Engineering selection and product sourcing
STOBER
STOBER is a family-owned German drive technology company founded in 1934, with its head office at Kieselbronner Straße 12, 75177 Pforzheim, telephone +49 7231 582-0. Its UK subsidiary, STOBER DRIVES LTD., is in Hednesford, Cannock (+44 1543 458 858).
UK engineering team · Product sourcing · Supply support
Source STOBER parts or compare a suitable alternative
Need STOBER parts, a replacement or another suitable option? Send your part number or describe what the machine needs to do. We connect your requirement with experienced UK engineering and procurement support to help you get the right products, pricing and supply options. Your matched provider can take the enquiry through quotation and ordering to delivery and after-sales support.
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Select the products and performance you need. Our UK engineering team can use your specification to help source the right components, pricing and supply options. See your summary before adding contact details.
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Select everything you need. A motor, drive and gearbox can be specified together as one axis.
| Legal name | STÖBER Antriebstechnik GmbH + Co. KG |
|---|---|
| Founded | 1934 |
| Founder | Paul Stöber and Wilhelm Stöber |
| Owner / parent | STÖBER Antriebstechnik GmbH + Co. KG |
| Headquarters | 75177 Pforzheim, Germany |
| Website | stoeber.de/en |
Manufacturer information and published contact details
STOBER contact details
Head office
Kieselbronner Straße 1275177 Pforzheim
Germany
Telephone +49 7231 582-0
Email mail@stoeber.de
Website stoeber.de/en
STOBER DRIVES LTD. (UK)
Centrix House, Upper Keys Business VillageKeys Park Road, Hednesford
Cannock, Staffordshire WS12 2HA
United Kingdom
Telephone +44 1543 458 858
Web stober.co.uk
STOBER DRIVES, INC.
1781 Downing DriveMaysville, KY 41056
USA
Telephone +1 606 759 5090
Web stober.com
STOBER S.a.r.l.
131 Chemin du Bac à Traille69300 Caluire-et-Cuire
France
Telephone +33 4 78 98 91 80
Web stober.fr
STOBER TRASMISSIONI S.r.l.
Via Italo Calvino 7, Palazzina D20017 Rho (Milano)
Italy
Telephone +39 02 93909570
Web stober.it
Contact details as published by STÖBER Antriebstechnik GmbH + Co. KG, checked 2026-10-30. Specify Motion is not affiliated with STÖBER Antriebstechnik GmbH + Co. KG.
STOBER product lines
| SC6, SI6, SD6 and SB6 | 6th generation servo drive controllers, with PS6 supply modules |
|---|---|
| EZ | Synchronous servo motors, 0.4 to 91 Nm nominal torque |
| LM Lean motors | Encoderless IE5 synchronous motors run by SC6 and SI6 drives |
| P, PE, PH, PHQ, PHV | Planetary servo gearboxes with solid or flange output |
| KS and right-angle planetary | Right-angle servo gearboxes |
| Rack and pinion and helical ranges | Rack and pinion drives, helical, offset helical and helical bevel gearboxes |
| Servo geared motors | Gearboxes direct-mounted to EZ or LM motors |
Who STOBER is
STOBER is a German drive technology company that builds complete servo axes: the drive controller, the motor, the gearbox and the cables that join them. The company is based in Pforzheim, on the northern edge of the Black Forest, and is known in particular for precision planetary servo gearboxes mounted directly on synchronous servo motors without a coupling, an approach it says it was the first supplier in the world to offer, in 1993.
In English-speaking markets the name is usually written STOBER; the legal entity is STÖBER Antriebstechnik GmbH + Co. KG.
History and ownership
STOBER began in 1934, when brothers Paul Stöber (1908–1983) and Wilhelm Stöber (1904–1992) founded a mechanics workshop. In 1943 the company launched a variable-speed drive of its own design, and mechanical drive engineering remained the core of the business for decades.
Management passed to the second generation in 1982, when Siegfried Thiel, Ursula Thiel and Bernd Stöber took over. In that period STOBER began to sell frequency inverters, servo drives and software, and introduced the MGS geared motor system. The US subsidiary in Maysville, Kentucky, with its own assembly, opened in 1991, and in 1993 STOBER combined high-precision planetary gearboxes directly with dynamic synchronous servo motors.
From 2003 to 2023 the third generation, Patrick Stöber and Andreas Thiel, ran the company. At the end of 2019 it founded its ninth subsidiary, STOBER Drives Systems Technology in Taicang, China. In 2023 Rainer Wegener took over management, and the two family members remain shareholders. STOBER describes itself as a family business; it does not publish an employee number on the history page we read.
Product portfolio
Drive controllers
The 6th generation of drives shares fieldbus and safety options across the range. The SC6 drive controller is the compact single- or double-axis unit, with 4.5 to 19 A nominal and up to 39.9 A maximum current at 4 kHz. The SI6 drive controller is a slim 45 mm multi-axis system on a central PS6 supply module, from 5 to 50 A nominal and up to 105 A maximum. Both offer EtherCAT, PROFINET or EtherNet/IP and STO, or STO and SS1 over FSoE or PROFIsafe, to SIL 3 / PL e. The SD6 drive controller covers higher power, to 85 A nominal and 153 A maximum, with optional SS1, SS2 and SLS. A stand-alone SB6 controls up to four axes.
