Will the engine be damaged if it experiences bearing seizure?

[BentleyLynn]

Bearing seizure in an engine can lead to crankshaft lock-up. Engine bearing seizure: After bearing seizure occurs, the crankshaft may suffer deformation and damage. If repairs are performed without proper alignment and grinding, when the engine experiences bearing seizure and crankshaft lock-up, the crankshaft will be subjected to bending and torsional forces. The high-speed rotating crankshaft-connecting rod mechanism undergoes sudden braking, making the crankshaft highly prone to bending and twisting deformation. The journal surfaces may experience varying degrees of damage such as burning, scoring, and out-of-roundness. If repairs are conducted without inspecting, aligning, and grinding the crankshaft, and only the bearings are replaced, the proper fit between bearings and journals will be compromised. The coaxiality of main journals and connecting rod journals will exceed tolerance limits, leading to increased friction and subsequent continuous bearing seizure. Repair method: Replace the bearings and clean the crankshaft oil passages.