Bearings are key components of rotating mechanisms. Radial ball bearings (series 6000, 6200, 6300): for electric motors, gearboxes, pumps, fans. Tapered roller bearings (series 7000, 30000): for combined axial+radial loads — wheel hubs, gearboxes. Spherical roller bearings (series 22000, 23000): self-aligning, for vibration loads and misalignment — mining, conveyors. Accuracy classes: P0 (normal), P6, P5, P4 (precision). Lubrication: grease (sealed 2RS/ZZ), oil (open). Manufacturers: SKF, FAG/Schaeffler, NSK, NACHI, NTN, Timken, domestic (EPK, GPZ). Selection by catalog or L10 life calculation (operating hours). Production: Russia and import. 12-month warranty. Service maintenance. Commissioning and personnel training. Documentation: passport, operating manual, EAC conformity certificate. Supplies within Russia and for export. Spare parts in stock. Technical consultation on equipment selection. Performance calculation for customer's task. Delivery and turnkey installation possible.