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Mechanics > Couplings > Flashcards

Couplings Flashcards

1
Q

A shaft coupling is used for what?

A

To connect two shafts and turn in the same direction on the same centerline

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2
Q

What are the 3 categories of couplings we discussed?

A
  1. Rigid
  2. Flexible
  3. Universal joint
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3
Q

What are the 3 types of rigid couplings?

A
  1. Flange
  2. Sleeve
  3. Ribbed
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4
Q

Pros of rigid couplings?

A

No lubrication, low maintenance and highest power transmission

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5
Q

Cons of rigid couplings?

A

No machine protection, perfect shaft alignment and they require the bearing to be very close to the coupling

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6
Q

What is the biggest advantage a flexible coupling has over a rigid coupling?

A

Allows for some misalignment

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7
Q

Most common types of universal joint couplings?

A

Block and pin
Cross and bearing

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8
Q

How do Universal joint couplings accommodate for misalignment?

A

By using a telescoping shaft that is square or splined

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9
Q

What is the heaviest duty rigid coupling?

A

Ribbed coupling

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10
Q

What is the lightest duty rigid coupling?

A

Sleeve coupling

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11
Q

Biggest advantage of ribbed coupling?

A

Maintenance free

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12
Q

Axial movement is also referred to as what?

A

In play or in float

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13
Q

List 3 functions of flexible couplings?

A
  1. Insulate the driver from the driven equipment
  2. Instrumentation
  3. Dampen vibration
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14
Q

What are the 2 things backlash provides?

A
  1. Clearance for misalignment
  2. A place for lubrication
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15
Q

Which flexible coupling is only used for instrumentation?

A

The miniature coupling

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16
Q

What are the 3 disciplines for the application of flexible couplings?

A
  1. Miniature discipline (instrumentation)
  2. The general purpose industrial discipline (store stocked)
  3. Special purpose industrial discipline (special order)
17
Q

Which coupling accommodates misalignment with axial clearance between gear teeth called backlash?

A

Gear coupling

18
Q

What are the 3 types of chain couplings?

A
  1. Double roller
  2. Silent chain
  3. Plastic chain
19
Q

What are some couplings that would require lubrication?

A

Double roller, grid couplings, silent chain

Mechanics (15 decks)

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