Abstract: A sealing element for sealing a cylindrical inner surface of a first machine component and a cylindrical outer surface of a second machine component includes an inner ring, an outer ring arranged coaxially with respect to the inner ring, and a sealing gap, which is formed by an exterior lateral face of the inner ring and an interior lateral face of the outer ring. In an axial section through the common axis of the inner ring and the outer ring the sealing gap has a profile having an inlet section as a first end portion of the sealing gap having a first radius to the common axis; an outlet section as a second end portion of the sealing gap having a second radius to the common axis, wherein the second radius is smaller than the first radius; and a meander section, which adjoins the inlet section and which has a monotonically decreasing radius.

Abstract: A bearing unit for rotary anodes of x-ray tubes includes a shaft and a flange element to which a rotary anode can be attached, wherein: the bearing unit can be inserted into a cutout within the x-ray tube and locked in place; the shaft is mounted via a first bearing element and a further bearing element; the first bearing element and the further bearing element each consists of an angular ball bearing mounted on the shaft and having an inner ring and an outer ring; and at least one spacer element is mounted between the inner rings and/or the outer rings of the first and the second bearing element.

Abstract: A sealing element for sealing a cylindrical inner surface of a first machine component and a cylindrical outer surface of a second machine component includes an inner ring, an additional ring arranged coaxially to the inner ring, the additional ring being connected to a part of an outside lateral face of the inner ring, an outer ring arranged coaxially to the inner ring, and a sealing gap, which is formed by an external lateral face of the inner ring, an internal lateral face of the outer ring and an external lateral face and an end face of the additional ring and which in axial section through the common axis of the inner ring, the outer ring and the additional ring has a meandering profile.

Abstract: A sealing element for sealing a cylindrical inner surface of a first machine component and a cylindrical outer surface of a second machine component includes an inner ring, an outer ring arranged coaxially with respect to the inner ring, and a sealing gap, which is formed by an exterior lateral face of the inner ring and an interior lateral face of the outer ring. In an axial section through the common axis of the inner ring and the outer ring the sealing gap has a profile having an inlet section as a first end portion of the sealing gap having a first radius to the common axis; an outlet section as a second end portion of the sealing gap having a second radius to the common axis, wherein the second radius is smaller than the first radius; and a meander section, which adjoins the inlet section and which has a monotonically decreasing radius.

Abstract: A sealing element for sealing a cylindrical inner surface of a first machine component and a cylindrical outer surface of a second machine component includes an inner ring, an additional ring arranged coaxially to the inner ring, the additional ring being connected to a part of an outside lateral face of the inner ring, an outer ring arranged coaxially to the inner ring, and a sealing gap, which is formed by an external lateral face of the inner ring, an internal lateral face of the outer ring and an external lateral face and an end face of the additional ring and which in axial section through the common axis of the inner ring, the outer ring and the additional ring has a meandering profile.

Abstract: A bearing unit for rotary anodes of x-ray tubes includes a shaft and a flange element to which a rotary anode can be attached, wherein: the bearing unit can be inserted into a cutout within the x-ray tube and locked in place; the shaft is mounted via a first bearing element and a further bearing element; the first bearing element and the further bearing element each consists of an angular ball bearing mounted on the shaft and having an inner ring and an outer ring; and at least one spacer element is mounted between the inner rings and/or the outer rings of the first and the second bearing element.

Abstract: The invention relates to a spindle, in particular a machine spindle, which is used to machine a work piece by means of a tool which is applied to the spindle, comprising an axially displaceable tension rod (30) which is used to secure the tool to the spindle, and a drive shaft (4) which is driven, in particular, by the motor of the spindle. The drive shaft of the spindle can be connected via a coupling device either to the tension rod (30) for axially displacing the tension rod (30) in order to change tools or to the tool in order to machine the work piece. The tension rod (30) can be axially displaced in a work shaft (1) which is embodied as a hollow shaft. The work shaft (1) can be arrested in relation to the housing (2) of the spindle in a first coupling position in order to axially displace the tension rod (30) within the work shaft (1) by the drive shaft (4). The angle position of the work shaft (1) and the drive shaft (4) can be freely selected in the first coupling position.

Abstract: The invention relates to a freewheel insert element and a freewheel comprising a freewheel insert element, wherein the freewheel insert element comprises a plurality of clamping bodies (1, 11), each clamping body (1, 11) having an outer contact surface (1a, 11a) for forming a frictional contact with an outer clamping track (3) and an inner contact surface (1b, 11b) for forming a frictional contact with an inner clamping track (4), and a plurality of intermediate elements (2, 2a, 2b) are provided which have a higher elasticity than the clamping bodies (1, 11) and are arranged between adjacent clamping bodies (1, 11).

Abstract: A torsional vibration damper for coupling two machine parts disposed coaxially to each other, in particular for coupling a cylindrical inner surface of a first machine part to a cylindrical outer surface of a second machine part, has a plurality of clamping bodies and a plurality of intermediate elements. The intermediate elements have higher elasticity than the clamping bodies and are disposed between adjoining clamping bodies.

