4349621 Original Excavator Hose Clamp for ZX800

Hitachi original excavator hose clamp (part number: 4349621) is a key fastener in Hitachi excavator hydraulic, fuel, cooling and other pipeline systems. It is used to reliably fix the hose to the joint or frame, preventing the hose from loosening or wearing due to vibration or pressure impact. As an original standard component, it is widely compatible with multiple Hitachi excavator models, including the ZX series (such as ZX60, ZX70, ZX200, ZX210, ZX240, ZX330, etc.) and the EX series (such as EX60, EX100, EX200, EX300, etc.).

This original hose clamp is the "safety lock" of the pipeline system. Its core function is to firmly fix the rubber or steel wire braided hose on the joint or pipeline through uniform radial clamping force, effectively preventing high-pressure oil, fuel or coolant leakage, and suppressing the swinging and friction of the hose caused by equipment vibration and pressure pulsation, thereby extending the service life of the hose and ensuring system safety. As an original component, it strictly follows Hitachi's quality standards and is usually made of high-strength stainless steel or carbon steel with surface galvanizing/Dacromet treatment, which has excellent corrosion resistance, fatigue resistance, and vibration resistance. Its design may be worm drive, spring buckle or bolt fastening, with moderate bandwidth and smooth edges to ensure even distribution of clamping force and no damage to the outer rubber layer of the hose.

The maintenance core of this hose clamp lies in regularly checking its fastening status and integrity to prevent leakage risks caused by looseness or damage. Daily inspection: It is recommended to visually inspect all hose clamps for rust, deformation, and cracks every 250 working hours or every week, check for loose or detached fastening screws or buckles, and manually check for axial movement of the clamp body. Key inspection: After severe vibration of the equipment or replacement of the hose, it must be rechecked and tightened according to the specified torque. Timing of replacement: When the hose clamp is severely corroded and cannot be disassembled, the strip steel is broken, the worm thread slips, or the clamp body is significantly deformed, resulting in insufficient clamping force, it should be replaced in a timely manner.