface and EnDat encoders (option) |
| Windings | 400 VAC, 230 VAC and 48 VDC |
| Protection | IP-65 standard · IP-67 and shaft seal optional |
| Brake | Holding brake available |
| Thermal sensor | PTC standard · NTC optional |
| Connection | Rotatable angled connectors standard · straight connectors or direct cable output optional |
| Compliance | RoHS conform · UL conform (UL-listed pending) |
Data: Xtrafors FP Prime, AC Servomotors, 2024 — subject to modifications.
Send us the torque, speed, duty cycle and the space you have. We come back with a configuration — standard or adapted.
Applications that specify this series, or the fields it is built for.


High dynamics, flexibility and repeatable production.

Weight, precision, reliability and application-specific integration.

Compact design, dynamic performance and application-specific integration.

Precision, reliability and specialized mechanical requirements.
If the document you need is not here, ask us — we will send it.
Full technical data, torque curves and mechanical dimensions for the series.
CAD geometry for every published configuration — resolver, encoder and brake variants.
Installation, connection, commissioning and maintenance instructions.
ISO 9001:2015 and ISO 14001:2015 certificates, RoHS and REACH declarations, duty cycle declaration according to IEC 60034-1.
Mavilor Motors S.A. · Pol.Ind. Can Bernades - Subirà, C/ Empordà 11-13, 08130 Santa Perpètua de Mogoda (Barcelona, Spain) · mavilor@infranor.com · +34 93 574 36 90
Tell our engineers what your application needs. We’ll explore how existing technology, customization or new development can create the right solution.
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