What is parallel groove elastic coupling

Parallel groove type elastic coupling usually has 3-5 slots to deal with the problem of low torque rigidity. The parallel groove type considers that the cutting groove is shortened without weakening the ability to bear and correct the deviation. The short cutting groove can enhance the torque rigidity of the coupling and overlap together, so that it can bear considerable torque. This performance makes it suitable for light load applications. For example, the connection between servo motor and ball screw. However, with the increase of groove size, the bearing load will also increase, but in most cases, it can effectively protect the bearing. Increasing the size means increasing the ability to withstand eccentricity.
Now most elastic couplings are made of aluminum alloy. Of course, there are also elastic couplings made of stainless steel. In addition to corrosion resistance, stainless steel elastic coupling also increases torque bearing capacity and rigidity, and can even reach twice that of similar products made of aluminum alloy. However, this increased torque and rigidity will be offset to some extent by the increased mass and inertia. Sometimes the bad influence will outweigh its advantages, so that users have to find other forms of couplings.