Abstract: Bearing housing including a housing element designed to be adapted to receive internally a bearing, and a fastening base or flange to a frame of machinery provided with through holes for screws or bolts and having a shoulder face intended to go into use in contact against the frame of the machine equipment, the face of the shoulder being traversed by through holes. The housing element is made of a synthetic molded plastic material and the base or flange has its shoulder face covered by a layer of elastomeric material which has been molded integrally fixed in one piece with the base or flange.

Abstract: A combination bearing and seal assembly includes a tubular inner body disposable about a shaft so rotate about an axis and has a first outer circumferential surface section providing an inner bearing race and a second outer circumferential surface section spaced axially from the first surface section and providing a seal engagement surface. A tubular outer body is disposed about the inner body and has an inner circumferential surface section providing a bearing outer race and rolling elements are disposed between the two races to form a bearing. A seal member(s) form an annular seal between the inner and outer bodies and is spaced axially from the bearing. The seal member(s) have inner sealing surface(s) engageable with the inner body engagement surface when the inner body is generally stationary and the seal is configured to displace radially outwardly from the engagement surface when the inner body rotates about the axis.

Abstract: A wind turbine rotor shaft arrangement comprising a shaft supporting wind turbine blades and a non-rotating first housing structure (mounted to a wind turbine nacelle framing) along with a first rolling bearing supporting (in a first axial direction) the shaft to the first housing structure at a first support point. The first rolling bearing is a self-aligning bearing comprising a first inner ring, a first outer ring and a set of rolling elements interposed therebetween. Each roller is asymmetric, having a curved raceway-contacting surface contacting at least one of the curved inner/outer raceways of the first inner/outer ring, respectively. A contact angle between each roller and the respective raceway is inclined respective to the shaft radial direction. A non-rotating second housing structure (mounted to the wind turbine nacelle framing) supports the shaft. A second rolling bearing supports the shaft by the second housing structure at a second support point.

Abstract: A mechanical system forming one of a cam follower or a rocker arm, the mechanical system comprising: a support element, a pin extending between two opposite ends along a first axis and supported by the support element, and a roller mounted on pin, movable in rotation relative to the pin around the first axis and adapted to roll on a cam. The support element includes a bearing body adapted to receive pin, and an additional retaining member blocking the translation of pin back and forth, along first axis.

Abstract: An inductor device, including: blocks of electrically conducting material which are electrically isolated from each other, a block of electrically insulating material supporting respective induction coils, an integrated shower and a hydraulic circuit partly obtained within the blocks of electrical conducting material and including: a first branch for feeding a cooling fluid to the induction coils which hydraulically connects all the induction coils in parallel and mechanically in sequence to each other. A second branch hydraulically connects only a first induction coil with a first return outlet of the hydraulic circuit. A third branch for each induction coil in addition to the first, each third branch including a second return outlet separated from the first outlet and being hydraulically connected with only one single induction coil other than the first.

Abstract: An assembly providing a bearing, a lubricant and a contamination sensor for determining a level of contamination in the lubricant. The sensor includes an EM wave generator for generating an EM signal, and an EM sensing element arranged in contact with the lubricant. The EM sensing element receives the generated EM signal and transmits an output signal whose properties are responsive to real and imaginary parts of a complex relative permittivity of the lubricant. The output signal is received by an EM measuring device that measures first and second parameters of the output signal, which are respectively representative of the real and imaginary parts of the complex relative permittivity. The EM measuring device determines a level of water contamination in the lubricant, based on the measured first parameter alone and determines a level of metal particle contamination in the grease, based on the measured first and second parameters.

Abstract: A process for preparing a coating on at least part of a tribological surface of a first machine component which, during machine operation, is adapted to be in sliding contact with a tribological surface of a second machine component is provided. The process provides the steps of: (a) applying a polymer formulation onto at least part of the tribological surface of the first machine component to form a coating. The polymer formulation provides an isocyanate that contains two or more isocyanate groups per molecule and an idocyanate-reactive polyol to form polyurethanes; and (b) subjecting at least part of the coating as obtained in step (a) to a curing treatment during which polyurethanes are formed in the coating on the at least part of the tribological surface of the first machine component.

Abstract: An actuating device having a longitudinal shaft, an internal sleeve, an external sleeve, internal screw connecting means provided between the longitudinal shaft and the intermediate sleeve, external screw connecting means provided between the intermediate sleeve and the external sleeve. The direct efficiency of the internal screw connecting means is higher than the direct efficiency of the external screw connecting means. The self-releasable coupling means are provided between the longitudinal shaft and the internal sleeve.

Abstract: A hub-bearing unit is provided with: a rotatable hub, with an axially outer flange portion configured for engagement with a rotatable element of a motor vehicle, a bearing unit provided with a fixed radially outer ring, configured for engagement with a fixed element of the motor vehicle, a first, axially outer, crown of rolling bodies, and a second, axially inner, crown of rolling bodies, interposed between the radially outer ring and the hub. The hub also assumes the function of the radially inner ring of the bearing unit and the bell of a constant velocity joint. The hub-bearing unit is designed so that the axial distance between the center of the axially inner crown of rolling bodies and the rolling center of the constant velocity joint lies within a predetermined range according to the following formula: { with ? ? L ? 0 , 0.4 ? P B S + A + L ? 4 with ? ? L < 0 , 0.5 ? P B S + A ? 4 ? ? ? .

