Couplings Flashcards

1
Q

Uses for Couplings

A
  • connect two shafts rotating in the same direction
  • allow misalignment
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2
Q

Types of Couplings

A
  • Rigid
  • Flexible
  • Fluid
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3
Q

What are Rigid couplings good for?

A

positive drive

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4
Q

What are flexible couplings good for?

A

misalignments

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5
Q

What are fluid couplings good for?

A

Reduce shocks

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6
Q

Three types of misalignments

A
  • angular
  • torsional
  • parallel
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7
Q

definition of a rigid coupling

A

used to connect shafts that are precisely align

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8
Q

examples of rigid couplings

A
  • flange coupling
  • sleeve coupling
  • ribbed coupling
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9
Q

advantages of flange couplings (3)

A
  • easy installation
  • minimum wear
  • easy to maintain
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10
Q

sleeve couplings are made of ______ _______

A

one material

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11
Q

sleeve couplings are used for ____ ____ applications

A

medium duty

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12
Q

flange couplings are used for ____ ____ applications

A

heavy duty

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13
Q

Ribbed Coupling

A

two halves held together by bolts

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14
Q

Advantages of ribbed couplings

A
  • quick installation
  • no wear
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15
Q

ribbed couplings are used for ___ _____ applications

A

heavy duty

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16
Q

Primary applications of flexible couplings

A
  • accommodate misalignments
  • transmit torque
17
Q

working mechanical movement (Flexible couplings)

A
  • flexible flange coupling
  • flexible chain
18
Q

working flexible material (flexible coupling)

A
  • jaw
  • shear doughnut
19
Q

working compression or stretching (flexible coupling)

A
  • jaw
  • shear doughnut
  • electromagnetic
20
Q

Definition of Gear Coupling

A

two external gears with hub, flanged sleeves with internal gear

21
Q

Gear Couplings allow for ____ & _____ misalignments

A

axial & angular

22
Q

Definition of chain coupling

A

two sprockets and double strands chains

23
Q

chain couplings accommodate misalignments due to clearances. What are these alignments?

A
  • angular
  • axial
  • slight amounts of parallel if designed properly
24
Q

Types of Chain Couplings

A
  • double roller (light to medium duty
  • silent (heavy duty)
  • plastic (light)
25
Q

definition of grid couplings

A

metallic grid coupling with two hubs, steel trips, and grid waves

26
Q

definition of jaw coupling

A

two hubs with jaws and flexible spider

27
Q

jaw couplings are used for ____ _____ applications

A

high power

28
Q

jaw couplings handle which types of misalignments?

A

parallel and angular

29
Q

definition of shear type donut coupling

A

two shafts with internal gears and shear doughnut with external teeth

30
Q

misalignments of shear type doughnut couplings

A
  • shear-torsional
  • minimized parallel
  • angular misalignment
31
Q

angular flexibility of Universal joints

A

30 to 40 degrees