Abstract: A rotating machine including a thrust bearing configured to receive an axial thrust exerted by a rotor. The thrust bearing may be configured to transfer the axial thrust from the rotor to a housing or other structural component of the rotating machine using a plurality of ball bearings. The rotating machine includes a magnetic apparatus configured to cause the rotating machine to exert an axial force on the thrust bearing in the direction of the axial thrust of the rotor, such that the magnetic apparatus loads the ball bearings in the direction of the axial thrust. The magnetic apparatus may be configured to generate a magnetic field causing a first magnetic component of the magnetic apparatus to repel or attract a second magnetic component of the apparatus. The first magnetic component may be configured to rotate relative to the second magnetic component.

Abstract: A hybrid bearing assembly includes a bushing. A sleeve is rotationally disposed within the bushing and a support layer is disposed around an outer perimeter of the bushing. A protective sleeve is disposed abutting the sleeve. A protective bushing is disposed abutting the bushing.

Abstract: A unitized wheelend is provided. The unitized wheelend includes a hub having an inboard side bounded by an oil seal and an outboard side bounded by a retainer releasably coupled to the hub. The unitized wheelend assembly includes an inboard bearing assembly, a spacer, an outboard bearing assembly, and a spindle nut assembly.

Abstract: A turbine shaft of a turbomachine extending along a longitudinal axis (A) includes a main tubular portion with a length L1 and a maximum outer main diameter. The shaft further includes a secondary tubular segment with a length L2 and a maximum outer secondary diameter greater than the maximum outer main diameter. The secondary tubular segment extends radially from the shaft such that the main tubular portion extends on either side of the secondary tubular segment along the longitudinal axis (A). The secondary tubular segment includes a weak point that is configured to break the shaft into two distinct parts when the value of a tangential stress applied to the shaft exceeds a predetermined threshold value, and thus cause retraction of the turbine.

Abstract: A discharge grille of an intermediate casing of a turbomachine includes a peripheral edge and a seal mounted on the peripheral edge via an attachment system, the seal ensuring the sealing between a first turbomachine member and a second member of the turbomachine, and surrounding the discharge grille of the intermediate casing, the seal having a U-shaped cross section and includes a base plate configured to bear against the first member, a sealing lip configured to bear against the second member through deformation of the sealing lip to ensure air tightness and fire proofing through contact.

Abstract: A knuckle pin, coupling system, and method for producing a knuckle pin are provided, the knuckle pin having a cylindrical body with a longitudinal slot therein separating vertical edges of the cylindrical body, with one or more first retaining elements that span outward of the cylindrical body, and a second retainer that includes one or more of opposing apertures, and bendable legs. A method for producing the knuckle pin is provided, where a blank is stamped into a workpiece that corresponds to the pin to be produced, and the stamped workpiece is rolled to produce the pin with the slot.

Abstract: A caliper guide assembly and a method of manufacture. The guide assembly may include a guide pin, a guide bore arranged to receive the guide pin and permit relative axial sliding thereof, a bush arranged to define at least part of the guide bore, and a sensor arrangement configured to provide an output indicative of a state of wear of the bush.

Abstract: An anti-torque rotor is described for a helicopter, comprising: a mast rotatable about a first axis; a plurality of blades hinged on the mast, extending along respective second axes transversal to said first axis and rotatable about respective said second axes to alter the respective angles of attack; a control element sliding and rotating with respect to the mast, and operatively connected to said blades to cause the rotation of said blades about respective second axes following a translation of said element along the first axis; a control rod sliding axially along first axis with respect to the mast and angularly fixed with respect to the first axis; and a bearing interposed between the control rod and the control element, sliding along the first axis with respect to the mast and integrally with the control rod; the anti-torque rotor further comprises an interface made of an antifriction material interposed between said control rod and said bearing.

Abstract: An electric submersible pump (ESP) assembly. The ESP assembly comprises an electric motor, a centrifugal pump, and a hybrid magnetic thrust bearing, wherein the hybrid magnetic thrust bearing is disposed inside the electric motor or disposed inside the centrifugal pump.

