Technical Upgrade of Wantong Hydraulic Excavator Cylinders Boosts the Localization Advancement of Mining Excavation Equipment

Shandong Wantong Hydraulic Co., Ltd.'s self-developed hydraulic cylinders for excavators have become a key support for breaking through the technical bottleneck of core components in domestic excavation equipment, thanks to their stable high-pressure bearing performance and precise control. These cylinders can maintain stable rated working pressure output under the complex conditions of high load and heavy dust during excavation operations, while significantly extending continuous fault-free operation time compared to traditional products, effectively filling the technical gap in the domestic high-end excavator hydraulic cylinder field. According to Wantong Hydraulic's financial report for the first half of 2025, the revenue from the excavator hydraulic cylinder segment in its mechanical equipment cylinder business increased by more than 50% year-on-year, driving the overall gross profit margin of the mechanical equipment cylinder business to remain stable above 26%, becoming one of the important drivers of the company's revenue growth.

To address the core operational challenges of excavators such as high load, heavy dust, and frequent load fluctuations, Wantong Hydraulic has established a three-dimensional technology system of "high load-bearing - pollution resistance - precise control." In terms of material application, the company's excavator hydraulic cylinders use high-strength alloy forgings to form the cylinder body. Through a special quenching and tempering heat treatment process, the base material's tensile strength is raised to an industry-leading level. Coupled with multi-layer composite coating technology on the piston rod surface, wear resistance is greatly enhanced, meeting the long-term operational needs in mining scenarios with varying ore hardness.

At the structural design level, the R&D team innovatively adopted a multi-stage cushioning compensation structure, which uses built-in intelligent sensing elements to monitor load changes in real time and dynamically adjust oil circuit flow, effectively alleviating equipment vibration caused by sudden load changes during excavation operations, keeping impact vibration amplitude at a relatively low industry level. Meanwhile, relying on multiple new patents obtained by the company in 2025, the excavator hydraulic cylinders are equipped with a labyrinth multi-layer dust-proof sealing system. In high-dust working environments, the service life of the seals is significantly improved compared to industry standards, further reducing equipment maintenance frequency and costs. Additionally, Wantong Hydraulic increased R&D investment by 15.93% year-on-year in the first half of 2025, focusing on advancing the development of intelligent control modules for excavator hydraulic cylinders. Real-time data transmission of cylinder operating parameters has been achieved, providing key data support for intelligent control of excavation equipment.

With the gradual implementation of the "14th Five-Year Plan for Mine Safety Production" promoting intelligent mining equipment, the domestic excavator market demand has entered a rapid growth phase, directly driving the procurement demand for core hydraulic components to rise. Leveraging its customized R&D and production capabilities, Wantong Hydraulic can provide excavator hydraulic cylinders covering various specifications, with cylinder diameters and stroke ranges matching current mainstream excavator models. The company has successfully established stable cooperative relationships with many leading domestic excavation equipment manufacturers, and the market coverage of related products continues to increase. In the first quarter of 2025, the order amount on hand for Wantong Hydraulic's excavator hydraulic cylinders increased by more than 60% year-on-year, demonstrating strong market demand potential.

For a long time, the high-end excavator hydraulic cylinder market has been dominated by international brands. Imported products not only have higher procurement costs but also longer delivery cycles, restricting the upgrading of the domestic excavation equipment industry. Through continuous technological breakthroughs, Wantong Hydraulic's excavator hydraulic cylinders have reached international advanced levels in core performance indicators, with continuous operation reliability on par with international brands. Delivery cycles are nearly halved compared to imported products, and after-sales service response efficiency has greatly improved, gradually breaking the monopoly of international brands.

Industry analysis data shows that Wantong Hydraulic's market share in the domestic medium and large excavator hydraulic cylinder market has increased to over 25%, doubling compared to two years ago, becoming one of the core suppliers in the domestic excavator hydraulic cylinder field. Meanwhile, the core technologies accumulated during the development of excavator hydraulic cylinders, such as high-pressure bearing and intelligent control, are gradually being transferred to other product lines like Wantong Hydraulic's intelligent oil-gas suspension systems and mining hydraulic components, creating technological synergy effects. This helps the company build a product matrix of "heavy equipment hydraulic cylinders + intelligent hydraulic solutions," providing full-chain support for the intelligent upgrading of mining equipment.

As a representative enterprise in the domestic hydraulic components field, Wantong Hydraulic is using the technological breakthroughs in excavator hydraulic cylinders as a fulcrum to promote the shift of core components in domestic excavation equipment from "import dependence" to "independent controllability." With continuous technological iteration and expanding market share, Wantong Hydraulic's excavator hydraulic cylinders not only provide key support for improving the performance of domestic excavation equipment but also become an important symbol of China's manufacturing achieving a leap from "following" to "running alongside" in the high-end mining hydraulic field.