High-Torque Motors SIMOTICS HT Series HT-direct

Lower Operating Costs - Higher Availability

General description

The SIMOTICS HT Series HT-direct high-torque motors are permanent-magnet synchronous motors that can provide high torques at low speeds directly at the driven machine. High efficiencies and good power factors can also be achieved at low speeds as a result of the permanent magnet rotors.

The SIMOTICS HT Series HT-direct high-torque motors are offered as a harmonized system together with SINAMICS drive converters. The HT-direct motor / SINAMICS drive converter represents a drive solution with a long service lifetime but with low lifecycle costs and high efficiency for applications with low operating speeds.


Technical data overview

Brief overview

Water-jacket cooled motors:

200 to 2080 kW

6000 to 42000 Nm

Forced air cooled motors:

150 to 1250 kW
5000 to 23000 Nm

Shaft height:

400, 450, 500 mm

Rated speed:

200, 300, 400, 500, 600, 800 min -1

Rated voltage:

400, 460, 690 V

Frequency converter:

Operation with and without encoder

Degree of protection:


Cooling method:

IC71W (water-jacket cooled)
IC416 (rib-cooled with forced air cooled)

Type of construction:

IM V1 (on demand)


Deep-groove ball bearing with grease lubrication and regreasing device



Customer benefits

  • With slow-running drives, the efficiency of the HT-direct series is approximately 2 to 3 % higher than for similar drive concepts, if gear or gear steps can be saved. For a 1000 kW motor, this results in a saving of 33 kW, which is an annual saving of approximately 15000 € for an operating time of 8 hours per day.

  • High pole design in combination with permanent magnet technology ensures that the space requirement and mass of the motors are lower than for similar asynchronous machines. The slow-running motors of the HT-direct series obviate the need for a gearbox in many cases (reduction in engineering, assembly and maintenance outlay, lower investment and lower operating costs).

  • Efficient, optimally matched drive system, SINAMICS converter and HT-direct motor for operation with or without encoders.

  • Thanks to their long service life (nominal bearing lifetime > 60000 hours), HT-direct high-torque motors are maintenance-free and have a high availability especially for applications in which a gearbox can be omitted.

  • Environmentally-friendly system (where applicable, no disposal of gearbox oil is necessary; energy-saving drive system).

  • Customization is possible

Typical applications

Applications where the following are important - high efficiency, low space requirements with low lifecycle costs for the drive solution. The main application of the SIMOTICS HT Series HT-direct high-torque motors areas are as follows:

  • Paper industry as roller and press drive

  • Marine industry as propeller drive (main and auxiliary drives)

  • Mining industry for mill drives

  • Steel industry e.g. for shears

  • Plastics industry as drive for extruder worms, foil-drawing machines

  • Crane industry for the widest range of applications

  • Sugar industry for sugar centrifuges