Ключевые слова: area, assembly, assortment, axis, bearings, billet, closed type, commercial, cone, connecting rollers, cylinder, factory, finished, gears, heavy, heavy industry, industry, inside, large, loads, many, massive, metal, metal products, open, open type, parts, press, products, rings, rolled, roller, rolling, rotation, round, shaft, shape, shiny, small, smooth, steel, surface, swing, top view, unfolded, various sizes, washer, workshop,