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Millwright 2nd Year > Bearings > Flashcards

Flashcards in Bearings Deck (26)
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0
Q

Many factors affect the bearings ability to carry a load such as….

A

Area of contact
direction of load
loaded zone

1
Q

Three directions of bearing load

A

Radial load
axial load
combination load

2
Q

Some types of bearings are more suited for high speeds and lighter loads, while others are more suitable for what…..

A

Heavier loads and lower speeds

3
Q

What is the most common ball bearing and what is its nickname

A

Single row deep groove ball bearing commonly called a Conrad bearing

4
Q

What is the difference between a maximum capacity deep groove ball bearing and a single row deep groove ball bearing

A

The maximum capacity deep groove has more balls to take heavier loads radially

5
Q

Double row deep groove ball bearing can take higher loads where…

A

Radially

6
Q

internally self aligning ball bearing is good for what purpose

A

To align a shaft that must operate at high speeds with extreme accuracy

7
Q

The spherical seat on the outside of the outer ring on an externally self aligning ball bearing allows for what

A

Misalignment

8
Q

Which bearing accommodates both radial and thrust loads

A

Single row angular contact ball bearing

9
Q

What are the three arrangements for a single row angular contact ball bearing

A

Face-to-face
tandem
back to back

10
Q

Face-to-face and back to back arrangements can handle reversing axial loads… What can the tandem arrangement handle

A

Tandem arrangement can only handle axial load in one direction

11
Q

Is it true that the double row angular contact ball bearing can take heavier radial and axial loads in both directions

A

Yes

12
Q

Why does a four point angular contact ball bearing have a split inner ring

A

To accommodate the assembly in some machines

13
Q

What can the four-point angular contact ball bearing only be used for so the load does not run on the split

A

Combination or axial loads

14
Q

The ball thrust bearing is designed for what load only

A

Thrust load

15
Q

List four Roller bearing shapes

A

Cylindrical
needle
tapered
spherical

16
Q

List the four types of roller bearings

A

Cylindrical
needle
tapered
spherical

17
Q

The spherical shape has a larger load area of contact in a ball bearing of the same diameter which gives it a greater what….

A

Radial load capacity

18
Q

Cylinder roller bearings handle a small amount of what……. because the raceway is slightly spherical

A

Misalignment

19
Q

The inner ring of a single row tapered roller bearing is called what

A

The cone

20
Q

The outer ring of a tapered roller bearing is called what

A

The cup

21
Q
A 6201 bearing would have a bore of and why
5mm
10mm
12mm
17mm
A

12mm

because the last two digits are 01

22
Q

What does the K mean in a bearing number
12 to 1 tapered bore
30 to 1 tapered bore
Shielded on both sides

A

A 12to1 tapered bore

23
Q
And in properly placed ground while welding on equipment is likely to cause what bearing damage
Contamination
Corrosion
Pitting
Spalling
A

Pitting

24
Q

What is the meaning of C3 in a bearing suffix
Tolerance smaller than normal
Clearance smaller than normal
Clearance greater than normal

A

Clearance greater than normal

25
Q

Sealed bearing should never be heated above what temperature

A

175°F or 80°C