Overview
Springs are precision mechanical components that must survive millions of load cycles in real-world service. From automotive suspension and shock absorbers to valve springs, disc springs and torsion springs, a spring that fails in fatigue can cause costly downtime or serious safety incidents. That is why fatigue and torsion testing is an essential quality step for spring manufacturers, automotive suppliers and engineering laboratories.
CHENJI offers a complete range of spring fatigue and torsion testing machines covering static and dynamic testing needs. Our machines can evaluate spring force attenuation, fatigue life, static torque, torsion angle and stiffness — delivering the reliable data you need to validate product design and production quality. Every machine is designed, processed and assembled in-house, with strict quality control and factory-direct pricing.
Product Range
TPJ-20 Mechanical Dynamic Spring Fatigue Testing Machine — A touchscreen-controlled fatigue tester for helical springs and cylindrical shock absorbers on automobiles, motorcycles and other motor vehicles. It offers a maximum test force of 20,000 N (20 kN) with two simultaneous test stations (10,000 N per station), a test frequency of 1-5 Hz and a maximum stroke of 100 mm. A force sensor monitors spring force in real time and stops the machine automatically when force attenuates below the set value. View details
Mechanical Type Spring Fatigue Tester (10 kN / 20 kN / 25 kN / 30 kN) — A static-dynamic spring fatigue tester covering 10 kN to 30 kN capacities for compression and tensile fatigue of springs. View details
TNS-S2000 Automatic Spring Torsion Testing Machine — A touchscreen-controlled spring torsion tester designed for springs requiring large-angle, high-frequency durability fatigue testing. It can test static torque, torsion angle and stiffness, and can be adapted for other elastic components by changing the fixtures. View details
10-100 N·m Horizontal Torsion Spring Tester (TNS-W100P) — A microcomputer-controlled torsional fatigue tester that integrates static and dynamic testing. With a torque range up to 100 N·m, a horizontal structure and a Panasonic AC servo drive, it meets the torsional and fatigue testing needs of springs, torsion bars and other specimens. View details
2000 N·mm Spring Torsion Tester — A touch-screen-controlled spring torsion fatigue testing machine for smaller spring torsion applications. View details
Test Types
- Fatigue testing — dynamic compression and tensile cycling to evaluate fatigue life, force attenuation and automatic shutdown at failure.
- Torsion testing — static torque, torsion angle and stiffness measurement for torsion springs and elastic components.
- Tension / compression (load) testing — load and deflection evaluation for spring quality sorting.
Frequently Asked Questions
How do you run a spring fatigue test?
Set the test frequency (for example from 1-5 Hz on the TPJ-20), the required number of test cycles and your acceptable force range, then start the machine. The system runs automatically and stops when the target cycle count is reached or when spring force attenuates below the set threshold, recording the number of completed cycles.
How do I choose the right spring testing capacity?
Match the machine’s maximum test force to the highest load your spring experiences in service. For example, the TPJ-20 offers up to 20 kN with two stations sharing 10 kN each, while the mechanical type covers 10 kN to 30 kN — select based on your spring’s working load and test space requirements.
Can you test torsion springs as well as compression springs?
Yes. The TNS-S2000 and the 10-100 N·m horizontal torsion tester (TNS-W100P) measure static torque, torsion angle and stiffness, and different fixtures let you adapt them to other elastic components.
What spring applications do these machines cover?
They are widely used for automotive suspension springs, cylindrical shock absorbers, valve springs and other helical springs on automobiles, motorcycles and motor vehicles, as well as torsion bars and similar elastic components.
Does the machine stop automatically if a spring breaks?
Yes. On TPJ-20 systems, the machine automatically stops if the shock absorber or test specimen fails during the test and records the number of stops, allowing you to restart sequential testing.
Need a Spring Testing Machine?
Contact CHENJI for the full catalog, custom specifications and factory prices.
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