The engine is a complicated excavator part and it consists of hundreds of components including the engine piston, piston ring, piston pin, cylinder liner and connecting rod copper sleeve, spring, cylinder liner water blocking ring of this group of parts known as cylinder liner assembly (commonly known as four sets, six sets, seven sets). The piston among them, is of course one of the most important components. To get a quality piston, you should consider the following facts: compatibility, material, OEM or aftermarket. Many of you are bothered, what is the key difference between OEM and sub-factory parts? In this article, I will introduce you to the ultimate piston-picking guide and reveal the truth about sub-factory parts.
What Is a Piston?
The piston is one of the most important engine spare parts. It lies in the cylinder liner assembly and it requires a reasonable combustion chamber shape and excellent profile, and its material requires good mechanical properties, heat transfer properties, and control of thermal expansion properties. The piston, piston ring, and cylinder liner require excellent sealing, lubrication, and wear-resistant quality of three. The construction machinery diesel engine is often in the dust, poor thermal conditions, the work intensity of the harsh environment, and most of the use of dry thin-walled cylinder liners, prone to failure, so the selection of its cylinder liner components more demanding requirements.
Key Characteristics and Material Requirements
It is because the cylinder liner components of the comprehensive technical performance requirements are more demanding, the world follows a recognized specialization, intensification, mass production of the law, the host plant, such as Komatsu, Carter, Mitsubishi, Isuzu, Nissan, Nissan, Cummins, and other world-renowned manufacturers from their own production of piston cylinder liner and piston ring and its components, and these products to the strong technical base, product development capabilities, professional These products are given to specialized factories with strong technical foundation, strong product development capability and advanced professional technology and equipment for research and development and production.
World famous construction machinery engine pure supporting piston cylinder liner components are concentrated in a few specialized factories in the world production. This is more economical than the host plant’s large and comprehensive production, quality is more guaranteed. Similarly, the purchase of cylinder liner components must also follow this law.
Quality Differences: Original vs. Sub-factory Parts
Imported engine cylinder liner components according to their source are divided into two categories, namely, the original parts (including pure parts and supporting factory parts that OEM parts), and sub-factory parts (including imported non-original parts and domestic parts). The host factory from the supporting production plant to buy and sell after-sales maintenance parts of the accessories is called pure parts, quality assurance, but the price is expensive. Host of the original supporting production plant parts that OEM parts, and pure parts from a family, the same quality, only packaging differences, but the price is lower than the pure parts. Sub-factory parts are non-host supporting plants in the market that need to be based on the original parts of the physical mapping imitation, the price is lower, but the quality is far from the original parts that are stable and reliable.
Why OEM is Better？
Because the original parts from trial production to mass production have experienced a large number of design improvements and reliability tests, and have accumulated a set of proprietary technology (KNOW-HOW); and a host of high-volume supporting demand for the plant as a backing, the OEM parts factory to establish a high degree of specialization of advanced production lines, to adapt to the mass production of the technology specifications and quality assurance system, and therefore can stably control and ensure the quality of mass production, so that it OEM parts factories have established specialized advanced production lines, process norms, and quality assurance systems that are suitable for mass production, thus they can stably control and guarantee the quality of mass production and make them become the preferred parts of OEMs.
Shop at FridayParts
FridayParts offers aftermarket parts for heavy equipment that meet OEM standards. Whether it is engine parts or heavy machinery parts, FridayParts always provides the most reliable choice. Our parts come from the world’s leading manufacturers to ensure that your equipment runs efficiently and reduces downtime. Buy now, improve efficiency, save costs, and make FridayParts your trusted partner!