STÖBER supplier in Romania
geared motors, servo motors, drive systems
Founded in 1934 · Headquarters: Pforzheim, Germany
Who is STÖBER and what does it make?
STÖBER is a German manufacturer of geared motors, rack-and-pinion drives, lean servo motors and drive controllers, based in Pforzheim and in continuous operation since 1934. The company builds industrial helical gearboxes, high-precision linear systems for positioning axes and compact servo motors designed to work without a separately mounted position encoder. For customers in Romania we can quote from the STÖBER range of geared motors and servo drives, configured to the torque, ratio and mounting type required by the machine.
What sets the range apart is its wide coverage: the C series of helical geared motors runs from 21 up to 6000 Nm with ratios between 2 and 276, and the ZR/ZTR/ZTRS family of rack-and-pinion drives covers modules from 2 to 8 mm and feed forces of up to 124 kN, for high-speed linear axes on machine tools or gantry robots. The LM series lean motors reach efficiency class IE5 and determine position through the power cable, in combination with the SC6 or SI6 drive controllers, without an external encoder mounted on the housing.
For installations in Romania where mounting space is limited or axis precision matters more than initial cost — robotic cells, packaging lines, machining centres — the STÖBER range is an alternative worth analysing against the gearboxes and servo motors already installed.
What do we supply from the STÖBER range?
| Product | Description |
|---|---|
| C Series Helical Geared Motors | Industrial geared motors with helical gears and monobloc construction, with high torsional stiffness and efficiency of 96–97%. They cover torques from 21 to 6000 Nm and ratios between 2 and 276, with the option of coupling to standard motors through short STÖBER adapters. They are designed for power transmission in production lines and heavy machinery. For a quotation, the customer must state the torque required, the ratio and the type of motor to be coupled. |
| ZR/ZTR/ZTRS Rack-and-Pinion Drives | Family of precision linear drives, with modules between 2 and 8 mm and feed forces between 3 and 124 kN, depending on the series. The feed force rises from ZR (3.1–16 kN) and ZTR (6.5–67 kN) to ZTRS (20–124 kN), according to the manufacturer's data. They are used on the linear axes of machine tools and gantry robots, where a long stroke matters more than with a classic ball screw. |
| LM Series Lean Motors with SC6/SI6 Drive Controllers | Synchronous servo motors of efficiency class IE5, with rated torque between 2.25 and 25.7 Nm, designed to work without a position encoder mounted on the motor — the position is determined through the power cable, together with the STÖBER SC6 or SI6 drive controllers. Speed deviation stays below 1%, and the positioning accuracy at standstill is about ±1°. The customer must specify the load torque and the drive controller already in the installation. |
Why STÖBER?
- C series helical geared motors, torques from 21 to 6000 Nm and ratios between 2 and 276.
- ZR, ZTR and ZTRS series rack-and-pinion drives, modules 2–8 mm, feed forces up to 124 kN.
- LM series lean motors, efficiency class IE5, positioning without an external encoder via the SC6/SI6 drive controllers.
- FEZ series offset servo geared motors, acceleration torques 21–1100 Nm, efficiency of 96–97%.
Which STÖBER codes and series are requested most often?
| Code | Description |
|---|---|
| C Series | Helical geared motor, torque 21–6000 Nm, ratio 2–276 |
| F Series | Offset helical gearbox, acceleration torque 53–1100 Nm, ratio 4.3–552 |
| FEZ Series | Offset servo geared motor, acceleration torque 21–1100 Nm, efficiency 96–97% |
| PLM Series | Lean planetary motor, torque 13–1840 Nm, ratio 3–70 |
| PELM Series | Economy lean planetary motor, torque 13–310 Nm, ratio 3–20 |
| LM Series | IE5 lean servo motor, rated torque 2.25–25.7 Nm, no external encoder |
| ZV Series | Flexible rack-and-pinion drive, module 2–4 mm, gear quality class 6 |
| ZR Series | Rack-and-pinion drive, module 2–4 mm, feed force 3.1–16 kN |
| ZTR Series | Performance rack-and-pinion drive, module 2–6 mm |
| ZTRS Series | High-force rack-and-pinion drive, module 3–8 mm |
| ZS Precision Racks | Precision racks, module 2–8 mm, lengths of 0.5–2 m |
| SB6 | Drive controller for linear and rotary synchronous servo motors and for lean motors |
| SC6 | Compact drive controller for lean motors without an external encoder |
| SI6 | Servo drive controller for the lean motor range |
| SX6 | Safety module for drive controllers in the STÖBER range |
| K-Series | Helical-bevel gearbox, acceleration torque 50–13200 Nm, ratio 4–381 |
| KS | Angular gearbox for servo motors, extended range of ratios |
Where is STÖBER equipment used?
- Machine tools — positioning and feed axes on machining centres
- Automation and robotics — servo drives for robotic cells
- Packaging — compact geared motors for high-speed packaging lines
- Plastics processing — drives for extruders and injection moulding machines
How do we supply STÖBER in Romania?
For the STÖBER range we work from the manufacturer's technical documentation for torques, ratios and gear modules — we have no installations of our own tested with this equipment, and we say so directly. We bring in the helical geared motors, rack-and-pinion drives and lean servo motors from the STÖBER range on order, through EU supply channels, usually in 1–4 weeks from the manufacturer's order confirmation. We do not promise constant availability from the factory; each configuration is checked before quotation. For a correct quotation we need the torque required, the ratio, the speed and the type of drive controller in your installation.
We communicate manufacturing lead times in the quotation, and the SC6/SI6 drive controllers are configured on the basis of the parameters supplied by the customer.
Frequently asked questions about STÖBER
What does STÖBER make?
STÖBER makes industrial geared motors, rack-and-pinion drives for linear axes, lean servo motors and servo geared motors, plus drive controllers and safety modules for driving them. The range runs from high-power helical gearboxes, with torques of up to 6000 Nm, to compact precision motors for positioning axes. The manufacturer is German, based in Pforzheim, active since 1934.
How do I choose a STÖBER C series geared motor by code?
For the C series, the output torque required, the ratio wanted between 2 and 276, the input speed and the type of electric motor to be coupled to the gearbox must be specified. The full code indicates the housing size and the mounting variant, information that we confirm before preparing the final quotation.
What technical data does STÖBER publish for the F series offset helical gearboxes?
The F series of offset helical gearboxes has an acceleration torque between 53 and 1100 Nm and an efficiency of 96–97%. The final choice depends on the torque required, the ratio and the mounting space available on the machine.
Do you supply STÖBER equipment in Romania, and how long does it take?
We bring in STÖBER geared motors and servo motors on order through EU supply channels, usually in 1–4 weeks from order confirmation, depending on the exact configuration requested. The lead time is the one confirmed in the quotation.
How do I request a STÖBER quotation?
Send the STÖBER code from the nameplate and the quantity; we reply in English with availability and the lead time written in the quotation.
Request a quoteUpdated: 12 November 2026 · Sources: STÖBER Antriebstechnik GmbH + Co. KG (manufacturer documentation)