Abstract: The invention relates to a spindle (1) for a machine tool, in particular a motor spindle, with a housing (2) for accommodating an electric motor (3) and a shaft (4) that can be driven by the latter, and with a tool holder (5) for a tool (6) that can be electrically connected, wherein a draw rod (7) is provided for actuating the tool holder (5) of the spindle (1) and wherein the draw rod (7) has a current conductor (8) for supplying current to a held tool (6).

Abstract: A bearing element 7 has rolling bodies 3, having an inner raceway, an outer raceway and adjacent rolling bodies 3 which are arranged rotatably between the inner and the outer raceways via a cage 4 for holding the rolling bodies 3. At least one porous element 6, 13, 16 is provided for accommodating lubricant for the bearing element 7.

Abstract: The invention relates to a spindle for a machine tool, in particular a motor spindle having a housing (2) for accommodating an electric motor (3) and a shaft (6) which can be driven by the latter, in particular having a tool holder for a tool for machining workpieces, wherein at least one data acquisition element (8) for recording operating and/or state data of the spindle is provided, and wherein the data acquisition element is in the form of a radio chip and can be read by radio using a read element (9).

Abstract: The invention relates to a bearing element with rolling bodies which are arranged in the peripheral direction between an inner ring and an outer ring disposed concentrically to the inner ring, particularly with a cage for holding the rolling bodies, the bearing element comprising porous elements along the peripheral direction in individual ring segments for receiving lubricant.

Abstract: The invention relates to a freewheel insert element and a freewheel comprising a freewheel insert element, wherein the freewheel insert element comprises a plurality of clamping bodies (1, 11), each clamping body (1, 11) having an outer contact surface (1a, 11a) for forming a frictional contact with an outer clamping track (3) and an inner contact surface (1b, 11b) for forming a frictional contact with an inner clamping track (4), and a plurality of intermediate elements (2, 2a, 2b) are provided which have a higher elasticity than the clamping bodies (1, 11) and are arranged between adjacent clamping bodies (1, 11).

Abstract: The invention relates to a bearing unit (1) for rotary anodes of X-ray tubes, with a shaft (2) and a flange element (3), to which a rotary anode can be attached, wherein the bearing unit (1) can be inserted into a cutout within the X-ray tube and locked there. The shaft (2) is held via a first and a second bearing element (4, 5), wherein the first bearing element (4) comprises an inner race (6) fitted on the shaft (2) and a separate outer ring (7). The second bearing element (5) comprises a roller bearing fitted on the shaft (2) with an inner ring (8) and an outer ring (9), wherein a spacer element (10) is fitted between the outer rings (7, 8) of the first and the second bearing element (4, 5).

Abstract: The invention relates to a free-wheel, particularly a clamping member free-wheel, comprising elements, especially an internal ring (1) and an external ring (2), which can be twisted relative to one another about a common axis, are arranged inside each other, and form a gap (4) inside which clamping elements, particularly clamping members (5), are disposed such that a frictional connection can be established to the facing external surfaces of the elements (1, 3) via clamping surfaces (6, 7) of the clamping members (5). The clamping members (5) are inserted into a clamping member cage (8) in order to be securely positioned. A circumferential band element (9) is provided which has recesses (10) for receiving the clamping members (5).

Abstract: The invention relates to a coupling device for establishing a couplable connection between two rotationally mounted machine parts, particularly a first shaft and a second shaft. To this end, the second shaft comprises a coupling ring that, on the inside, has tensioning bodies, which act against each another in pairs and which are arranged so they surround the shaft.

Abstract: The invention relates to a free-wheel, in particular a pinch roller free-wheel or a pinch body free-wheel, comprising relatively-rotating elements arranged one within the other on a common axis, which form a gap, in which pinch elements, in particular pinch rollers or pinch bodies, are arranged such that a friction connection can be produced with the facing outer surfaces of the elements, by means of the pinch surfaces, whereby the free-wheel outer rim is covered by a ring of fibre-reinforced plastic and the external diameter of the ring of fibre-reinforced plastic is about 1.3 to 1.8 times the diameter of the external clamping surface.

Abstract: A motor spindle includes a spindle shaft for receiving a tool. The spindle shaft is accommodated in the housing of the motor spindle in a fixed bearing and a loose bearing. The received tool enters into contact with the machined workpiece in a tool interface when the spindle shaft is driven and the tool interface is displaced in an axial direction of the spindle shaft when a workpiece is machined. A displacement sensor is provided on the spindle bearing in order to determine the axial displacement of the tool interface. There is also a motor spindle including a spindle shaft for receiving a tool. The spindle shaft is accommodated in the housing of the motor spindle in a fixed bearing and in a loose bearing with an axially displaceable bearing bushing. The tool enters into contact with the machined workpiece at the tool interface when the spindle shaft is driven, and an adjusting element which is used to adjust the axial displacement of the bearing bushing of the motor spindle is also provided.

Abstract: The invention relates to a spindle (9) for a machine tool, having a housing (12) to accommodate an electric motor (11) and a shaft (13) driven by the latter and having a tool holder for a tool (10) for machining workpieces, at least one data acquisition element (2) being provided to record operating and/or state data of the spindle (9), and at least one spindle-integrated data storage element (1) being provided to store the recorded data from the data acquisition element (2).