Engine Connecting Rod

Ningbo Shengfa Hardware is a company specializing in the production of automotive metal components. Since 2007, our factory is located in the center of Ningbo City, Zhejiang Province, a region with strong supply chain infrastructure and convenient transportation. For nearly two decades, we have combined skilled production technology with a stable quality control system to provide automotive parts to customers around the world. One of our core specialties is the production of engine connecting rod.

In the internal combustion engine, the engine connecting rod is an essential component. They are responsible for converting the linear motion of the piston into the rotational motion of the crankshaft. Due to the huge force, the connecting rod must withstand the harsh thermal environment, rapid direction change and continuous high pressure. To this end, materials, precision and manufacturing technology are crucial.

At Ningbo Shengfa Hardware, our engine connecting rod is made of high quality 5140 chromium steel. In the automotive industry, this alloy is highly respected for its excellent strength, toughness and fatigue resistance balance. 5140 chromium steel performs better under cyclic loading, and its tensile strength is higher than that of ordinary carbon steel. It can withstand higher engine stress levels without warping or fracture. In order to improve the hardness and wear resistance of the material, heat treatment can be carried out after forging. In actual engine conditions, this extends the working life of the connecting rod.

We manufacture these engine connecting rods by hot forging process. Hot forging is one of the most effective technologies for forming metal components that must withstand long-term stress. By heating the steel above its recrystallization temperature and pressing it into a precision mold, the grain structure of the metal can be refined. Therefore, the product is more solid, dense and has superior directional strength. Hot forging has higher productivity and better mechanical quality than casting, which may introduce internal pores or be produced by billets. Both are less efficient and require more materials. Before final processing, we use X-ray and ultrasonic testing to detect internal defects.

Every connecting rod we manufacture has to go through some surface treatments, such as polishing and shot peening. Shot peening is particularly critical. It prolongs the fatigue life of components by reducing surface tension and sealing microcracks. In many engines, fatigue failure is one of the main reasons that the connecting rod needs to be replaced. Under similar conditions, the shot peening strengthened bar can often be 30 % ~ 50 % longer than the untreated bar. Our connecting rod is also subjected to stress relief after heat treatment to ensure dimensional stability and performance consistency.

We understand that no two engines are the same. At Ningbo Shengfa, we provide customized manufacturing based on customer drawings or specifications. Whether you need to customize profiles, H-beams, or I-beams, we can modify our processing machines and forging dies to meet your special requirements. In order to understand performance requirements such as installation limitations, bearing size and stroke length, our in-house technical team works directly with customers. We also support low to medium batch production with fast turnaround times.

One of the advantages of Ningbo Shengfa Hardware is our integrated manufacturing capability. Our forging production line is equipped with automatic feeding system and high tonnage hydraulic press. We have a precision CNC machining center for finishing operations, including hole size measurement, pin assembly and surface grinding. Our quality inspection department performs hardness testing, size verification, and non-destructive testing on each production batch. Because we keep all processes internally, communication is smoother, lead times are shorter, and costs are easier to control.

For many years, customers from Europe, North America and Southeast Asia have chosen to cooperate with Ningbo Shengfa Hardware, not only for our technical capabilities, but also for our reliability. Our team is responsive and pays attention to details. Whether it is design consulting or logistics issues, our purpose is to provide clear answers, without delay. Many of our long-term customers started with small orders and expanded after validating our consistency and flexibility.

Durability is another core value in our philosophy of production. Our engine connecting rod is designed for long life. Under normal operating conditions, rods made of 5140 chrome steel using our hot forging process can well exceed 150,000 to 200,000 kilometers of mileage, depending on the design and maintenance of the engine. This durability reduces maintenance costs and improves the long-term performance of the vehicle.

We are proud that, in addition to meeting industry requirements, our products often exceed customers in terms of life and functionality. Choosing Ningbo Shengfa Hardware means choosing a partner who knows the important role that each component we manufacture plays. We should not overcorrect; instead, we used a real approach and continuous quality control to achieve results.

Our facilities are also located near the port of Ningbo, one of the busiest seaports in China, which allows us to efficiently transport goods to customers around the world. Whether it's engine manufacturers, parts distributors, or performance tuning shops, you can rely on us to provide reliable products and consistent support.

These nuances make a difference in the competitive automobile manufacturing industry. The difference between a well-run engine for many years and a prematurely failed engine can be determined by the quality of the engine connecting rod. To this end, we Ningbo Shengfa Hardware does not take any shortcut. From the selection of materials to the last inspection, each stage is supported by data, procedures and professionalism.

If you 're looking for a supplier that can deliver high-strength engine connecting rods tailored for your application, Ningbo Shengfa Hardware is ready to work with you. Among the global automotive supply chain, we are a reliable choice because of our personnel, equipment and experience. Let 's demonstrate its accuracy and reliability in real-world scenarios.

For a price or to discuss your needs, get in touch with us now. We are eager to establish long-term cooperation based on performance and trust.