Power density redefined: Synchronous servo motors.
Super compact, maximum torque and combined with high dynamics! This characterizes our two powerhouses: The synchronous servo motors from the EZ and EZHD series.
In contrast with comparable motors, STOBER has succeeded in increasing the power of the EZ engines enormously while noticeably reducing the overall length at the same time. In addition, all synchronous servo motors are available with a wide variety of encoders and holding brakes.
- Impressive servo motors with a long service life
- System diversity for individual requirements
- EZ: The highly dynamic, compact powerhouse
- EZHD: The brilliant variant with a flange hollow shaft
With their EZ and EZHD synchronous servo motors, STOBER offers you brushless, permanent-magnet and electronically commutated motors with a range of different power profiles.
The stator and rotor components are designed in different versions with an energetically optimal form. The result is an extremely low torque ripple and a high power density.
The design of both series is so impressive because of the diverse range of variants and interfaces.
The motors are available in different lengths and sizes and are generally used for direct attachment without coupling on all coaxial, offset helical and right-angle gear units.
The basic requirement for the very short design is to use orthocyclic linear tooth winding. This special process allows for the stator windings to be manufactured with the highest possible copper fill factor.
The result is an approximate 80% increase in the motor rating, with the motor length almost half as long without any loss in performance.
The EZ series is also energy-efficient – thanks to the various integrable encoders, the synchronous servo motors feature the ability to provide only the power actually required for an application without wasting it. In total, the EZ motors offer powerful torque, high dynamics and precise synchronization behavior.
The design of the EZHD synchronous servo motor with hollow shaft, featuring an exceptionally large feed-through for energy or media, opens up a wide range of application possibilities where hardly any ready-made solution was available before.
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- Nominal torque – motor: 0.89 – 77.2 Nm
- Stall torque – gear unit output: 0.95 – 94 Nm
Find your right fit!
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- Nominal torque – motor: 1.9 – 26.6 Nm
- Stall torque – gear unit output: 2.6 – 31.1 Nm
Find your right fit!
- Shaft:
- Solid shaft without feather key
- Hollow shaft for direct attachment on STOBER servo gear units
- Forced ventilation unit: For increasing torque and continuous power or at higher ambient temperatures; also as a retrofit kit
- Brake: Optional permanent magnet holding brake on the motor’s B side
- Power interface: Twist-on plug connectors with quick lock; optional mating connectors
- Encoder interfaces:
- EnDat® 3
- EnDat® 2.1/2.2 single-turn, multi-turn
- One Cable Solution (OCS)
- Resolver
- Winding protection: PTC thermistors guarantee thermal winding protection
- Paint: RAL 9005 Jet black
- Marks and test symbols: CE and cURus
- Recommended drive controllers or inverters: Exceptionally efficient in combination with STOBER drive controllers of the SI6 or SD6 series or the SDS 5000 servo inverter
- Shaft: Continuous flange hollow shaft for conveying media
- Brake: Optional permanent magnet holding brake on the motor’s B side
- Power interface: Twist-on plug connectors with quick lock; optional mating connectors
- Encoder interfaces: EnDat® 2.1 single-turn, EnDat® 2.2 single-turn, multi-turn
- Winding protection: PTC thermistors guarantee thermal winding protection
- Paint: RAL 9005 Jet black
- Marks and test symbols: CE and cURus
- Recommended drive controllers or inverters: Exceptionally efficient in combination with STOBER drive controllers of the SI6 or SD6 series or the SDS 5000 servo inverter
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 more| Title | Version | ID | Date | Language | Size / Type | |
 | Catalog STOBER compact | 03 | 442655 | 2021 06 | EN | 8.33 MB |
 | Drives and Automation | 10 | 442711 | 2021 10 | EN | 14.11 MB |
 | Catalog Synchronous servo geared motors EZ | 10 | 442437 | 2022 01 | EN | 24.17 MB |
| Title | Version | ID | Date | Language | Size / Type | |
 | Operating instructions EZ EZHD EZHP EZS EZM synchronous servo motors | 01 | 443032 | 2019 05 | EN | 434.19 KB |
| Title | Version | ID | Date | Language | Size / Type | |
| Es wurden keine Ergebnisse gefunden | ||||||
| Title | Version | ID | Date | Language | Size / Type | |
 | EU Declaration of conformity Synchronous servo motors EZF EZH EZHD EZHP EZS EZM | 01 | 443089 | 2018 06 | EN | 28.49 KB |
 | EU Declaration of conformity Synchronous servo motors EZF EZH EZHD EZHP EZS EZM | 01 | 443090 | 2018 06 | EN | 28.03 KB |
 | Certificate UL _ cURus synchronous servo motors EZ EZS EZM EZHD EZHP | 00 | 443097 | 2018 04 | EN | 1.43 MB |
 | Certificate Free of CCC | 442072 | EN | 348.51 KB |
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 10 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.
OPENSuccessful together in the long term.
“We have had a partnership with STOBER for more than 30 years. We think that speaks for itself.”
– Hubert Rauschmaier, Purchasing Manager Technical Purchasing, MEBA Metall-Bandsägemaschinen GmbH
Need special solutions?
Our product portfolio is modular and freely scalable, offering a very wide range of combination options. A drive system for custom-fit, compact machine concepts. With the option to make adjustments to fit the project.
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