All offered AC synchronous servomotors feature a distributed three-phase winding in the stator and permanent magnets on the rotor.
The winding is designed for sinusoidal current and voltage waveforms.
Rare-earth magnets (neodymium/iron/boron) are placed on the surface of the rotor.
Low cogging torque (up to 3% of Mo) is achieved by skewing the stator winding slots or the rotor magnets.
The stator of a standard motor is always integrated into an external aluminum housing. The motor bearings are positioned in the front flange and rear shield. Cooling of a standard motor is mainly achieved through the front flange and partially via the aluminum housing (profile). Therefore, motors always require flange mounting. The mounting surface should be at least 2.5 times the area of the motor flange itself.
Feedback sensors are mounted in the rear housing, where connectors or cable glands are also located.
Key Features of Servomotors:
- Design: Flange-mounted, B5
- Colour: Matte black
- Bearings: Sealed ball bearings with permanent grease filling
- Protection rating: IP64 (IP54 on the shaft side), optional up to IP67 including the shaft
- Winding insulation class: F (H upon request)
- Cooling: Convection (Type A)
- Temperature: According to ČSN EN 60034, temperature rise Totep = 110 °C, ambient temperature up to T = 40 °C
- Duty cycle: Continuous (S1)
- Electrical connection: Connectors, mating connectors, or optional cable outlets upon request
- Thermal protection: Thermal protection is ensured by thermal contacts or thermistors (PTC,NTC sensors) embedded in the motor winding. Thermal sensors are set to prevent winding temperatures from exceeding 150 °C. The type of thermal protection must be specified.
- Holding brake: All servomotors can be equipped with an electromagnetic brake. The brake is not intended for positioning but for mechanically securing the motor in a stationary state. The brake supply voltage is typically 24 VDC − 0% +10%.
Feedback Sensors:
Commonly used sensors:
- Resolver (selsyn, phase resolver) – a brushless electrical machine used for rotor position measurement and determining commutation angles.
Sensors with purely digital communication:
Position, temperature or vibration, and motor type data are transmitted to servo amplifiers via a high-speed data channel. These sensors are always absolute – single-turn or multi-turn – and come in various resolutions (14–24 bits/rev).
- DSL (motors with this sensor typically have only one connector or cable)
- BISS-C
- EnDat 2.2
- EnDat 3 (motors with this sensor typically have only one connector or cable)
- DriveClick
Sensors with combined signals (data channel + incremental signals):
An absolute position is determined via the data channel. Incremental pulses or periods are used for more precise positioning. These sensors can be absolute – single-turn or multi-turn. Accuracy is determined by the number of pulses (periods per revolution) and interpolation capabilities in servo amplifiers.
- Hiperface
- EnDat
- BISS/SSI
Comcoder – Hall sensors + incremental sensor:
Commutation position is determined using commutation signals from three Hall sensors. Incremental signals are used for more precise position determination.
Standard Servomotor Range
Standard servomotors are manufactured in 10 sizes (from 25x25 mm to 240x240 mm) with at least 3 length variants in each size. Stall torque ranges from 0.03 Nm to 115 Nm. Motor speed and intermediate circuit voltage are selectable.
You can choose a motor that meets your requirements (based on power, torque, speed, voltage, size, sensor type, etc.) in the Configurator below.
If the configurator does not offer the desired motor variant, you can select a motor with similar parameters and send us a request for modifications.
