YA00003905 Original Loader Steering Cyl for ZW250-6

The part number YA00003905 you inquired about is the original steering cylinder part number provided by Hitachi for the ZW250-6 wheel loader. The steering cylinder is the core executive component of the loader steering system, responsible for converting hydraulic energy into mechanical energy and driving the wheels to turn. This part number is specifically designed for the ZW250-6 model, and its universal model may cover other similar models in the ZW250 series (such as ZW250-5, etc.). However, to ensure 100% compatibility, it is necessary to confirm with Hitachi official or authorized dealers through the serial number of your device before purchasing. It is strictly prohibited to use non original or mismatched oil cylinders in terms of size and parameters, otherwise it may cause serious safety hazards such as heavy steering, deviation, oil leakage, and even steering failure.

This product is a double acting single piston rod hydraulic cylinder, which is a typical engineering machinery steering actuator. Its main structure includes cylinder barrel, piston rod, piston, sealing component, and ball joint at both ends. The ball joint design allows the oil cylinder to swing within a certain angle to adapt to the relative motion between the axle and the frame during steering. Its core parameters usually comply with industry standards: the working pressure range is 15-25MPa, which can withstand the peak pressure of the steering system; The diameter of the piston rod is designed according to the load of the model, usually between 80-120mm; The travel distance is determined based on the maximum turning angle of the steering wheel. The inner wall of the cylinder and the surface of the piston rod have undergone precision machining and wear-resistant treatment (such as hard chrome plating) to ensure long service life and low friction. The internal seals are made of high-performance materials that are resistant to oil and wear, such as polyurethane or nitrile rubber, to prevent hydraulic oil from leaking inside and outside.

Replacement cycle: As a metal structural component, the steering cylinder itself does not need to be replaced regularly without leakage, deformation, or abnormal wear. But its sealing components (such as piston seals and rod seals) are vulnerable parts. It is recommended to check them every 3000-5000 working hours or every 2 years. Once oil leakage, piston rod strain, or uneven steering force is found, the sealing components should be repaired or replaced immediately.