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Tecnotion

QTR-A-65-17

Model / article: QTR-A-65-17

QTR-A-65-17 is listed by Tecnotion in Frameless torque motors. Published model data includes Continuous output torque: 0.28 Nm (continuous); Product mass: 176 g. See the specification table for operating conditions and source evidence.

Published QTR 65 sizes with N/N/Y/Y windings. Continuous ratings require the specified mounting surface and winding temperatures.

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Product overview

Manufacturer / supplier
Tecnotion
Series
QTR 65 frameless torque motors
Component type
Frameless torque motors
Source
Open published source

Published pricing

No verified public price indexed for this model. Contact PartMeld for a supplier inquiry.

Reading this model’s source

QTR-A-65-17: winding and rating conditions

The reviewed QTR65 sheet assigns winding N to this model. The 65-34 and 65-60 columns use Y; keep each column’s configuration separate.

Continuous torque
0.28 N·m, with coils at 100°C and mounting surface at 20°C, at stall or continuous current (footnote 1).
Peak torque
0.41 N·m, with magnets at 25°C and a 6 K/s magnet temperature rise. This condition does not state an allowed peak duration.
Specification tolerance
±10% for the sheet’s specifications.

Tecnotion QTR65 specification sheet, revision 2.4, page 1. Source checked ; this is an editorial source reading, not supplier approval.

Before shortlisting, confirm bus voltage, current basis, cooling, speed and duty for your application. Read the torque-rating comparison guide.

Published specifications

Values are shown as published. Conditions, rating basis and source evidence apply to each value.

Latest source observation: . Observation dates record evidence collection, not supplier re-verification.

Specifications and source evidence for QTR-A-65-17
SpecificationPublished valueConditions and source
Peak back-EMF constantModel-level statement5.0 V/krpm

rule validated

Operating conditions
ordering scope
published size with stated winding; options require confirmation
tolerance
+/-10%
voltage definition
line-to-line peak
winding
N
Source evidence
QTR-A-65-17 | Back EMF ph-ph peak: 5.0 V/krpm | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'voltage_definition': 'line-to-line peak', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Back EMF ph-ph peak

Source observed: 2026-09-13View source
RMS back-EMF constantModel-level statement3.6 V/krpm

rule validated

Operating conditions
ordering scope
published size with stated winding; options require confirmation
tolerance
+/-10%
voltage definition
line-to-line RMS
winding
N
Source evidence
QTR-A-65-17 | Back EMF ph-ph rms: 3.6 V/krpm | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'voltage_definition': 'line-to-line RMS', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Back EMF ph-ph rms

Source observed: 2026-09-13View source
Continuous RMS currentModel-level statement4.78 ArmsRating: continuous

rule validated

Operating conditions
coil temperature c
100
mounting surface temperature c
20
operating condition
stall or continuous current
ordering scope
published size with stated winding; options require confirmation
tolerance
+/-10%
winding
N
Source evidence
QTR-A-65-17 | Continuous current: 4.78 Arms | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'coil_temperature_c': 100, 'mounting_surface_temperature_c': 20, 'operating_condition': 'stall or continuous current', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Continuous current

Source observed: 2026-09-13View source
Continuous power lossModel-level statement50 W

rule validated

Operating conditions
coil temperature c
100
mounting surface temperature c
20
operating condition
stall or continuous current
ordering scope
published size with stated winding; options require confirmation
tolerance
+/-10%
winding
N
Source evidence
QTR-A-65-17 | Continuous power loss: 50 W | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'coil_temperature_c': 100, 'mounting_surface_temperature_c': 20, 'operating_condition': 'stall or continuous current', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Continuous power loss

Source observed: 2026-09-13View source
Continuous output torqueModel-level statement0.28 NmRating: continuous

rule validated

Operating conditions
coil temperature c
100
mounting surface temperature c
20
operating condition
stall or continuous current
ordering scope
published size with stated winding; options require confirmation
tolerance
+/-10%
winding
N
Source evidence
QTR-A-65-17 | Continuous torque: 0.28 Nm | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'coil_temperature_c': 100, 'mounting_surface_temperature_c': 20, 'operating_condition': 'stall or continuous current', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Continuous torque