Abstract: An anomalous sound detection training apparatus includes: a first acoustic feature extraction unit that extracts an acoustic feature of normal sound based on training data for normal sound by using an acoustic feature extractor; a normal sound model updating unit that updates a normal sound model by using the acoustic feature extracted; a second acoustic feature extraction unit that extracts an acoustic feature of anomalous sound based on simulated anomalous sound and extracts the acoustic feature of normal sound based on the training data for normal sound by using the acoustic feature extractor; and an acoustic feature extractor updating unit that updates the acoustic feature extractor by using the acoustic feature of anomalous sound and the acoustic feature of normal sound that have been extracted, in which processing by the units is repeatedly performed.

Abstract: A method for determining the preload value of the screw based on thermal error and temperature rise weighting. Firstly, thermal behavior test of the feed shaft under typical working conditions is carried out to obtain the maximum thermal error and the temperature rise at the key measuring points in each preloaded state. Then, a mathematical model of the preload value of the screw and the maximum thermal error is established; meanwhile, another mathematical model of the preload value of the screw and the temperature rise at the key measuring points is also established. Finally, the optimal preload value of the screw is obtained. The thermal error of the feed shaft and the temperature rise of the moving components are comprehensively considered, improving the processing accuracy and accuracy stability of the machine tool, and ensuring the service life of the moving components such as bearings.

Abstract: A seal plate is disclosed herein that is annular in shape and configured to rotate about a centerline. The seal plate includes a seal body having a first axial end forming a sealing surface and a second axial end opposite the first axial end, a slinger ring axially rearward of the seal body and having a plurality of radially extending tabs separated by a plurality of slots, and a groove between the seal body and the slinger ring. The tabs on the slinger ring are configured to direct lubricant at least partially radially inward into the groove and at least partially in a direction of rotation of the seal plate to cool the seal body.

Abstract: A bearing structure includes a shaft member coupled to a motor, two bearings on the shaft member with a distance therebetween in an axial direction, and a housing rotatable relative to the shaft member by means of the bearings, and an electrically-conductive seal member provided between the shaft member and the housing and abutting on the shaft member and the housing. The bearings include inner and outer rings fitted to an outer peripheral surface of the shaft member and an inner peripheral surface of the housing, respectively. The shaft member, housing, and seal member constitute an oil passage. At least one of an abutment portion where the seal member abuts on the shaft member or an abutment portion where the seal member abuts on the housing has a guide groove that guides oil entering the abutment portion from the oil passage to an external space of the oil passage.

Abstract: A sensor device for monitoring a component of interest, including at least one sensor for measuring at least one parameter indicative of condition of the component of interest, signal processing device for processing the signals of the sensor, and a mounting element for mounting the sensor device close to the component of interest. The mounting element can be made of a zinc alloy.

Abstract: The present disclosure teaches an electric machine including a housing for receiving a rotor unit and a connecting unit. The rotor unit may rotate around an axis of rotation and have a rotor shaft and a first sliding surface. The connecting unit may include a carrier, a contact part, and a spring part. The carrier part may be made of an electrically conductive material and at least partially surround the rotor shaft and is firmly connected to the housing. The contact part may be made of an electrically conductive material, including a second sliding surface. The spring part may be made of an electrically conductive material, at least partially surrounding the rotor shaft. The spring part may be firmly connected to the carrier part and the contact part and press the contact part against the first sliding surface so the sliding surfaces form the electrically conductive sliding contact.

Abstract: A bearing, including a bearing part, in particular a bearing ring (5, 6) having a cathodic corrosion prevention device. The aim of providing a bearing having a permanent, adjustable corrosion prevention device that requires only minor structural changes is achieved according to the invention in that the bearing part, in particular the bearing ring (5, 6), is connected as the cathode of an external power source, and that the anode (8, 10) of the external power source is arranged spaced apart from the bearing part, in particular the bearing ring (5, 6).

Abstract: A connecting module interposed between a drive shaft of an aircraft engine fan and a rolling-element bearing, wherein the module includes an inner structure attached to the shaft and including a bonnet, and an outer structure attached to the bearing, which is radially supported on a mechanism installed on the inner structure and delimiting a raceway which is complementary to the bonnet so as to form a ball-joint connection kept in a blocked state by a blocking device installed on the inner structure and protruding radially from the bonnet, wherein a mechanism forming a mechanical fuse provides a junction between the device and the bonnet, such that the ball-joint connection is released following fracture of this mechanism forming a mechanical fuse. The radial support mechanism is added to the device.

