MENU Buscar NSK - Motion & Control

 

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Rachadura 1

Peça: Outer ring of a double-row cylindrical roller bearing
Sintoma: Thermal cracks occur on the outer ring side face
Causa: Abnormal heat generation due to contact sliding

Cracks 2

Peça: Roller of a tapered roller thrust bearing
Sintoma: Thermal cracks occur at large end face of roller
Causa: Heat generation due to sliding with the inner ring rib under poor lubrication

Cracks 3

Peça: Outer ring of a double-row cylindrical roller bearing
Sintoma: Cracks propagated outward in the axial and circumferential directions from the Flaking origin on the raceway surface
Causa: Flaking from a flaw due to shock

Cracks 4

Peça: Outer ring of a double-row cylindrical roller bearing used for outer ring rolling (Outer ring rotation)
Sitnoma: Cracks on outside surface
Causa: Flat Wear and heat generation due to non-rotation of the outer ring

Cracks 5

Peça: Raceway surface of outer ring of damage “Cracks 4”
Sintoma: Outside surface crack propagating to the raceway

Cracks 6

Peça: Inner ring of a spherical roller bearing
Sintoma: Axial Cracks on raceway surface
Causa: Large fitting stress due to temperature difference between shaft and inner ring

Cracks 7

Peça: Cross section of cracked inner ring of damage “Cracks 6”
Sintoma: Origin is directly beneath the raceway surface

Cracks 8

Peça: Roller of a spherical roller bearing
Sintoma: Axial Cracks on rolling surface

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