The Characteristics of the Running-In Period for Construction Machinery: Understanding the Challenges and Best Practices

Today, let's discuss the characteristics of the running-in period for construction machinery:

1. Accelerated Wear: During the running-in period, newly assembled machine parts undergo wear at a faster rate. Factors such as rough friction surfaces, small contact areas, and uneven surface pressure contribute to this accelerated wear. The rough surfaces rub against each other, with metal scraps acting as abrasives, further increasing friction and wear on the mating surfaces. It is important to note that overloading the machine during this period can lead to part damage and premature failure.
2. Insufficient Lubrication: Newly assembled parts often have small fitting clearances, making it challenging to achieve uniformity. This hinders the formation of a consistent oil film on the friction surfaces, resulting in poor lubrication. The lack of an adequate oil film increases the likelihood of abnormal wear on machine parts. In severe cases, it can cause scratches or seizures on precision-fit surfaces, leading to failures.
3. Loosening: Geometric deviations and variations in matching dimensions are common in newly processed and assembled parts. The combination of impact, vibration, heat, deformation, and excessive wear in the early stages of use can cause originally tightened parts to become loose.
4. Leakage: Vibrations, heat, and machine movements can cause leakage in the sealing surfaces and pipe joints of the machine during the running-in period. Defects in casting or processing, which may be difficult to detect during assembly and debugging, can be exposed during operation, resulting in oil or water leaks. Therefore, it is common for leakage to occur during the running-in period.
5. Potential for Operating Errors: Operators, particularly new ones, may have limited understanding of the machine's structure and performance. This lack of familiarity can lead to operating errors, potentially causing malfunctions and even mechanical accidents.

During the running-in period, it is crucial to follow manufacturer guidelines and recommendations for maintenance, lubrication, and operating procedures. Regular inspections, proper lubrication, and careful operation can help mitigate the challenges associated with this period, ensuring optimal performance and longevity of the construction machinery.