TFS (sTorque) — ultra-compact PM synchronous motors 60–4400 kW, up to 140 000 Nm

Country: Germany · Model: TFS (sTorque)

TFS (sTorque) ultra-compact synchronous motors with permanent magnets and water cooling have a power of 60–4400 kW and a maximum torque of 400–140 000 Nm at speeds up to 3000 rpm. The series is chosen when maximum power density, low weight and low moment of inertia are needed at medium speeds. It is a drive for electric trucks, tunnel boring machines, test stands and ship propulsion.

Type: PM synchronous motor, water cooling
Max. torque: 400–140 000 Nm
Max. speed: up to 3000 rpm
Rated power: 60–4400 kW

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Technical specifications

Type	PM synchronous motor, water cooling
Max. torque	400–140 000 Nm
Max. speed	up to 3000 rpm
Rated power	60–4400 kW
Options	thrust bearing, hollow shaft, sensorless control, attached gearbox
Features	high power density, low weight and inertia, medium speed range
Protection	IP44–IP65 (synchronous family)

Specifications are taken from the manufacturer’s technical documentation. Updated 11/13/2026.

Description

High power density makes the TFS frame compact and light, and a low moment of inertia suits dynamic duty well. The motor is quiet, does not wear and needs no maintenance. The options offered are a thrust bearing, a hollow shaft, operation without a position sensor and an attached gearbox. For synchronous machines, liquid cooling and protection degrees IP44–IP65 are stated, so the choice of version depends on where the drive stands, in a workshop or on open machinery. The series is used on wheel and roller test stands, in thruster and azimuth propulsion of ships, and in winches with active heave compensation. In port equipment, the wheel motors of straddle carriers are made on such motors, and for marine projects PM motors and generators have been supplied in more than 100 installations.

How to choose

The main parameters for selection are torque and speed. TFS runs up to 3000 rpm with torque of 400–140 000 Nm. For higher torque at low speed, up to 260 000 Nm and 2000 rpm, look at TF; the TFZ series gives up to 1 400 000 Nm at 700 rpm. If 25 000 rpm is needed, take induction FQD(i) / QD.

Request a price and lead time

TFS (sTorque) — ultra-compact PM synchronous motors 60–4400 kW, up to 140 000 Nm. We reply within one business day.

Or email office@usk.ua or call +38 (044) 339-50-20.

FAQ

What are TFS (sTorque) motors intended for?

For drives where high power density, low weight and low inertia are needed at medium speeds, for example electric transport, tunnel boring machines, test stands.

What power and torque range does TFS have?

Rated power 60–4400 kW, maximum torque 400–140 000 Nm, speed up to 3000 rpm.

What cooling and protection does TFS have?

Cooling is liquid, water. Protection degrees IP44–IP65 are stated for the family of synchronous machines.

Which options are available for TFS?

A thrust bearing for axial loads, a hollow shaft, operation without a position sensor and an attached gearbox.

Is TFS used on ships?

Yes, in thruster and azimuth propulsion. For marine projects PM motors and generators have been supplied in more than 100 installations.