This machine is produced in Wintime Machinery Co., Ltd. It can test a variety of heavy duty springs such as locomotive springs、car springs or leaf springs. This testing machine mainly use computer and software to control the whole system, which can make the accuracy more precise. The hydraulic cylinder is imported from Germany, which is high flow, good circularity and high availability. This machine can be used to test the heavy duty springs of haulage motor. This machine can adopt the electro-hydraulic servo testing system to operate. The all parts of equipment can be maintained and repaired. The main functions of this machine is as follows, it can use fixed deformation or fixed load. Measurement system can be automatic zero, automatic calibration. Computer real-time display test amplitude, test frequency, the number of fatigue. The load capacity is up to 500KN, and the test space is about 600mm(wide)* 1700mm(length), which can be adjust up and down. The max.test amplitude is ±40mm, and the frequency is about 0.1Hz to 4Hz. The maximum power should be 380 v AC,110 KW. This machine can match different kinds of heavy duty springs such as locomotive springs、car springs or leaf springs.