Hard disk drive (HDD) components for personal computers and related IT products demand high precision during the manufacturing process. Requirements for precision and greater accuracy carry over into components of both advanced and general-purpose machinery for a variety of industries. Conventionally, a general-purpose NC lathe is utilized in high-precision processing of general-purpose components by grinding a finish after cutting. However, an NC lathe machining center, or composition processor, that is capable of providing finished-grade work during the cutting process is anticipated by manufacturing systems that experience a short-term cycle of product design, or where there are significant changes in production quantities. This paper introduces the super precision cylindrical roller bearings that are developed especially for main spindles with high-rigidity and high-load capacity aiming at high precision of these general-purpose types of multi-function machine tools.
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