1. Bearings

2. Bearings
While all bearings are intended to reduce friction they are generally categorized as either:
Anti-Friction
Rolling Element Bearings
Friction
Plain Bearings

3. Bearings
The primary purpose of a Bearing is to carry a load in either one of two directions:

4. Bearings
Some Bearings are subjected to a combination of the two directions:

5. Bearings
Plain Bearings Types
Bushes
Headed Bushes

6. Bearings Plain Bearings Types Sleeve
Low Friction Lining attached to a steel, cast iron or bronze back or shell
Split Sleeve, Precision
Insert or Slipper

7. Bearings
Plain Thrust Bearings
Step or Pivot
Collar Thrust
Tilting Pad

8. Bearings Advantages of Plain Bearings For Dynamic Applications:
The housings for plain bearings can be of smaller diameter
Any possible centrifugal problems connected with ball and rollers can be eliminated

9. Bearings Advantages of Plain Bearings If assembly is difficult:
Plain bearings may be designed in two (2) halves and bolted together, to permit insertion of the shaft

10. Bearings Advantages of Plain Bearings To Withstand Shock Loads:
Plain bearings have a resilient oil film so that they are not sensitive to wide clearances
Plain bearings are not prone to “bump”
Plain bearings are silent in operation

11. Bearings Advantages of Plain Bearings For Heavy Duty Loads:
Plain bearings have a high thermal conductivity
Plain bearings permit controlled distribution of oil under pressure for lubrication and cooling

12. Bearings Advantages of Plain Bearings Long Life Free From Breakdown :
Plain bearings are not sensitive to
Corrosion by damp
Fatigue
Breakage of balls and rollers by high local pressures due to entry of grit

13. Each is named for the type of rolling element it employs.
Bearings
There are five basic types of anti-friction bearings:
Tapered
Needle
Ball
Spherical
Cylindrical
Each is named for the type of rolling element it employs.

14. Tapered Rollers

15. Needle Rollers

16. Ball

17. Spherical Roller

18. Cylindrical Roller