China HITACHI EX100 120-1 TRAVEL DEVICE FINAL DRIVE BOLT AND WASHER (OEM M221228 A590912) | Tonkee®

The OEM (Original Equipment Manufacturer) part numbers for the final drive bolt and washer are M221228 and A590912, respectively.

These components are specifically designed to meet the exacting standards and specifications set by Hitachi, the manufacturer of the EX100-1 and EX120-1 excavators. Here, we will delve into the specifications and importance of these components in more detail.

The final drive bolt is a precision-engineered fastener that connects various components of the travel device, securing them in place. It is typically made of high-strength steel to withstand the extreme forces and stresses encountered during the excavator's operation. The M221228 bolt is designed to exact dimensions, ensuring a precise fit within the final drive assembly. This accuracy is essential to prevent any play or movement that could lead to premature wear and tear, reducing the overall lifespan of the excavator.

Accompanying the bolt is the A590912 washer, which serves multiple purposes in the final drive assembly. First and foremost, it acts as a load distributor, evenly distributing the force exerted by the bolt across the components it connects. This prevents stress concentrations and potential damage to the final drive assembly. Additionally, the washer helps maintain the bolt's torque, ensuring that it remains securely fastened over extended periods of operation.

Both the bolt and washer are designed to withstand the harsh conditions typically encountered in construction and excavation environments.

This includes exposure to moisture, dirt, and various contaminants that could accelerate corrosion and compromise the structural integrity of these components. The materials and coatings used in their construction are selected to resist corrosion and maintain their performance even in adverse conditions.

Proper maintenance and replacement of these components are essential to ensure the continued safe and efficient operation of the Hitachi EX100-1 and EX120-1 excavators. Regular inspections should be conducted to check for signs of wear, damage, or corrosion. If any issues are detected, it is crucial to replace the bolt and washer promptly with genuine OEM parts like the M221228 and A590912 to maintain the excavator's reliability and safety.

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