Hengyi HY(NJ)-2000N·m Bolt Torque Coefficient Testing Machine
| Brand | Hengyi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | HY(NJ)-2000N·mHYJ |
| Max Torque | 2000 N·m |
| Torque Measurement Range | 2–2000 N·m |
| Torque Resolution | 1/500000 |
| Torsion Angle Measurement Range | 0–100000° |
| Motor Power | 3 kW |
Overview
The Hengyi HY(NJ)-2000N·m Bolt Torque Coefficient Testing Machine is a high-precision, horizontally configured torsion testing system engineered for the quantitative evaluation of mechanical behavior in high-strength fasteners—particularly structural bolts used in critical load-bearing applications. Operating on the principle of controlled quasi-static torsional loading combined with simultaneous axial force measurement, this machine enables full characterization of torque-tension relationships under standardized test conditions. It complies with internationally referenced mechanical testing standards including GB/T 16823.3–2010 (equivalent to ISO 16047), GB/T 1231–2006, and GB/T 2611–2007, making it suitable for laboratories requiring traceable, auditable, and repeatable data generation in accordance with GLP and pre-production quality assurance protocols.
Key Features
- Robust horizontal落地-style frame construction with high rigidity (mass: ~2200 kg), minimizing deflection during high-torque application up to 2000 N·m
- Dual-sensor architecture: precision torque transducer (±0.5% actual accuracy, 1/500000 resolution) and calibrated axial load cell (range: 5–500 kN, depending on configuration)
- Integrated servo-motor drive system (3 kW, speed range: 0–1000°/min) with closed-loop angular position control and ±0.5% speed accuracy
- Modular jaw design accommodating threaded fasteners from M10 to M27; custom fixtures available for non-standard geometries
- Fixed gauge length of 1000 mm between clamping heads, optimized for ASTM F1940-compliant preload assessment and coefficient of friction (K-factor) derivation
- Real-time synchronized acquisition of torque, axial force, rotation angle, and time — supporting dynamic curve generation: torque vs. angle, axial force vs. angle, torque vs. axial force, and time-series plots
Sample Compatibility & Compliance
This system is validated for testing high-strength hexagon bolts and nuts per ISO 898-1, ASTM A325/A490, EN 14399, and GB/T 1231 specifications. It supports both “nut-rotation” and “bolt-rotation” test modes, enabling determination of K-value (torque coefficient), yield torque, ultimate breakaway torque, proof load, and torsional yield strength. All measurement subsystems are factory-calibrated against national metrological standards (CNAS-accredited traceability). The machine meets electromagnetic compatibility (EMC) requirements per GB/T 18268.1 and safety standards per GB 5226.1. Its mechanical architecture satisfies structural integrity criteria defined in GB/T 2611–2007 for general-purpose testing machines.
Software & Data Management
The HYtest control and analysis software provides ISO/IEC 17025-aligned operation: user-level access control, electronic signature support, audit trail logging (including parameter changes, calibration events, and test run metadata), and automatic report generation compliant with ISO/IEC 17025 Clause 7.8. Raw data export is supported in CSV, Excel, and XML formats; all curves conform to ASTM E2921 digital data recording guidelines. Optional 21 CFR Part 11 compliance package includes role-based permissions, biometric or PKI-based e-signature integration, and immutable archival of raw channel data with hash verification.
Applications
- Quality assurance in wind turbine tower assembly, where bolted joint integrity directly impacts structural safety and fatigue life
- R&D validation of lubricant formulations for aerospace and rail fastening systems
- Third-party certification testing for photovoltaic mounting structures and transmission tower hardware
- Production line verification of batch-to-batch consistency in high-tensile fastener manufacturing
- Academic research on thread friction mechanics, material strain hardening under torsion, and preload relaxation kinetics
- Calibration laboratory services supporting ISO/IEC 17025 accreditation for torque measurement
FAQ
What standards does this machine directly support?
It implements test methods defined in GB/T 16823.3–2010 (ISO 16047), GB/T 1231–2006, GB/T 2611–2007, and aligns with ASTM F1940 and ISO 898-1 mechanical property verification protocols.
Can the system measure both torque and axial force simultaneously?
Yes — dual-channel synchronized acquisition captures torque, axial force, angular displacement, and time at ≥1 kHz sampling rate, enabling real-time K-factor calculation and joint stiffness analysis.
Is remote diagnostics or firmware update capability available?
The HYtest software supports secure remote maintenance via encrypted TLS tunneling; firmware updates are delivered as digitally signed packages with version rollback functionality.
What is the typical lead time for custom jaw configurations?
Standard M10–M27 jaws ship with the base system; bespoke fixtures (e.g., for anchor bolts or non-hex geometries) require 4–6 weeks after dimensional approval.
Does the system include calibration documentation?
Each unit ships with a factory calibration certificate traceable to NIM (National Institute of Metrology, China), including uncertainty budgets for torque (k=2, U = 0.42%) and axial load (k=2, U = 0.38%).
