1.
Impact energy: 0.196J
2.
Rebound hammer impact length: 75±0.3mm
3.
Needle friction force: 0.5±0.1N
4.
Spheric radius of elastic stem: 25±1mm
5.
Stiffness of elastic pullback spring: 785.0N/m
6.
Elastic pullback spring length: 61.5±0.3mm
7.
Elastic hammer impact length: 75.0mm
8.
Riveting stake calibrate rate: 74±2