Domestic giant: 18-meter slewing bearing refreshes industry benchmark
On July 5, 2024, an achievement marking a new height in China's bearing technology was announced in Xin'an, Luoyang, Henan. On July 3, an 18-meter-diameter split three-row cylindrical roller slewing bearing specially designed for 3,500-ton cranes was officially unveiled. Its excellent size and exquisite manufacturing technology set a new record in the domestic bearing industry. .
Core component innovation
As the central nervous system of the crane, the slewing bearing undertakes crucial lifting and rotation tasks. In the past, heavy cranes were limited by the performance of the slewing bearing and often used roller designs. However, compared with roller-type cranes with the same lifting capacity, a crane using a slewing bearing has a volume reduction of approximately 20% and a weight reduction of approximately 25%. For example, a 3,500-ton crane using slewing bearing technology has a total weight of only 4,600 tons. Compared with the traditional design, it saves about 1,200 tons of materials and directly saves more than 3 million yuan in costs. Slewing bearings are an ideal choice for crane slewing mechanisms due to their low friction, easy maintenance, convenient replacement and long-term durability.
Technology research and innovation
During the R&D and manufacturing process, the scientific research team overcame a series of technical problems, including optimizing the friction coefficient, realizing unidirectional logarithmic curve modification of parallel rollers, accurately controlling the intermediate frequency quenching of arc-shaped parts, and mastering the materials during the intermediate frequency quenching process. The law of deformation. This series of innovative achievements were eventually transformed into 2 invention patents and 4 utility model patents, demonstrating China's independent research and development strength in the field of high-end equipment manufacturing.
International competitiveness rises
The successful rollout of the 18-meter-class slewing bearing is not only a major breakthrough for Chinese enterprises in the field of slew bearings for marine engineering equipment, but also marks that the overall technical level has ranked among the world's advanced ranks, setting the stage for China's manufacturing industry to advance on the global stage. The influence is further enhanced.
This milestone achievement not only reflects China's continuous progress in the field of high-end equipment manufacturing, but also sets a new technical benchmark for the global heavy machinery industry. As China's slewing bearing technology continues to mature, in the future, we are expected to see more high-end equipment designed and manufactured in China in fields such as marine engineering and large-scale infrastructure construction.