Abstract: A pump assembly with a rotatable rotor shaft (10), wherein the rotor shaft (10) includes at least one axial bearing (36, 40) and a radial bearing (30, 32), which are integrated into a common bearing assembly (16).

Abstract: A bearing assembly includes an outer ring having an inner circumferential surface and a generally annular recess extending radially outwardly from the inner surface. An inner ring is disposed at least partially within the outer ring so as to be rotatable about a central axis, the inner ring having an outer circumferential surface spaced radially inwardly from the outer ring inner surface and at least one integral shoulder extending radially outwardly from the outer surface so as to be disposed at least partially within the outer ring recess. The shoulder is engageable with the outer ring when the inner ring is subjected to an axial force so as to substantially prevent axial displacement of the inner ring relative to the outer ring. Preferably, a plurality of rolling elements are disposed between and rotatably couple the inner and outer rings.

Abstract: A bearing support assembly (10) comprising a bearing (12) supported within a bearing block (14) is provided. A shaft (26) is arranged to rotate within the bearing (12) and a disc member (34) is carried on the shaft (26) proximate to the bearing block (14). A ring member (20) is secured to the bearing block (14) so that in the event of bearing failure the disc member (34) engages with the ring member (20) so as to support the shaft (26) in rotational motion. The disc member has a diameter that is larger than the outer diameter of the ring member. The ring member (20) is at least partially recessed into the thickness of the disc member (34). The assembly may be utilized in agricultural machinery which include rotors (30) which are supported on rotating shafts. The ring member (20) may provide a labyrinth seal which inhibits the ingress of particulate matter into the bearing.

Abstract: The invention provides a trolley wheel assembly for a conveyor system, e.g., an overhead conveyor system. In certain embodiments, the wheel assembly includes at least one wheel face having a contour (optionally a funneling configuration and/or one or more surface features) configured to facilitate flow of a fluid toward an open bearing assembly of the wheel assembly. In some embodiments, the wheel assembly includes an inner race, outer race, and bearings having a particular hardness arrangement, optionally together with a polymer wheel having certain filler features. Methods for cleaning such a trolley wheel assembly are also provided.

Abstract: A bearing assembly for a first part that rotates with respect to a second part may include a slewing bearing having an axis of rotation and inner and outer races concentric with the axis of rotation. The inner race may be fixed to the first part and the outer race may be fixed to the second part. An inner, annular catch ring may be fixed to and adjacent to a lower surface of the inner race. An outer, annular catch ring may be fixed to and interposed between a lower surface of the outer race and the second part. A portion of the outer catch ring may be disposed below and adjacent to the lower surface of the inner race.

Abstract: A hydraulic pump is disclosed. The hydraulic pump may have a first fluid section (12), a second fluid section (14), and an input shaft (16) extending through the first fluid section and the second fluid section. The input shaft may have a first end (44), a second end (46), and a mid-portion (48) located between the first and second ends. The hydraulic pump may also have a first bearing (30) configured to continuously support the first end of the input shaft, and a second bearing (32) configured to continuously support the second end of the input shaft. The hydraulic pump may further have a third bearing (56) configured to intermittently support the mid-portion (58) of the input shaft.

Abstract: A bearing support is disclosed herein. The bearing support includes a pilot ring encircling an axis. The pilot ring is operable to be substantially-fixed in operation. The bearing support also includes a damper ring operable to receive an outer race of a bearing assembly. The bearing support also includes a fuse pin extending through aligned apertures in the pilot ring and the damper ring to prevent relative radial movement between the pilot ring and the damper ring up to a predetermined amount of loading. The fuse pin is operable to fracture in response to loading beyond the predetermined amount. The bearing support also includes a retainer extending through one of the pilot ring and the damper ring and fixed to the other of the pilot ring and the damper ring. The fuse pin is engaged with at least one of the first and second apertures through a heat shrink fit.

Abstract: A wheel bearing device for a motor vehicle, having an inner ring arrangement, formed for rotationally fixed reception of a first rotary partner, particularly an axle stump, or a shaft, an outer ring arrangement, which is connected and/or connectable and rotationally fixed with a second rotary partner, a multitude of rolling elements, which roll between the inner ring arrangement and the outer ring arrangement, so that inner ring arrangement and outer ring arrangement and/or the rotary partners are rotatable against each other, and an electric sensor device, which, using mechanical contact, is arranged and/or formed for detecting an operating status of the wheel bearing device. The sensor device has a stationary sensor element and a rotating sensor element, which can work together to form the mechanical contact. One of the sensor elements is connected with the inner ring arrangement without the interposition of the first rotary partner.

