Flange Coupling:
The flange coupling is utilized to connect two shaft.
Figure: Flange Coupling
The torque from the shaft is transferred through shear keys. The couplings are linked by a number of bolts as illustrated in Figure (b).
Let d = Diameter of bolt,
R1 = Radius of bolt circle,
N = Number of bolts, and
τ2 = Safe shear stress in bolt.
SF is one bolt = ((π/4)d2 )
M is one bolt = ((π/4)d2 ) τ2 R1
∴ T = n (((π/ 4)d2)T2 R1