Back (Failure Cases)

1.6568 | 30CrNiMo5-5 broken shaft - 6
1.6568 | 30CrNiMo5-5 broken shaft - 1
1.6568 | 30CrNiMo5-5 broken shaft - 2
1.6568 | 30CrNiMo5-5 broken shaft - 3
1.6568 | 30CrNiMo5-5 broken shaft - 4
1.6568 | 30CrNiMo5-5 broken shaft - 5
1.6568 | 30CrNiMo5-5 broken shaft - 6
1.6568 | 30CrNiMo5-5 broken shaft - 7
1.6568 | 30CrNiMo5-5 broken shaft - 8
1.6568 | 30CrNiMo5-5 broken shaft - 9
1.6568 | 30CrNiMo5-5 broken shaft - 10
1.6568 | 30CrNiMo5-5 broken shaft - 11

1.6568 | 30CrNiMo5-5 broken shaft

Numeric designation1.6568
Chemical designation30CrNiMo5-5
Statebroken shaft
Etching3 % Nital

In the near-surface region of this shaft, a white layer (WEA White Etching Area) of tetragonal martensite has formed (rehardening zone). This was caused by slippage in the bearing seat. The WEA led to local spallings, which resulted in a fatigue fracture.

Failure Cases

View Category