The grinding wheel can effectively dissipate the heat generated in the grinding layer during grinding, improve the grinding performance, and also improve the finish on the surface to be ground. The grinding wheel includes a large number of abrasive particle attachments having a desired size and shape, and each abrasive particle attachment has a large number of abrasive particles on its surface. These abrasive particle attachments are to be installed in a closely stacked relationship in a radial direction. On the outer circumference of the ring, the abrasive layer formed by laminating the abrasive particle attachments is provided with different density portions distributed at a desired interval in the circumferential direction to improve the grinding function at the higher laminated density portion of the abrasive particle attachments. Soft grinding is performed at the lower-density laminated portion of the abrasive particle attachment, and it is possible to discharge debris and improve heat dissipation, thereby improving the entire grinding function.
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