How to determine the size of the star coupling

　　When customers inquire about the condition of the coupling, they often forget to understand when recording the sizeStar couplingThe size of the keyway, some customers don't know much about the keyway, and they often say that it is a national standard key. At this time, we need to provide the specific size.

　　Generally speaking, the couplings that need to open the key are generally diaphragm couplings, plum couplings, slider couplings, star couplings, because these couplings consist of two half couplings Composition, there are fewer restrictions on key opening, and the two sides can have different holes to open different keys.One-piece couplings, parallel couplings, and threaded couplings are more difficult to open the key. If it is a through hole, it is more troublesome if the holes at both ends are different.

　　Therefore, when placing an order, the user must confirm whether the star coupling needs a keyway according to the usage, and what size key to open, whether it is a non-standard keyway or a national standard keyway.