In-production determination of the maximum number of cycles to failure (service life) of highly stressed springs for the automotive sector was a core requirement for the new testing machine at Scherdel. The HC 25 Compact servo-hydraulic testing machine with temperature chamber will enable spring assemblies with different dimensions to be tested in future at a frequency of up to 20 Hz at 2E5 cycles The spring assemblies in question consist of up to 56 individual springs. After completion of the test a check is made to see if all springs are still intact. The tests are carried out on a defined number of components per batch as part of the quality assurance process.
The HC Compact (Fmax 25 kN) is a complete testing system, with an extremely small space requirement, the low-noise power-pack acting as a support base for the test frame. With a testing actuator mounted in the upper crosshead and a hard-chromed T-slotted platform, this testing machine is suitable for static and dynamic tests of all types up to 25 kN.. The built-in temperature chamber enables testing in a temperature range from -70 °C to + 250 °C.