Pillow Blocks And Seals Flashcards

1
Q

What are 3 types of external rubbing seals?

A

1.Lip Seal
2.V-Ring Seal
3.Felt Seal

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2
Q

What are 2 advantages of a running seal?

A

1.Retains oil/grease
2.Creates a positive seal to keep contaminants out

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3
Q

What are 4 advantages to non-running seals?

A

1.No wear
2. No Friction is created
3. No speed limits
4. Can operate at high temps

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4
Q

What is the purpose of a garter spring in a lip seal?

A

To provide contact pressure when the shaft is stationary

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5
Q

What is a common name for a integral non rubbing seal

A

A shield

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6
Q

What are plain bearing pillow blocks usually made of?

A

Cast iron or steel with a soft metal liner.

Babbit, aluminum, nylon, Teflon

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7
Q

Anti friction bearing pillow blocks most commonly house which two types of bearings?

A

Double row spherical roller bearings
Double row self aligning ball bearings

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8
Q

Which pillow blocks capacity is not reduced by angular loads

A

Unit pillow blocks

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9
Q

Which pillow block is self aligning?

A

Unit pillow block

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10
Q

What should be done when re-greasing a labyrinth seal ?

A

Grease bearing first then inject grease into the seal

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11
Q

What seal is a bearing shield?

A

Integral non rubbing seal

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12
Q

What is the upper temperature limit on a synthetic lip seal?

A

200

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13
Q

How many degrees of loading does a Gib Joint pillow block have ?

A

300

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14
Q

On an integral rubbing seal where does the lip seal make contact?

A

On the inner race of the bearing

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15
Q

What is the recommended location for the grease nipple on a spilt pillow block

A

On the cap opposite the retaining nut

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16
Q

How many directions can a load on a bearing come from?

A

3
Axial, radial, combo

17
Q

How are horizontally split pillow block bearings supported when mounted on an angle?

A

Stop blocks

18
Q

What angle should you install a stop block at when on an angle?

A

55 degrees and higher

19
Q

How many degrees of zone loading is available on a solid plan bearing pillow block?

A

360 degrees

20
Q

What is the purpose of having a two piece pillow block?

A

To make assembly and maintenance easier

21
Q

How is a bearing removed or installed in a unit pillow block housing?

A

The housing has loading slots