1. L2 L1 d=L2*sin() ~ L2*(c/L1)    d=L2*sin() ~ L2*(c/L1) Upper
Bearing
Lower
Bearing
Dial
Indicator L1 L2
L1 = Distance from upper bearing to lower bearing = 75+48=123” *
L2 = Distance from lower bearing to dial indicator (24.5 would be bottom of coupling hub) *
* Per drawing QM A6
c = diametrical clearance: – 0.012”
= angle between shaft parallel to bearing centerlines and shaft pushed to extreme ends of clearance
~ c/L1
d = as shown on figure (d=c*L2/L1)
Swing = c+2*d = c+2*c*L2/L1 = c*(1+2*L2/L1)
Using c=0.012, L1=123”, L2=24.5, we compute swing = 0.012*(1+2*24.5/123)= 0.017”