RING - BACK UP (Komatsu KO30C-63-11210)

KO30C-63-11210: A damaged retaining ring can allow a shaft or bore component to shift out of position, leading to mechanical failure. During disassembly, a back-up ring may appear intact but lose its tension after removal. The ring's function is to secure a component axially within a groove, preventing lateral movement under load. Keeping a back-up ring in sound condition helps maintain proper assembly alignment and prevents unintended disengagement. This aftermarket replacement part references Komatsu as the OE maker and cross-references part number KO30C-63-11210. The item ships at approximately 0.01 POUNDS. Verify the serial number or application, then call (562) 693-7748.

Part number variants: KO30C-63-11210, ko30c-63-11210, KO30C6311210, ko30c6311210