Engine bearing distress analysis
Maker and role
Federal-Mogul. Metal Removal Tooling Division, Creator
Production date
1986
Object detail
Accession number
ART-2017-1.2
Description
Poster with photographs of engine bearing damage for:
Dirt-
1. babbit bearing embedded with debris from machinings
2. overplated copper alloy bearing gouged by cast iron debris
3. aluminium bearing embedded with glass beads
4. damaged lining cause by dirt left on the bearing back
Lubrication -
5. result of dry start
6. severe wear as a result of inadequate oil clearance
7. distress from excessive thrust or insufficient axial clearance
8. result of low oil supply or oil starvation
9. bearing affected by oil dilution caused by excessive blow-by or a rich mixture
10. example of cavitation - a surface erosion caused by pressure changes in the oil film
Misassembly -
11. result of a lower half assembled as an upper, blocking oil flow
12. result of a wrong, reversed or shifted cap
13. excessive oil clearance is indicated by a short contact arc.
14. polished and oil-stained backs as a result of poor fit in the housing bore.
Misalignment -
15. warped crankshaft caused pattern of severe wear in the center
16. poorly finished crankshaft
17. tapered housing bore
18. bent connecting rod
Overloading
19. distress from excessive idling
20. distressed upper connecting rod bearings caused by engine lugging
21. distress from engine operation at higher than rated speed under load.
Corrosion -
corrosian caused by inadequate maintenance, extremely hot or cold operation, or inferior oils or fuels.
Dirt-
1. babbit bearing embedded with debris from machinings
2. overplated copper alloy bearing gouged by cast iron debris
3. aluminium bearing embedded with glass beads
4. damaged lining cause by dirt left on the bearing back
Lubrication -
5. result of dry start
6. severe wear as a result of inadequate oil clearance
7. distress from excessive thrust or insufficient axial clearance
8. result of low oil supply or oil starvation
9. bearing affected by oil dilution caused by excessive blow-by or a rich mixture
10. example of cavitation - a surface erosion caused by pressure changes in the oil film
Misassembly -
11. result of a lower half assembled as an upper, blocking oil flow
12. result of a wrong, reversed or shifted cap
13. excessive oil clearance is indicated by a short contact arc.
14. polished and oil-stained backs as a result of poor fit in the housing bore.
Misalignment -
15. warped crankshaft caused pattern of severe wear in the center
16. poorly finished crankshaft
17. tapered housing bore
18. bent connecting rod
Overloading
19. distress from excessive idling
20. distressed upper connecting rod bearings caused by engine lugging
21. distress from engine operation at higher than rated speed under load.
Corrosion -
corrosian caused by inadequate maintenance, extremely hot or cold operation, or inferior oils or fuels.
Media/Materials
Physical description
1 leaf : photographs (colour) ; 54.5x73 cm
Collection
Credit Line
Federal-Mogul. Metal Removal Tooling Division. 1986. Engine bearing distress analysis, ART-2017-1.2. Walsh Memorial Library, The Museum of Transport and Technology (MOTAT).
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