Compression Springs - SELECTION ASSISTANT
Manufactured to DIN ISO 10243, the springs are available in four grades for high cyclic and constant loads. The specially rolled wire profile is manufactured from high quality heat treated alloy steel.
We manufacture and supply special spiral compression springs, steel springs and spring elements for punching and metal forming technologies as well as diaphragm springs and spring shape elements.
The spring type used depends on the individual requirements. We have four load groups that can be used in either tool manufacture, engineering or in the construction of jigs and fixtures.
The permissible value of the shear stress and the spring oscillating stress differential depends on the spring material used. FIBRO special spiral compression springs are manufactured from 50CrV4. The specially milled profile allows a high level of alternating and continuous loads and is ready for operations at working temperatures of up to 250°C.
The achievable service life of helical compression springs depends to a large extent on the composition of the spring wire, the operating conditions, and on design parameters. In all applications with oscillating spring displacement, careful selection of both preload values and compressive displacement are prerequisites for extended spring life, as confirmed by the permissible stress values in the loading data tables and the stress/spring life diagram.
Shear stress maxima and spring oscillation stress differentials are a direct function of the quality of the spring wire. FIBRO High Performance Compression Springs are made exclusively from special alloyed chrome-steel.
For extended spring life under oscillating load changes, the maximal shear stress τzul. is 800 N/mm², of which some 400 N/mm² = (τh). Higher stress levels are permissible only under the proviso of limited life expectancy, or in cases of static and quasi-static load conditions.
Springs subjected to dynamic load conditions also suffer impairment to their life expectancy through influences such as extreme operating temperatures, transversal stress components, shock loads, and resonant vibration frequencies. In all these instances, a lowering of the stress levels assists towards better spring life