Seals And Lube

Question 1

Adequate lubrication is essential for?

Answer 1

Bearing life and efficiency

Question 2

What is #1 mtc priority?

Answer 2

Lubrication

Question 3

Bearings can be lubricated with?

Answer 3

Oil

Grease

Question 4

What are suitable for severe applications?

Answer 4

Synthetics

Dry lubes

Question 5

What is grease made of?

Answer 5

Petroleum or synthetic oil
Thickener
Additives

Question 6

What is grease good for?

Answer 6

Low to moderate speed applications

Question 7

What atmosphere is grease good for?

Answer 7

Food and chemical industries

Question 8

Oil is used for?

Answer 8

High speed or high temp

Question 9

What can excessive oil viscosity cause in rolling-element bearings?

Answer 9

Skidding

Question 10

What is least expensive type of oils?

Answer 10

Petroleum

Question 11

What is more expensive type of oil?

Answer 11

Synthetic

Question 12

What are dry lubes good for?

Answer 12

Low speeds, high temps

Question 13

How much lube for rolling elements bearings in housing?

Answer 13

1/3-1 1/2 diameter of lowest rolling element

Question 14

What do linear bearings do?

Answer 14

Support low friction motion in one direction

Question 15

What does linear bearings consist of?

Answer 15

Railway or guide -(fixed component)

Support (block, shoe, carriage or slide)- (moving part)

Question 16

What are seals for?

Answer 16

Keep elements out and lube in.

Question 17

What are the two types of seals?

Answer 17

Contact

Non-contact

Question 18

What are labyrinth seals good for?

Answer 18

High speed applications

Question 19

What do mounted bearings do?

Answer 19

Reduce friction where machined bearing seats are impractical

Question 20

Where are flanged cartridge blocks used?

Answer 20

Vertical surfaces where shaft passes thru

Question 21

Where are “take up units” used?

Answer 21

To adjust distance between shafts where belt tightening is required

Question 22

What are the two types of mounted rolling element bearings?

Answer 22

Set screw

Eccentric

Question 23

What is a “rod end bearing”?

Answer 23

Spherical ball that rotates within a race to accommodate a wide range of angular misalignment

Question 24

What type of motion can “cam-type” and load-following” handle?

Answer 24

Both symmetrical and elliptical

Question 25

What do “cam-type” and “load-following” bearings contain?

Answer 25

Inner and outer race with a plain or rolling element bearing between the races.