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Central double-cutting Disc Cutter

Central double-cutting Disc Cutter

An integrally formed double-edge cutter ring is fixed onto a single main shaft. The two cutting edges are separated by an annular groove in the middle. As a single cutter ring, the two edges cannot rotate independently and operate in synchronous rotation. The structure is compact, with moderate lateral stability and weak torsional resistance. It is primarily used in the middle and transition zones of the cutterhead, rather than serving as the center cutter. II. Main Applications Positioned between single-edge disc cutters and center double disc cutters, it crushes two grooves simultaneously, increasing the spacing between rock-breaking grooves. Arranged in the outer ring of the center cutters and transition zones to assist in groove widening and reduce the load on single-edge disc cutters. Suitable for rock formations with medium hardness and abundant joints, accelerating the coalescence of cracks. III. Advantages (1) It creates wider rock-breaking grooves. Under the same thrust, it spalls larger rock blocks, resulting in higher excavation efficiency compared to single-edge cutters. (2) It features good overall rigidity, and its assembly and disassembly are simpler than those of double disc cutters.

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