Magnetic Gears

Optimagdrive- An optimal solution for aerospace applications




  • A contactless alternative

In contrast to conventional gears, MAG SOAR´s magnetic gears do not present contact between teeth, therefore eliminating the requirements of lubrication, suppressing wear and minimizing maintenance.

  • High torque capacity

Thanks to years of intensive research, MAG SOAR has accomplished outstanding torque capacity, in some cases exceeding the values provided by its mechanical competitors.

  • Overload protection

If the demanded output torque overpasses the maximum design torque the system "slips" but nothing breaks down. Once the overload situation is solved, normal operation is completely recovered.

  • World record in reduction ratio

Optimagdrive last prototype has achieved the highest reduction ratio ever reached by a magnetic drive. The tests have demonstrated a reduction ratio of 75. A wide range of high reduction ratios are available to meet almost all applications requirements.

  • magnetic-gears-ilustrationZero backlash

MAG SOAR magnetic gears provide smooth and very accurate motion and zero-backlash between the teeth.

  • Harmonic and vibration isolation

MAG SOAR gearbox also provides harmonic and vibration isolation between the input and the output stages and quiet operation.


  • Optimum performance

The efficiency of the gearbox can be designed to reach equivalent values to those in electric motors, even in the most demanding environmental conditions. Extreme temperature, high vacuum, and radiation resistance models are available under request.

It is also reversible and can be used as a multiplication device. Linear magnetic gearboxes and displacement multipliers are also available.



Reduction ratio 1: 1 to 1:3000
Size Diameter 20 to 200 mm
Output Torque 0.5 to 500 Nm
Torque Density up to 200 kNm/m3
Specific Torque up to 25 Nm/kg
Operational Temperature -200ºC to 200ºC
Position accuracy <60 arcsec
Ripple torque < 0.1%
Overload protection
No wear, no friction
Cryogenic and Vacuum suitable models







Optimagdrive is a contactless magnetic gear technology specially designed for space applications able to operate at a temperature range of -210°C to 120°C. This innovative mechanism consists on an optimization of the MAG DRIVE already developed and tested technology. 

MAG DRIVE project objective was to design, build and test a magnetic superconductor non-contact drive able to function at extreme temperatures. 

MAGDRIVE did not only satisfactorily pass every test but also exceeded the initial expectations. The drive superconducting magnetic bearings have proven to be capable of suppressing every contact between moving parts. The lack of friction almost eliminates the fatigue of the system, one of the primary causes of the reduction of the lifetime in all kinds of mechanical devices. It also releases the machinery from the constant need of lubrication and improves its efficiency

Thanks to MAGDRIVE innovative technology advantages Optimagdrive barely has maintenance requirements. It has been designed with reduced size and weight, what makes it more adaptable to different situations. 

It can also go clockwise or anticlockwise. Ratio, maximum torque, stiffness, and damping can be customized. Even more, it can be also customized to be directed or inverted (inverting the sense of the rotation). A low noise level, through-wall capabilities and the ability for damping torsional vibrations are also remarkable features of this kind of devices. It can reduce but also multiply the velocity .