END FLOAT
Limited end float of driving and driven members is permitted because the grid slides freely in the lubricated grooves
TORSIONAL FLEXIBILITY
Torsional flexibility is the Taper Grid Coupling to torsionally deflect when subjected to normal, shock or vibratory loads, providing flexible accommodation to changing load conditions.

TORSIONAL FLEXIBILITY UNDER DIFFERENT LOADING
1) LIGHT LOAD
The grid bears near the outer edges of the hub teeth. The long span between the points of contact remains free to flex under load variations
2) NORMAL LOAD
As the load increases, the distance between the contact points on the hub teeth is shortened, but a free span still remains to cushion shock loads.
3) SHOCK LOAD
The coupling is flexible within its rated capacity. Under extreme loads, the grid bears fully on the hub teeth and transmits full load directly

ADVANTAGES
When overloaded, grid is designed to be a part of safety pin and prevent catastrophic breaking of machinery part or shaft by cutting the grid. When the center misalignment is too large, grid coupling can protect the relating machinery part by the virtue shearing of the grid, or cover, or tooth. The life span of the parts (mechanical seal and bearing etc.) can be extended two times or more. Establishment, assembly and maintenance are easy by getting rid of center misalignment. Repair and maintenance is scarcely needed, it reduces maintenance cost and time.