A handheld band saw includes a saw blade, a housing having a deck surrounding the saw blade, and a handle coupled to the housing and configured to be grasped by a user during a cutting operation. The deck includes a mounting hub extending from the deck. A motor is supported by the housing for driving a drive wheel spindle. The handheld band saw further includes a drive wheel assembly including a drive wheel driven by the drive wheel spindle and a driven wheel driven by the drive wheel via the saw blade. A bearing supports the drive wheel for rotation on the mounting hub. The mounting hub includes an aperture through which the drive wheel spindle extends.

A band saw including a housing defining a longitudinal axis, a motor, a battery pack removably coupled to a central portion of the housing, a drive wheel assembly positioned within a deck portion of the housing, an opening defined within the deck portion, an endless saw blade, and a rear handle having a curvilinear shape with a first handle end coupled to the central portion and a second handle end adjacent to the deck portion. The rear handle defines a curved path extending between a first end point at the first handle end and a second end point at the second handle end. A first tangent line is tangent to the curved path at the first end point and extends parallel to the longitudinal axis. A second tangent line is tangent to the curved path at the second end point and extends perpendicular to the longitudinal axis.

A band saw including a housing, a motor, a drive pulley configured to receive torque from the motor, and a plurality of driven pulleys rotatably coupled to a plate, in which the plate is coupled to the housing for sliding movement. The band saw further includes a cavity within the housing and located between the drive pulley and the plurality of driven pulleys and an endless saw blade wrapped around the drive pulley and the plurality of driven pulleys. A first of the driven pulleys is rotatable about a first axis oriented perpendicular to the plate. A second of the driven pulleys is rotatable about a second axis that is obliquely oriented relative to the plate to impart a twisting movement to the saw blade about an oblong path defined by the saw blade, prior to the saw blade passing through the cavity.

A band saw includes a housing having a handle configured to be grasped by a user during a cutting operation, a motor supported by the housing, and a drive wheel assembly rotationally driven by the motor. The drive wheel assembly has a drive wheel and a driven wheel. The band saw further includes an opening defined within the housing and located between the drive wheel and the driven wheel, an endless saw blade driven by the drive wheel assembly and configured to pass through the opening to cut a workpiece during the cutting operation, and a transmission assembly. The transmission assembly has an input member for receiving torque from the motor and an output member for transmitting torque to the drive wheel about a drive wheel axis. The transmission assembly includes at least one cycloidal gear stage.

A band saw includes a housing, a motor, a drive pulley configured to receive torque from the motor, causing the drive pulley to rotate, and a plurality of driven pulleys rotatably coupled to a plate that is coupled to the housing for sliding movement. The band saw further includes a cavity within the housing and located between the drive pulley and the plurality of driven pulleys and an endless saw blade wrapped around the drive pulley and the plurality of driven pulleys. The endless saw blade passes through the cavity. Moreover, the band saw includes a guide roller set coupled to the housing and configured to support the endless saw blade as the endless saw blade passes through the cavity. The plurality of driven pulleys gradually impart a twisting movement on the endless saw blade prior to the endless saw blade passing though the cavity.

A handheld band saw includes a housing assembly including a battery pack mounting portion for mounting a battery pack, a rotating wheel assembly at least partially disposed in the housing assembly and including a first rotating wheel and a second rotating wheel, where the first rotating wheel and the second rotating wheel are configured to be substantially symmetrical about a midplane, an electric motor disposed in the housing assembly and capable of driving one of the first rotating wheel and the second rotating wheel to rotate, a fan which is capable of generating at least one airflow in the housing assembly, and a control circuit board disposed in the housing assembly.

A band saw machine includes a first wheel and a second wheel arranged lower than the first wheel, the first wheel and the second wheel being configured to apply a tension to a band saw blade for tracking, a first supply unit arranged between a lowermost end of the second wheel and a workpiece cutting position along a travelling direction from the second wheel toward the first wheel in a rotary travel path of the band saw blade and configured to spray a cutting fluid in a mist or to drop the cutting fluid onto a tooth part of the band saw blade, and a second supply unit arranged between the workpiece cutting position to the second wheel and configured to pour or spray the cutting fluid or a fluid for cooling over the band saw blade.

A ribbon saw with a double security system is provided that includes a cutting ribbon (3), vertically installed between an upper part (1a) and a lower part (1b) with driving mechanism and control electronics. The control electronics include a first artificial vision security system, with a camera (5) and a second magnetic artificial vision security system, with an inductive sensor or metal detector (6) installed on the table (4), in front of the cutting ribbon (3). The security system is connected to one or two braking systems (14,15) based on a disc (14) and a pneumatic clamp (15) that stops the mechanism of pulleys (12a, 12b) of the ribbon (3), when it detects the color and the metallic or ferrous material of the gloves that the operator wears.

A saw-band quick replacement mechanism for a bandsaw machine includes an immovable rack, a sliding seat, a support member, and a control device. The immovable rack defines a lift space extending along a first direction. The sliding seat is accommodated in the lift space and configured to move upward and downward. The sliding seat has a bottom formed with a first incline. The support member has a second incline configured to abut against the first incline. The control device includes an eccentric member and a handle. The handle is used to switch the eccentric member between a first position and a second position. In the first position, the support member props up the sliding seat. When being switched from the first position to the second position, the eccentric member makes the support member to move along a second direction perpendicular to the first direction, so the sliding seat moves downward.