Abstract: The present invention resides in a sensorized roller of a roller bearing. The sensorized roller includes a roller bore that accommodates a measuring device for measuring deformation of the roller bore and electronics for processing a deformation signal from the measuring device and wirelessly transmitting the processed deformation signal to an external receiver. According to the invention, the measuring device and electronics are mounted in a rigid housing that is shaped to fit within the roller bore. A radially outer surface of the housing includes at least one aperture associated with the measuring device. Furthermore, the rigid housing is resiliently mounted to the roller bore via first and second sealing elements that enclose a radial gap between a radially inner surface of the roller bore and a radially outer surface of the housing.

Abstract: A bearing assembly is for movably coupling first and second members, one being movable relative to the other. A plain bearing section includes an inner ring having a bore for receiving the first member and an outer cylindrical bearing surface. An outer ring is disposed about the inner ring and has an inner cylindrical bearing surface disposed against the inner ring bearing surface, one bearing surface sliding against the other when the movable member displaces about a first axis. The two rings engage to prevent relative displacement between the rings when the movable member displaces about a second axis. An elastomeric bearing section is disposed about the plain bearing section, is connected with the second member and is formed such that at least a portion of the elastomeric bearing section flexes when the movable member angularly displaces about the second axis.

Abstract: A brake device for a linear actuator is provided having a torque transmission mechanism for forward transfer of driving torque and a spring friction mechanism for blocking backward transfer of load torque. The mechanism provides an input shaft and a first coupled claw connected to the input shaft that rotates synchronously therewith, a driving torque output shaft and a second coupled claw connected to the output shaft and capable rotating synchronously therewith. The first coupled claw and second coupled claw are matched and engaged together, and used to transfer driving torque in a forward direction from the input shaft to the output shaft. The spring friction mechanism provides a brake housing and a friction coil spring disposed elastically in a cylindrical inner hole of the brake housing. The friction coil spring formed with end parts at two axial ends for hooking onto the first and second coupled claws.

Abstract: A device for measuring an absolute angle includes first and second rotatable members having first and second radii and capable of rotating over first and second angles respectively, a first number of detectable elements mounted on the first rotatable member, a second number of detectable elements mounted on the second rotatable member, and at least one sensor for detecting rotation of the detectable elements. The second rotatable member is coupled with the first rotatable member such that the second angle is equal to the first angle times the ratio of the first radius and the second radius. The first radius is equal to a first integer times a factor, while the second radius is equal to a second integer times the factor. The product of the first number and the second integer, and the product of the second number and the first integer, are co-prime.

Abstract: A bearing assembly is configured to rotatably support a first machine part in a second machine part and includes first and second rolling-element bearings. The rolling-element bearings are installed in the bearing assembly with an axial preload or an axial clearance. The second machine part includes a first conical abutment surface, and the first rolling-element bearing includes a bearing ring having a second conical abutment surface facing the first conical abutment surface of the second machine part. An intermediate ring is disposed between and abuts the first and second conical abutment surfaces. The bearing ring and the second machine part are metal, and the intermediate ring is formed from a material that has a higher coefficient of thermal expansion than that of the bearing ring and second machine part.

Abstract: In a planetary gear arrangement with a planetary gear which includes a rotating part and a non-rotating part, and with a sensor module for sensing properties of the planetary gear, the sensor module includes a sensor as well as a first sending/receiving unit and a second sending/receiving unit, wherein the sensor and the first sending/receiving unit are coupled and arranged at the rotating part, and wherein the second sending/receiving unit is arranged at the non-rotating part, wherein the first sending/receiving unit and the second sending/receiving unit are configured for being inductively coupled, wherein the first sending/receiving unit includes an energy storage, wherein the energy storage is configured for being charged during each turn of the rotating part for powering the sensor via the first sending/receiving unit in order to perform measurements.

Abstract: A lubrication system comprising a motor, a positive displacement pump driven by the motor, a lubricant container in fluid communication with the positive displacement pump and at least one lubricant outlet in fluid communication with the lubricant container. The positive displacement pump is arranged to carry out at least one discharge stroke to dispense lubricant from the at least one lubricant outlet when the lubrication system is in use. The lubrication system also comprises a control unit that is arranged to determine an amount of lubricant that is dispensed from the lubricant container via the at least one lubricant outlet when the lubrication system is in use. The control unit is arranged to monitor current supplied to the motor to obtain a motor current signal, and to determine a number of the discharge strokes from the motor current signal.

Abstract: A cylindrical pin of a valve control lever has an outer side wall, a first end wall and a second end wall and includes a blind bore that extends from a blind bore opening in the first end wall to an inner surface of the second end wall, the inner surface forming a blind bore base, the blind bore base including at least one through opening.