Abstract: A bearing cover is provided for attachment relative to a bearing assembly. The cover includes a flange and a magnet associated with the flange. The magnet is configured to removably retain the bearing cover relative to the bearing assembly.

Abstract: An auxiliary bearing system for supporting a rotating shaft including a first auxiliary bearing coupled to the rotating shaft. A first inertia ring is coupled to and circumscribes the first auxiliary bearing. A second inertia ring circumscribes the first inertia ring. A radial clearance is defined between the first and second inertia rings when the rotating shaft is supported by a primary bearing system, and the first inertia ring engages the second inertia ring when the rotating shaft is not supported by the primary bearing system. A second auxiliary bearing is engaged with an outer surface of the second inertia ring.

Abstract: A rotor decoupler system for a gas turbine engine is disclosed, comprising a load reduction system disposed between a bearing system and the bearing support. The load reduction system comprises a fuse and a damper such that the damper transfers at least a part of the radial load from the rotor to the bearing support when a fuse fails. In one exemplary embodiment the damper comprises a wire mesh, disposed around the outer race of the bearing. In another exemplary embodiment the damper comprises a rope damper assembly. In yet another exemplary embodiment, a load reduction system is disposed between a support structure and a frame, comprising an extensional fuse and a damper disposed between the support structure and the frame such that the damper transfers at least a part of the unbalance load to the frame when an extensional fuse fails.

Abstract: The invention relates to a windshield wiper device, particularly for a motor vehicle, comprising at least one wiper shaft (10). Prior art windshield wiper devices having predetermined breaking points exist in order to meet the high demands of pedestrian impact protection. However, the risk of these predetermined breaking points rupturing during the operation of the wiper exists in this type of windshield wiper device. In addition it cannot be guaranteed that the predetermined breaking point ruptures in the event of a pedestrian impact. Therefore, in the inventive windshield wiper device, the at least one wiper shaft (10) can be displaced under the action of a force.

Abstract: A turbocharger monitor including a sensor adapted and positioned with respect to a turbocharger housing to sense passing compressor blades, generating both rotor rotation information and rotor displacement information. A controller is configured to receive the generated information from the blade sensor, and to establish rotor rotation speed and an indicator of bearing condition.

Abstract: The emergency rolling bearing for a rotary machine having magnetic bearings includes at least first and second bearing members with radial clearance of value ?r/2 that is of the order of half the mean radial air gap ?r of the magnetic bearings being arranged between each of the bearing members and the rotor, and axial clearances ?a are provided on either side of the set of bearing members between said set and first and second axial abutment elements secured to the rotor. The first bearing member is mounted directly in a first intermediate support element coaxial with a stator element. The second bearing member is mounted in a second intermediate support element likewise coaxial with the stator element.

Abstract: A bearing failure indication arrangement which has a bearing with an inner and outer races, a first part arranged to be attached in fixed relation to either the bearing inner race or bearing outer race, a failure indicator arranged in fixed relation to both the first part and either the bearing inner race or the bearing outer race, the failure indicator constructed so that if relative movement occurs between the first part and the bearing race to which it is attached, the failure indicator responds to the relative movement thereby indicating failure of the bearing.

Abstract: A bearing unit capable of withstanding a large axial force based on a simple structure including: a bearing 10 having an internal ring 13 fitted to an inside member 2, an outer ring 14 fitted to an outside member 6, lots of rolling elements 15 disposed between the outer ring 14 and the inner ring 13; and a transmitting direction shifting means A transmitting an axial force F from the inner ring 13 to the outside member 6 when the axial force F transmitted from the inside member 2 to the internal ring 13 exceeds a predetermined value or above, and a main spindle device of a machine tool, which is provided with the bearing unit, are provided.

Abstract: An intelligent transmission element includes a first element formed in a strip shape and disposed with a slot therein; a second element disposed with a containing space for placing the first element, wherein the inner side of the containing space is disposed with a tank corresponding to the plurality of slots, the tank and the plurality of slots forms a loading path for disposing a plurality of rolling elements and a silencing element. The silencing element is placed between the plurality of rolling elements and contains a dye container for a dye. When the silencing element is damaged due to an external force, the dye inside the dye container of the silencing element would color the transmission element to let the user notice that the silencing element is damaged.

