Lean motors

Does energy efficiency have to be bulky? Not with us! The encoderless Lean motor.

To meet the strict requirements of the European Ecodesign Directive, the drive world is constantly striving to increase the efficiency of electric motors. This results in increased weight and sizes.

With the encoderless Lean motor, STOBER has launched a compact solution that is lighter, smaller and – with IE5 classification – more energy-efficient than an asynchronous motor while delivering the same power. And it is also cheaper and more rugged than a standard servo motor.

BENEFITS
The new motor class

To reach higher efficiencies in asynchronous motors, as an example, you need more or higher-quality materials, such as copper. This makes the motors much larger and also heavier!

As the demands on asynchronous motors increase, the cost difference from more expensive but significantly more efficient servo drives shrinks.

And this is exactly where we come in: The strictly encoderless synchronous servo motor without a fan reaches efficiencies of up to 96% and energy efficiency class IE5 as a result!

At the same time, it is lighter and smaller than an asynchronous motor and less expensive and more rugged than a standard synchronous servo motor.

You get a more compact design and benefit from lower energy requirements and a long service life.

Completely without an encoder

The position and speed are determined in combination with the SC6 and SI6 drive controllers.

Despite not having an encoder in the motor, the speed deviation is less than 1%, while the positioning accuracy is ±1°.

Since the encoder is omitted, this motor class is ideal for dynamic automation tasks in harsh production environments.

With only one cable

Here’s the major advantage of the Lean motor. By leaving out an encoder, it can be continuously controlled with just a standard power cable without additional shielding.

This means less installation and routing effort, smaller drag chains, smaller control cabinet feed-throughs and lower costs.

The rugged and inexpensive alternative

By eliminating the encoder, the Lean motor uses a single off-the-shelf power cable with no additional shielded wires. These are two factors that make it up to 30% cheaper than a comparable synchronous servo motor.

Since the encoder is left out, the STOBER Lean motor can withstand high oscillations and vibrations.

And the reduced wiring also makes commissioning so much easier!

TECHNICAL DATA
LM SERIES
Power density
Price category
  • Nominal torque – motor: 2.25 – 25.7 Nm
  • Stall torque – gear unit output: 2.43 – 29.8 Nm

Find your right fit!
FEATURES
LM SERIES
  • Energy efficiency class: IE5 (highest class) in acc. with IEC/TS 60034-30-2
  • Shaft: Solid shaft with feather key
  • Brake: Optional robust spring-loaded holding brake on the motor’s B side
  • Power interface:
    • Rotating plug connectors with quick lock
    • Encoderless motor, the position is determined via the power connection
    • Correct position and speed determinations in combination with STOBER SC6 and SI6 drive controllers
    • Speed deviation is less than 1%, positioning accuracy is ± 1°
  • Cooling: Convection cooling
  • Winding protection: PTC thermistors guarantee thermal winding protection
  • Paint: RAL 9005 Jet black
  • Marks and test symbols: CE and cURus
  • Recommended drive controllers: STOBER drive controllers of the SC6 or SI6 series
 
APPLICATIONS
Automation
Industries and Applications

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
Winders
Industries and Applications

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
DOCUMENTS
TitleVersionIDDateLanguageSize / Type
Flyer LeanMotor 00K4430842019 06EN722.74 KB [PDF]
Catalog STOBER compact 034426552021 06EN8.33 MB [PDF]
TitleVersionIDDateLanguageSize / Type
Safety instructions for synchronous servo motors synchronous servo geared motors 004431042018 07EN67.26 KB [PDF]
TitleVersionIDDateLanguageSize / Type
Connection plan LM_AR on SC6 004427832017 11EN30.40 KB [PDF]
Connection plan LM_AT on SI6 004430172017 11EN36.14 KB [PDF]
TitleVersionIDDateLanguageSize / Type
Es wurden keine Ergebnisse gefunden
TitleVersionIDDateLanguageSize / Type
Declaration of conformity LM 024430822018 02EN31.27 KB [PDF]
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Do 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.

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Made in Germany. Since 1934.

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.

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