Anti-Friction Bearings

Question 1

To check the concentricity of a bearing housing bore, check the diameter with a ______ gauge in at least 3 locations.

Answer 1

Telescoping

Question 2

You can inspect a shaft for straightness by placing it in a lathe and checking for concentricity with a ______ indicator.

Answer 2

Dial

Question 3

If the inside of a bearing is discolored, it is likely due to ______.

Answer 3

Overheating

Question 4

If the bearing raceway has tracks that appear as axial lines that have the same spacing as the rolling elements, then the likely cause is _______ acring.

Answer 4

Electrical

Question 5

Hot mounting a bearing is most practical for bore sizes over _____ mm.

Answer 5

20

Question 6

Hot mounting a bearing usually involves heating a bearing to ______ degrees C.

Answer 6

80

Question 7

Never heat a bearing above ________ degrees C.

Answer 7

120

Question 8

Bearing _______ clearance is the total amount of clearance between the rolling elements and the raceway.

Answer 8

Internal

Question 9

_____ clearance is the internal clearance (Radial or axial) before the bearing is mounted

Answer 9

Initial

Question 10

_________ clearance is the internal clearance (radial or axial) after the bearing is mounted.

Answer 10

Residual

Question 11

_________ clearance is the internal clearance (radial or axial) in a bearing when it is running at its operating temperature.

Answer 11

Running

Question 12

When bearing internal cleance is measured by placing a dial indicator on the outer ring and moving it while holding the inner ring, it is called a _______ check.

Answer 12

lift

Question 13

_______ is the load that the rolling elements are under before any external load is applied.

Answer 13

Preload

Question 14

The surface on which the rolling members roll is called the ______.

Answer 14

Raceway

Question 15

The _______ or separator prevents the rolling elements from rubbing against each other.

Answer 15

Cage

Question 16

The cage or separator push the rolling elements through the ______ zone.

Answer 16

Unloaded

Question 17

Review parts of anti-friction bearing page 3.

Answer 17

Page 3

Question 18

Under load, a ball bearing shape changes from spherical to ______.

Answer 18

Elliptical

Question 19

If the load on a bearing is at 90 degrees to the shaft centre line, it is called a ______ load.

Answer 19

Radial

Question 20

If the load on a bearing is parallel to the shaft centre line, it is called an _______ load.

Answer 20

Axial

Question 21

A _____ load on a bearing is both radial and axial.

Answer 21

Combination

Question 22

A _____ load bearing had 100% loading on all rolling elements at the same time.

Answer 22

Thrust

Question 23

A higher radial load bearing ______. A high radial load bearing _____.

Answer 23

Maximum capacity deep groove ball bearing, Deep groove ball bearing.

Question 24

A self-aligning bearing have a _____ seat on the outside of the outer ring.

Answer 24

Spherical

Question 25

Match types of loads to each type of bearing.

Answer 25

See pic

Question 26

Know each bearing series #. Page 33

Answer 26

Page 33

Question 27

A 6210 bearing had a bore diameter of _____ mm.

Answer 27

50

Question 28

A bearing with a tapered bore is indicated with the letter _____.

Answer 28

K Pg. 34

Question 29

ToF. A C3 bearing had more internal clearance than a C4 bearing.

Answer 29

False. C1 Tightest, C5 most clearance Pg. 34

Question 30

Non-rubbing seals are often called _____.

Answer 30

Shields pg. 70

Question 31

Rubbing or non-rubbing seal? Sheet metal attached to the outer ring _____.

Answer 31

Non-rubbing Pg. 70

Question 32

Rubbing or non-rubbing seal? Sheet metal attached to the outer ring with a synthetic rubbing lip seal contacting the shaft _______.

Answer 32

Rubbing seal pg. 70