None are more compact with this versatility: Planetary servo geared motors.
With the new generation of planetary servo geared motors, STOBER has developed drive solutions that are the most compact on the market in terms of versatility!
Benefit from a 65% increase in power density and – by leaving out a motor adapter – get the most out of the dynamics of your drive.
- Planetary gearbox with EZ motor
- PEZ: For high precision and smooth operation
- PHEZ: For the highest precision and performance
- PHQEZ: Quattro power for maximum power density
- PHVEZ: For large gear ratios
- PEEZ: The attractive economy variant
The most impressive feature of the new generation of planetary gearboxes is its enormous variability. All STOBER EZ series motors can be directly attached in any size you need – without adapters.
This compact drive gives you the benefit of up to 65% increased power density.
And with the lower mass moment of inertia by leaving out a motor adapter, you can also utilize the full dynamics of the drive.
65% more power density
The decisive characteristic of the P series planetary gearbox is the high-quality helical gearing that gives you smooth operation that is second to none.
Another outstanding property is its extremely high efficiency. Due to the very low frictional torques, this series is ideal for continuous operation and high-speed applications.
When the P series is combined with our extremely compact, highly dynamic EZ motor, the result is a precise geared motor featuring a high torsional stiffness and backlash stability! For all typical servo applications.
The PH series planetary gearboxes are high-performance servo gearboxes with increased torsional and tilting stiffness. Here, their inner workings are also distinguished by our proven, high-quality helical gearing.
The output shaft is designed as a flange.
PH feat. EZ – the result is a high-performance geared motor, ideal for any kind of drive solution that has the highest requirements for rigidity, precision and reliability.
PHQ is a precise servo gearbox with high-quality helical gearing as well as maximum torsional and tilting stiffness. For maximum torque.
When it’s combined with an EZ motor, you get a geared motor that above all has an impressively innovative 4-planet system.
Our Quattro power series is ideal for applications where space is precious – like for drives in pick-and-place applications.
PHV – a precise high-performance servo gearbox with proven high-quality helical gearing as well as very high torsional and tilting stiffness.
The gearboxes are especially ideal for large gear ratios.
PHV and EZ – as the two elements are very short, the combination gives you a geared motor that is extremely compact and highly dynamic.
The PE series are highly cost-effective planetary gearboxes for the economy range with high performance.
They also have the high-quality helical gearing typical of STOBER – for low noise development and the best smooth operation.
It’s a unique feature on the market in this price and product class!
When you combine this gearbox with one of our EZ motors you get the advantage of a very economical and also powerful geared motor. Especially in the automation and robotics industries.
Power density
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- Total ratio: 3 – 100
- Allowed acceleration torque: 11 – 3450 Nm
- Backlash: 1 – 8 arcmin
- Efficiency: 95 – 97%
Find your right fit!
Power density
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- Total ratio: 4 – 100
- Allowed acceleration torque: 24 – 7500 Nm
- Backlash: 1 – 4 arcmin
- Efficiency: 93 – 96%
Find your right fit!
Power density
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€ | € | € | € | € |
- Total ratio: 61 – 121
- Allowed acceleration torque: 1098 – 7500 Nm
- Backlash: 3 arcmin
- Efficiency: 90%
Find your right fit!
Power density
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€ | € | € | € | € |
- Total ratio: 5.5 – 600
- Allowed acceleration torque: 72 – 22000 Nm
- Backlash: 1 – 3 arcmin
- Efficiency: 90 – 96%
Find your right fit!
Power density
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Price category
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- Total ratio: 3 – 50
- Allowed acceleration torque: 11 – 250 Nm
- Backlash: 8 – 10 arcmin
- Efficiency: 95 – 97%
Find your right fit!
- To the features of P gearboxes
- To the features of EZ motors
- To the features of PH gearboxes
- To the features of EZ motors
- To the features of PHQ gearboxes
- To the features of EZ motors
- To the features of PHV gearboxes
- To the features of EZ motors
- To the features of PE gearboxes
- To the features of EZ motors
- Laser cutting
- Tube bending
- Sheet metal bending
- Filling
- Tripods
- Storage and retrieval machines
- Mold locking
- Extrusion
- Vertical turntables
- Horizontal turntables
We get your visions moving – in various industries and markets worldwide.
Using a holistic approach for your specific task, we support you with precisely tailored solutions for drives and automation.
Learn moreWe get your visions moving – in various industries and markets worldwide.
Using a holistic approach for your specific task, we support you with precisely tailored solutions for drives and automation.
Learn moreWe get your visions moving – in various industries and markets worldwide.
Using a holistic approach for your specific task, we support you with precisely tailored solutions for drives and automation.
Learn moreWe get your visions moving – in various industries and markets worldwide.
Using a holistic approach for your specific task, we support you with precisely tailored solutions for drives and automation.
Learn moreWe get your visions moving – in various industries and markets worldwide.
