Methods and apparatus for movable machining tools, including for wall saws

A concrete saw comprising a carriage for moving the saw along a surface, a single off-center gear for engaging a rack on a track, wherein the single gear extends from an underside of the carriage.

33-36. (canceled)

A saw having a gearbox including an input to the gearbox and an output from the gearbox, wherein the output includes a drive shaft for cutting blade, and the gearbox includes at least one gear within the gearbox turning on an axis and having a gear width in an axial direction, and at least one bearing supporting the gear within the width of the gear and wherein the bearing has a bearing width in the axial direction less than the gear width.

A wall saw comprising:

• a saw motor and a saw arm wherein the saw motor can be used to drive a saw blade and the saw arm is configured to support a saw blade;
• an engagement assembly for receiving a blade flange assembly, the engagement assembly including a plurality of alignment elements for aligning with at least one alignment element on a blade flange assembly, wherein the plurality of alignment elements are spaced apart from each other.

A wall saw comprising:

• a carriage for moving along a track;
• a blade drive motor;
• a blade drive shaft for accepting and supporting a saw blade flange wherein the blade drive shaft has a non-circular portion for receiving a blade flange.

A wall saw having a carriage for moving along a track wherein the carriage includes a lateral adjustment assembly and wherein the lateral adjustment assembly includes an eccentric shaft.

A wall saw comprising:

• a carriage for moving along a track;
• a blade drive motor;
• a gear for driving a blade drive shaft wherein the gear has a non-circular portion for driving the blade drive shaft.