Hengyi HY(NJ)-1000 N·m Bolt and Fastener Torsion Testing Machine
| Brand | Hengyi / Hengyitest |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | HY(NJ)-1000 N·m TYU |
| Max Torque | 2000 N·m |
| Torque Measurement Range | 2–2000 N·m |
| Torque Resolution | 1/500,000 |
| Torsion Angle Measurement Range | 0–100,000° (or continuous) |
| Motor Power | 3 kW |
Overview
The Hengyi HY(NJ)-1000 N·m Bolt and Fastener Torsion Testing Machine is a high-precision, horizontally configured, floor-mounted mechanical testing system engineered for the quantitative evaluation of torsional mechanical behavior in threaded fasteners—including high-strength bolts, nuts, washers, and anchor assemblies. It operates on the principle of controlled angular displacement under applied torque, enabling simultaneous measurement of axial preload force and rotational moment to determine critical fastener performance parameters such as torque coefficient (K-value), yield torque, ultimate breakaway torque, proof load, and torsional stiffness. Designed in strict compliance with international mechanical testing standards—including ISO 898-1, ASTM F606, and EN 14399—the system delivers traceable, repeatable, and auditable test data essential for structural integrity validation in safety-critical applications.
Key Features
- Robust horizontal frame architecture with reinforced steel base and high-rigidity load train, minimizing deflection during high-torque (up to 2000 N·m) dynamic loading.
- Imported high-accuracy torque transducer and rotary encoder pair, achieving ±0.5% torque measurement uncertainty and ±0.5% angular position repeatability—exceeding the ±1% requirement stipulated in GB/T 16823.3–2010 and ISO 16047.
- Dual-sensor synchronized acquisition: simultaneous real-time capture of axial force (2–200 kN range) and torsional moment (2–2000 N·m), enabling full K-factor derivation per ISO 16047 Annex A.
- High-resolution torque resolution of 1 part in 500,000 full scale, supporting precise detection of micro-slip events and elastic-plastic transition points.
- Programmable torsion speed control from 0.1°/min to 1000°/min, with closed-loop velocity regulation accuracy better than ±0.5%.
- Adjustable jaw spacing (1000 mm standard) and modular gripping system accommodating M10–M27 thread diameters; custom fixtures available for non-standard fastener geometries.
- Integrated 3 kW servo-motor drive delivering stable low-speed torque fidelity and rapid acceleration response without thermal drift.
Sample Compatibility & Compliance
The HY(NJ)-1000 is validated for testing structural bolting assemblies per GB/T 1231–2006 (high-strength hex bolts for steel structures), GB/T 3098.1–2013 (mechanical properties of bolts), and ISO 898-1:2013 (property classes 8.8 through 12.9). It supports both static and quasi-static torsion protocols required by wind turbine tower bolting specifications (IEC 61400-1), transmission tower fastener certification (DL/T 1236–2013), and offshore platform anchoring QA/QC workflows. All hardware and firmware comply with electromagnetic compatibility (EMC) directives IEC 61326-1 and safety standard GB/T 2611–2007. System calibration certificates are traceable to CNAS-accredited national metrology institutes.
Software & Data Management
Controlled via the proprietary HYtest v4.2 test management platform, the system provides ISO/IEC 17025-aligned data governance features including user-level access control, electronic signature support, audit trail logging (per FDA 21 CFR Part 11 requirements), and automatic report generation in PDF/Excel formats. Real-time plotting includes dual-axis curves: torque vs. angle, axial force vs. angle, torque vs. axial force, and time-synchronized parameter overlays. Raw data export supports post-processing in MATLAB, Python (Pandas), or third-party statistical analysis tools. Software includes preloaded test templates aligned with GB/T 16823.3–2010 Annex B and ISO 16047 Clause 7.
Applications
- Verification of torque-tension relationship and K-factor consistency in high-strength bolt batches for wind turbine nacelle and tower assembly.
- Qualification testing of anchor bolts used in bridge expansion joints and seismic retrofitting systems.
- R&D validation of lubricant formulations and surface treatments (e.g., zinc flake, Geomet®) affecting frictional torque distribution.
- Production line QA for photovoltaic mounting structures, where bolt preload scatter directly impacts long-term racking fatigue life.
- Calibration reference for field torque wrenches and electronic tightening tools in aerospace MRO facilities.
- Academic research on thread engagement mechanics, stress relaxation under torsion, and coupled thermo-mechanical degradation in stainless steel fasteners.
FAQ
What standards does this machine directly support for torque coefficient testing?
It fully implements GB/T 16823.3–2010, ISO 16047:2005, and ASTM F1043–22 for K-value determination, including mandatory preload ramping profiles and angular displacement thresholds.
Can the system perform combined tension-torsion fatigue testing?
No—it is optimized for quasi-static torsion and monotonic torque-to-failure tests. For cyclic torsional fatigue, consult the HY(F)-series dedicated torsion-fatigue platforms.
Is third-party calibration documentation included with delivery?
Yes—each unit ships with a factory calibration certificate traceable to NIM (National Institute of Metrology, China), plus optional CNAS-accredited calibration upon request.
What is the maximum specimen length accommodated without modification?
Standard jaw center distance is 1000 mm; extended configurations up to 1500 mm are available as OEM options.
Does the software support multi-language UI and automated report localization?
HYtest v4.2 supports English, Spanish, German, and simplified Chinese interfaces, with report templates customizable for regional regulatory formatting (e.g., CE DoC, UL listing annexes).
