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The DW-35 Digital Torque Tester is an intelligent torque detection tool specially designed for railway track fastening systems. It is suitable for the precise torque verification of rail fastener bolts in high-speed railways, conventional railways, subways and other scenarios. Equipped with high-precision sensors and a digital display module, the device can provide real-time feedback on the applied torque value to ensure that each bolt meets the designed pre-tightening force standard. Its modular structure facilitates the quick on-site replacement of the power head and control box, adapting to different working conditions. It is an indispensable standardized operation equipment for railway engineering sections and maintenance units.
High-Precision Measurement
Equipped with an aerospace-grade alloy torque sensor, the instrument achieves industry-leading measurement accuracy and can accurately capture torque variations across the full measuring range. During the re-tightening operation of rail fastener bolts on high-speed railways, it can stably reproduce the preset torque value, effectively avoiding fastener loosening or stress concentration caused by torque deviation, and significantly reducing safety risks in line operation and maintenance.
Adapted to Harsh Railway Environments
The enclosure is die-cast from high-strength aluminum alloy, resistant to gravel abrasion and repeated impacts commonly encountered on railway sites. Specially designed for outdoor railway operations, it maintains stable performance over a wide temperature range and can operate continuously at -20℃~+60℃ and 95% RH. It functions reliably in dark tunnels, high-humidity rainy conditions, and emergency night repairs, fully meeting all scenario railway maintenance requirements.
Visualized Data Recording
Built-in large-capacity memory chip enables storage of multiple sets of inspection data. Torque data can be uploaded in real time to the railway operation and maintenance management platform, with automatic generation of inspection reports.
Light weight & Ergonomic Design
The unit is lightweight and equipped with a non-slip rubber grip and adjustable support feet, allowing one person to complete torque detection for switch machine bolts. For work during night maintenance windows, the high-brightness backlit display enables quick data reading in low-light conditions, reducing operator fatigue.
New Railway Line Construction
Precisely control the torque of rail fastener bolts (including spring bars and clip bolts) to ensure track smoothness and stability.
Perform torque detection on bolts at key components such as switch machines, connecting rods and basic rails, guaranteeing switch operation accuracy and traffic safety.
Existing Line Operation, Maintenance & Overhaul
Re-tighten and inspect the torque of fastener bolts, gauge bar bolts, and anti-creep device bolts along the entire line to eliminate torque attenuation caused by train vibration.
Perform torque detection on key bolts such as cantilever base, steady arm, dropper, and electrical connector clamp to prevent catenary detachment or short-circuit faults.
Will the accuracy be affected when used in alpine regions?
No. The product adopts wide-temperature-range sensors and low-temperature compensation algorithms, and can still maintain a measurement accuracy of ±0.5% FS at -40℃, meeting the operation and maintenance requirements of alpine railways.
What is the recommended calibration interval?
In accordance with railway industry standards, traceable calibration is recommended every 6 months. For daily use, accuracy can be quickly verified via the built-in self-test function to ensure reliable measurement results.
How to handle when data storage is full?
The tester supports automatic overwriting of old data or exporting data to the management platform via Bluetooth/USB. Historical records can also be deleted manually to ensure sufficient data storage space.
The DW-35 Digital Torque Tester is an intelligent torque detection tool specially designed for railway track fastening systems. It is suitable for the precise torque verification of rail fastener bolts in high-speed railways, conventional railways, subways and other scenarios. Equipped with high-precision sensors and a digital display module, the device can provide real-time feedback on the applied torque value to ensure that each bolt meets the designed pre-tightening force standard. Its modular structure facilitates the quick on-site replacement of the power head and control box, adapting to different working conditions. It is an indispensable standardized operation equipment for railway engineering sections and maintenance units.
High-Precision Measurement
Equipped with an aerospace-grade alloy torque sensor, the instrument achieves industry-leading measurement accuracy and can accurately capture torque variations across the full measuring range. During the re-tightening operation of rail fastener bolts on high-speed railways, it can stably reproduce the preset torque value, effectively avoiding fastener loosening or stress concentration caused by torque deviation, and significantly reducing safety risks in line operation and maintenance.
Adapted to Harsh Railway Environments
The enclosure is die-cast from high-strength aluminum alloy, resistant to gravel abrasion and repeated impacts commonly encountered on railway sites. Specially designed for outdoor railway operations, it maintains stable performance over a wide temperature range and can operate continuously at -20℃~+60℃ and 95% RH. It functions reliably in dark tunnels, high-humidity rainy conditions, and emergency night repairs, fully meeting all scenario railway maintenance requirements.
Visualized Data Recording
Built-in large-capacity memory chip enables storage of multiple sets of inspection data. Torque data can be uploaded in real time to the railway operation and maintenance management platform, with automatic generation of inspection reports.
Light weight & Ergonomic Design
The unit is lightweight and equipped with a non-slip rubber grip and adjustable support feet, allowing one person to complete torque detection for switch machine bolts. For work during night maintenance windows, the high-brightness backlit display enables quick data reading in low-light conditions, reducing operator fatigue.
New Railway Line Construction
Precisely control the torque of rail fastener bolts (including spring bars and clip bolts) to ensure track smoothness and stability.
Perform torque detection on bolts at key components such as switch machines, connecting rods and basic rails, guaranteeing switch operation accuracy and traffic safety.
Existing Line Operation, Maintenance & Overhaul
Re-tighten and inspect the torque of fastener bolts, gauge bar bolts, and anti-creep device bolts along the entire line to eliminate torque attenuation caused by train vibration.
Perform torque detection on key bolts such as cantilever base, steady arm, dropper, and electrical connector clamp to prevent catenary detachment or short-circuit faults.
Will the accuracy be affected when used in alpine regions?
No. The product adopts wide-temperature-range sensors and low-temperature compensation algorithms, and can still maintain a measurement accuracy of ±0.5% FS at -40℃, meeting the operation and maintenance requirements of alpine railways.
What is the recommended calibration interval?
In accordance with railway industry standards, traceable calibration is recommended every 6 months. For daily use, accuracy can be quickly verified via the built-in self-test function to ensure reliable measurement results.
How to handle when data storage is full?
The tester supports automatic overwriting of old data or exporting data to the management platform via Bluetooth/USB. Historical records can also be deleted manually to ensure sufficient data storage space.
