ZWZ announces new bearing assembly technology patent to improve product operation accuracy and stability
On June 27, 2025, according to the information released by the State Intellectual Property Office, a bearing-related invention patent submitted by the National Bearing Engineering Technology Research Center Co., Ltd. under the Wafangdian Bearing Group was officially disclosed. The patent name is "Integrated ball-column combination bearing and its assembly method", the publication number is CN120212157A, and the application time is January 2025.
The invention provides an improved integrated ball-column combination bearing structure and its assembly scheme. Its main components include a bearing housing, a spindle component, a rolling element, a steel ball, a ball-loading channel, and a plug for sealing. Specifically, the housing is sleeved on the outside of the shaft body, and two rows of fully loaded rolling elements are arranged between the two rows. A row of steel balls is also arranged between the two rows of rolling elements as an auxiliary bearing unit. In addition, a special ball-loading hole is designed inside the shaft for the installation of steel balls, and the fixing and sealing are achieved through the plug.
The core innovation of this technology lies in solving the large cumulative error existing in the traditional assembly method and the axial displacement problem that may occur during the operation of the bearing. By optimizing the structural layout and assembly sequence, the new solution effectively improves the operating accuracy and dynamic stability of bearings in practical applications, and is particularly suitable for industrial scenarios that require high operating stability.
The release of this patent reflects my country's continued investment and progress in the research and development of high-end bearing technology, and is expected to promote further improvements in the performance and quality of domestic bearing products, and help related industries achieve technological upgrades and market expansion.
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