Abstract: A measuring system monitors a spindle. The measuring system includes a cylindrical housing which can be arranged in and mechanically firmly connected to a spindle housing. A carrier ring is arranged inside the cylindrical housing. Three sensors for measuring a radial displacement and three sensors for measuring an axial displacement of the spindle are distributed over a circumference of the carrier ring. The sensors are cast with the carrier ring.

Abstract: A measuring system monitors a spindle. The measuring system includes a cylindrical housing which can be arranged in and mechanically firmly connected to a spindle housing. A carrier ring is arranged inside the cylindrical housing. Three sensors for measuring a radial displacement and three sensors for measuring an axial displacement of the spindle are distributed over a circumference of the carrier ring. The sensors are cast with the carrier ring.

Abstract: A bearing arrangement including a rolling or sliding bearing that has an inner ring and an outer ring and at least one add-on part provided on the inner ring or on the outer ring, this add-on part being formed of a meltable or curable material and being attached with a positive fit to the inner ring or the outer ring by a generative manufacturing process.

Abstract: The invention relates to a passive repeater for forwarding radio signals from a first device having a radio interface to a second device having a radio interface, wherein the passive repeater is configured to forward radio signals between an interior of a housing, which has a housing wall acting as a radio barrier, and an exterior, through the housing wall, wherein the passive repeater has a first antenna and a second antenna for this purpose, which are connected to each other by a passive and galvanic coupling, and wherein the first antenna can be arranged in the interior and the second antenna can be arranged in the exterior, and the passive coupling can be carried out through an opening in the housing wall, and wherein the first antenna can be inserted into the interior from the exterior through the opening and/or the second antenna can be withdrawn from the interior to the exterior through the opening.

Abstract: The invention relates to a passive repeater for forwarding radio signals from a first device having a radio interface to a second device having a radio interface, wherein the passive repeater is configured to forward radio signals between an interior of a housing, which has a housing wall acting as a radio barrier, and an exterior, through the housing wall, wherein the passive repeater has a first antenna and a second antenna for this purpose, which are connected to each other by a passive and galvanic coupling, and wherein the first antenna can be arranged in the interior and the second antenna can be arranged in the exterior, and the passive coupling can be carried out through an opening in the housing wall, and wherein the first antenna can be inserted into the interior from the exterior through the opening and/or the second antenna can be withdrawn from the interior to the exterior through the opening.

Abstract: A bearing arrangement including a rolling or sliding bearing that has an inner ring and an outer ring and at least one add-on part provided on the inner ring or on the outer ring, this add-on part being formed of a meltable or curable material and being attached with a positive fit to the inner ring or the outer ring by a generative manufacturing process.

Abstract: A bottom bracket unit including a bottom bracket axle (1), at least one bearing (2, 3) that receives the bottom bracket axle (1) in a rotatable manner, and an optical detection unit (11), by which a rotational speed of the bottom bracket axle (1) can be detected. The optical detection unit (11) measures at least one signaling device (12) that is rotationally fixed to the bottom bracket axle (1). The aim of the invention is to provide a bottom bracket unit that can also detect the rotational direction of the bottom bracket axle in addition to the rotational speed of the axle. This is achieved in that the optical detection unit (11) has two optical sensors (17), with one of these sensors (17) providing a signal that is phase-shifted with respect to the other sensor (24) having a fixed phase difference, in particular with a phase difference of 90°.

Abstract: A torque measuring device, in particular suitable for a bottom bracket (1), including an inner shaft (2) provided as a drive shaft, and a hollow shaft (3) provided as a driven shaft, which hollow shaft is connected to the inner shaft (2) and surrounds the same coaxially. The hollow shaft (3) has a direct coating that forms a strain gauge (5) for the torque measurement.

Abstract: A linear guide with a guide carriage longitudinally movably arranged on a guide rail, which is preferably U-shaped and a braking device effectively arranged between the guide rail and the guide carriage. An actuator for actuating the braking device is provided and the actuator has an electro-active polymer effectively arranged in the longitudinal axis of the linear guide which engages around the guide rail for actuating the braking device.

Abstract: A bottom bracket unit including a bottom bracket axle (1), at least one bearing (2, 3) that receives the bottom bracket axle (1) in a rotatable manner, and an optical detection unit (11), by which a rotational speed of the bottom bracket axle (1) can be detected. The optical detection unit (11) measures at least one signaling device (12) that is rotationally fixed to the bottom bracket axle (1). The aim of the invention is to provide a bottom bracket unit that can also detect the rotational direction of the bottom bracket axle in addition to the rotational speed of the axle. This is achieved in that the optical detection unit (11) has two optical sensors (17), with one of these sensors (17) providing a signal that is phase-shifted with respect to the other sensor (24) having a fixed phase difference, in particular with a phase difference of 90°.

