Shock Absorber Fatigue Testing Machine

Servo dynamic test bench for shock absorber durability, used for long-cycle fatigue life and performance attenuation verification

Product Overview

This shock absorber fatigue testing machine adopts servo reciprocating driving system. It performs continuous cyclic loading on automotive, motorcycle and engineering hydraulic shock absorbers, simulating the repeated vibration load on roads. It is used to evaluate fatigue life, damping attenuation, oil leakage, loose connection and structural failure after long-time operation. The equipment can run preset cycle counts automatically, monitor force and displacement changes in real time during the test, and stop automatically when abnormal conditions occur. Multi-station fixture layout is optional to improve testing efficiency. It is widely applied in new product development, durability verification and batch quality audit for shock absorber manufacturers and professional testing laboratories.

Applicable International Standards

The system is designed to comply with the following recognized testing standards:

ISO 3016 — Road vehicles — Shock absorbers — Test methods
SAE J1367 — Suspension Component Fatigue Test Procedure
SAE J1490 — Damper Performance and Durability Test Methods
ASTM E3077 — Standard Practice for Fatigue Testing of Components

Note: Specific compliance depends on model configuration, force sensor selection and customized fixture design. Customized fixtures and test schemes for extra testing standards are available upon request.

Key Features

Stable servo reciprocating drive — Sine waveform cyclic loading, stable amplitude and frequency for long-time continuous fatigue test.
Optional force range — 0.1 ~ 50 kN, multiple sensor options, and can be configured according to customer test requirements, replaceable sensors for different dampers.
Flexible parameter setting — Adjustable stroke, frequency and test cycles to match different durability specifications.
Abnormal automatic monitoring — Real-time tracking of force change, automatic alarm and shutdown for overload, over-travel and damping drift.
Optional multi-station structure — 2-station, 4-station layout for simultaneous testing of multiple samples.
Continuous cycle counting — Large cycle counter supports millions of fatigue cycles.
Professional test software — Record test data, store historical curves and export durability test reports.
Complete safety protection — Over-force, over-stroke, power-off protection and emergency stop function.

Technical Specifications

Parameter	Specification
Test Mode	Reciprocating fatigue test, durability cycle test, performance degradation monitoring
Force Range	0.1 ~ 50 kN, multiple sensor options, customized according to test requirements
Force Accuracy	±0.5% of indicated value
Stroke Range	0 ~ ±150 mm (Customizable)
Frequency Range	0.1 ~ 10 Hz
Displacement Resolution	0.001 mm
Specimen Type	Automotive shock absorber, motorcycle damper, engineering machinery hydraulic shock absorber
Station Quantity	1 / 2 / 4 stations (Optional, customized)
Output Data	Force, displacement, frequency, cumulative cycles, force change curve
Power Supply	AC 380 V / 50 Hz (depends on configuration)

Specifications vary by model configuration, force sensor selection and customized fixture. Special stroke and multi-station layout can be customized according to damper fatigue test requirements.

Typical Applications

Automotive shock absorber factory — Long cycle durability fatigue test for passenger car and commercial vehicle dampers.
Motorcycle & electric vehicle industry — Fatigue life verification for two-wheeler front and rear shock absorbers.
Engineering machinery sector — Durability assessment of hydraulic dampers for construction and agricultural equipment.
Parts R&D laboratory — Evaluate damping attenuation, oil leakage risk and structural reliability after repeated vibration.
Third-party testing institutions — Standard fatigue durability test and certification service for shock absorber products.