Skip to main content
Frameless Torque Motors
Torque Motors

QTR 105 Series – Frameless Torque Motor

Frameless rotary torque motor with continuous torque from 1.4 Nm to 12 Nm, peak torque from 1.9 Nm to 28.4 Nm and speeds up to 12,286 rpm. A 105 mm outside diameter with a 56 mm through bore.

Product Overview

Motion Type

Rotary
Technology

Frameless Torque
Product Range

Torque Motors
Series

QTR 105

Key Performance Specs

  • Continuous Torque Up To: 12 Nm
  • Speed Up To: 12286 rpm
  • Outside Diameter: 105 mm
  • Inside Diameter: 56 mm

Key Features

  • Continuous torque range 1.4 Nm to 12 Nm
  • Peak torque range 1.9 Nm to 28.4 Nm
  • Speed up to 12,286 rpm at maximum voltage
  • Speed up to 3,300 rpm at 48 V
  • Motor outside diameter 105 mm
  • Motor inside diameter 56 mm
  • N, Y and Z winding variants available
  • PTC 1 kΩ and KTY83-122 thermal protection
  • Frameless direct drive design

Request a Quote

QTR 105 Series – Frameless Torque Motor

QTR 105 Series of Frameless Rotary Torque Motors

Introducing the QTR 105 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 105 Series – Frameless Torque Motor

QTR 105 Series Symbol Unit 105-17 N 105-17 Y 105-17 Z 105-25 N 105-25 Y 105-25 Z 105-34 N 105-34 Y 105-34 Z 105-60 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 2.9 3.3 3.3 6.1 7.5 6.9 10.6 11.3 10.4 28.4
Peak torque (magnet @ 25°C) Tp Nm 1.9 2.2 2.2 3.9 4.4 4.4 6.7 6.6 6.6 18.1
Continuous torque (coil @ 100°C) Tc Nm 1.4 1.4 1.4 3.2 3.3 3.3 5.4 5.2 5.2 12.0
Maximum speed @ 48 V (@ Tc) nmax rpm 784 1761 3300 240 783 1623 0 444 1028 0
Maximum speed @ max. voltage (@ Tc) nmax rpm 6890 12286 16500 3625 6534 11399 1928 4439 7833 1455
Motor torque constant (up to Ic) Kt Nm/Arms 0.30 0.17 0.10 0.60 0.33 0.19 1.07 0.50 0.29 2.86
Motor constant (coils @ 25°C) Km (Nm)²/W 0.021 0.022 0.022 0.061 0.065 0.065 0.127 0.115 0.120 0.40
Ultimate current (magnet @ 25°C) Iu Arms 13.8 28.2 48.8 13.8 28.2 48.8 13.3 28.2 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 15.4 26.7 7.37
Maximum continuous current (coils @ 100°C) Ic Arms 4.6 8.5 14.7 5.3 9.8 17.0 5.1 10.3 17.9 4.2
Back EMF phase-phase peak Ke V/krpm 25 14 8 51 28 16 92 43 25 244
Back EMF phase-phase rms Ke V/krpm 18 10 6 36 20 12 65 30 17 173
Coil resistance per phase (coils @ 25°C ex. cable) R Ω 1.38 0.43 0.14 1.93 0.57 0.19 3.02 0.74 0.24 6.84
Coil induction per phase (I < 0.6 Ip) L mH 2.58 0.83 0.28 4.05 1.29 0.43 7.93 1.75 0.59 25.3
Electrical time constant (coils @ 25°C) τe ms 1.9 2.0 1.9 2.1 2.3 2.2 2.6 2.4 2.4 3.7
Poles Nmgn nr 20 20 20 20 20 20 20 20 20 20
Continuous power loss (coils @ 100°C) Pc W 115 115 115 214 214 214 300 300 300 469
Thermal resistance (coils to mount. sfc.) Rth °C/W 0.65 0.65 0.65 0.35 0.35 0.35 0.25 0.25 0.25 0.16
Thermal time constant (up to 63% max. coil temp.) τth s 21 25 25 16 18 18 17 17 17 25
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 105 series motors is 16,500 rpm; please contact us for high speed applications.

Product Dimensions: QTR 105 Series – Frameless Torque Motor

QTR 105 Mechanical Symbol Unit 105-17 N 105-17 Y 105-17 Z 105-25 N 105-25 Y 105-25 Z 105-34 N 105-34 Y 105-34 Z 105-60 N
Stator OD ODs mm 105
Rotor ID IDR mm 56
Motor height Hmotor mm 17 25 34 60
Lamination stack height Hlam mm 8 16 24 48
Rotor inertia JR kg·m² 8.0E-05 1.5E-04 2.2E-04 4.3E-04
Stator mass (excluding cables) MS g 299 472 746 1476
Rotor mass MR g 79 146 218 433
Total mass (excluding cables) MT g 378 618 964 1909
Cable mass (all cables) m g 63 90 90 63 90 90 63 90 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) 6.7 (14) 9.6 (18)
Cable type (sensor), length 0.5 m d mm (AWG) 4.3 (26)

Product Technical Drawings: QTR 105 Series – Frameless Torque Motor

QTR 105 Series - Frameless Torque Motor technical drawing

Related Products