The striking elements are the core components in the IK mechanical impact tests , the striking element shall be release from a height specified in table 2 of IEC60068-2-75, the corresponding impact energy will be generated. The striking elements and pendulum arm can compose to pendulum hammers ; the striking elements and release system can compose to spring hammers ; the striking elements fall freely from a vertical height, that is vertical hammers . Items IK00 IK01~IK05 IK06 IK07 IK08 IK09 IK10 IK11 E nergy in joules * ＜ 1 1 2 5 10 20 50J R in mm * 10 10 25 25 50 50 50 Material * P olyamide S teel Mass in kg * 0.2 0.5 0.5 1.7 5 5 10 D in mm * 20 25 35 60 80 100 125 f in mm * 10 4 7 10 20 20 25 r in mm * - 2.5 - 6 - 10 17 I in mm * 57.5 120 60 65 110 63 125 P endulum hammer * Y es Y es Y es Y es Y es Y es Y es S pring hammer * Y es Y es Y es N o N o N o No F ree-fall hammer * no no Y es yes Y es Y es Y es Height of fall 0.4m 0.3 m 0.2m 0.4m 0.5m *No Protection The strikin...