Source observed: 2026-09-13View source
Electrical time constantModel-level statement1.8 ms

rule validated

Operating conditions
ordering scope
published size with stated winding; options require confirmation
tolerance
+/-10%
winding
N
Source evidence
QTR-A-65-17 | Electrical time constant: 1.8 ms | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Electrical time constant

Source observed: 2026-09-13View source
Lamination stack heightModel-level statement8 mm

rule validated

Operating conditions
ordering scope
published size with stated winding; options require confirmation
tolerance
+/-10%
winding
N
Source evidence
QTR-A-65-17 | Lamination stack height: 8 mm | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Lamination stack height

Source observed: 2026-09-13View source
Product massModel-level statement176 g

rule validated

Operating conditions
cables
excluded
ordering scope
published size with stated winding; options require confirmation
tolerance
+/-10%
winding
N
Source evidence
QTR-A-65-17 | Total mass: 176 g | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'cables': 'excluded', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Total mass

Source observed: 2026-09-13View source
Maximum output speedModel-level statement10000 rpm

rule validated

Operating conditions
load
continuous torque
ordering scope
published size with stated winding; options require confirmation
tolerance
+/-10%
voltage definition
maximum motor voltage
winding
N
Source evidence
QTR-A-65-17 | @ Umax @ Tc: 10000 rpm | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'voltage_definition': 'maximum motor voltage', 'load': 'continuous torque', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / @ Umax @ Tc

Source observed: 2026-09-13View source
Maximum output speedModel-level statement5955 rpm

rule validated

Operating conditions
load
continuous torque
ordering scope
published size with stated winding; options require confirmation
tolerance
+/-10%
voltage v
48
winding
N
Source evidence
QTR-A-65-17 | @ 48 Vdc @ Tc: 5955 rpm | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'voltage_v': 48, 'load': 'continuous torque', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / @ 48 Vdc @ Tc

Source observed: 2026-09-13View source
Squared motor constantModel-level statement0.0021 (Nm ) 2 /W

rule validated

Operating conditions
coil temperature c
25
ordering scope
published size with stated winding; options require confirmation
tolerance
+/-10%
winding
N
Source evidence
QTR-A-65-17 | Motor constant: 0.0021 (Nm ) 2 /W | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'coil_temperature_c': 25, 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Motor constant

Source observed: 2026-09-13View source
Outer diameterModel-level statement65 mm

rule validated

Operating conditions
ordering scope
published size with stated winding; options require confirmation
tolerance
+/-10%
winding
N
Source evidence
QTR-A-65-17 | Stator OD: 65 mm | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Stator OD

Source observed: 2026-09-13View source
Overall lengthModel-level statement18.3 mm

rule validated

Operating conditions
ordering scope
published size with stated winding; options require confirmation
tolerance
+/-10%
winding
N
Source evidence
QTR-A-65-17 | Stator height: 18.3 mm | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Stator height

Source observed: 2026-09-13View source
Peak RMS currentModel-level statement7.49 ArmsRating: peak

extracted

Operating conditions
magnet temperature c
25
ordering scope
published size with stated winding; options require confirmation
tolerance
+/-10%
winding
N
Source evidence
QTR-A-65-17 | Peak current: 7.49 Arms | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'magnet_temperature_c': 25, 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Peak current

Source observed: 2026-09-13View source
Peak output torqueModel-level statement0.41 NmRating: peak

extracted

Operating conditions
duration note
duration not published
magnet temperature c
25
ordering scope
published size with stated winding; options require confirmation
temperature rise rate k s
6
tolerance
+/-10%
winding
N
Source evidence
QTR-A-65-17 | Peak torque: 0.41 Nm | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'magnet_temperature_c': 25, 'temperature_rise_rate_k_s': 6, 'duration_note': 'duration not published', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Peak torque

