NOISE- AND WEAR-OPTIMISED ROLLING BEARING FOR MOUNTING A SHAFT

• Main Authors: HILBINGER, Jürgen, HOCK, Tobias, PAUSCH, Michael, DINKEL, Markus, VOLL, Martin, CLAUS, Sven
• Format: Patent
• Language: English; French; German
• Published: 29.04.2020
• Subjects: BEARINGS; BLASTING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; THERMAL INSULATION IN GENERAL; WEAPONS

The invention relates to a rolling bearing (1) for mounting a shaft (7), comprising an inner ring (2) and an outer ring (3) formed from a ring material, wherein the inner ring (2) has a respective raceway (4) on an outer circumferential surface and the outer ring (3) has a respective raceway (5) on an inner circumferential surface for guiding balls (6), wherein the balls (6) roll on the respective raceways (4, 5), wherein the ring material contains 0.5 to 2 wt.% carbon, max. 0.035 wt.% sulphur, 3 to 5 wt.% chromium, 1 to 4 wt.% vanadium, 1 to 12 wt.% tungsten, and 2 to 12 wt.% molybdenum, with a hardness of a surface of the respective raceway (4, 5) of at least 62 HRC, wherein the inner ring (2) and the outer ring (3) have an E-modulus of 220 to 250 MPa, wherein an osculation between the raceway (4) on the inner ring (2) and the balls (6) and/or an osculation between the raceway (5) on the outer ring (3) and the balls (6) is at least 1.05, and wherein at least the raceway (5) on the inner ring (2) and/or the raceway (5) on the outer ring (3) has a surface roughness with an average roughness Ra of 0.005 to 0.03, with a skewness Rsk of 0.3 to -5, and with a gradient Rku of 3 to 15.