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Thomson's 60 CaseĀ® LinearRaceĀ® shafts are precision ground to exacting standards for superior linear bearing performance and life. Case hardened to 60-65C. Stainless steel for corrosion resistance, is 440C with a hardness of 50-55C. Chrome plated steel for corrosion resistance. The ends are not plated. Roundness is 80 millionth of an inch. Surface finish 12 Ra micro inch.
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