Antifriction bearings

Question 1

The term for no clearance in a bearing

Answer 1

Preload

Question 2

Single row deep groove ball bearing are also called

Answer 2

Conrad bearings

Question 3

Load and load direction of single row deep groove ball bearing

Answer 3

Combination

2 Direction

Question 4

Load and load direction of single row angular contact bearing

Answer 4

Combination

1 Direction Axial

Question 5

Load and load direction of self aligning ball bearing

Answer 5

Radial

Question 6

Load and load direction of double row spherical roller bearing

Answer 6

Combination

2 Direction

Question 7

Load and load direction of single row tapered roller bearing

Answer 7

Combination

1 direction axial

Question 8

Load and load direction of double row tapered roller bearing

Answer 8

Combination

or reversing thrust

Question 9

Load and load direction of needle bearing

Answer 9

radial

Question 10

Load and load direction of carb bearing

Answer 10

radial

Question 11

Advantage and disadvantage of maximum capacity deep groove bearing to single row deep groove ball bearing

Answer 11

More radial load

Less axial load

Question 12

Load and load direction of double row deep groove ball bearing

Answer 12

Radial

Question 13

Bearing best suited for shaft wobble

Answer 13

Internally self aligning

Question 14

Bearing used to accommodate angular misalignment in mouniting

Answer 14

externally self aligning ball bearing

Question 15

D
d
B

Answer 15

D=OD
d=ID
B=width

Question 16

In the 4 digit code 6XXX, the 6 represents

Answer 16

type of bearing

Question 17

In the 5 digit code X21XX, the 21 represents

Answer 17

21 is dimension
2=width
1= OD

Question 18

In the 5 digit code XXX08, the 08 represents

Answer 18

40 mm nominal bore

Question 19

The symbol K on a bearing represents

Answer 19

A taper of 1:12

Question 20

The symbol K30 on a bearing represents

Answer 20

A taper of 1:30

Question 21

C1,C2 represent

C3,C4,C5 represent

Answer 21

small clearance

larger clearance

Question 22

How to increase loaded zone

Answer 22

By decreasing internal clearance or by increasing contact angle

Question 23

Speed rating of non rubbing seal vs rubbing seals

Answer 23

Rubbing seal restrict running speed

Question 24

A bearing with closer tolerances will run

Answer 24

smoother and quieter

Question 25

A machine requiring minimum shaft deflection would require a bearing made

Answer 25

With closer than normal tolerances

Question 26

Upper case letter such as J6

Answer 26

Housing

Question 27

Lower case letter such as j6

Answer 27

Shaft

Question 28

Fit required on a rotating load

Answer 28

Interference Fit

Question 29

Fit needed for indeterminate load

Answer 29

Interference or transition fit

Question 30

Hot mounting temperature for sealed and unsealed bearing

Answer 30

80 degree sealed

120 degrees non sealed

Question 31

Bearing contact % on a shaft

Answer 31

85%

Question 32

Term for internal clearance after bearing has been running at operating tempurature

Answer 32

running clearance

Question 33

Term for internal clearance after bearing has been mounted

Answer 33

residual clearance

Question 34

Term for internal clearance before bearing has been mounted

Answer 34

initial clearance

Question 35

Preload is expressed in

Answer 35

pound force or newton

Question 36

How to set a double row self aligning ball bearing

Answer 36

tightening angle

Question 37

Type of loading when outside ring spins

Answer 37

Rotating load

Question 38

Type of loading when inner ring spins

Answer 38

Stationary Load

Question 39

Type of load when direction of the load might reverse at any time

Answer 39

Indeterminate Load