A propeller shaft (1) that is a power transmission shaft has a shaft member (2) as a tubular body made of iron-based metal and a balance weight (3) made of iron-based metal and welded to an outer peripheral surface of this shaft member (2). At least a part of the balance weight (3) of the propeller shaft (1) is covered with a sacrificial metal coating (4) made of sacrificial corrosion prevention material that contains metal whose ionization tendency is higher than that of metal forming the shaft member (2). With this, it is possible to suppress local progression of corrosion at a periphery of the balance weight (3) and improve durability of the propeller shaft (1) .

The invention relates to a method and a set of balance weights for balancing a rotor particularly of a turbomachine, on which a plurality of balance weights, which are distributed over the periphery, can be arranged for balancing an imbalance. A set of balance weights, in particular plate-shaped weights, with a predetermined number of groups of balance weights, is used for balancing the rotor. Each of the balance weights of every group of balance weights has an identical weight that is assigned to this group and a shape assigned to this group, which differs in basic shape and/or thickness of the balance weights from the balance weights of the other groups.

The invention relates to a method and a set of balance weights for balancing a rotor particularly of a turbomachine, on which a plurality of balance weights, which are distributed over the periphery, can be arranged for balancing an imbalance. A set of balance weights, in particular plate-shaped weights, with a predetermined number of groups of balance weights, is used for balancing the rotor. Each of the balance weights of every group of balance weights has an identical weight that is assigned to this group and a shape assigned to this group, which differs in basic shape and/or thickness of the balance weights from the balance weights of the other groups.

A propeller shaft (1) that is a power transmission shaft has a shaft member (2) as a tubular body made of iron-based metal and a balance weight (3) made of iron-based metal and welded to an outer peripheral surface of this shaft member (2). At least a part of the balance weight (3) of the propeller shaft (1) is covered with a sacrificial metal coating (4) made of sacrificial corrosion prevention material that contains metal whose ionization tendency is higher than that of metal forming the shaft member (2). With this, it is possible to suppress local progression of corrosion at a periphery of the balance weight (3) and improve durability of the propeller shaft (1).

A rotation device capable of improving safety includes a plurality of screw holes that each extend along the radial direction of a rotation member and each has an opening on a surface of the rotation member; and a stopper for preventing a screw disposed inside the screw hole from protruding to the outside of the opening, without interfering with insertion of a tool, for turning the screw, into the screw hole.

An oscillating power tool with an electric motor is provided, including an armature shaft with an armature and a fan wheel, including an eccentric arranged on the armature shaft at one end thereof, a first balancing mass for balancing an unbalance of the eccentric and possibly an eccentric bearing, being arranged in the proximity of the eccentric or the eccentric bearing, respectively, however, at an axial distance, further including a second balancing mass for balancing a couple unbalance caused by the axial distance between the eccentric and the eccentric bearing, respectively, and the first balancing weight, wherein the second balancing mass is arranged on the armature shaft at the side facing away from the eccentric or the eccentric bearing. Also a method for balancing such an electric motor is provided.

An assembly for a hybrid drivetrain of a motor vehicle, having a first torque transmission device and a second torque transmission device connected thereto so as to transmit torque. The first torque transmission device is arranged to be axially spaced apart from the second torque transmission device and the second torque transmission device has a smaller radial extension than the first torque transmission device. An installation space for a drivetrain device is defined radially above the second torque transmission device such that said drivetrain device is delimited axially by the first torque transmission device. A spacer device is arranged between the two torque transmission devices in the torque transmission path for axial spacing and is designed such that an axially definable minimum spacing between the defined installation space and the first torque transmission device is maintained and has a balancing device for compensating for imbalance of the assembly.

A wheel-balancing weight mounts to a wheel with a flange. The weight includes a body and a clip. The body is stamped by a punch to define a pocket within which an attaching portion of the clip resides. The defined pocket has a planar base and opposing side walls generally perpendicular to the base. The body as stamped by the punch includes a pre-stake for each side wall external to the pocket and adjacent the side wall, and an undercut for each side wall within the pocket and generally located at a juncture of the side wall and the base.

Apparatus and a method for transporting and positioning of balancing weights connected together to form a chain of balancing weights is disclosed. A drive means comprises at least a transport wheel and/or a transport belt. The drive means has at least one cam to interface with a gap between two adjacent balancing weights of the chain of balancing weights. Furthermore a cutter may be provided for cutting of balancing weights from the chain.

The invention relates to a conveyor roller for conveyor systems for conveying containers, pallets, piece goods, and the like. The invention further relates to a method for producing and balancing, in particular dynamic balancing, such a conveyor roller. The conveyor roller comprises a roller body having a roller axle, the outside circumferential surface thereof being a contact surface for conveyed goods or being wrapped about by conveyed goods, and a head element (100), an insertion section (110) thereof being inserted into a hollow end of the roller body, wherein a groove (200) is formed on an end face (120) of the head element (100) facing away from the insertion section (110), in order to receive at least one balancing weight (301-304).