Description Overview Machine is designed to test coil spring durability under specific stroke. Technical Specifications Test position: one. Stroke: 50 mm. Speed: 20-90 times per minute. Counter: 0-999,999 times. Weight (wood package): 30 kg. Machine dimension (L x W x H): 260 x 220 x 420 mm. Power: AC220V ±10%, 50/60 Hz, single phase.