Synchronized operation for input and output
This in a large scale spring closed type non-excitation operation(negative operation) electromagnetic clutch suitable for roll mill synchronous run of right and left hooks of a crane.

• ●Input and output shafts are easily adjusted for synchronization, and securely coupled by a strong spring.
• ●This clutch is designed for roll mill screw down, therefore, is robust and highly reliable, and is easy to disassemble and assemble.
• ●This clutch has a small self inertia, and exerts good accelerating characteristics for control of large volume.