Aktiebolaget Skf

Ab Skf

Udo Krug

Armin Olschewski

Arno Stubenrauch

Henning Kern

Thilo Beck

Juergen Gegner

Peter Lemper

Armin Schlereth

Klaus-Dieter Schulz

Andreas Beutler

Peter Saal

Armin Ohlschewski

A method for manufacturing a raceway element of a bearing assembly includes hardening a raceway element having a raceway surface by at least partially heating the raceway element, deep rolling the raceway surface using a first rolling element, and then deep rolling the raceway surface using a second rolling element. The first rolling element has at least one different dimension than the second rolling element. In the resulting raceway element, compressive residual stresses of at least 400 MPa are present at a depth from the raceway surface of 200 &#x3bc;m or less, and between the raceway surface and a depth of 100 &#x3bc;m from the raceway surface, the amount of the compressive residual stresses changes by 500 MPa or less.

Method for producing a track element of a bearing assembly

A bearing assembly includes two tapered roller bearings having inner and outer rings and tapered rollers therebetween. The inner rings are mounted to a first machine part, and the outer rings are mounted on an adapter sleeve on a second machine part. The adapter sleeve has a first end axially fixed relative to the second machine part and a second end axially spaced from an axial stop of the second machine part by an axial gap. At a non-operating temperature, such as 20&#xb0; C., the gap has a width of about 30 &#x3bc;m to 250 &#x3bc;m, and at an operating temperature of over 50&#xb0; C. the gap disappears and the second end contacts the axial stop. The width of the gap at the non-operating temperature is selected to produce a predetermined preload on the bearing assembly at the operating temperature.

Bearing assembly

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Theres, Germany

Udo Krug