Banded carbides appear on the surface of the elastic pin coupling
When a rotating cylinder with an unbalanced moment, such as a coupling, is not restricted by the bearing, it rotates around the principal axis of inertia, which is consistent with its geometric vertical axis. Equal and opposite torques are sometimes called couple unbalance. The
elastic pin coupling shaft error is not only produced in the assembly line of machine equipment, but also the vibration, thermal deformation, rolling bearing damage and so on in the whole process of work.

The elastic ring should be of the same size and not mixed with the elastic ring of different sizes, especially the elastic ring on the same pin should be replaced with a new one, and if the old one is used, the old one should be used uniformly to avoid mixing the old and the new. Banded carbide on the surface of elastic pin coupling will make the hardness and organization uneven after quenching and tempering, and easy to deform, which is also a defect of pearlite and ferrite banded organization along the processing deformation direction.
Elastic pin coupling shaft
The boring of the coupling is usually carried out on the lathe, because the machining degree of the coupling sleeve hole is very high, so the finishing of the hole is usually by grinding method. The finishing of the outer surface of the coupling is carried out in the same clamp where the boring is carried out. The dimensions of the machined holes and the contact between the holes and the mating surface of the shaft need to be checked for mass-produced couplings.
Elastic pin coupling in the whole process of carrying out the distortion, the coupling transmission will have a variety of specifications are not the same bending stiffness, but also can cause a series of distortion azimuths, all the twisted parts are to be deformed, when the dynamic distortion, its height and width can be adjusted reasonably, Based on that frequency a reasonable avoidance of a series of technical characteristics can be established.