Abstract: A wheel bearing assembly endcap 200 configured with a pilot structure 202 defined by radially-inner and radially-outer annular portions 202a, 202b joined by an annular bend 202c disposed between a central face 204 of the endcap and an outer peripheral flange 206. The pilot structure 202 projects in an axially outboard direction along the axis X of the wheel bearing assembly 100 for fitment within an inner diameter surface 112 of an outer axial member 106, to facilitate sealing and a spring-biased retention of the endcap 200 within the wheel bearing assembly 100. The outer peripheral flange 206, which is contiguous with the pilot structure 202, seats against an inboard end face 114 of the wheel bearing assembly 100 outer axial member 106 to provide a positive axial stop, and is configured as an additional sealing element to reduce contaminate ingress between the endcap 200 and the interior surfaces of the wheel bearing assembly 100.

Abstract: The aim is to avoid damaging lubricating-film discharges occurring via bearings (WL) in electrical machines. For this reason, provision is made for a current to be forced to flow through the bearing (WL) specifically, with the aid of a current source (IQ). The current then flows from one of the two bearing components via the lubricating film to the other bearing component. Alternating currents are particularly suitable since the lubricating film is conductive, so that the capacitance defined by the lubricating film cannot be charged, or can be charged only slightly.

Abstract: Protection device for a speed sensor, the sensor being provided with a reading surface which is arranged at a first determined distance from an encoder of a contact rolling bearing, and the protection device being coupled to the contact rolling bearing, and presenting a housing for the sensor, and at least one scraping element which is arranged in such a way as to face the encoder itself in order to remove any eventual impurities from the encoder.

Abstract: A bearing arrangement with rolling elements is arranged between an outer bearing race and an inner bearing race. The inner bearing race includes a first half-race fastened to the rotating shaft and a second half-race. The bearing arrangement includes a maintaining unit which maintains the two half-races together. The maintaining unit is designed to break or deform when the bearing is subjected to a misalignment or a moment above a predetermined value, so as to allow an axial displacement of the second half-race with respect to the first half-race. The invention may be applied to a bearing for a rotating shaft of a turbine engine.

Abstract: For machinery comprising rotary components attached to at least one drive shaft, at least one rotary bearing to position the drive shaft with a rotational freedom of movement about a drive shaft axis and associated stationary components, apparatus that comprises: a rotary backup bearing sleeve attached to the drive shaft proximate the bearing comprising a rotary radial surface relative to the drive shaft axis and a rotary axial surface relative to the drive shaft axis; and a stationary backup bearing collar mounted to one of the stationary components proximate the rotary backup bearing sleeve comprising a stationary radial surface relative to the drive shaft axis proximate the rotary radial surface with a predetermined axial clearance and a stationary axial surface relative to the drive shaft axis proximate the rotary radial surface with a predetermined axial clearance.

Abstract: A device for damping runout vibration of a rotating shaft system at least including a rotating shaft and a rotating body rotatably supported by the shaft. A ring (24) is provided outside a bearing (23) fitted on a rotating shaft with a clearance between the ring and an outer ring of the bearing. A vibration damping mechanism includes, in order to suppress runout vibration of a rotating shaft system from the radially outside of the ring (24), a blade spring (25) compressed by a preload and a stopper (26) for setting an operation limit of the blade spring.

Abstract: A detachable rolling-element retainer comprises: a slide block defined with a slide groove in which disposed a plurality of rolling elements and a base inserted in the slide groove of the slide block. The base is provided at either end thereof with elastic deformable stopping portions. One of the stopping portions is positioned at an end of the slide block after being compressed in to and passing through the slide groove, while another one of the stopping portions is positioned at another end of the slide block, thus enabling the base of the rolling-element retainer to be inserted into or disengaged from the slide groove of the slide block easily while preventing disengagement of the rolling elements from the slide block.

Abstract: A roller apparatus includes a rotating roller, a bushing frictionally supporting the rotating roller, a frame having a bushing hole into which a bushing is inserted and supporting the bushing, and a grounding member interposed between the bushing and the frame and grounding the bushing by press contacting with the bushing when the bushing is inserted into the bushing hole. Thus, the roller apparatus effectively grounds a bushing.

