Before using the machine,in the sole test of maximum bending position,with certain specified holes,then to fix the both ends of the sole with the clamps.One  clamp is fixed,one is movable. During testing,the circular shaft in the middle of the jig is raised repeatedly, to bend the sole, bend a certain number of times, with a magnifying glass to examine the extent of resistance to stretch soles. With power failure memory function.
1,bending angle:90°±1°
2.circular shaft diameter：Ф30mm
3.bending speed：0-150/min（adjustable）
4.clamp width：144mm
5.simultaneous test：3 soles
6.counter：LCD0~999,999
7.horsepower：AC frequency conversion motor
8.volume：100*45*45cm
9.weight：100kg
10.power： AC220V 50HZ