Alignment

Question 1

This is the condition where the centrelines of two coaxial shafts don’t form a straight line

Answer 1

Misalignment

Question 2

The four kinds of misalignment

Answer 2

Vertical Angular
Horizontal Angular
Vertical Offset
Horizontal Offset

Question 3

What kind of shims are recommended

Answer 3

Pre cut stainless steel (standard thickness from 0.001” to 0.125”)

Question 4

The four standard sizes of shims

Answer 4

Class A: 2”x2”
Class B: 3”x3”
Class C: 4”x4”
Class D: 5”x5”

Question 5

How many shims should you use max

Answer 5

3, maximum 4

Largest on bottom, second largest on top, smallest in the middle

Question 6

Should you back off the jackscrews before tightening hold down bolts?

Answer 6

Yes

Question 7

When the dial indicator on a is depressed the gauge is what?

Answer 7

Positive

Question 8

TIR stands for what?

Answer 8

Total Indicator Reading

Question 9

Two types of runout

Answer 9

Eccentric and angular

Question 10

Correction for vertical alignment formula

Answer 10

A/D x Feeler calculation = Front shim change
B/D x Feeler calculation = Back shim change
D= coupling diameter, A= distance to front foot, B= distance to back foot

Question 11

For soft foot the rule of thumb is to use this much of the value shown on the dial indicator for shimming

Answer 11

80%

Question 12

The most accurate way to measure for soft foot

Answer 12

Feeler gauges at the four corners of the foot