Rotary blade assembly that can be used in tile-cutting machines

A rotary blade assembly for use in tile-cutting machines, having an annular blade (1) mounted on a bearing (2) comprising an inner race (21), and outer race (22) and ball bearings (23) arranged between both races, a first side of the outer race (22) comprising a perimeter projection (24) that forms a first side stop for mounting the annular blade (1) on the bearing, the rotary blade assembly comprising:

• a securing ring (3) of the annular blade (1) mounted on a second side of the outer race (22) of the bearing, secured to said outer race (22) and that forms a second stop for mounting the annular blade (1);
• wherein the bearing and/or the securing ring comprise on a contact surface with the annular blade projections or recesses (31, 25, 26) which, in a mounting position of the assembly, are coupled to complementary recesses or projections (11, 12) defined in a corresponding contact surface of the annular blade, and prevent relative rotation of the annular blade (1) with respect to the securing ring (3) and the outer race (22) of the bearing (2).