Spinal Pedicle Screw-Rod System Torsional Fatigue Testing Machine
Get a quote：
Whats/App: +86 181 0160 0864
Web: gellowen.co.uk
The Spinal Pedicle Screw-Rod System Torsional Fatigue Testing Machine is a specialized device used to evaluate the torsional fatigue performance of spinal implant systems, specifically pedicle screws and connecting rods.
Standards
YY/T 0857. YY/T 1560. ASTM F1717. ASTM F2706
These standards define the materials and methods for static and fatigue testing of spinal implants in vertebral resection models, including cervical and cervicothoracic implant assemblies. Fatigue tests are performed at a frequency of 5 Hz, R = -1. for 5 million cycles or until specimen failure.
Application
The Spinal Pedicle Screw-Rod System Torsional Fatigue Testing Machine is used to evaluate the mechanical durability and torsional fatigue performance of spinal fixation systems under repeated rotational loads. Typical applications include:
Orthopedic implant testing: Assess torsional strength and fatigue life of pedicle screw-rod constructs.
Quality control: Verify consistency and mechanical reliability of manufactured spinal fixation systems.
Research and development: Support design optimization and material selection for spinal implants.
Standards compliance: Conduct tests according to ISO 12189. ASTM F1717. and other international spinal implant testing guidelines.
This machine ensures spinal fixation devices can withstand cyclic torsional loads in vivo, reducing the risk of implant loosening or failure.
Product Features
Equipped with an imported torque motor, providing high servo precision and seamless integration of axial and torsional actuation, delivering up to 5 kN axial load and 20 N·m torque, suitable for various material tests.
Hydraulic assist system allows easy crossbeam lifting, locking, and specimen clamping, making test operations efficient and convenient.
High-precision imported torsion sensors combined with zero-backlash ball screws achieve load and torque measurement accuracy of ±0.5% of reading or ±0.05% of full scale (whichever is better).
Supports single-axis tension/compression, pure torsion, and combined tension-torsion control modes, enabling tensile, compressive, bending, shear, creep, and relaxation tests.
Technical Specifications
| Parameter Category | Parameter | Specification |
|---|---|---|
| Axial | Maximum load peak | 4000 N |
| Dynamic load peak | 4000 N | |
| Static load peak | 2100 N | |
| Load measurement range | 0.4%–100% F.S. | |
| Load measurement accuracy | ±0.2% of reading | |
| Maximum loading frequency | 2 Hz | |
| Axial stroke | 70 mm | |
| Displacement resolution | 0.1 μm | |
| Torsion | Maximum dynamic torque | 30 N·m |
| Torque measurement range | 0.4%–100% F.S. | |
| Torque measurement accuracy | ±0.2% of reading | |
| Maximum torsional loading frequency | 10 Hz | |
| Rotation angle range | unlimited | |
| Maximum rotational speed | 150 r/min | |
| Angular resolution | 0.018° | |
| General | Test space (vertical clamp distance) | 0–950 mm |
| Net weight | ~600 kg | |
| Dimensions | ~1170 × 700 × 2650 mm | |
| Optional Fixtures | Spinal rod/screw torsion fixtures, fusion device torsion fixtures, orthopedic screw tension-torsion fixtures, tapered fit strength test fixtures, femoral head torsion fixtures, etc. | |
| Applications | Dynamic and static torsion testing of surgical implants (e.g., intervertebral fusion devices), combined tension-torsion tests, single-axis tension/compression tests. |
Send product request
Other supplier products
 |
Safety Helmet Impact Acceleration Tester | Get a quote： Whats/App: +86 181 0160 0864 Web: gellowen.co.uk The safety helmet impact acceleration tester is an instrument used to test the per... |
 |
Image test standard transmission light box ISO 3664 | Standard CIE 15:2004: Adheres to colorimetry standards for spectral measurement. ISO 3664:2009: Compliant with viewing conditions for graphic art... |
 |
Steiner Tunnel Test Furnace | Get a quote： Whats/App: +86 181 0160 0864 Web: gellowen.co.uk The ASTM E84 Building Materials Flame Spread Test Apparatus is designed to evaluat... |
 |
Internal shoe size tester | In-side Shoe Gauge Measurement Tool | Product Introduction While external shoe size markings provide a general guide, the actual space inside a shoe dictates how it will fit a foot. Th... |
 |
Solid Energetic Materials Stability Tester | Get a quote： Whats/App: +86 181 0160 0864 Web: gellowen.co.uk The Solid Energetic Materials Stability Tester monitors the changes in gas pressur... |
Same products
 |
Common Rail Injector Valve F00R J02 012 | Seller: 868983 | Common Rail Injector Valve F00R J02 012 David Chen |
 |
Common Rail Injector Valve F00R J02 005 | Seller: 868983 | Common Rail Injector Valve F00R J02 005 David Chen |
 |
Common Rail Injector Valve F00R J01 945 | Seller: 868983 | Common Rail Injector Valve F00R J01 945 David Chen |
 |
Common Rail Injector Valve F00R J01 941 | Seller: 868983 | Common Rail Injector Valve F00R J01 941 David Chen |
 |
Common Rail Injector Valve F00R J01 924 | Seller: 868983 | Common Rail Injector Valve F00R J01 924 David Chen |
