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Frameless Torque Motors
Torque Motors

QTL 210 Series – Frameless Torque Motor

High torque frameless rotary motor with continuous torque from 65 Nm to 142 Nm, peak torque from 140 Nm to 281 Nm and speeds up to 716 rpm. A 210 mm outside diameter with a 140 mm through bore.

Product Overview

Motion Type

Rotary
Technology

Frameless Torque
Product Range

Torque Motors
Series

QTL 210

Key Performance Specs

  • Continuous Torque Up To: 142 Nm
  • Speed Up To: 716 rpm
  • Outside Diameter: 210 mm
  • Inside Diameter: 140 mm

Key Features

  • Continuous torque range 65 Nm to 142 Nm
  • Peak torque range 140 Nm to 281 Nm
  • Speed up to 716 rpm at 680 V dc
  • Motor outside diameter 210 mm
  • Motor inside diameter 140 mm
  • Motor heights 65 mm, 85 mm and 105 mm
  • PTC 1 kΩ and PT1000 thermal protection
  • Frameless direct drive design

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QTL 210 Series – Frameless Torque Motor

QTL 210 Series of Frameless Rotary Torque Motors

Introducing the QTL 210 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: QTL 210 Series – Frameless Torque Motor

QTL 210 Series Symbol Unit QTL-A 210-65 QTL-A 210-85 QTL-A 210-105
Winding type N N N
Motor type, max voltage ph-ph (3-phase synchronous) V ac rms (V dc) 480 (680)
Ultimate torque (magnet @ 25°C) Tu Nm 173 259 346
Peak torque (magnet @ 25°C) Tp Nm 140 211 281
Continuous torque (coil @ 100°C) Tc Nm 65 103 142
Stall torque (coil @ 100°C) Ts Nm 46 73 100
Maximum speed (@ Tc @ 680 V dc) nmax rpm 716 457 326
Motor torque constant (up to Ic) Kt Nm/Arms 8.7 13.1 17.5
Motor constant (coils @ 25°C) Km (Nm)²/W 8.0 13.5 19.2
Ultimate current (magnet @ 25°C) Iu Arms 22.0 22.0 22.0
Peak current (magnet @ 25°C) Ip Arms 16.9 16.9 16.9
Maximum continuous current (coils @ 100°C) Ic Arms 7.45 7.88 8.11
Stall current (coils @ 100°C) Is Arms 5.27 5.57 5.74
Back EMF phase-phase peak Ke V/krpm 747 1121 1494
Back EMF phase-phase rms Ke V/krpm 528 793 1057
Coil resistance per phase (coils @ 25°C ex. cable) R Ω 3.18 4.25 5.31
Coil induction per phase (I < 0.6 Ip) L mH 16.0 22.3 28.7
Electrical time constant τe ms 5.0 5.3 5.4
Poles Nmgn nr 26
Continuous power loss (coils @ 100°C) Pc W 690 1028 1363
Thermal resistance (coils to mount. sfc.) Rth °C/W 0.116 0.078 0.059
Thermal time constant τth s 53 47 45
Temperature cut-off / sensor PTC 1 kΩ (3x) / PT1000 (3x)

All specifications ±10%. Actual values depend on bus voltage. 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.

Product Dimensions: QTL 210 Series – Frameless Torque Motor

QTL 210 Mechanical Symbol Unit QTL-A 210-65 QTL-A 210-85 QTL-A 210-105
Stator OD ODs mm 210
Rotor ID IDR mm 140
Motor height Hmotor mm 65 85 105
Lamination stack height Hlam mm 40 60 80
Rotor inertia JR kg·m² 0.009 0.014 0.019
Stator mass (excluding cables) MS kg 4.2 5.9 7.5
Rotor mass MR kg 1.6 2.4 3.2
Total mass (excluding cables) MT kg 5.8 8.3 10.7
Cable mass (all cables) m g 500
Cable type (power), length 2 m d mm (AWG) 10.6 (13)
Cable type (sensor), length 2 m d mm (AWG) 6.4 (25)

Product Technical Drawings: QTL 210 Series – Frameless Torque Motor

QTL 210 Series - Frameless Torque Motor technical drawing

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