Features

The minor error connects between two shafts can be removed.
The machining accuracy can be neglected.
The shaft alignment's time for the error tolerance connects between two shafts can be finished and installed easily, even the newcomer can do also.
The abnormal noise can be prohibited.
Small in dimension but can be loaded high tension & compression.
Long time for the machine parts and the packing in the cylinder or the rod sealing's damage can be prohibited, reduced the producing's cost.
The compression's decrease can be prohibited.