Bearings and lubrication

Question 1

What are the three types of plain bearings?

Answer 1

• journal bearings
• guide bearings
• thrust bearings

Question 2

What do journal bearings do?

Answer 2

spin on crank shaft, cam shaft, and piston

Question 3

What do guide bearings do?

Answer 3

guide valves

Question 4

What do thrust bearings do?

Answer 4

controls side to side end thrust

Question 5

What are the two types of anti-friction bearings?

Answer 5

• cylinder bearings
• ball bearings

Question 6

What do cylinder bearings do?

Answer 6

help with radial and axial loads; however, they are more resistive.

Question 7

What do do bearings do?

Answer 7

help with radial and axial loads; less friction than cylinder; commonly used for two strokes

Question 8

what does lubrication do for the engine?

Answer 8

reduces wear and tear by reducing friction

Question 9

Low viscosity = _____ and high visosity = _____

Answer 9

Baby oil and honey

Question 10

Explain splash lubrication systems

Answer 10

Some engines use a oil dipper to splash around oil in the engine. Some engines use an oil slinger to sling oil around in the engine.