Abstract: A reamer (1) for underground passageways, comprising: a support housing (3) and a plurality of radially extending cutting wings (11); a plurality of ring segments (13), wherein each ring segment (13) includes an arcuate ring portion (15), wherein the plurality of ring segments (13) are assembled to form a stabilization ring (17) bridging radial outer edges (12) of the plurality of cutting wings (11), wherein the stabilization ring (17) is fastened to at least one of the cutting wings (11) to resist radial movement of the reamer (1).

Abstract: A reamer (1) for underground passageways, comprising: a support housing (3) and a plurality of radially extending cutting wings (11); a plurality of ring segments (13), wherein each ring segment (13) includes an arcuate ring portion (15), wherein the plurality of ring segments (13) are assembled to form a stabilization ring (17) bridging radial outer edges (12) of the plurality of cutting wings (11), wherein the stabilization ring (17) is fastened to at least one of the cutting wings (11) to resist radial movement of the reamer (1).

Abstract: A reamer for underground passageways made, for instance, for the installation of cables or pipelines to distribute services in a reticulated network. It includes a support housing having plural integral pairs of spaced-apart laterally extending support wings, wherein between each pair of support wing there is a longitudinally extending slot to receive a laterally extending cutting wing such that each cutting wing is captured between a respective pair of support wings. A stabilization ring comprising a circular sleeve supported by plural radial support pillars which extend from a central collar. Wherein, the cutting wings engage with the support housing to resist rearward longitudinal movement, with the support wings to resist torsional forces, and with the circular sleeve of the stabilization ring to resist radial movement.

Abstract: A reamer for underground passageways made, for instance, for the installation of cables or pipelines to distribute services in a reticulated network. It includes a support housing having plural integral pairs of spaced-apart laterally extending support wings, wherein between each pair of support wing there is a longitudinally extending slot to receive a laterally extending cutting wing such that each cutting wing is captured between a respective pair of support wings. A stabilization ring comprising a circular sleeve supported by plural radial support pillars which extend from a central collar. Wherein, the cutting wings engage with the support housing to resist rearward longitudinal movement, with the support wings to resist torsional forces, and with the circular sleeve of the stabilization ring to resist radial movement.