In a series of reduction gears including a parallel shaft reduction gear and an orthogonal shaft reduction gear, the parallel shaft reduction gear includes a motor, a parallel shaft reducer, and a first joint unit, and the first joint unit includes a first joint casing which is connected to a motor casing and a parallel shaft reducer casing, and a joint shaft which is connected to a motor shaft and the input shaft of the parallel shaft reducer. The orthogonal shaft reduction gear includes the motor and the parallel shaft reducer which are used in common with the parallel shaft reduction gear, a second joint unit in which a portion or all portions are used in common with the first joint unit, and an orthogonal reducer, and the motor, the second joint unit, the orthogonal reducer, and the parallel shaft reducer are connected to one another in this order.

In a series of reduction gears including a parallel shaft reduction gear and an orthogonal shaft reduction gear, the parallel shaft reduction gear includes a motor, a parallel shaft reducer, and a first joint unit, and the first joint unit includes a first joint casing which is connected to a motor casing and a parallel shaft reducer casing, and a joint shaft which is connected to a motor shaft and the input shaft of the parallel shaft reducer. The orthogonal shaft reduction gear includes the motor and the parallel shaft reducer which are used in common with the parallel shaft reduction gear, a second joint unit in which a portion or all portions are used in common with the first joint unit, and an orthogonal reducer, and the motor, the second joint unit, the orthogonal reducer, and the parallel shaft reducer are connected to one another in this order.

A line of vehicle transmissions is provided. The vehicle line includes a first multi-stage gear train assembly with at least two stages, a second multi-stage gear train assembly with at least three stages, and a housing including a first section removably attached to a second section. The second housing section is configured to receive the first and second multi-stage gear train assemblies in different product arrangements.

In a standard gear unit, which, in a first variant, is implemented with an output-side bearing and an outgoing shaft, and which, in a second variant, is able to be implemented with an intermediate flange inserted at the bearing position of the output-side bearing, the intermediate flange is formed such that, with an associated, differently formed outgoing shaft, a robot interface or flange block interface is able to be formed on the output side.

A casing includes an input-side casing part housing an input shaft and an output-side casing part housing an output shaft. In regard to a dimension in an axial direction of the output shaft, the dimension of the input-side casing part is smaller than the dimension of the output-side casing part. The output-side casing part includes an output-side bottom surface that serves as an installation surface when the casing is vertically installed; the output-side bottom surface includes mounting portions for vertical installation near four corners thereof; the input-side casing part includes an input-side back surface that serves as an installation surface when the casing is horizontally installed; the output-side casing part includes an output-side back surface that serves as an installation surface when the casing is horizontally installed; and mounting portions for horizontal installation are provided near four corners of the output-side back surface and on the input-side back surface.

A gearbox for mating either a hydraulic motor or a pneumatic motor to a clamshell lathe, or the like, includes a lower frame member forming a gear housing with an upper frame member as a removable cover. When the cover is removed, an input drive gear and an associated first driven gear can be readily removed and replaced to alter the gear ratio afforded by the gearbox to optimize the output torque when either the hydraulic motor or the pneumatic motor is the power source.

A modular multi-engine system having a plurality of engines and a plurality of gear units each gear unit having at least one rotatable member and a drive shaft being driven by one of the plurality of engines, where at least one of the gear units is a main gear and the other peripheral gear unit(s). Each rotatable member of each gear unit engages at least one other rotatable member of an adjacent gear unit such as to ultimately transfer torque from all the engines operable in said modular multiengine system to an output drive shaft connected to said main gear unit. The rotatable member of at least one of the peripheral gear units is located at a different height than at least one other cogwheel of another gear unit. The main gear unit includes an upper rotatable member and a lower rotatable member coaxially connected being operatively associated via at least one transmission unit configured and located such as to transfer torque from the upper or lower rotatable member to the other lower or upper rotatable member, respectively.

A modular multi-engine system having a plurality of engines and a plurality of gear units each gear unit having at least one rotatable member and a drive shaft being driven by one of the plurality of engines, where at least one of the gear units is a main gear and the other peripheral gear unit(s). Each rotatable member of each gear unit engages at least one other rotatable member of an adjacent gear unit such as to ultimately transfer torque from all the engines operable in said modular multiengine system to an output drive shaft connected to said main gear unit. The rotatable member of at least one of the peripheral gear units is located at a different height than at least one other cogwheel of another gear unit. The main gear unit includes an upper rotatable member and a lower rotatable member coaxially connected being operatively associated via at least one transmission unit configured and located such as to transfer torque from the upper or lower rotatable member to the other lower or upper rotatable member, respectively.

A ball screw device includes a plurality of ball screw devices. In one ball screw device, a recirculation member is larger than the recirculation member in another ball screw device in terms of one mounting dimension of two mounting dimensions selected from a circumferential length of a part at a side of a pick-up opening portion in each pick-up portion, a circumferential length of a part at a side opposite to the pick-up opening portion in each pick-up portion, a circumferential length of a connection passage portion and an axial length of the connection passage portion, and the recirculation member is smaller than the recirculation member in the other ball screw device in terms of another mounting dimension of the two mounting dimensions, the other ball screw device being different in a diameter of a screw shaft from the one ball screw device.

A modular gear transmission and associated systems. The modular gear transmission has an assembled configuration, and the modular gear transmission includes a first transmission body and a first transmission gear set. The first transmission gear set includes a first protruding gear, a first intermediate gear set including at least one intermediate transmission gear, and a first transmission socket. The first transmission body is configured so that, when the modular gear transmission is in the assembled configuration, the first transmission body engages the first transmission gear set to hold the first transmission gear set in a rotatable configuration. The first protruding gear is configured so that, when the modular gear transmission is in the assembled configuration, the first protruding gear protrudes from the first transmission body and is rotatably engaged with the first intermediate gear set, the first protruding gear configured to rotate around a first referential axis of rotation.