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Charlotte Stonestreet
Managing Editor |
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Right-angle servo gearbox
20 June 2025
STOBER HAS further developed its KS right-angle servo gearbox. Delivering 'power without compromise', it is now offered not only in two- and three-stage versions, but also in a one-stage version. The new series features robust bearing technology and high-quality gearing.

Compared to other variants, the new one-stage version enables a higher output speed. The gear ratio range has been extended on both the low and high ends for all variants, so customers benefit from receive precise, low-backlash and maintenance-free solutions for highly dynamic requirements.
With their robust bearings and high-quality gearing, KS gearboxes are extremely durable making them suitable for continuous operation, even at high speeds. This series also features very high torsional stiffness. The new one-stage version is available in ratios 2 and 4.
Martin Preece, head of UK Subsidiary for STOBER, says: “By combining the KS right-angle servo gearbox with compact STOBER planetary gearboxes, it can be further expanded into multi-stage gearboxes with ratios from 6 to 400. This more than doubles the previous gear ratio range we have been able to offer so it covers an even wider range of applications.
“The new solution is also robust, rigid and low backlash making it suitable for dynamic requirements. We have also standardised the type of designation and adapted the design of the right-angle servo gearbox to the new, round shape of our planetary gearboxes.
“Just as with the two- and three-stage versions, designers can choose between three shaft designs,” he adds.
Thanks to these customised output geometries, KS gearboxes can be used for a variety of applications. The two- and three-stage gearboxes can be combined with various STOBER motors via direct attachment. The space-saving drive ensures operators benefit from less weight in addition to high torque and the resulting increased power density. Because the mass moment of inertia of the gearbox is lower due to the absence of the motor adapter, users can take advantage of the full dynamics of the drive.
- New LeanMotor from STOBER Drives
- Motor removal on the vertical axis
- Automated drive for heavyweight loading
- UK expansion for STOBER
- Putting safety at the forefront
- Compact & versatile planetary gear units
- Precision racks have twice the holes
- Online drive solution configurator
- Stage set for faultless performance
- STÖBER provides servo ball screw motors
- GEARBOX IS CHEAPER TO REPLACE THAN REPAIR
- PLANETARY/SPUR GEARBOXES
- PLANETARY GEARS WELL SUITED FOR RETROFIT
- AGEING WORM GEARS REPLACED BY PLANETARY GEARS IN SEWAGE PLANT
- REHFUSS BRINGS QUALITY AND VERSATILITY TO GEARBOX DESIGN AND SELECTION
- FLEXIBLE COUPLINGS
- GETTING THE BEST OUT OF GEARBOXES
- A Guide to the Selection
- Greater Corrosion Resistance
- Fits existing parameters