Electric Motors
Permanent magnet machines dimensioned around your torque, speed, length, diameter and housing constraints.
Together we can delivera world class electric powertrain.
[ INTEGRATED DRIVETRAIN ]
Motor and inverter, built as one
We design the motor, the Nytron i4040 inverter and the AmpTrace software as one unit. One team, one system.
One cooling circuit
Motor and inverter share the same oil or water-glycol loop.
No separate inverter box
The silicon carbide power stage sits inside the motor housing.
No three-phase cables
Shorter current path, fewer failure points, less EMI.
One responsible partner
Designed, simulated and documented as one system — by one team.
[ AXIAL FLUX MACHINE ]
The axial flux motor
In an axial flux machine the magnetic flux runs parallel to the shaft instead of radially outward. The result is a short, disc-shaped motor with a very direct flux path — high torque density in a fraction of the axial length of a conventional radial motor.
We design the electromagnetics, the cooling circuit and the integrated silicon carbide power stage as one unit, verified through coupled electromagnetic and thermal simulation before any metal is cut.
Motor engineering- Topology
- Axial flux, PM
- Torque density
- High / short stack
- Power stage
- Integrated SiC
[ WHAT'S POSSIBLE ]
What our motor makes possible
105 mm
Short axial length
24 kg
Per unit
Inverter inside
Only DC and CAN in
1 to 3 units
Stackable on one shaft
[ THE PROBLEM ]
Too many parts. Too much complexity.
Conventional drivetrains use a separate motor and inverter, connected by high-voltage cables. Each component needs space, cooling and installation. The result is more weight, more connections and more work to bring it all together.
Capabilities
Driving electrification forward — with the environment in mind.
We build our motors without heavy rare earth materials. Better for the planet, safer for your supply chain.
Integrated engineering
01 / DIAGNOSE
We start at the drawing board of your system and map the electromagnetic and thermal bottlenecks.
02 / ITERATE
Prototypes and simulation loops, adaptable when the specification changes midway.
03 / DELIVER
Production-grade documentation and support all the way from design into manufacturing.
“The axial flux motor: tomorrow's standard, built today.”
Our goal isn't to build an axial flux motor just for the luxury segment. We want to make the benefits of axial technology, including higher power density, better efficiency, lower weight, and direct-drive capability, accessible to more people, not just a handful of premium applications. And we do it at a competitive price.
Adam Borgelsson Maaninka, CTO
[ FIRST CONVERSATION ]
Book a meeting
Erik Strigén, Business Developer, takes the first conversation about your drivetrain, timeline and requirements. Pick a slot directly in his calendar.
Book a meeting with Erik[ NEWS ]
Latest from WattStep
29 Sept 2026
WattStep presents magnet-free axial flux research at ICEM 2026
Together with Chalmers, we presented our electrically excited axial flux motor at ICEM 2026 in Madeira — a magnet-free alternative with performance on par with permanent magnet machines.
1 Nov 2024
WattStep receives funding from the Swedish Energy Agency to develop new electric motor technology
WattStep Group AB and Chalmers University of Technology have been awarded funding from the Swedish Energy Agency to develop a new generation of rare-earth-free electric motors for vehicles.