Abstract: A sugar cane harvester has a cutting mechanism which utilizes pairs of cutting disks and does not require synchronization of the cutting disks. Each of the cutting disks has a revolving cutter mounted on its circumference. The cutters are formed from saw-toothed, concatenated arcuate segments which are removably mounted on the cutting disks. The arcuate segments of each pair of cooperating cutting disks overlap slightly where the two disks meet and are slightly eccentrically arranged on the cutting disks such that the external boundary line of the circumference of the segments tapers off from a maximum to a minimum.