Shop HITACHI EX200-5 LOWER ROLLER BOLT (OEM HI 4331851) | Tonkee®

The OEM HI 4331851 bolt is meticulously engineered to meet the stringent requirements of heavy-duty construction equipment like the Hitachi EX200-5 excavator.

It is constructed from high-quality materials, typically heat-treated steel, to withstand the demanding conditions of construction and excavation work. This steel's durability is crucial for preventing wear and tear, ensuring the long-term reliability of the machine's undercarriage.

One of the primary features of this bolt is its thread size and pitch. The thread is precision-cut to match the corresponding nut and the threads within the lower roller mounting assembly. This compatibility is essential for a secure fit and ease of installation, reducing the likelihood of premature loosening or damage. The specific thread size and pitch for the OEM HI 4331851 bolt may vary, depending on the manufacturer's specifications and regional variations.

Furthermore, the bolt typically includes a flange or washer head, which serves a dual purpose. Firstly, the flange or washer provides a larger contact area when the bolt is tightened, distributing the load more evenly across the lower roller's mounting surface. This helps to prevent deformation and damage to the mounting holes on the roller or the undercarriage frame.

Secondly, the flange or washer head often includes a series of pre-drilled holes or slots.

These features allow for various tightening methods, including the use of specialized tools like torque wrenches. Proper torque application is critical in maintaining the integrity of the undercarriage assembly, ensuring that the lower roller remains securely attached during operation.

The length of the OEM HI 4331851 bolt is another crucial specification. It must be precisely sized to accommodate the thickness of the lower roller's mounting bracket, the undercarriage frame, and any additional components like spacers or washers. An improperly sized bolt can lead to inadequate fastening, compromising the machine's stability and safety during operation.

Moreover, the bolt's surface finish is typically corrosion-resistant, as construction equipment frequently operates in harsh environments where exposure to moisture, dirt, and debris is common. This corrosion resistance prolongs the bolt's lifespan and prevents rust or other forms of deterioration that could weaken the fastening mechanism.

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