BEARING - MAST ROLLER (JLG JL9421111800)

A worn mast roller bearing can cause rough vertical movement and uneven load handling. This aftermarket replacement part references the JLG catalog number JL9421111800. The bearing type supports rotational motion between the mast roller and its mounting surface. A common failure consequence is increased friction that leads to roller binding or premature wear. During operation, the bearing's condition directly affects the smoothness of the roller's travel path. The part is a bearing, which facilitates rolling contact rather than sliding contact. Verify the serial number or application, then call (562) 693-7748.

Part number variants: JL9421111800, jl9421111800