Shaft Alignment Flashcards

1
Q

What are the two types of Misalignment?

A

Offset and angular

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2
Q

What are the four components?

A

Vertical angular misalignment ) vertical offset misalignment, horizontal angular misalignment, horizontal offset misalignment.

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3
Q

What is soft foot?

A

Means any foot that is solidly testing on the base

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4
Q

What is runout?

A

It occurs when either the periphery of a shaft or coupling is not concentric fits axis or it the face of the shaft or coupling is not perpendicular with the axis of rotation.

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5
Q

What is end float?

A

When the shaft moves axially

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6
Q

When does endfloat cause?

A

Face readings to be unreliable

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7
Q

Why would a machine with proper alignment still vibrate.

A

Runout

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8
Q

What does DBS stand for?

A

Dial Bar sag

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9
Q

What does DBS affect?

A

Vertical rim readings

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10
Q

Order of alignment

A

Angular to offset/ vertical to horizontal

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11
Q

Why do rim and face?

A

Fastest, only need one dial,

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12
Q

What does TPS stand for?

A

Total position sensing (going to zero)

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13
Q

What does TIR stand for?

A

Total indicator reading

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14
Q

What is the most common type of misalignment?

A

Combination

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15
Q

T/f. Misalignment reduces the load on bearings.

A

False

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16
Q

Runout refers to

A

Eccentricity

17
Q

Use elastomer shims to?

A

Correct angular soft foot

18
Q

In the rim and face formula, what dues the D represent?

A

The diameter of the circle the face dial makes.

19
Q

What is the max # of shims allowed?

A

Four or fewer