Abstract: A bearing shield and disk scraper system to remove and deflect dirt, debris, and soil from a bearing assembly, rigid bearing hanger or standard, and/or disk blade, is provided; the system also provides a protective barrier structure for the bearing assembly. The bearing shield and disk scraper system includes a shield member and a scraper blade connected thereto. The bearing shield at least partially encases and protects a bearing assembly that rotatably supports a common axle which carries multiple disk blades of the disk gang. The scraper blade is attached to the shield member by way of a mounting flange that extends therefrom. An edge of the scraper blade is positioned in close proximity to a concave surface of an adjacent disk blade, whereby the entire assemblage of bearing shield and disk scraper system protects the bearing assembly and prevents non-desired accumulation of dirt and debris on the disk blade.

Abstract: A turbocharger monitor including a sensor adapted and positioned with respect to a turbocharger housing to sense passing compressor blades, generating both rotor rotation information and rotor displacement information. A controller is configured to receive the generated information from the blade sensor, and to establish rotor rotation speed and an indicator of bearing condition.

Abstract: Wheel and other bearing restraint jam nuts and early warning visual warning indicators for use with bearing hubs including driven and non-driven wheel bearing hubs wherein each jam nut is adapted to be received on either a threaded drive axle tube spindle or an axle spindle by use of a convention tool and such that the jam nut is of a size to obstruct wheel bearing hub separation in the event of a bearing failure and wherein a portion of the jam nut is engageable to force an indicator outwardly of the wheel bearing hub whenever the wheel bearing hub is not properly rotating about it's axis of rotation to thereby provide a visual indication of a potential problem with the bearings or other components within the wheel or other bearing hub.

Abstract: A gas turbine engine (10) comprising a first turbine (19) and a first compressor (13) mounted on a first shaft (26) and a bearing arrangement (52, 34) supporting the shaft (26), the bearing arrangement is subject to a total end load and comprises a fixed bearing (34), a load share bearing (52) and a bearing end load management system (50) that is capable of applying a variable load to the load share bearing to manage total end load between the bearings. The bearing end load management system comprises a static diaphragm (54) that defines part of a chamber (56) and that is coupled to the load share bearing whereby increased pressurisation of the chamber loads the diaphragm which in turn increases the proportion of the total end load on the load share bearing.

Abstract: Disclosed herein is a contamination protection apparatus that includes a concealed linear glandular seal for providing continuous protection along an entire length of a movable table of a precision apparatus such as testing and metrology machines, laser machines, biomedical equipment, and precision fabricating machines. The disclosed glandular seal is formed on an inner structure of the protective apparatus, which includes a plurality of mechanical translation stages positioned in the inner structure and two normally closed linear parts of the glandular seal attached to respective mechanical translation stages. The linear parts interfere with each other and are opened by movement of a mechanical translation stage saddle.

Abstract: The density of a multipolar magnet in this type of magnetic encoder, in particular, a multipolar magnet composed of a sintered compact, is made uniform. Samarium-iron based magnetic powder is used as magnetic powder, tin powder is used as non-magnetic metal powder, and a compressed molded body 114 is obtained by compression molding of a mixed powder of 20 to 90 wt % of samarium-iron based magnetic powder and 10 to 80 wt % of tin powder. The compressed molded body 114 is sintered at a temperature less than the melting point of the tin powder serving as the non-magnetic metal powder, so that the sintered compact is formed which serves as the multipolar magnet of the magnetic encoder 10.

Abstract: An arrangement of bearing supports for a rotating shaft mounted on bearings connected to an engine stator structure by bearing supports of which at least one is made up of N>1 elements effectively acting in parallel to simultaneously connect the bearing to the structure, of which N?1 of the N elements form this connection by fusible links, is made up of a first bearing supported by a first bearing support and a second bearing supported by a second bearing support, that of the two bearing supports which makes up the N>1 elements being the second bearing support.

Abstract: A hood for a bearing assembly isolates lubricants or gases expelled from the bearing assembly. The hood may include lower, middle, and upper portions that substantially form a funnel. The hood covers at least a portion of a bearing seal of the bearing assembly and extends from the bearing assembly and out of a galvanizing bath. The hood may be formed from one or more sheets of material. Mounting brackets are provided to secure the hood to the bearing.