Z12A type locking assembles

Expansion sleeve (short for carbylamine), locking coupling (short for carbylamine) is a new modern advanced mechanical foundation.
It is a new type of keyless coupling device widely used in the world to realize the connection of machine parts and shafts, and realizes the load transfer by tightening the pressure and friction generated between the inclusion surfaces with 12.9 high strength screws. As an advanced basic part, the industrial developed countries such as Germany, Japan and the United States in the 1980s widely used this new technology for mechanical connections under heavy loads. In the connection between the wheel and the shaft, it is a keyless connection device that realizes the load transmission by tightening the pressure and friction generated between the inclusive surface by tightening the high-strength bolt, so as to realize the connection between the machine parts (such as gears, flywheels, pulley, etc.) and the shaft to transfer the load. It is used through the action of high-strength bolts, so that between the inner ring and the shaft, the outer ring and the wheel hub to produce a huge holding force; When the load is borne, the combined pressure of the expansion sleeve and the machine parts is relied on and the resulting friction transmits torque, axial force, or a combination of the two.