From car repair shops to construction sites, small jacks are not uncommon. But can you imagine that a hydraulic jack that relies entirely on manual operation can steadily lift a weight of 110 tons? In the testing workshop of Zhengtian Manufacturing (Huzhou) Co., Ltd., this has become a reality.
Recently, the company's 110 ton vertical manual hydraulic jack was officially launched on the market. At the stress testing site, as the staff smoothly pressed the handle, the number on the nearby instrument instantly jumped to over 150 tons, far exceeding the rated standard. At present, the common vertical manual jacks on the market have a load-bearing capacity of around 50 tons, and Zhengtian has raised this upper limit by 100 tons in one fell swoop.
For jacks, they often carry not only equipment, but also the safety of personnel and the progress of the project, "said Fang Ding, the general manager of the company. The core competitiveness of the product is not simply" maximum weight ", but also" long-term stability and reliability ". For example, in projects such as bridges and rail transit, the weight of individual components is usually between 20 and 100 tons. In actual construction, multiple jacks are used simultaneously, with each jack carrying about 40 to 70 tons. To ensure project quality, the lifting process often requires repeated lifting, holding, fine-tuning, and lowering. A single jack often needs to work dozens or even hundreds of times in a project. Therefore, in product testing, it is not only required that the jack maintain long-term stable operation within the commonly used load range, but also be able to withstand high-frequency repeated lifting operations.
The leap of technology originates from the innovation of processes. In the production workshop, the robotic arm performs precise welding operations, and each component is gradually taken offline. Fang Ding told reporters that the company's technology is currently at the forefront of the industry. The product adopts an integrated top structure that is automatically welded by robots, replacing traditional threaded connections. The threaded structure is prone to loosening and oil leakage under long-term heavy loads, while the welded structure significantly improves the connection strength, making the equipment more adaptable to harsh construction environments such as humidity, mud, and high loads, truly achieving strength and durability
With strong product capabilities, Zhengtian's jacks are leveraging a vast market space. In 2026, the company plans to produce 800000 jacks of various specifications, with a target output value of about 100 million yuan. Currently, there are 300000 orders in hand. Looking towards the future, Zhengtian will closely focus on the "dual pronged" strategy to deeply cultivate the domestic market, continuously expand channels and application scenarios, and actively "go global" by participating in international professional exhibitions to promote the high-end hydraulic tools made in China to the world.