Bearing machining cutting tool convenient to install

The utility model relates to the technical field of cutter instruments, in particular to a cutting tool convenient to install for bearing machining, which comprises a tool body, the tool body comprises a tool holder and a tool bit, an external bolt is welded and fixed at the bottom end of the tool holder, and an inner bolt matched with the external bolt in size is arranged in the external bolt. Abearing and a lantern ring are further arranged between the external connection bolt and the inner bolt, an inner groove is formed in the external connection bolt, a rotary disc is arranged in the inner groove, the external connection bolt is connected with the inner bolt through threads, the inner bolt is connected with the lantern ring through the bearing, a clamping rod is arranged on the innerside of the lantern ring, and an anti-skid gasket is arranged on the side, close to the lantern ring, of the clamping rod. According to the utility model, the three tool bits are additionally arranged on the tool body and can