AC torque motor QTR 78 series
synchronous3-phase400 V

AC torque motor - QTR 78 series - Tecnotion - synchronous / 3-phase / 400 V
AC torque motor - QTR 78 series - Tecnotion - synchronous / 3-phase / 400 V
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Characteristics

Type
synchronous, AC, 3-phase
Voltage
400 V
Configuration
permanent magnet, compact, frameless, small
Number of poles
multipole
Applications
for machine tools, for robotics, for rotary tables, for industrial applications, for the semiconductor industry
Other characteristics
direct-drive, motion control, precision
Power

Min.: 0 W
(0 hp)

Max.: 3,650.71 W
(4.96 hp)

Intensity

Min.: 0 A

Max.: 27.96 A

Torque

Min.: 0 Nm
(0 ft.lb)

Max.: 10.91 Nm
(8.046803 ft.lb)

Rotational speed

Min.: 0 rpm
(0 rad.min-1)

Max.: 9,000 rpm
(56,548.6678 rad.min-1)

Diameter

Min.: 78 mm
(3.07 in)

Max.: 78 mm
(3.07 in)

Operating temperature

Min.: 20 °C
(68 °F)

Max.: 100 °C
(212 °F)

Description

QTR78 SERIES
The QTR 78 is the second size available in the Tecnotion QTR range. This series offers a continuous torque range from 0.57 to 4.47 Nm. The largest QTR 78-60 motor offers a peak torque of over 7.6Nm.

To provide maximum flexibility and integration, the QTR 78 uses flying leads instead of a power cable. The build heights of the QTR 78 are: 78-17 // 78-25 // 78-34 // 78-60. Check all advantages and features for an explanation of torque motors.

Key features

Torque
  • Ultimate torque: 1.24 – 10.91 Nm
  • Peak torque: 0.84 – 7.67 Nm
  • Continuous torque: 0.57- 4.47 Nm
  • The build heights are: 78-17 // 78-25 // 78-34 // 78-60
  • Optimized for low-voltage operation
  • Compact installation envelope for space-constrained designs
  • Flying leads (no fixed power cable) for maximum integration flexibility

Applications
Tecnotion direct drive motors are seamlessly integrated into a wide variety of applications, such as semi-conductors, machine tooling, robotics, display applications and printing industry. We direct drive your motion technology.
  • Semiconductor equipment and wafer handling
  • Precision motion stages and translational systems
  • Machine tooling and digital cutting equipment
  • Robotics and end-effectors
  • Display and printing machinery
  • And more

Resources
  • Torque manual
  • Torque motors brochure
  • Motor portfolio brochure
  • QMT torque motor series – brochure
  • QTR 78 series – Spec sheet
  • QTR 78 series – CAD file

Exhibitions

Meet this supplier at the following exhibition(s):

Precision Fair
Precision Fair

18-19 Nov 2026 's-Hertogenbosch (Netherlands) Hall 3 - Stand 434

  • More information
    *Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.