Keyway type flexible coupling TLK11 includes keyway type coupling (single plate springs) and keyway type coupling (double plate springs). Body material is steel. curved jaw Keyway type shaft coupling (single plate springs) keeps following features: 1. using keyway connect, plate spring coupling;2. zero backlash; 3.excellent response and high torque capacity; 3. identical clockwise and anticlockwise rotational characteristics; 4 Stainless steel plate springs absorb parallel,