Synchronous PM Motors - IE4/IE5


  • IE5 – efficiency ahead of its time
  • Combination of AC motor’s reliability and Brushless Servomotor's performance
  • High runners always in stock

Don’t wait for the future – it’s here NOW!

High Performance (HP) is a generation of permanent magnet (PM) synchronous motors that achieve Ultra Premium IE5 Efficiency level, combining the electrical design of brushless servo motors with the mechanical design of AC induction motors.

With higher efficiencies than standard AC induction motors, the HP range also enhances the power/weight ratio, thereby allowing for significant size and weight reductions down to 50%.

Thanks to the torque and the high efficiency, available through the complete speed range, the HPS series is targeted to both quadratic torque applications, typically in HVAC, as well as to constant torque applications like material handling, air compressors and vacuum pumps. These applications require high performances in continuous operation under variable speed, reducing the operating cost and weight/size of the system.

The motor range is based upon Surface Mounted Permanent Magnet (SMPM) design. PM motors typically use rare earth elements such as Samarium and Neodymium in the construction of the magnet elements.

Furthermore, in order to address market challenges and multiple application needs, Lafert have introduced for specific projects a cost effective Interior Permanent Magnet (IPM) design and Surface Mounted Permanent Magnet (SMPM) design and introduced different magnet elements more readily available, without applying rare earth magnets.

The complete range 0.37 kW to 37 kW are supplied as stand-alone motor (HPS range),or as motor-drive combined package (HPC range), or as motor-drive integrated unit (HPI range), specifically designed for their energy saving potential.

Lafert also offer flexibility in terms of design, customising the active and mechanical parts of the motor to suit specific customer requirements.


- Wide power output  0.37 - 37 kW | 0.50 - 50HP
- Torque range 2 Nm - 200 Nm  
- Compact range in IEC frames: 56 - 71 - 90 - 112 - 132 - 160
- Voltage: 3 phase 230 - 480 V
- Speed range up to 4500 RPM
- IEC mechanical configuration (B3, B5,...)
- NEMA mounting
- Ultra Premium Efficiency - IE5
- Super Premium Efficiency - IE4
- Sensorless control or with speed transducer
- Designed with different magnetic materials
- SMPM design or IPM design depending on the performance demand


- Lafert offers a strong competence level to support customization
- Full flexibility regarding motor speed

Certificate of Conformity UL - PM Motors
Declaration of Conformity CE - HPS Motors
Declaration WEEE Lafert S.p.A.
General Terms & Conditions of Sales - Lafert S.p.A. | Fusignano Plant
General Terms & Conditions of Sales - Lafert S.p.A. | Noventa Plant
General Terms & Conditions of Sales - Lafert S.p.A. | San Donà Plant



Welcome to the future of electric motors:
HP Combi, HPI, Ultra Compact Servomotors, Smartris
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Contact Us

Lafert S.p.A.
Via J.F. Kennedy 43
30027 San Donà di Piave
Venice - Italy

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