Xtrafors BP
Robust, high speed and very low maintenance, with an improved thermal efficiency and an optimized sealing system.
Robust, high speed and very low maintenance, with an improved thermal efficiency and an optimized sealing system.

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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