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
 |
UV-master Ultraviolet Aging Test Chamber | Get a quote： Whats/App: +86 181 0160 0864 The UV-master Ultraviolet Aging Test Chamber is a high-performance testing device specifically designed... |
 |
Plastic Scratch Test machine | Get a quote： Whats/App: +86 181 0160 0864 Web: gellowen.co.uk The Plastic Scratch Test Machine is a precision testing instrument designed to eva... |
 |
Double Plate Thermal Conductivity Apparatus | Get a quote： Whats/App: +86 181 0160 0864 Web: gellowen.co.uk The double plate thermal conductivity tester, with an integrated water bath thermo... |
 |
Gas Turbine Filter Test System | Get a quote： Whats/App: +86 181 0160 0864 Web: gellowen.co.uk Test System for testing air intake filter systems for rotary machinery (ISO 29461)... |
 |
A Bottle Cap Torque Tester | A Bottle Cap Torque Tester is a specialized device used to measure the torque applied to bottle caps during sealing or opening processes. Its prima... |
Same products
 |
MMA-120 Handheld Arc Welder | Seller: 871183 | The MMA-120 Handheld Arc Welder from ChuangLi Electronic Technology Co., Ltd. is designed for con... |
 |
SHX Series Circulating Fluidized Bed Steam Boiler | Seller: Hebei Genjux Boiler Co.,Ltd | Capacity: 10-35 t/hWorking pressure: 1.25-2.5 MPaOperating temperature: 194-400 ℃Applicable to bi... |
 |
YQ(Y)W Series Oil/Gas Fired Vertical Thermal Oil Boiler | Seller: Hebei Genjux Boiler Co.,Ltd | Capacity: 7000-29200 KWOperating pressure: 0.8-1.0 MPaOperating temperature: 320℃Operating mode: ... |
 |
DHL Series Coal-Fired Steam Boilers | Seller: Hebei Genjux Boiler Co.,Ltd | Capacity: 35-75 t/hOperating pressure: 1.25-5.4 MPaOperating temperature: 194-485℃Applicable to b... |
 |
SZL Series Biomass Steam Boiler | Seller: Hebei Genjux Boiler Co.,Ltd | Capacity: 6-35 t/hWorking pressure: 1.0-2.5 MPaOperating temperature: 184-350 ℃Applicable fuel bi... |