Abstract: A method for monitoring a linear guide with a carriage that can be displaced along a rail on a lubricated rolling contact is provided having a sensor device for detecting a state of a lubricant for lubricating the rolling contact. In order to allow a quick determination of the state of the lubricant with simple measures, an oscillation time signal is detected by a sensor device from which a characteristic value that increases with increasing degradation of the lubricant is determined by an effective value determination after high-pass filtering. When the characteristic value exceeds a specified threshold value, measures are initiated for improving the lubricating properties.

Abstract: A method for monitoring a linear guide with a carriage that can be displaced along a rail on a rolling contact formed from roller bodies rolling on running tracks using a sensor device for detecting a damage state of the rolling contact is provided. In order to provide a simple damage monitoring that can also be carried out for small computational units in short times and with very economical sensor devices, using the sensor device, an oscillation time signal is detected, an envelope curve demodulation of the oscillation time signal is carried out from the oscillation time signal, and a resulting magnitude is determined according to a constant-component determination as a characteristic value that increases with the damage state, and a damage state is recognized when the characteristic value exceeds a specified threshold value.

Abstract: A linear guide with a guide carriage longitudinally movably arranged on a guide rail, which is preferably U-shaped and a braking device effectively arranged between the guide rail and the guide carriage. An actuator for actuating the braking device is provided and the actuator has an electro-active polymer effectively arranged in the longitudinal axis of the linear guide which engages around the guide rail for actuating the braking device.

Abstract: A method for detection and quantitative evaluation of a balance error occurring in a component-bearing system. Static and dynamic forces acting upon the bearing are determined by sensors of a measuring bridge, which are disposed on a rolling bearing and which change the inherent electrical resistance according to the applied pressure, and are made available for analysis in a computer in the form of a periodic test signal that is common to both forces. In order to analyze the test signal, the weighted average of the modulation frequency generated by a balance error and the weighted mean variance thereof are determined from the test signal. The variance is then compared with a given variance threshold value. A variance lying below the variance threshold value is considered to be an indication of a significant balance error in the bearing.

Abstract: A method for the technical and economic analysis of an industrial activity, includes: collecting the data which relates to the industrial activity, and dividing the data into a first subgroup and a second subgroup, processing data in all the subgroups in order to obtain a first value (v1) of an industrial parameter, known as internal capabilities, which corresponds to the first data subgroup and a second value of another industrial parameter, known as strategic importance which corresponds to the second data subgroup, wherein the values lie between zero and respectively predetermined limiting values and, using a two-dimensional representation, using transition values and, which are smaller than the limiting values and, and using the limiting values to delimit four approximately rectangular regions in the two-dimensional representation, each of which corresponds to a particular industrial evaluation, localizing the region in which the industrial activity is located, which is defined by the values which repr

Abstract: A meter bearing with a recess located at the periphery of at least one of the bearing rings. Expansion-measuring strips are disposed in the recess and conducting paths and electronic modules are arranged on a supporting material and evaluate and transmit the output signals of the expansion-measuring strips. The expansion-measuring strips are connected to the electrical conducting paths which extend to the electronic modules. In order to reduce the space required for such a measuring and evaluation system in a meter bearing, the expansion-measuring strips are placed below and/or above the radial plane of the supporting material and of the conductor paths and electronic modules located thereupon.

Abstract: A meter bearing with a recess located at the periphery of at least one of the bearing rings. Expansion-measuring strips are disposed in the recess and conducting paths and electronic modules are arranged on a supporting material and evaluate and transmit the output signals of the expansion-measuring strips. The expansion-measuring strips are connected to the electrical conducting paths which extend to the electronic modules. In order to reduce the space required for such a measuring and evaluation system in a meter bearing, the expansion-measuring strips are placed below and/or above the radial plane of the supporting material and of the conductor paths and electronic modules located thereupon.

Abstract: A method for detection and quantitative evaluation of a balance error occurring in a component-bearing system. Static and dynamic forces (F<SB>S>/SB>, F<SB>U</SB>) acting upon the bearing are determined by sensors of a measuring bridge, which are disposed on a rolling bearing and which change the inherent electrical resistance according to the applied pressure, and are made available for analysis in a computer in the form of a periodic test signal that is common to both forces. In order to analyze the test signal, the weighted average of the modulation frequency generated by a balance error and the weighted mean variance thereof are determined from the test signal. The variance is then compared with a given variance threshold value. A variance lying below the variance threshold value is considered to be an indication of a significant balance error in the bearing.