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Mechanics > 1st Mechanics Final > Flashcards

1st Mechanics Final Flashcards

1
Q

What are the 2 common types of lubrication?

A

1) Grease
2) Oil

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2
Q

What lubricants should be used in high temperature?

A

1) Synthetic
2) Dry

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3
Q

2 characteristics of linear bearings?

A

1) Force of motion on one plane
2) Fixed support

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4
Q

Keeps good shit in and bad shit out?

A

Seals

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5
Q

What are the 2 types of seals?

A

1) Contact
2) Non-contact

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6
Q

T or F:
Contact bearings are more suitable for high speed applications?

A

False, non contact

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7
Q

4 types of mounted bearings?

A

1) Pillow block
2) Flanged cartridge
3) Cylindrical cartridge
4) Take-up

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8
Q

What type of bearing has a shaft that passes through the machine frame at a 90° angle?

A

Flanged cartridge

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9
Q

Which type of mounted bearing is used for adjustments?

A

Take-up

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10
Q

2 ways to mount ball bearings?

A

1) Set screw
2) Locking collar

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11
Q

What type of bearing is used for angular Misalignment?

A

Rod-end bearings

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12
Q

What are 2 characteristics of cam-type & load following bearings?

A

1) Accommodates elliptical or symmetrical motion
2) Can be made up of any plain bearing or rolling element

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13
Q

What are the 3 groups of drive belts?

A

1) V or wedge
2) Flat
3) Timing or synchronous

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14
Q

V or wedge style is driven by a _____?

A

Sheave

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15
Q

Toothed or synchronous is driven by a _____?

A

Sprocket

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16
Q

Flat belt is driven on a _____ style pulley

A

Drum

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17
Q

What is the biggest advantage to drive belts?

A

They act as a clutch

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18
Q

What’s the biggest advantage of flat belts?

A

It’s flexibility

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19
Q

What are the 2 construction types for V or wedge belts?

A

1) Raw edge
2) Envelope

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20
Q

How do you identify raw edge from envelope?

A

Raw edge has a white line on the edge of the belt

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21
Q

What are the 4 layers of a belt?

A

1) Tensile cord
2) insulation rubber
3) Backing fabric
4) Cushion rubber

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22
Q

Which V-belts sits flush with the sheave?

A

Wedge

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23
Q

Which V-belt sits a little higher than the sheave?

A

Classical

24
Q

Notches in the cushion rubber means the belt is what?

A

Cogged

25
Q

What is an advantage to a cogged belt?

A

It’s flexibility

26
Q

What letter designates that a belt is cogged?

A

X

27
Q

What letter designates a wedge belt?

A

V

28
Q

What letters designate a classical V-belts?

A

A, B, C, D

29
Q

Which V belt is a light duty belt?

A

Fractional HP

30
Q

What letters designate a fractional HP belt?

A

2L, 3L, 4L & 5L

31
Q

What type of belt eliminates rollover?

A

Banded belt

32
Q

What belt relies on positive tooth engagement?

A

Timing or synchronous belt

33
Q

T or F:
Chain drives operate under tension.

A

True

34
Q

What’s the pin to pin distance on a chain called?

A

Pitch

35
Q

What 2 things connect chain?

A

1) Master link
2) Half link

36
Q

What 2 things can be used to prevent the master link or half link from coming loose?

A

1) Cotter pin
2) Spring clip

37
Q

T or F:
It is necessary to periodically lubricate self-lube roller chain?

A

False

38
Q

What increases on heavy series chain to accommodate it’s increased load capacity?

A

It’s width

39
Q

What letter designates heavy series chain?

A

H

40
Q

T or F:
The pitch stays the same on heavy or super series chain?

A

True

41
Q

What number designates stainless chain?

A

300

42
Q

What letter designates nickel/zinc chain?

A

600

43
Q

What type of chain is used when traveling long distance between sprockets?

A

Double pitch roller chain

44
Q

What number designates double pitch roller chain?

A

20

45
Q

Which chain allows for various types of attachments?

A

Hollow pin chain

46
Q

Which type of chain allows flexing around corners but is common for backlashing?

A

Side bow chain

47
Q

What type of chain is used on forklifts or counterweights?

A

Leaf chain

48
Q

What type of chain runs over a sprocket, is flat on one side and is commonly used on assembly lines?

A

Tabletop chain

49
Q

What is the flat side of the tabletop chain called?

A

Plate

50
Q

What are 3 characteristics of engineering class chain?

A

1) Larger pitch
2) Higher safety factor
3) More clearances

51
Q

What chain is used in power transmission?

A

Drive chain

52
Q

What chain transfers bulk materials on large rollers?

A

Conveyor chain

53
Q

What type of chain is the same as a conveyor, except it doesn’t have roller

A

Bushed chain

54
Q

What chain is a conveyer chain except the bushings are welded?

A

Welded chain

55
Q

This chain is used in high tension applications like in floor conveyers?

A

Bar & pin chain

56
Q

This chain is economical and is often used in overhead conveyor trolley system

A

Barloop chain

57
Q

This chain is designed for easy attachment/detachment of chain and lacks precision?

A

Detachable link chain

Mechanics (17 decks)

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