YJZ-5000E Microcomputer-Controlled Fully Automatic High-Strength Bolt Tester (New Standard)
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Description
Product Introduction:
This test system is designed according to user‑specific testing requirements and is primarily intended for the evaluation of large, high‑strength bolted connections used in wind‑energy equipment. It performs static torsional tests on high‑strength bolts, complying with the provisions of GB 1231‑2024 “Technical Specifications for High‑Strength Large Hexagonal Bolts, Large Hexagonal Nuts, and Washers for Steel Structures” and GBT 32076.8‑2017. The system comprises a mainframe, a testing mechanism, a loading mechanism, an integrated control and data‑acquisition system, a computer with dedicated test software, and various accessories. It is an ideal high‑performance testing solution for industrial and mining enterprises, quality‑inspection agencies, research institutes, and higher‑education institutions. The system is suitable for conducting torsion‑tension mechanical performance tests on high‑strength bolts and large hexagonal bolts, enabling the measurement of bolt‑nut preload parameters such as torque, rotation angle, and axial force. It can also determine the torque coefficient of large‑size, high‑strength bolted joints, while automatically displaying results and storing and outputting test data. The instrument autonomously records test data and, via a microcomputer, calculates key statistical metrics including average axial force, average torque, average torque coefficient, standard deviation, and coefficient of variation. Furthermore, it generates technical indicators such as the relationships among torque coefficient, torque–axial force, and rotation angle, and produces corresponding curves depicting torque–axial force–torque coefficient correlations.
Technical Specifications:
| Parameter Category | Parameter content |
| Maximum torque | 5000Nm |
| Effective torque measurement range | 50–5000 Nm |
| Maximum rotational speed | 1r/min |
| Torque tolerance and repeatability error | ≤±1% |
| Maximum axial bolt force | 800kN |
| Effective measurement range of bolt axial force | 30-800kN |
| Compatible bolt specifications | Hexagonal bolt M12/M16/M20/M22/M24/M27/M30/M33/M36 |
| Bolt length range | 50-350mm |
| Axial force tolerance and repeatability error | ≤±1% |
| Power supply voltage | AC 220±10% 50Hz |
| Security Protection Feature | Equipped with protection functions such as overload and specimen fracture detection. |
| Data display method | The computer screen displays the experimental parameter values and the corresponding test curves in real time. |
Main configuration:
| Serial number | Project | Quantity | Note | |
| 1 | Host | Workbench, frame | 1 set | |
| Torsion testing apparatus | 1 set | |||
| Axial Bolt Axial Force Testing Device | 1 set | |||
| 2 | Test fixture | 1 set | ||
| 3 | Load speed control system | 1 set | ||
| 4 | High-precision symmetric torque sensor | 1 piece | ||
| 5 | High-precision bolt axial force sensor | 1 piece | ||
| 6 | Low-speed, high-torque reducer | 1 unit | ||
| 7 | Control system | 1 set | ||
| 8 | Electrical Control and Data Acquisition System | 1 set | ||
| 9 | Software | 1 set | ||
| 10 | Computer | 1 unit | ||
| 12 | Linear guide rail | 1 set | ||
| 13 | Bolt torsion attachment | 1 set | ||
| 14 | Protective cover | 1 set | ||
| 15 | Random Data | 1 set | Instruction manual, certificate of conformity, packing list | |
| 16 | Special attachment for large hexagon bolts | 1 set | Test fixtures for M12/M16/M20/M22/M24/M27/M30/M33/M36 | |
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YJZ-5000E Microcomputer-Controlled Fully Automatic High-Strength Bolt Tester (New Standard)
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