These types of oils are also referred to as "R and O" oils. Castrol Hyspin Spindle Oils are designed for use in all types of spindle bearings, including high-speed spindle bearings. The Castrol Hyspin™ Spindle Oil range is based upon highly refined mineral oil enhanced with rust and oxidation inhibitors and formulated especially for the lubrication of high speed and precision machine tool spindle bearings.
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