Aktiebolaget Skf

Skf Aerospace France S.a.s

Victor Brizmer

Eric Robert

Guillermo Enrique Morales Espejel

Francesco Lamboglia

Yoann Hebrard

Charlotte Vieillard

Urszula Alicja Sachadel-Solarek

Herve Carrerot

Kenred Stadler

Leonardo Catana

Hubertus Laurentius Maria Peek

Ralph Meeuwenoord

Paul Heinrich Michael Boettger

Yuri Kadin

Mohamed Youssef Abdelraouf Sherif

Guillermo Morales Espejel

A sensor bearing unit comprising: Besides, at least one of the lateral and cylindrical surfaces is provided with a textured area comprising a plurality of ribs, and the abutment portion and/or the fixing portion of the target holder is made of a hard material and comprise a soft coating covering the hard material and inside which the ribs are engaged.

Sensor bearing unit and method of manufacturing such a sensor bearing unit

A bearing component composed of a chromium-molybdenum-vanadium alloyed tool steel is produced by a process that includes: (i) performing a first preheating within a temperature range of 600-650° C., (ii) performing a second preheating within a temperature range of 850-900° C., (iii) austenitizing in vacuum at 1000-1180° C. for 20-40 min, (iv) gas quenching at a minimum of 4-5 bar overpressure, and (v) tempering by performing either a double temper at 520-560° C. for 1.5-2.5 hours in each temper, or a triple temper at 520-560° C. for 0.5-1.5 hours in each temper. The steel alloy may be composed (in mass percent) of 1.32-1.45 C, 0.32-0.50 Si, 0.26-0.48 Mn, 4.0-4.85 Cr, 3.35-3.55 Mo, 3.55-3.85 V, 0-0.13 W, 0-0.20 Ni, 0-0.15 Cu, 0-0.8 Co, 0-0.03 P, and 0-0.03 S, the balance being iron and unavoidable impurities. Mo may be replaced with W or vice versa in a replacement ratio Mo:W of 1:2.

Bearing component and method of manufacturing thereof

Method for detecting at least one critical defect in a ceramic rolling element providing the steps of capturing a plurality of two-dimensional digital radiographic images of the ceramic rolling element; digitally filtering each radiographic image; delineating, on the basis of the filtered image, at least one region liable to comprise the critical defect; constructing stereoscopically a virtual model of the ceramic rolling element having the region; comparing the dimensions of the delineated region with a plurality of predetermined threshold values, and, when the dimensions are greater than the threshold values, generating an alarm signal.

Method for detecting a critical defect in a ceramic rolling element

A rolling contact bearing, wherein the surface of the raceways of an outer member and/or an inner member are randomly formed with an innumerable number of microconcavelike pits, the surfaces are provided with said pits having a surface roughness value smaller than 0.25 microns and a skewness Rsk value such that &#x2212;3.5&#x3c;Rsk&#x3c;&#x2212;1.0.

Rolling contact bearing with improved performances

A bearing comprising a plurality of rolling elements arranged between an inner and outer raceway thereof. A rolling contact interface is between a first rolling contact surface on at least one rolling element and a second rolling contact surface formed by one of the inner and outer raceways. The first rolling contact surface has a first RMS roughness Rand a first roughness pattern &#x3b3;, expressed in terms of the Peklenik number &#x3b3;. The second rolling contact surface has a second RMS roughness Rand a second roughness pattern &#x3b3;. To minimize micropitting in the bearing, the rolling contact interface has a surface topography wherein (a) the roughness pattern of the first and second rolling contact surfaces are oriented in the direction of rolling, whereby &#x3b3;&#x2267;3.0 and &#x3b3;&#x2267;10.0; and (b) the first and of the second rolling contact surfaces have substantially equal roughness heights, whereby 0.8&#x2266;R/R&#x2266;1.25.

Bearing with improved resistance to micropitting

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Utrecht, Netherlands

Victor Brizmer