# US 2022/0034366 A1 · Method for mounting a sensor bearing unit, and sensor bearing unit adapted to such a method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0034366 A1 - Document ID: US20220034366A1 - Status: Published application - Kind: A1 - Application number: 17/503,582 - Filed: 2021-10-18 - Published: 2022-02-03 - Earliest claimed: 2019-09-11 - Assignees: Aktiebolaget Skf - Applicants: Aktiebolaget SKF - Inventors: Yves-André Liverato; Eric Robert; Vincent Sausset - Web page: https://patentgrep.com/patent/US20220034366A1 ## CPC - F16C 41/007: {Encoders, e.g. parts with a plurality of alternating magnetic poles} - G01B 11/27: for testing the alignment of axes {(means for centering or aligning a light guide within a ferrule G02B6/3834)} - F16C 33/586: {outside the space between the races, e.g. end faces or bore of inner ring} - F16C 43/04: Assembling rolling-contact bearings - G01B 5/252: for measuring eccentricity, i.e. lateral shift between two parallel axes - G01D 5/24442: {by mounting means} - G01P 3/443: {mounted in bearings (bearings F16C)} - G01P 3/487: delivered by rotating magnets - F16C 19/06: with a single row or balls - F16C 2233/00: Monitoring condition, e.g. temperature, load, vibration - G01B 9/04: Measuring microscopes - F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS - G01B: MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS - G01D: MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR - G01P: MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT (measuring or recording blood flow A61B5/02, A61B8/06; monitoring speed or deceleration of electrically-propelled vehicles B60L3/00; vehicle lighting systems adapted to indicate speed B60Q1/54; determining position or course in navigation, measuring ground distance in geodesy or surveying G01C; combined measuring devices for measuring two or more variables of movement G01C23/00; measuring velocity of sound G01H; measuring velocity of light G01J7/00; measuring direction or velocity of solid objects by reception or emission of radiowaves or other waves and based on propagation effects, e.g. Doppler effect, propagation time, direction of propagation, G01S; measuring speed of nuclear radiation G01T; measuring acceleration of gravity G01V; {measuring or recording the speed of trains B61L23/00; speed indicators incorporated in motor vehicles B60K35/00; measuring frequency or phase G01R; traffic control G08G}) ## Abstract A method for mounting a sensor bearing unit providing a bearing and an impulse ring provided with a target holder and with a target mounted on an axial portion of the target holder. The method including measuring an eccentricity E1 between the target and the axial portion of the target holder, measuring an eccentricity E2 between a groove made in the bore of an inner ring of the bearing and the bore, introducing the target holder inside the groove, turning the target holder inside the groove to an angular position in which the eccentricity Etotal between the target and the bore of the inner ring is less than or equal to a predetermined value which is lower than the sum of the eccentricities E1 and E2, and securing the target holder inside the groove of the inner ring at the angular position. ## Claims ### Claim 1 A sensor bearing unit, comprising: an outer ring; an inner ring, when viewed in cross section, having a bore therethrough formed, in part, by a radially innermost axially extending inner ring surface, the inner ring and the outer ring being configured for relative rotation therebetween around a rotation axis; a plurality of rolling elements disposed between the outer ring and the inner ring; and an impulse ring, comprising: a target; and a target holder, when viewed in cross section, having a radially innermost axial target holder portion, the target being positioned on the target holder; wherein the inner ring, when viewed in cross section, further defines a cylindrical groove which extends radially outwardly from the radially innermost axially extending surface of the inner ring, the cylindrical groove having a greater diameter than a portion of the bore formed by the radially extending innermost axially extending surface, the cylindrical groove being configured for mounting the radially innermost axial target holding portion thereby fastening the impulse ring to the inner ring. ### Claim 2 (depends on 1) The sensor bearing unit of claim 1, wherein the target is mounted on an inner cylindrical surface of a radially outermost axial target holder portion. ### Claim 3 (depends on 2) The sensor bearing unit of claim 2, wherein the target holder further comprises an annular radial portion, the annular radial portion connecting the radially innermost axial target holder portion to the radially outermost axial target holder portion such that the target is outwardly radially spaced from the outer ring. ### Claim 4 (depends on 3) The sensor bearing unit of claim 3, wherein the annular radial portion defines at least one through-hole. ### Claim 5 (depends on 3) The sensor bearing unit of claim 3, wherein a radial lateral face of the inner ring contacts a radially inner portion of the annular radial portion. ### Claim 6 (depends on 1) The sensor bearing unit of claim 1, wherein the target is mounted on an outer cylindrical surface of a radially outermost target holder portion such that at least a portion of the target axially overlaps the outer bearing. ### Claim 7 (depends on 2) The sensor bearing unit of claim 2, further comprising a sensor for measuring the impulse of the target, the sensor facing a radial inner surface of the target and being located radially between the target and the outer ring, wherein the target and the sensor provide measurements via electromagnetic induction or electro-optics. ### Claim 8 (depends on 1) The sensor bearing unit of claim 1, wherein the target holder is made solely of metal. ### Claim 9 (depends on 1) The sensor bearing unit of claim 1, wherein the target holder is made solely of plastic. ### Claim 10 (depends on 1) The sensor bearing unit of claim 1, wherein the inner ring is configured to be mounted on a rotating shaft such that the radially innermost axially extending surface of the inner ring is positioned between the inner ring and the shaft. ### Claim 11 An impulse ring configured for use with a rotating member, comprising: a target; and a target holder having a radially outermost axial target holder portion; wherein the radially outermost axial target holder portion is configured to mount the target therein. ### Claim 12 (depends on 11) The impulse ring of claim 11, wherein the target is mounted on an inner cylindrical surface of the radially outermost axial target holder portion. ### Claim 13 (depends on 11) The impulse ring of claim 11, wherein the target holder comprises a radially innermost axial target holder portion configured to be mounted in a groove of the rotating member. ### Claim 14 (depends on 13) The impulse ring of claim 13, wherein the target holder comprises an annular radial portion connecting the radially innermost axial target holder portion and the radially outermost axial target holder portion. ### Claim 15 (depends on 14) The impulse ring of claim 14, wherein the annular radial portion defines at least one through-hole. ### Claim 16 (depends on 12) The impulse ring of claim 12, wherein a sensor is located radially inward of the target and configured to measure a rate of change of the magnetic field of the target. ### Claim 17 (depends on 13) The impulse ring of claim 13, wherein a radially inner portion of the annular radial portion contacts a radial lateral face of the rotating member. ### Claim 18 (depends on 11) The impulse ring of claim 11, wherein the rotating member is an inner ring of a bearing. ### Claim 19 A method of measuring the rotation of a component, comprising the steps of: i) Providing a bearing comprising an outer ring, an inner ring, and a plurality of rolling elements disposed therebetween; ii) Providing an impulse ring comprising a target and a target holder; iii) Mounting the impulse ring onto the inner ring of the bearing; iv) Mounting the inner ring onto the component; v) Introducing a fixed sensor radially between the outer ring and the target; and vi) Measuring the rotation speed of the component by measuring the change in magnetic field of the target with the fixed sensor. ### Claim 20 (depends on 19) The method of claim 19, wherein the step of mounting the impulse ring on to the inner ring further comprises: i) Measuring a first eccentricity of a bore defined by the inner ring; ii) Measuring a second eccentricity of a radially innermost surface of the target holder; and iii) Mounting the target holder within the inner ring at a certain angle such that a third eccentricity of the bore together with the radially innermost surface is less than each of the first eccentricity and the second eccentricity.