A cutter assembly and inline mount for a tunnel boring machine comprising: a cutter assembly comprising a shaft and a cutter ring disposed on a hub that is rotatably mounted to the shaft; an inline mounting assembly for mounting the cutter assembly onto the tunnel boring machine, the mounting assembly comprising a first mounting subassembly and a second mounting subassembly that is similar to the first mounting subassembly, wherein the first mounting subassembly comprises: a mounting plate having a body portion and a front end with inwardly extending first and second shaft supporting portions, the mounting plate having a channel extending from a back end of the mounting plate to the front end and sized to receive an end of the shaft, a first guide disposed on one side of the channel, and a second guide disposed on the other side of the channel, wherein the first guide and the second guide cooperatively define a back abutment surface and a front abutment surface; a wedge assembly comprising a first elongate attachment member that extends through an aperture in the first guide and a wedge that engages a distal end of the first elongate attachment member; a back support assembly comprising a clamp block that abuts the back abutment surface, a bridge block that abuts the front abutment surface, and a second elongate attachment member that extends through an aperture in the clamp block and an aperture in the bridge block; wherein a front end of the bridge block is configured to abut the shaft, and wherein the wedge is configured to slideably engage the first inwardly extending shaft supporting portion, and to slideably engage the shaft such that the shaft is clamped between the wedge and the second inwardly extending shaft supporting portion of the mounting plate. a cutter assembly comprising a shaft and a cutter ring disposed on a hub that is rotatably mounted to the shaft; an inline mounting assembly for mounting the cutter assembly onto the tunnel boring machine, the mounting assembly comprising a first mounting subassembly and a second mounting subassembly that is similar to the first mounting subassembly, wherein the first mounting subassembly comprises: a mounting plate having a body portion and a front end with inwardly extending first and second shaft supporting portions, the mounting plate having a channel extending from a back end of the mounting plate to the front end and sized to receive an end of the shaft, a first guide disposed on one side of the channel, and a second guide disposed on the other side of the channel, wherein the first guide and the second guide cooperatively define a back abutment surface and a front abutment surface; a wedge assembly comprising a first elongate attachment member that extends through an aperture in the first guide and a wedge that engages a distal end of the first elongate attachment member; a back support assembly comprising a clamp block that abuts the back abutment surface, a bridge block that abuts the front abutment surface, and a second elongate attachment member that extends through an aperture in the clamp block and an aperture in the bridge block; wherein a front end of the bridge block is configured to abut the shaft, and wherein the wedge is configured to slideably engage the first inwardly extending shaft supporting portion, and to slideably engage the shaft such that the shaft is clamped between the wedge and the second inwardly extending shaft supporting portion of the mounting plate. a mounting plate having a body portion and a front end with inwardly extending first and second shaft supporting portions, the mounting plate having a channel extending from a back end of the mounting plate to the front end and sized to receive an end of the shaft, a first guide disposed on one side of the channel, and a second guide disposed on the other side of the channel, wherein the first guide and the second guide cooperatively define a back abutment surface and a front abutment surface; a wedge assembly comprising a first elongate attachment member that extends through an aperture in the first guide and a wedge that engages a distal end of the first elongate attachment member; a back support assembly comprising a clamp block that abuts the back abutment surface, a bridge block that abuts the front abutment surface, and a second elongate attachment member that extends through an aperture in the clamp block and an aperture in the bridge block; wherein a front end of the bridge block is configured to abut the shaft, and wherein the wedge is configured to slideably engage the first inwardly extending shaft supporting portion, and to slideably engage the shaft such that the shaft is clamped between the wedge and the second inwardly extending shaft supporting portion of the mounting plate.