Rotary cutting saw having abrasive segments in which wear-resistant grains are regularly arranged

A rotary cutting saw, comprising:

• a base disk;
• and
• a plurality of abrasive segments which are fixed to an outer circumferential surface of said base disk and are spaced apart from each other in a circumferential direction of said base disk, each of said abrasive segments having a side surface which constitutes a portion of an axial end surface of said rotary cutting saw;
• wherein said base disk has a plurality of slits which are formed in said outer circumferential surface of said base disk and are located between adjacent ones of said abrasive segments in said circumferential direction, each of said plurality of slits extending inwardly in a radial direction of said base disk from said outer circumferential surface of said base disk,
• wherein each of said abrasive segments includes abrasive grains and wear-resistant grains each of which has a size substantially equal to a size of each of said abrasive grains,
• wherein said wear-resistant grains are exposed on said side surface and are regularly arranged on said side surface;
• and wherein said wear-resistant grains are equally spaced apart from each other by a predetermined first distance as viewed in a rotary direction of said rotary cutting saw, and where said wear-resistance grains are equally spaced apart from each other by a predetermined second distance as viewed in a radial direction of said rotary cutting saw.