Using a holistic approach for your specific task, we support you with precisely tailored solutions for drives and automation.
Learn moreWe get your visions moving – in various industries and markets worldwide.
Using a holistic approach for your specific task, we support you with precisely tailored solutions for drives and automation.
Learn moreWe get your visions moving – in various industries and markets worldwide.
Using a holistic approach for your specific task, we support you with precisely tailored solutions for drives and automation.
Learn moreWe get your visions moving – in various industries and markets worldwide.
Using a holistic approach for your specific task, we support you with precisely tailored solutions for drives and automation.
Learn moreWe get your visions moving – in various industries and markets worldwide.
Using a holistic approach for your specific task, we support you with precisely tailored solutions for drives and automation.
Learn moreWe get your visions moving – in various industries and markets worldwide.
Using a holistic approach for your specific task, we support you with precisely tailored solutions for drives and automation.
Learn more| Title | Version | ID | Date | Language | Size / Type | |
|---|---|---|---|---|---|---|
 | Catalog STOBER compact | 07 | 442655 | 2025 06 | EN | 8.44 MB |
 | Catalog Synchronous servo geared motors EZ | 15 | 442437 | 2025 05 | EN | 25.03 MB |
 | Catalog Synchronous servo geared motors with redundant brake | 02 | 443311 | 2024 09 | EN | 17.32 MB |
 | More than just a gearbox | 00 | 443157 | 2019 10 | EN | 1014.67 KB |
| Title | Version | ID | Date | Language | Size / Type | |
|---|---|---|---|---|---|---|
 | Operating manual P23 - P93 gear units and geared motors | 00 | 443356 | 2023 07 | EN | 1.57 MB |
 | Operating manual PHV94-PHV104 gear units geared motors | 00 | 443355 | 2023 02 | EN | 1.66 MB |
 | Operating manual PH33-PH83 PH94-PH104 gear units geared motors | 00 | 443354 | 2023 02 | EN | 1.70 MB |
 | Operating manual PHQ43-PHQ83 PHQ94-PHQ124 gear units geared motors | 00 | 443353 | 2023 02 | EN | 1.74 MB |
 | Operating manual PE22 - PE52 gear units and geared motors | 00 | 443252 | 2021 03 | EN | 775.46 KB |
 | Safety instructions for synchronous servo motors synchronous servo geared motors | 00 | 443104 | 2018 07 | EN | 74.66 KB |
 | Operating manual EZ EZHD EZHP EZS EZM synchronous servo motors | 01 | 443032 | 2019 05 | EN | 441.75 KB |
| Title | Version | ID | Date | Language | Size / Type | |
|---|---|---|---|---|---|---|
 | Lubricant fill volume | 17 | 441871 | 2023 10 | EN | 2.18 MB |
| Title | Version | ID | Date | Language | Size / Type | |
|---|---|---|---|---|---|---|
 | Certificate Free of CCC | 35 | 442072 | 2025 04 | EN | 261.03 KB |
 | EU declaration of conformity synchronous servo motors and synchronous geared motors ED EK EZ | 02 | 443089 | 2024 03 | EN | 73.57 KB |
 | UK declaration of conformity synchronous servo motors and synchronous servo geared motors EZ ED EK LM | 00 | 443297 | 2021 10 | EN | 71.46 KB |
 | Certificate UL - cURus synchronous servomotors EZ EZS EZM EZHD EZHP | 00 | 443097 | 2016 12 | EN | 1.44 MB |
Take advantage of the expertise of our application engineers in the Sales Centers or contact our first level support.
OPENsystemsupport@stoeber.de
With SERVOsoft®, you have a tool at your fingertips that lets you design your drive systems with precise scaling in just a few steps. Electrical as well as mechanical design, and simple and fast at the same time.
OPENWith the intuitive STOBER product configurator, you can filter, compare, save and share the right drive solutions with ease.
OPENAre you looking for CAD data? With the STOBER CAD tool, the drawings you need are ready for download in just a few clicks.
OPENSTOBER is present in over 40 countries worldwide with 14 subsidiaries and 80 service partners. No matter where, no matter when, we’re always at your service and on the move!
OPENDo you need competent help with replacement parts, replacement drives, repairs and retrofitting? Feel free to contact us! We also offer a 24-hour hotline for urgent cases.
OPENCollaboration at eye level.
“We found a reliable partner in STOBER, which delivers high-quality products quickly and on time. We especially appreciate the unusually constructive collaboration. We also only have one contact person at STOBER, which makes communication easier. In the early stage of development, in particular, this is very important. It puts us one step ahead of the competition.”
– Helmut Maier, Head of Electrical and Software Development, SPINNER Werkzeugmaschinenfabrik GmbH
STOBER Product ID.
Do you need operating and assembly instructions, replacement part lists or notes on technical features of our products?
Thanks to the STOBER Product ID., you can get the information you need quickly and easily.
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