Xi'an LETRY specializes in manufacturing dynamic torsion fatigue testing machines. These are primarily used for static torsion strength and dynamic torsion fatigue testing of metal materials, composite materials, and their components. The loading part is driven by a servo torsion pendulum actuator, which is rigidly connected to the specimen for easy installation and replacement. The output end is rigidly fixed. The system includes protective functions such as overload and specimen fracture protection.

I. Technical Parameters:

1. Model: NJ-2000

2. Maximum Dynamic Test Torque: ±2000Nm

3. Static Torque Indication Error: ≤±0.5%

4. Dynamic Torque Indication Error: ≤±1.0%

5. Angle Control Error: ≤±0.5%

6. Test Frequency Range: 0.1～50Hz

7. Test Waveforms: Triangular wave, square wave, ramp wave, and user-defined combined waves available

8. Control System: Full digital hydraulic servo controller

9. Control Methods: Torque and angle full digital PID closed-loop control, with smooth and disturbance-free switching between control modes

10. Torsion Angle Range: ±45°

11. Adjustable Test Space: 0～1000mm

12. Hydraulic Source: Pressure 21MPa, Flow 63L/min

13. Host Machine Dimensions (L x W x H): 2000x600x920mm

14. Control Cabinet Dimensions (L x W x H): 600x600x1600mm

15. Hydraulic Pump Station Dimensions (L x W x H): 1300x900x1250mm

II. Safety Protection:

Equipped with overcurrent protection, grounding protection, overheating protection, etc.; the testing machine includes angle limit protection; automatic protection when exceeding 10% of the maximum torque; separately configured remote and local manual emergency stop devices to quickly cut off power in emergencies.

This testing system uses an imported servo torsion actuator for torsion loading. The equipment features a horizontal box-type design, conforming to ergonomic principles with an appropriate height for convenient operation. The fixed clamp moves easily along the linear guide with the slide system, offering an aesthetically pleasing appearance, reliable performance, and simple operation.