Ключевые слова: background, ball, ball bearing, bearing, bearings, cage, chrome, circle, closeup, detail, engineering, equipment, friction, industrial, industry, isolated, isolated on white, machine, machinery, macro, mechanic, mechanical, metal, metallic, new, nobody, part, precision, pulley, ring, roller, rolling, round, selective focus, shaft, shiny, silver, spare, spin, steel, team work, technical, technology, they, tool, transportation, two, wheel, white, yellow,