... device emergency braking device simple structure, convenient operation Power Press(J23)J23 series of press machine is general open tilting press machine ... simple structure, convenient operation and reliable performance. JC23-6.3, J23-10B, J23-16, J23-25A, JG23-35A, JG23-40A, JC23-63A and ... J23-80A use the rigid rotating key clutch. It is convenient ...