4633972 Excavator Cushion for ZX450-3

Part number 4633972, this is a genuine cushion layer (CUSHION) produced by Hitachi in Japan. This component is designed specifically for shock absorption, cushioning, or sealing of the Hitachi ZX450-3 large hydraulic excavator. This also applies to models of the same series (such as ZX450-5A, ZX450LC-3, etc.) that use the same chassis, engine, or installation point for the working device. As an original structural component, its thickness, hardness, aperture, and installation contour are precisely matched with the equipment interface

This product is a black round (or specific shape) rubber/polyurethane elastomer cushion with a pure black body. It is made of high-quality synthetic rubber or polyurethane that is oil resistant, ozone resistant and anti-aging, and has excellent compression permanent deformation and elastic recovery ability. Its core function is to be installed between metal structural components (such as the cab, engine bracket, radiator, or cab floor) and the frame, playing a role in vibration isolation, shock buffering, eliminating abnormal noise, and compensating for installation tolerances. The original parts ensure stable performance within a wide temperature range of -30 ° C to 100 ° C, effectively absorbing and attenuating the severe vibrations and impacts generated by ZX450-3 during heavy-duty operations, protecting precision components, and improving operational comfort.

Inspection cycle: Every 500 working hours or during regular maintenance, check the cushion layer for aging, cracking, permanent crushing deformation, tearing, or detachment from the installation position. Replacement timing: When there are obvious cracks, loss of elasticity (unable to rebound after pressing), thickness reduction of more than 1/3, or abnormal shaking or noise at the connection of the components in the cushion layer, it must be replaced in groups or as a whole. Caution: It is strictly prohibited to operate the equipment without aligning the cushion layer or tightening the bolts; Avoid direct sunlight, high temperatures, and oil stains during storage.