4444905 Original Excavator Fan Rubber Ring for ZX120 ZX130-5G ZX110

The Hitachi original excavator fan rubber ring (universal part number: 4444905) is a key shock absorber and sealing component in the engine cooling system fan assembly. This part is mainly suitable for Hitachi's various medium to large excavators, commonly found in models such as ZX330, ZX350, ZX330-5G, ZX350H-3G, etc. It is used to flexibly install the cooling fan on the bracket to isolate engine vibration.
 

The core function of this rubber ring is to serve as an elastic support and isolator for the engine cooling fan. Its main functions include: absorbing and isolating the vibration and noise generated during the operation of the engine and fan, improving driving comfort; Prevent direct contact between the fan and the metal bracket from causing wear and abnormal noise; At the same time, a certain seal is formed between the fan and the mounting base to prevent dust and moisture from entering.
 

The maintenance core of fan rubber rings lies in regularly checking their physical condition and replacing them in a timely manner. It is recommended to check the rubber ring for cracks, hardening, permanent deformation, surface powdering, or detachment from the metal bracket every 500 hours of work or every 3 months. When cleaning, use a soft cloth and neutral cleaner, and avoid using gasoline, organic solvents, or strong acids and alkalis to accelerate rubber aging.