The YJPL300 mechanical fatigue testing machine is specifically engineered for professional laboratory testing of automotive leaf springs. Its versatile design supports various assembly configurations, including springs with eyes (one or both ends) and those without eyes.
The equipment offers exceptional processing versatility, accommodating leaf spring widths of 40–120mm, stack thicknesses of 50–350mm, and center distances between eyes ranging from 750 to 2100mm. It handles a maximum arch height of 450mm and eye diameters up to 180mm.
Delivering robust performance, the system provides a maximum static load of 300kN, a frequency range of 1–2Hz, and an amplitude of ±100mm. It is powered by a 55KW inverter-controlled motor, offering a 100kN pre-load capacity with easy adjustment of amplitude and pre-load displacement.
Integrated with high-precision sensing and intelligent control, the machine features load sensors (accuracy ≥0.5%FS) and displacement sensors (0.1mm accuracy). Utilizing a Siemens PLC, the interface displays real-time test data such as amplitude, load, and cycle counts, while supporting automated report generation.
Engineered for maximum durability, the machine features a high-rigidity structure with roller-guided crossheads and an automatic lubrication system. It is designed for continuous 24/7 operation across three daily shifts and includes remote data transmission for real-time office monitoring.

Device Functions
Design and manufacture a fatigue testing machine according to the customer's requirements for conducting fatigue tests on automotive leaf springs in the laboratory.

Equipment composition: One set
One main unit, one electrical control system, etc.

Basic Equipment Requirements
1. Must satisfy the following conditions: ① there is an ear reed, ② there is no ear reed, ③ there is an ear reed on one end and no ear reed on the other end.
2. Leaf spring assembly test fixing method: movable trolley support or fixed trolley support.
3. The amplitude is easy to adjust and easy to measure.
4. Configure load cells, displacement sensors, and display instruments. Load cell accuracy ≥ 5%FS, displacement sensor accuracy 0.1mm.
5. The following information should be displayed on the test interface: test amplitude, frequency, pre-applied deformation, maximum and minimum load values, number of tests, test time, and the number of tests can be set arbitrarily.
6. Equipped with an automatic lubrication system, it automatically lubricates the lubrication points at regular intervals.
7. Leaf spring assembly test fixing method: movable trolley support or fixed trolley support, equipped with a test trolley with an inner width of 110mm (two additional vertical plates are added inside for support, inner width 80mm).
8. After the test is completed, a test report will be automatically generated (the test report format can be specified by the client ).
9. The preload of the leaf spring is easy to adjust and measure.
10. The equipment should have sufficient rigidity, a reasonable structure, and be easy to maintain.
11. The clutch uses a standard clutch, which is easy to replace.
12. The pressure head slider is guided by rollers.
13. The main lubrication points of the equipment are automatically lubricated.
14. This unit is controlled by a PLC system, and the PLC is a Siemens product.
15. The main electrical components are products from Chint Group.
16. Pneumatic components are AIRTAC products;
17. The equipment is capable of continuous operation, allowing for three shifts of production per day;
18. It has remote data transmission capabilities, allowing for real-time monitoring from the office.

Equipment technical data
1. Equipment instruction manual;
2. Equipment layout diagram, foundation diagram;
3. Electrical schematic diagrams and wiring diagrams;
4. Drawings of vulnerable parts.