-> Clear discolouration and fusion is visible on the sliding layer of the seized bearing shells. The crack formation is above all recognisable in the area of the edge.

LM11949bearing

Remedy If overheating damage occurs, the bearing must be replaced and the causes investigated. In the event of consequential damage, the cause of the primary damage must be rectified. If no further damage to the bearing is visible, the lubricant circuit and the stress on the bearing must be checked.

Is the engine bearing melted or burnt? Are there other signs of damage in the engine bearing shell in addition to initial rubbing marks, seizures and edge riding? You can find out how to detect heat cracks and melting areas and what to do here.

Overheating damage is the result of dramatic temperature development in the engine bearing shell, which goes hand-inhand with acute mixed friction. This is why heat cracks, discolouration and fusing are also always displayed for initial rubbing marks or seizure. The heat dissipation provided by the lubricant plays a central role here. If heat dissipation is no longer provided, this causes complete failure. Even with the initial signs of overheating, local changes to the microstructure occur and the integrity of the material is reduced. Heat cracks form at the affected areas.

LM11910 bearingDimensions

Is the engine bearing melted or burnt? Are there other signs of damage in the engine bearing shell in addition to initial rubbing marks, seizures and edge riding? You can find out how to detect heat cracks and melting areas and what to do here.