QTA141

Micro Reaction Torque Sensor

3 Products

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Item Number	Torque CapacityME	Torque Sensor Type	Mounting Type	Output Type	Height In Inches	Length In Inches	Width In Inches	Outer Diameter In Inches	Inner Diameter In Inches	Features	Max Operating TemperatureME	Min Operating TemperatureME	Nonrepeatability	Nonlinearity	Input Resistance	Max Excitation	Safe Overload	Connection Type	Ip / Nema Rating	Cable Length	# Of Bridges/channels	Thread Size	Cable Type	Material	Temperature Shift Zero	Max Compensated TemperatureME	Min Compensated TemperatureME	Description	Weight In Lb	Custom Special
QSH02113	8.8507 in-lb	Reaction	Flange	mV/V	0.394	0.866	0.866	0.866	0.3937	RoHS	200 F	-60 F	0.2 %RO	0.5 %RO	350 Ohm	7 VDC	150 %RO	Cable	IP20	6 in	1	M2.5x0.45	34 Awg 4 Conductor Braided Cable	2024-T4	0.02 TSZ	160 F	60 F	QTA141 , 1 N-m , Custom Micro Thru Hole Reaction Torque Sensor , RoHS Compliant , 10 mm ID x 22 mm OD x 10 mm H , Material - 2024-T4 , 34 Awg 4 Conductor Braided Cable , 6 in Long	0.02	N
QSH02117	13.2761 in-lb	Reaction	Flange	mV/V	0.394	0.866	0.866	0.866	0.3937	RoHS	200 F	-60 F	0.2 %RO	0.5 %RO	1000 Ohm	7 VDC	200 %RO	Cable	IP20	6 in	1	M2.5x0.45	34 Awg 4 Conductor Braided Cable	2024-T4	0.02 TSZ	160 F	60 F	QTA141 , 1.5 N-m , Custom Micro Thru Hole Reaction Torque Sensor , RoHS Compliant , 10 mm ID x 22 mm OD x 10 mm H. , Material - 2024-T4 , 34 Awg 4 Conductor Braided Cable , 6 in Long	0.02	Y
QSH02116	17.7014 in-lb	Reaction	Flange	mV/V	0.394	0.866	0.866	0.866	0.3937	RoHS	200 F	-60 F	0.2 %RO	0.5 %RO	1000 Ohm	7 VDC	150 %RO	Cable	IP20	6 in	1	M2.5x0.45	34 Awg 4 Conductor Braided Cable	2024-T4	0.02 TSZ	160 F	60 F	QTA141 , 2 N-m , Custom Micro Thru Hole Reaction Torque Sensor , RoHS Compliant , 10 mm ID x 22 mm OD x 10 mm H , Material - 2024-T4 , 34 Awg 4 Conductor Braided Cable , 6 in Long	0.02	Y

> QTA141

Minuscule size with state-of-the art precision

diameter: 22mm
height: 10mm
weight: 9.1g
capacity: 8.9in-lb to 17.7in-lb

The QTA141 micro reaction torque sensor is the smallest torque sensor in FUTEK's catalog. Its unique geometry allows it to fit in applications where precision closed-loop torque measurements have previously not been possible. It allows for multiple mounting configurations and can be integrated with electronics for custom requirements. By matching the motor/gearhead assembly diameter without adding to its size, the QTA141 allows for precise torque measurement in a very dense array, which maximizes the real state utilization of the assembly. Its unique motor mounting provisions do not require adapters, which would increase the system's height and weight. It’s especially well-suited for the fast-growing market of medical surgical robots, but offers excellent performance for any dynamic application. This model can also be modified to suit OEM applications. FUTEK offers application and engineering resources during DFM/DFX stage upon request.

Small and lightweight

The super small size of the QTA141 sensor at 0.86in (22mm) dia and 0.39in (10mm) height allows integration into systems and devices where space is at a premium, such as MedTech applications. At about 9g in weight, these sensors are also ideal for drones and even cube satellites.

Dynamic measurement and control

The sensor can be mounted directly onto a brushless DC motor. The motor power can be controlled based on the torque feedback, providing dynamic feedback and precise control of the power that is used. In surgical applications, this can drastically reduce suture breakage.

Mounting provisions

When mounting the QTA141 to a brushless DC motor, it needs to be installed with the motor shaft passing through the sensor’s through-hole without touching its inner diameter to avoid the indirect forces from the motor influencing the sensor’s measurements. To achieve this, a coupler can be used to extend the shaft and allow it to pass freely through the sensor.

Made to be accurate

A resistive circuit that converts torque input into a differential voltage output is the basic technology used in the sensor. Characteristics such as linearity, hysteresis, creep, stability, output shift over a temperature range, and off-axis load compensation are all taken care of in the design of this miniature sensor, guaranteeing high precision and reliability. Two models are available, one with 350 Ohm resistance and the other with 1000 Ohm resistance, covering torque ranges up to 1Nm and 2Nm respectively. The connector cable is of grade #34AWG, a 4-conductor cable with a braided cover that is 15cm long.

Ideal for medical robotics

The high-precision feedback offered by the QTA141 allows precise control of instruments in robotic surgery, providing fast response time and instant adaptation to torque variations. The low height of 10mm allows easy integration of the sensor to most joints and motors, providing a high degree of design flexibility and even late-stage addition to instruments. These sensors help enhance robotic platform dexterity, a key parameter for robotic learning. Specifically in robotic surgeries, the sensor enhances assessment of anatomical structures and improved tissue characterization and manipulation.

Wide applications

Miniature stationary and dynamic torque sensors find applications in surgical robots, dental drills, precision machining and assembly operations, directional control units in cube satellites, machining of composites, rheometers in pharma and chemical plants, microinjection molding force feedback units, prosthetic controls, as well as drones and UAVs.

Made in California

Designed and manufactured in-house. Our multidisciplinary engineering teams, high precision machining center, state-of-the-art quality assurance systems, and R&D and manufacturing facilities are all under one roof, allowing us to continuously reinvent and refine our products and processes.