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Comprehensive Application Analysis of FA640 Shaft Dynamic Torque Sensor
Views: 0 Author: Site Editor Publish Time: 2026-08-04 Origin: Site
In the fields of automation equipment, power system R&D, and precision testing, torque is a core mechanical parameter for evaluating mechanical transmission performance, operational efficiency, and product reliability. Dynamic torque sensors can capture instantaneous torque fluctuations in real time under conditions of continuous high-speed rotation of rotating shafts, providing high-precision data support for test calibration, closed-loop control on production lines, and equipment fault diagnosis.
Our company specializes in the R&D and production of force and torque sensing products. The FA640 shaft dynamic torque sensor adopts German core technology and production equipment, complying with JB/T 12935-2016 industry standard, featuring non-contact signal transmission, 0.5%FS high precision, wide measuring range and ultra-high cost performance. It fills the demand gap of high-stability dynamic torque testing for test benches, automotive components, electric actuators, hydraulic valves and other industries, and has become a mainstream measuring instrument for engineering technical teams.
Product Basic Introduction
Working Principle
Adopting mature strain gauge electrical measurement technology, FA640 builds a high-precision strain bridge on the elastic shaft surface. When the shaft bears torsional load, the elastic shaft produces micro deformation, and the resistance of strain gauges changes synchronously. The power supply circuit collects the deformation electrical signal, demodulates and compensates through internal circuits, then converts it into standardized voltage or digital signal for output, realizing lossless and real-time accurate torque collection during rotation.
Core Product Advantages
Contactless transmission, maintenance-free and long service life
Non-contact transmission, maintenance-free & long service life Slip-ring-free friction structure, wireless coupling signal transmission, no mechanical wear, unlimited service life, no regular maintenance required for long-term high-speed operation.
Distortion-free measurement & high stiffness overload protection The signal response completely restores the instantaneous torque waveform, with built-in comprehensive overload protection; it supports 150% FS continuous working torque, 200% FS ultimate torque and 300% FS breaking torque, effectively avoiding sensor damage caused by misoperation.
Compact, shaft-mounted design for easy installation
Compact shaft structure & easy installation Both ends adopt standard keyway connection, small overall size and light weight, easy to transport and bench assembly; full range of 0.2~200Nm covers micro torque to medium-large torque test scenarios.
Multi-signal output, suitable for multi-channel data acquisition systems
Multi-signal output compatible with various acquisition systems Two power supply options: 12~28VDC and 24~28VDC; output includes ±5VDC, ±10VDC analog voltage and RS485 digital signal (Modbus-RTU protocol), compatible with industrial acquisition cards, PLC and host computer test software.
Adaptability to harsh environments; stable and reliable
Strong environmental adaptability & stable performance IP50 protection grade, stable operation at -10℃~60℃ and 0~95% RH non-condensing environment; 10g vibration resistance (20~2000Hz) and 500g/ms impact resistance, suitable for complex working conditions in laboratories and industrial workshops.
Key Technical Parameters
Customization service: Short-cycle customized products according to customer test conditions
Automatic machining centers and general mechanical test benches are core application scenarios of FA640. The sensor calibrates the performance of transmission components such as motors, reducers and couplings, collects start torque, rated torque, stall torque and transmission efficiency curves, and completes durability fatigue and impact load cycle tests. The micro range 0.2~10Nm fits micro motors and precision gear modules; 20~200Nm covers reducers and high-power transmission mechanism testing.
EPS Steering System Performance Testing
EPS steering gear performance test In bench test of electric power steering gear, the sensor detects dynamic steering torque, return torque and steering resistance in real time, draws torque-angle curves, verifies steering smoothness and durability, matching EPS factory inspection and R&D calibration demands of automobile manufacturers.
Valve and Throttle Torque Testing
Continuous torque monitoring during opening and closing of hydraulic valves, automobile throttles and rotary switches, capturing transient switch resistance and friction torque to evaluate valve sealing and rotational damping performance for factory qualification judgment of parts.
Calibration of torque wrenches and assembly tools
Torque wrench & assembly tool calibration Dynamic torque calibration of all kinds of electric torque wrenches and tightening tools, realizing closed-loop control of assembly torque to avoid over-tightening or under-tightening bolts and improve vehicle assembly consistency.
Automation & Special Machinery Engineering
Dynamic Measurement and Control of Electric Actuators
Dynamic measurement & control of electric actuators Full-process torque monitoring of industrial electric actuators and servo rotary modules, real-time feedback of load fluctuation. The control system adjusts output power according to torque signals to prevent overload jamming and ensure stable operation of valves and pipeline actuators.
Service life testing of bearings and transmission components
Life test of bearings and transmission parts Supporting bearing, gear and transmission shaft fatigue test benches, collecting alternating torque data for a long time, analyzing wear rate and transmission loss, optimizing part structural design and extending overall service life.
Process Measurement & Industrial Automatic Control
For on-line production monitoring, FA640 is installed in series on the transmission spindle and uploads torque data to PLC control system in real time. It automatically triggers alarm and shutdown protection when torque exceeds the threshold, realizing intelligent fault early warning during production; synchronously calculates real-time equipment power to optimize process parameters and reduce energy consumption.
Product Selection & Supporting Services
Standard Selection Code Rule
FA640-NM1-P-V±5-C-G12
FA640: Shaft dynamic torque sensor series
NMXX: Rated torque (NM0.2~NM200)
N/P: Without keyway / with standard keyway
V±5/V±10/RS: ±5V analog / ±10V analog / RS485 digital output
C: Standard accuracy 0.5%FS
G12/G13: 12~28VDC power supply / 24~28VDC power supply
D: Customized requirements for special working conditions
Accessories & After-sales Support
Optional M12 straight/elbow aviation plug cables for on-site electrical wiring. The company provides 24-hour technical hotline 400-600-4496, one-stop solutions including lifetime maintenance, factory calibration and non-standard customization, fully supporting customers with bench debugging, signal matching and troubleshooting.
As intelligent manufacturing and precision testing industries upgrade, dynamic torque measurement has become an indispensable core link for R&D, quality inspection and on-line operation maintenance of power equipment. Relying on stable measurement performance, wide range, flexible signal output and maintenance-free structure, FA640 shaft dynamic torque sensor covers all scenarios from micro precision testing to medium-large industrial transmission, balancing accuracy and cost advantages.
In the future, our company will continuously iterate torque sensing technology, expand customized models for high/low temperature, explosion-proof, high-speed and heavy-load conditions, and provide more professional integrated torque testing solutions for customers in test bench, automobile, automation and hydraulic equipment industries, helping the manufacturing industry continuously improve testing accuracy and intelligence level.
FAQ
Q1: What is a dynamic rotary torque sensor?
A: A dynamic rotary torque sensor is designed to measure the torque generated by rotating shafts in real time. It can simultaneously monitor torque, rotational speed, and mechanical power, making it suitable for motors, gearboxes, pumps, test benches, and industrial automation systems.
Q2: What applications are dynamic torque sensors used for?
A:
Dynamic rotary torque sensors are widely used in:
Electric motor testing
Servo motor performance evaluation
Gearbox efficiency testing
Industrial automation equipment
Robotics
Automotive transmission testing
Pump and fan performance testing
Engine dynamometers
New energy equipment
Research laboratories.
Q3: Can the sensor measure torque while rotating?
A: Yes. Unlike static torque sensors, dynamic rotary torque sensors are specifically designed to measure torque continuously during shaft rotation with high accuracy and excellent repeatability.
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