Source observed: 2026-09-13View source
Phase inductanceModel-level statement1.01 mH

rule validated

Operating conditions
current condition
I < 0.6 peak current
ordering scope
published size with stated winding; options require confirmation
tolerance
+/-10%
winding
N
Source evidence
QTR-A-65-17 | Induction per phase: 1.01 mH | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'current_condition': 'I < 0.6 peak current', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Induction per phase

Source observed: 2026-09-13View source
Phase resistanceModel-level statement0.563 Ω

rule validated

Operating conditions
cables
excluded
coil temperature c
25
ordering scope
published size with stated winding; options require confirmation
tolerance
+/-10%
winding
N
Source evidence
QTR-A-65-17 | Resistance per phase: 0.563 Ω | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'coil_temperature_c': 25, 'cables': 'excluded', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Resistance per phase

Source observed: 2026-09-13View source
Rotor inertiaModel-level statement3.8E-06 kg m 2

rule validated

Operating conditions
ordering scope
published size with stated winding; options require confirmation
tolerance
+/-10%
winding
N
Source evidence
QTR-A-65-17 | Rotor inertia: 3.8E-06 kg m 2 | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Rotor inertia

Source observed: 2026-09-13View source
Rotor massModel-level statement27 g

rule validated

Operating conditions
ordering scope
published size with stated winding; options require confirmation
tolerance
+/-10%
winding
N
Source evidence
QTR-A-65-17 | Rotor mass: 27 g | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Rotor mass

Source observed: 2026-09-13View source
Stator massModel-level statement149 g

rule validated

Operating conditions
cables
excluded
ordering scope
published size with stated winding; options require confirmation
tolerance
+/-10%
winding
N
Source evidence
QTR-A-65-17 | Stator mass: 149 g | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'cables': 'excluded', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Stator mass

Source observed: 2026-09-13View source
Thermal resistanceModel-level statement1.50 K/W

rule validated

Operating conditions
ordering scope
published size with stated winding; options require confirmation
thermal path
coils to mounting surface
tolerance
+/-10%
winding
N
Source evidence
QTR-A-65-17 | Thermal resistance: 1.50 K/W | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'thermal_path': 'coils to mounting surface', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Thermal resistance

Source observed: 2026-09-13View source
Thermal time constantModel-level statement17 s

rule validated

Operating conditions
ordering scope
published size with stated winding; options require confirmation
tolerance
+/-10%
winding
N
Source evidence
QTR-A-65-17 | Thermal time constant: 17 s | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Thermal time constant

Source observed: 2026-09-13View source
Clear through-bore diameterModel-level statement17 mm

rule validated

Operating conditions
ordering scope
published size with stated winding; options require confirmation
tolerance
+/-10%
winding
N
Source evidence
QTR-A-65-17 | Rotor ID: 17 mm | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Rotor ID

Source observed: 2026-09-13View source
RMS torque constantModel-level statement0.059 Nm/Arms

rule validated

Operating conditions
current condition
I <= continuous current
ordering scope
published size with stated winding; options require confirmation
tolerance
+/-10%
winding
N
Source evidence
QTR-A-65-17 | Motor torque constant: 0.059 Nm/Arms | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'current_condition': 'I <= continuous current', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Motor torque constant

Source observed: 2026-09-13View source
Ultimate torqueModel-level statement0.64 Nm

rule validated

Operating conditions
duration note
not a continuous rating
magnet temperature c
25
ordering scope
published size with stated winding; options require confirmation
temperature rise rate k s
20
tolerance
+/-10%
winding
N
Source evidence
QTR-A-65-17 | Ultimate torque: 0.64 Nm | {'tolerance': '+/-10%', 'ordering_scope': 'published size with stated winding; options require confirmation', 'magnet_temperature_c': 25, 'temperature_rise_rate_k_s': 20, 'duration_note': 'not a continuous rating', 'winding': 'N'}

PDF p.1 / QTR-A-65-17 / Ultimate torque

Source observed: 2026-09-13View source

Technical documents and resources

Confirm the exact configuration, price, availability and operating conditions with the supplier before ordering.

Report a specification error