1. 15.8 BEARING AND SEALS
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2. BEARING TYPE
• Purpose is to take load axial and radial.
• Reduce friction between shaft and casing.
• Type :
– Roller (axial)
– Ball (axial and radial)
– Tappered roller

3. Roller bearing Ball bearing Tappered roller bearing

4. ROLLER BEARING

5. BALL BEARING

6. SEAL TYPE
• Purpose :
– To prevent oil leakage from the bearing and
system.
• Type
– Labyrinth seal
– Carbon seal
– Brush type
– Ring type

7. LABYRINTH SEAL
• The oil prevented from exiting by the air
entering across the labyrinth seal
Oil pressure area Air pressure area

8. CARBON SEAL
• Using carbon and graphite.
• Carbon surface is stationary with highly polish
mating surface.

9. BRUSH SEAL
• The seal act like labyrinth seal.
• Leakage less than labyrinth
• Not wear like carbon seal

10. PRINCIPLE OPERATION