Product Description: 1, the main purposes: mainly used in all kinds of springs, shock absorbers, bellows elastic element fatigue performance tests. According to the technical requirements of the specimen, adjust the amplitude and frequency, preset number of trials automatic shutdown, automatic shut-down function of the specimen fracture. Features: (1) according to the technical requirements of the spring can be free to adjust the amplitude and frequency of the spring. (2) a preset number of tests automatically shut down. (3) The operation is simple, reliable and stable. 3, the main technical indicators: Product Model Technical parameters TPJ-1 TPJ-2 maximum static test force (N) 1000 2000 Frequency 0.5 to 5 Hz adjustable amplitude adjustable from 0 to 25 mm the counter capacity 9 109 trials spring diameter range the Ф0.5 mm Ф30 mm test spring free length of 1 mm to 100 mm 220 VAC, 50 Hz power supply voltage Contact: 4000531334 Mobile: 15098932921 Fax 0531 -87,163,432 Website: www.jnjsf17.com