Berger Lahr RSM: Can motors and packaged synchronous motors

ASTRO is your point of contact for the replacement, new delivery and individual adaptation of BERGER LAHR synchronous motors, both for the canned motors of the RSM 36 to RSM 63 series and the packaged motors of the RSM 828 to RSM 884 series. Since 2017, we have been a partner of Schneider Electric Automation GmbH (formerly Schneider Electric Motion) with the Berger Lahr synchronous gear motor brand, and since October 2025, we have also been the exclusive partner for canned motors.

Thanks to close technical cooperation, ASTRO has in-depth knowledge of the design, properties and use of these motors. This expertise forms the basis for new deliveries and individual adaptation of compatible ASTRO ASM replacement motors. This ensures precision, reliability and durability at the highest level.

 

BERGER LAHR has manufactured two types of synchronous motors in the RSM range:

Order new original BERGER LAHR can motors exclusively from ASTRO

ASTRO offers new original BERGER LAHR canned motors from the RSM 36 to RSM 63 series. Since October 2025, we have been the exclusive global partner of Schneider Electric Automation for BERGER LAHR canned motors.

From 2026, all orders for BERGER LAHR canned motors worldwide will be processed by ASTRO. As part of this partnership, all orders for BERGER LAHR RDM motors, housings and cams will also be accepted and processed by ASTRO.

We appreciate the trust placed in us and assure all customers a courteous handling of their requests, including those with individual requirements.

 

Outstanding features of BERGER LAHR synchronous motors

The most outstanding feature of the synchronous motor is its synchronous speed, which is independent of load. BERGER LAHR synchronous motors in both model series are also characterised by a high self-holding torque (even higher on request) and low inertia.

The synchronous motors are equipped with permanent magnet rotors and are therefore brushless and wear-free. Permanently lubricated rotor shaft bearings in the RSM 36 - RSM 63 series and ball-bearing rotor shaft bearings in the RSM 828 - RSM 884 series ensure reliable operation even in the most demanding applications. Years of experience in the design and manufacture of motors and in quality control have made it possible to offer a 24-month warranty on all motors.

 

Robust, precise and reliable drive components

Almost all motor types are manufactured in 50 Hz and 60 Hz versions (for 3-phase motors, 10–300 Hz is also possible). The constant operating speed makes the synchronous motor a frequently used drive in control technology, conveyor technology, medical technology, heating technology, precision engineering and other areas of equipment and machine construction.

BERGER LAHR synchronous motors are robust, precise and reliable drive components. The requirements for ‘compact, powerful, and cost-effective’ are met by BERGER LAHR synchronous motors through a wide range of types with various electrical designs.

Output powers in the range from 0.15 to 33 watts enable technical solutions ranging from purely time-based motion sequences to synchronous power drives with high torques.

Features of BERGER LAHR synchronous motors

  • Self-starting
  • Load-independent speed
  • Blockage-proof
  • Stable direction of rotation
  • High efficiency
  • Low-noise operation
  • Low magnetic stray fields
  • Self-holding torque in de-energised state
  • Favourable dimensions
  • Preferably horizontal installation position
    (In the case of vertical installation, special load cases may require the use of ball bearings or other measures.)
  • Flange mounting
  • Maintenance-free
  • Compatible replacement gearboxes from the ASTRO Motors range are available for all motor types as substitutes for BERGER LAHR gearboxes
  • Corrosion-protected
  • Protection class on request from IP 40 to IP 65

 

Areas of application

BERGER LAHR synchronous motors can be combined with various gearboxes from the BERGER LAHR gearbox range to form powerful gear motors.

BERGER LAHR synchronous motors are precise and reliable components for many areas of equipment and machine construction. Over many years of sales experience, the synchronous motors have been used and serviced in a wide range of different applications.

 

Typical applications are:

  • Equipment for the service sector
  • Office machines
  • Vending and gaming machines
  • Advertising equipment
  • Analysis instruments
  • Photo replacement equipment
  • Medical and optical equipment (e.g. projectors)
  • Reading devices (e.g. credit card readers)
  • Studio film cameras
  • Station displays
  • Audio equipment

 

Applications in electronics

  • Motor potentiometers
  • Ring variable transformers
  • Electron beam deflection units
  • Switching devices (e.g. programme switching devices, step switching devices, motorised measuring point switches)
  • Electro-pneumatic converters
  • Contactors

 

Mechanical engineering

  • Printing machines
  • Labelling machines
  • Textile machines
  • Winding machines, film and paper rewinders

 

Measuring instruments

  • Timers
  • Counters
  • Filling, weighing, mixing and dosing equipment
  • Payment and registration devices

 

Conveyor and drive technology

  • Diaphragm pumps
  • Actuators, servo drives
  • Valve controls (e.g. motor control valves)
  • Multi-speed manual transmissions
  • Antenna drives
  • Drives

 

 

Structure of synchronous motors

There are two fundamentally different designs of BERGER LAHR synchronous motors. On the one hand, there are canned motors – the housing parts are pressed together like a can and lid – and on the other hand, there are ‘packaged’ motors.

Can motors represent the lower and middle power range of BERGER LAHR synchronous motors; packaged motors are in the middle and upper power range.

Synchronous motors of the ‘can’ design consist of two or three individual stators arranged axially in a row. One winding is embedded in each individual stator as a ring coil. Depending on the motor type, iron claws form 3, 4, 5, 6, 8, 10 or 12 pole pairs per stator in the motor interior. The rotors are made of barium ferrite permanent magnets. The motor shafts are made of hardened, polished steel. Permanently lubricated plain or ball bearings ensure smooth and wear-free operation.

‘Packaged’ motors get their name from their stator magnet material. Stamped electrical steel sheets are riveted together to form a stator package. Two windings are distributed axially across the eight poles of the stator. The rotors contain radially magnetised barium ferrite or ALNICO permanent magnets. The motor shafts are made of hardened, polished steel. Permanently lubricated ball bearings support the shaft ends.

 

Advice from our experts

Are you planning a project or looking for a suitable replacement for Berger Lahr RSM?
Our technical contacts will support you from selection to integration.

Contact us – we will provide you with individual, competent and practical advice.

Phone: +49 4743 27 69-0
Fax: +49 (0) 4743 27 69-29

Mail: astro@astro-motoren.de