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Frameless Torque Motors
Torque Motors

QTR 160 Series – Frameless Torque Motor

Frameless rotary torque motor with continuous torque from 4.1 Nm to 36.3 Nm, peak torque from 6.2 Nm to 58.3 Nm and speeds up to 6,663 rpm. A 160 mm outside diameter with a 111 mm through bore.

Product Overview

Motion Type

Rotary
Technology

Frameless Torque
Product Range

Torque Motors
Series

QTR 160

Key Performance Specs

  • Continuous Torque Up To: 36.3 Nm
  • Speed Up To: 6663 rpm
  • Outside Diameter: 160 mm
  • Inside Diameter: 111 mm

Key Features

  • Continuous torque range 4.1 Nm to 36.3 Nm
  • Peak torque range 6.2 Nm to 58.3 Nm
  • Speed up to 6,663 rpm at maximum voltage
  • Speed up to 965 rpm at 48 V
  • Motor outside diameter 160 mm
  • Motor inside diameter 111 mm
  • N, Y and Z winding variants available
  • PTC 1 kΩ and KTY83-122 thermal protection
  • Frameless direct drive design

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QTR 160 Series – Frameless Torque Motor

QTR 160 Series of Frameless Rotary Torque Motors

Introducing the QTR 160 Series frameless rotary torque motor by Tecnotion. Torque motors excel in their direct drive capabilities, eliminating the need for a transmission or gearbox. The rotor of the torque motor is securely attached directly to the driven part, reducing transmission losses and eliminating the cost and maintenance associated with additional components. With no contact between the rotor and stator, mechanical wear is eliminated, resulting in reduced maintenance and extended lifespan. These motors provide a high continuous torque throughout the entire rev-range. The required torque and available space play a role in determining the motor’s diameter and width. This allows for slim motors in height but large in diameter for applications such as axles and turntables, or compact yet high-torque motors with similar height and diameter dimensions.

Applications for Torque Motors

Frameless torque motors find applications in a variety of industries and fields. They are commonly used in robotics, precision manufacturing, semiconductor manufacturing equipment, medical devices, aerospace, and defence systems. The compact design and high torque output make them ideal for applications where space is limited, yet high-performance and direct drive capabilities are required. Frameless torque motors are also well-suited for tasks that demand precise and accurate motion control, such as rotary tables, indexers, and positioning systems. Their versatility and reliability make them a preferred choice for demanding applications across multiple industries.

Product Specifications: QTR 160 Series – Frameless Torque Motor

QTR 160 Series Symbol Unit 160-17 N 160-17 Y 160-17 Z 160-25 N 160-25 Y 160-25 Z 160-34 N 160-34 Z 160-60 N
Motor type, max voltage ph-ph (3-phase synchronous) V ac rms (V dc) 230 (325) 420 (600)
Ultimate torque (magnet @ 25°C) Tu Nm 9.3 10.6 10.6 19.6 22.4 22.4 34.1 33.6 91.6
Peak torque (magnet @ 25°C) Tp Nm 6.2 7.1 7.1 12.5 14.2 14.2 21.7 21.4 58.3
Continuous torque (coil @ 100°C) Tc Nm 4.1 4.2 4.2 9.4 9.7 9.7 15.7 15.0 36.3
Maximum speed @ 48 V (@ Tc) nmax rpm 142 467 965 0 165 441 0 259 0
Maximum speed @ max. voltage (@ Tc) nmax rpm 2145 3871 6663 1084 2039 3604 555 2464 411
Motor torque constant (up to Ic) Kt Nm/Arms 0.96 0.54 0.31 1.92 1.07 0.62 3.45 0.93 9.20
Motor constant (coils @ 25°C) Km (Nm)²/W 0.12 0.13 0.13 0.35 0.38 0.38 0.73 0.67 2.29
Ultimate current (magnet @ 25°C) Iu Arms 13.8 28.2 48.8 13.8 28.2 48.8 13.3 48.8 13.5
Peak current (magnet @ 25°C) Ip Arms 7.6 15.4 26.7 7.6 15.4 26.7 7.3 26.7 7.4
Maximum continuous current (coils @ 100°C) Ic Arms 4.3 7.8 13.4 4.9 9.0 15.7 4.6 16.2 3.9
Back EMF phase-phase peak Ke V/krpm 82 46 26 164 92 53 295 79 787
Back EMF phase-phase rms Ke V/krpm 58 32 19 116 65 37 209 56 556
Coil resistance per phase (coils @ 25°C ex. cable) R Ω 2.47 0.75 0.25 3.47 1.03 0.35 5.45 0.44 12.30
Coil induction per phase (I < 0.6 Ip) L mH 4.89 1.57 0.52 7.68 2.45 0.82 15.0 1.11 47.9
Electrical time constant (coils @ 25°C) τe ms 2.0 2.1 2.1 2.2 2.4 2.4 2.8 2.5 3.9
Poles Nmgn nr 36
Continuous power loss (coils @ 100°C) Pc W 174 174 174 326 326 326 441 441 750
Thermal resistance (coils to mount. sfc.) Rth °C/W 0.43 0.43 0.43 0.23 0.23 0.23 0.17 0.17 0.10
Thermal time constant (up to 63% max. coil temp.) τth s 25 29 29 19 22 22 21 21 29
Temperature cut-off / sensor PTC 1 kΩ / KTY83-122

All specifications ±10%. Values assume a mounting surface at 20°C with the motor driven at maximum continuous current. Thermal resistance is based on radial mounting of the stator lamination stack. Maximum allowable speed for QTR-A 160 series motors is 12,000 rpm; please contact us for high speed applications.

Product Dimensions: QTR 160 Series – Frameless Torque Motor

QTR 160 Mechanical Symbol Unit 160-17 N 160-17 Y 160-17 Z 160-25 N 160-25 Y 160-25 Z 160-34 N 160-34 Z 160-60 N
Stator OD ODs mm 160
Rotor ID IDR mm 111
Motor height Hmotor mm 17 25 34 60
Lamination stack height Hlam mm 8 16 24 48
Rotor inertia JR kg·m² 4.7E-04 9.2E-04 1.4E-03 2.6E-03
Stator mass (excluding cables) MS g 527 875 1212 2555
Rotor mass MR g 138 269 401 754
Total mass (excluding cables) MT g 665 1144 1613 3309
Cable mass (all cables) m g 63 90 90 63 90 90 63 90 95
Cable type (power), length 0.5 m d mm (AWG) 6.5 (20) 6.7 (14) 6.7 (14) 6.5 (20) 6.7 (14) 6.7 (14) 6.5 (20) 6.7 (14) 9.6 (18)
Cable type (sensor), length 0.5 m d mm (AWG) 4.3 (26)

Product Technical Drawings: QTR 160 Series – Frameless Torque Motor

QTR 160 Series - Frameless Torque Motor technical drawing

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