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Information × Registration Number 0226U001180, (0125U001616) , R & D reports Title Creation of experimental samples of rolling bearings with enhanced performance characteristics based on energy efficiency and durability criteria. popup.stage_title Розрахунки, конструкторські розробки та виготовлення зразків роликів та сепаратора. Head Haidamaka Anatolii V., д.т.н. Registration Date 21-01-2026 Organization National Technical University "Kharkiv Polytechnic Institute" popup.description1 Creation of experimental samples of rolling bearings with enhanced performance characteristics based on energy efficiency and durability criteria by improving the lubrication of the friction surfaces of the separator and rollers, as well as increasing the number of rollers. popup.description2 Within the reporting stage of the work in 2025, a set of design-technological, theoretical, and experimental studies was carried out, aimed at creating experimental samples of rolling bearings with improved operational characteristics in terms of energy efficiency and durability by enhancing the lubrication of the friction surfaces of a cage with an increased number of windows. Based on the conducted patent search of cage designs and casting molds, their designs were developed and patent applications were filed. A casting mold for experimental samples of polymer cages was designed and manufactured; the technology for producing high-quality polymer cage castings and preventing defects was developed. The designs of the fastening units for the forming cores and the ejection system of the casting in the mold were refined. Laboratory bench tests of the cage–bearing ring interface made it possible to select the design parameters of lubricant-retaining grooves (LRG), namely their width, depth, and number. Verification strength calculations of the polymer cage structure with an increased number of windows and the selected LRGs made it possible to refine the geometry of stress concentrators in the corners of the windows and on the supporting surfaces where the LRGs are located. The completed work relates to the improvement of the polymer cage design, on the basis of which experimental samples were prepared for the second stage of experimental studies of the operability of bearings of type N6-882726E2K1MU as part of railway wagon axle boxes on the factory test bench of PJSC «KhARP» Product Description popup.authors Serhii S. Dobrotvorskyi Mykola Y. Serhiienko Serhii V. Bobrytskyi Volodymyr V. Klitnoi Dmytro Y. Borodin Oleksandr I. Naumov Borys O. Aleksenko Andrii V. Hrabovskyi Yevheniia V. Basova Volodymyr V. Tatkov popup.nrat_date 2026-01-21 Close