Motors
The EZ synchronous servo motors run from 0.4 to 91 Nm nominal torque (100.3 Nm stall) with EnDat 3, EnDat 2.x, one-cable or resolver feedback, and mount directly on STOBER coaxial, offset and right-angle gearboxes. The LM Lean motors are encoderless synchronous motors in efficiency class IE5: the SC6 or SI6 drive works out position and speed from the motor power connection, holding positioning to about ±1°, which suits conveyors, winders and automation axes that do not need servo-grade accuracy.
Gearboxes
For servo axes, the P planetary gearboxes offer ratios from 3 to 100, permitted acceleration torque up to 3,450 Nm and 1 to 8 arcmin backlash. The PH planetary gearboxes add a flange output, up to 7,500 Nm and 1 to 4 arcmin, and the PHQ planetary gearboxes reach ratios to 600 and acceleration torque to 43,000 Nm with 1 to 3 arcmin. Economy PE, high-ratio PHV, KS right-angle, rack and pinion and helical ranges complete the line-up. See our gearbox hub for sizing advice.
Technologies and standards
STOBER’s product logic is the direct-mounted servo geared motor: the motor shaft goes straight into the gearbox input without a coupling, which shortens the axis and removes a source of compliance. Its drives support EnDat 3 and one-cable connection, and safety functions are certified to SIL 3 and PL e (Cat. 4). The LM motors meet efficiency class IE5 to IEC/TS 60034-30-2. EZ and LM motors carry CE and cURus marks.
Industries served
STOBER’s own pages name automation and robotics, packaging machines, machine tools and plastics machines for its EZ motors, and automation and winders for its Lean motors. Our packaging and food and robotics and cobots pages cover these sectors.
Global and UK presence
Besides Pforzheim, STOBER lists subsidiaries in the USA, China, Japan, Taiwan, France, Italy, Austria, Switzerland, Turkey, Hungary and Sweden. In the UK, STOBER DRIVES LTD. operates from Centrix House, Upper Keys Business Village, Keys Park Road, Hednesford, Cannock, Staffordshire WS12 2HA, telephone +44 1543 458 858. UK engineers can therefore buy direct from a STOBER subsidiary with local support, and the head office also runs a 24-hour urgent service line on +49 7231 582-3000 for breakdowns.
Sourcing STOBER parts through Specify Motion
Specify Motion is independent of STOBER and is not affiliated with it. We can help you source STOBER drives, motors and gearboxes for an existing machine, or propose equivalents from our supply network on published figures. Use the find a replacement form to send a part number or nameplate photo.
STOBER history: key dates
- 1934Brothers Paul and Wilhelm Stöber found a mechanics workshop
- 1943STOBER launches its own variable-speed drive
- 1982Management passes to the second generation of the founding families
- 1991STOBER USA subsidiary with assembly opens in Maysville, Kentucky
- 1993First supplier to mate high-precision planetary gearboxes directly with synchronous servo motors
- 2003Third generation, Patrick Stöber and Andreas Thiel, takes over management
- 2019STOBER Drives Systems Technology founded in Taicang, China, its ninth subsidiary
- 2023Rainer Wegener becomes managing director; family members remain shareholders
STOBER servo drives
SC6 drive controller
Compact single- and double-axis servo drive controllers with 4.5–19 A nominal and up to 39.9 A maximum current (4 kHz), EtherCAT, PROFINET or EtherNet/IP and STO/SS1 to SIL 3 / PL e.
SI6 drive controller
Slim 45 mm multi-axis servo drive controllers on a central PS6 supply module, with 5–50 A nominal and up to 105 A maximum current (4 kHz), and the same fieldbus and safety options as SC6.
SD6 drive controller
High-performance servo drive controller with 2.3–85 A nominal and up to 153 A maximum current (4 kHz), EtherCAT, PROFINET or CANopen and optional SS1, SS2 and SLS safety.
STOBER servo motors
EZ synchronous servo motors
Synchronous servo motors with nominal torque from 0.4 to 91 Nm and stall torque up to 100.3 Nm, for direct mounting on STOBER gearboxes, with EnDat 3, EnDat 2.x, one-cable or resolver feedback.
LM Lean motors
Encoderless synchronous motors in efficiency class IE5 with nominal torque from 2.25 to 25.7 Nm (29.8 Nm stall), run position-controlled by SC6 or SI6 drives to about ±1°.
STOBER gearboxes
P planetary gearboxes
Solid-shaft planetary servo gearboxes with ratios from 3 to 100, permitted acceleration torque from 21 to 3,450 Nm and backlash from 1 to 8 arcmin.
PH planetary gearboxes
Flange-output planetary servo gearboxes with ratios from 4 to 100, permitted acceleration torque from 60 to 7,500 Nm and backlash from 1 to 4 arcmin.
PHQ planetary gearboxes
High-torque flange-output planetary gearboxes with ratios from 5.5 to 600, permitted acceleration torque from 200 to 43,000 Nm and backlash from 1 to 3 arcmin.
Engineer support
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