requirements. NES uses a wide range of bearing materials to achieve success in your applicude 440C, Cronidur® 30, XD15NW, BG42, 52100, M50, M50 NiL, Pyrowear® 675, and superelastic NiTiNOL 60. Rolling element material varies from 52100, 440C, Silicon Nitride (ceramic), M50, and Cronidur® 30.
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