A suspending member, such as a tether strap or the like, may by connected to improve convenience for an operator. The function of the suspending member shall be reliably performed by clearly notifying the user when the connecting part for connecting the suspending member is damaged. A ring-shaped notification member is incorporated in a connecting part for connecting the suspending member. The suspending member is inserted into both of a connecting hole in a connecting part and a notification member so as to be connected. When an end of a handle portion breaks due to long-term use, the notification member is pulled out such that the damage of the connecting part is notified.

A power tool includes a motor; an arbor attachment mechanism that includes a shaft configured to be driven by the motor about a spin axis. The arbor attachment mechanism is configured to hold a blade onto the shaft. The power tool includes a blade size limiter that is configured to prevent attachment of a blade with a radius greater than a predetermined size, and is configured to be connected to the arbor attachment mechanism independently of the attachment of the blade to the arbor attachment mechanism and such that the blade size limiter is at a distance from the spin axis of the shaft.

A power tool includes a motor; an arbor attachment mechanism that includes a shaft configured to be driven by the motor about a spin axis. The arbor attachment mechanism is configured to hold a blade onto the shaft. The power tool includes a blade size limiter that is configured to prevent attachment of a blade with a radius greater than a predetermined size, and is configured to be connected to the arbor attachment mechanism independently of the attachment of the blade to the arbor attachment mechanism and such that the blade size limiter is at a distance from the spin axis of the shaft.

A saw blade stabilizer is provided. The saw blade stabilizer includes a housing and a shaft at least partially within a cavity of the housing. A piston is connected to one end of the shaft. A mechanical wedge is connected to a second end of the shaft in the housing. A stabilizer contact element slideably receives a portion of the mechanical wedge. Movement of the piston slides the portion of the mechanical wedge within the stabilizer contact element and moves the stabilizer contact element in a first direction not in line with the movement of the piston.

A circular saw machine capable of suppressing a cutting-bending of a circular saw blade during cutting, and improving processing accuracy for a cutting surface of a workpiece, regardless of a size of a width of the workpiece. A circular saw machine has: a processing head capable of moving in a cutting direction and its opposite direction and having a circular saw blade capable of rotating; and a movable saw blade guide set provided to be movable in the cutting direction and the opposite direction on the processing head, for guiding to pinch a body part of the circular saw blade on a diameter direction inner side of a cutting region in the circular saw blade. The movable saw blade guide set is configured to move relatively with respect to the processing head in the opposite direction, in coordination with a movement in the cutting direction of said processing head.

A circular saw machine capable of suppressing a cutting-bending of a circular saw blade during cutting, and improving processing accuracy for a cutting surface of a workpiece, regardless of a size of a width of the workpiece. A circular saw machine has: a processing head capable of moving in a cutting direction and its opposite direction and having a circular saw blade capable of rotating; and a movable saw blade guide set provided to be movable in the cutting direction and the opposite direction on the processing head, for guiding to pinch a body part of the circular saw blade on a diameter direction inner side of a cutting region in the circular saw blade. The movable saw blade guide set is configured to move relatively with respect to the processing head in the opposite direction, in coordination with a movement in the cutting direction of said processing head.

A miter saw includes a base assembly and a saw unit pivotably coupled to the base assembly. The saw unit includes a motor for driving a saw blade about a rotational axis, a handle, a trigger coupled to the handle and moveable between a first position in which the motor is deactivated, and a second position in which the motor is activated to drive the saw blade, and a trigger lock pivotably coupled to the trigger for movement therewith to prevent movement of the trigger from the first position to the second position.

A miter saw includes a base assembly and a saw unit pivotably coupled to the base assembly. The saw unit includes a motor for driving a saw blade about a rotational axis, a handle, a trigger coupled to the handle and moveable between a first position in which the motor is deactivated, and a second position in which the motor is activated to drive the saw blade, and a trigger lock pivotably coupled to the trigger for movement therewith to prevent movement of the trigger from the first position to the second position.

A power tool assembly includes an arbor shaft configured to support a shaping device, a belt operably connected to the arbor shaft and configured to rotate the arbor shaft, a motor including a power shaft operably connected to the belt through a motor end pulley, and a positioning device operably connected to the motor, the positioning device configured to rotate the motor about a motor mounting axis of rotation which is offset from an axis of rotation of the motor end pulley, thereby modifying a tension of the belt.

A power tool assembly includes an arbor shaft configured to support a shaping device, a belt operably connected to the arbor shaft and configured to rotate the arbor shaft, a motor including a power shaft operably connected to the belt through a motor end pulley, and a positioning device operably connected to the motor, the positioning device configured to rotate the motor about a motor mounting axis of rotation which is offset from an axis of rotation of the motor end pulley, thereby modifying a tension of the belt.