A single use integrated disposable rotational speed reduction assembly having a shaft assembly, a housing, an output assembly, and a plurality of planetary gears each having a plurality of gear teeth. The shaft assembly is configured to cause rotation of the planetary gears with a sun gear. The rotation of the planetary gears is configured to cause rotation of an output shaft, with a reduction of rotational speed relative to the rotation of the shaft assembly. One or more gear components or spacers can be configured to fail after a predetermined number of use cycles.

The present invention provides a lathe having a speeder device to increase the speed of a workpiece to be worked on by the lathe as compared to the speed of a workpiece to be worked on by the lathe without the use of the speeder device. The speeder device includes a torque arm, a means for stopping rotation of the torque arm, a planetary gearset assembly, an output spindle assembly, and a collet assembly. The means for stopping rotation of the torque rod is secured to a first end of the torque rod and the planetary gearset assembly is operatively connected to a second end of the torque rod. The output assembly is operatively connected to the planetary gear assembly, and the collet assembly holds the workpiece and is operatively connected to the spindle assembly.

A clamping unit, in particular for use in a machining center, or a turning or milling center, wherein the clamping unit comprises an external housing (12), preferably having a cylindrical basic design, an internal housing (15) accommodated in the external housing (12), and an internal cylinder (11) that is retained in the internal housing (15) such that it can be displaced in a vertical adjustment direction A when in the operating state, which is designed for transferring a pressure or tensile force for clamping purposes, wherein the internal housing (15) is supported in the external housing (12) by means of springs (13, 14), and is supported with respect to the external housing (12) such that it can be displaced in the adjustment direction A, and thus forms a spring force storage unit (21), and wherein an electric motor (16) is disposed inside the clamping unit, integrated therein, preferably encompassed by the external housing (12), furthermore, preferably accommodated inside the internal housing (15), in order to apply a force in the adjustment direction A to the internal cylinder (11) via drive means (17-20) disposed therein.

A power tool is provided which includes a housing assembly; a motor assembly disposed in the housing assembly and having an output shaft; a trigger assembly coupled to the housing assembly and configured for use in actuating the motor assembly; a spindle; and a transmission assembly transmitting rotary power between the motor assembly and the spindle. The transmission assembly comprises a star compound gear train.

A router includes a motor assembly that is arranged and configured to hold a router tool and to impart rotation to the router tool and a frame that is fixed in size and that is configured to house the motor assembly.

The durability of a reduction mechanism is improved. An impact wrench includes a brushless motor, a sun gear rotatable by the brushless motor, a planetary gear meshing with the sun gear, an internal gear meshing with the planetary gear and having a first recess on an outer circumference, a gear case holding the internal gear and having a second recess on an inner circumference, a spindle holding the planetary gear, and a pin disposed in the first recess and in the second recess.

The machine spindle arrangement (22) according to the invention forms a unit with a motor (19) as central element. At one side of the motor (19) a spindle neck (35) with a spindle (32) is flanged that is directly driven by the rotor (28) of the motor (19). The spindle (32) is a so-called null spindle that can be replaced without readjustment with all bearings and other wear parts due to the present exactly adjusted positioning surface (39) that abuts against an axially properly defined bearing contact surface (38). At the backside of the motor (19) facing away from the spindle (32), a tool releasing device (20) and an angle adjustment transmission (21) is arranged that serves to rotate a present traverse feed shaft (42) relative to the spindle (32). The traverse feed shaft (42) serves to actuate an adjustment device at the tool (15).

The present invention provides a lathe having a speeder device to increase the speed of a workpiece to be worked on by the lathe as compared to the speed of a workpiece to be worked on by the lathe without the use of the speeder device. The speeder device includes a torque arm, a means for stopping rotation of the torque arm, a planetary gearset assembly, an output spindle assembly, and a collet assembly. The means for stopping rotation of the torque rod is secured to a first end of the torque rod and the planetary gearset assembly is operatively connected to a second end of the torque rod. The output assembly is operatively connected to the planetary gear assembly, and the collet assembly holds the workpiece and is operatively connected to the spindle assembly.

A single use integrated disposable rotational speed reduction assembly having a shaft assembly, a housing, an output assembly, and a plurality of planetary gears each having a plurality of gear teeth. The shaft assembly is configured to cause rotation of the planetary gears with a sun gear. The rotation of the planetary gears is configured to cause rotation of an output shaft, with a reduction of rotational speed relative to the rotation of the shaft assembly. One or more gear components or spacers can be configured to fail after a predetermined number of use cycles.

A power tool includes a motor, an output shaft and a gearbox assembly. The output shaft outputs torque when driven by the motor to rotate around a first axis. The gearbox assembly transmits power between the motor and the output shaft. The gearbox assembly includes a first case and a second case. The first case and the second case are configured to be coupled to each other to form an accommodating cavity. The gearbox assembly further includes a ring gear, a planet gear, a sun gear, and a front ring gear. The ring gear is rotatably disposed in the accommodating cavity. The planet gear is engaged with the ring gear. The sun gear is engaged with the planet gear.