1. Exceeding the maximum compression amount will generate high-efficiency stress and cause the tension spring to break;

2. The mandrel is too small or the tension spring is placed horizontally, causing the tension spring and mandrel to wear and break;

3. When the mandrel is too small/the assembly surface is uneven/the parallelism of the positioning surfaces at both ends is poor, the spring will be compressed and twisted, and high pressure will be generated locally, causing it to break.

4. Overburning, rusting, excessive hardness, and excessive rolling of the tension spring will reduce its tensile and compressive strength and cause it to break.

5. Foreign matter is mixed between the coils of the tension spring, which reduces the actual number of effective coils, thereby generating high stress and causing it to break;

6. The tension springs are used in series to bend and exceed the length of the mandrel or countersunk hole, or because of the slight difference in the tension springs themselves, the weaker load spring is subjected to a larger compression and breaks;

7. The mandrel is too short and the end is not chamfered, which will cause the tension spring to break due to friction and wear between the mandrel and the mandrel;

8. The tension spring material is uneven, or the impurity content exceeds the standard, resulting in stress concentration and fracture;

Kunshan Sakli Hardware & Plastic Co., Ltd. was established in 2005. It is a comprehensive precision spring/stamping spring manufacturer integrating R&D, production, sales and service. The company's main products: compression springs, automotive springs, torsion springs, tension springs, power tool springs, antenna springs, constant force springs, etc. For more than ten years, the company has adhered to the service concept of "people-oriented, scientific and technological production" with high-quality products. It has a professional technical management team with many years of experience and is equipped with a number of advanced foreign production equipment and testing instruments to create satisfactory value for customers and help customers succeed. Sakli is committed to creating a stage for strivers to display their talents. We are people-oriented and regard talents as important strategic resources and precious wealth of the company. Through respect, training, motivation and help, we encourage progress, stimulate creativity, and share the fruits of success. Sakli adheres to the values ​​of customer-oriented, trust, unity, respect, principles, self-examination, and obedience, and pursues healthy, stable and sustainable operations. Relying on high-quality products, our products cover the whole country and are exported to foreign countries, and establish long-term cooperative relationships with customers.