2 Introduction This machine is used to test the extension and contraction life of various spring wires such as Handset wires. It is continuously and repeatedly stretched by pneumatic power during power on to check the damaged parts and extension and contraction times. After power off, the station stops for counting. 3 Main technical parameters 3.1. Capacity: 50kg 3.2. Unit switching: kg, N, LB 3.3. Load decomposition degree: 1/250,00 3.4. Load accuracy: 0.25% 3.5. Maximum stroke: 1500mm (including fixture) 3.6. Test speed: 30-300 mm/S 3.7. Displacement resolution: 0.01 mm 3.8. Display device: LCD display screen (capable of displaying the number of tests per workstation) 3.9. Driving method: precision rodless cylinder 3.10. Overall dimensions (L * W * H): approximately 550 * 360 * 2090mm 3.11. Weight: 50kg 3.12. Power supply: 1 , 220V, 15A or specified