Abstract: A play-free radial ball bearing, includes an inner bearing ring and two outer bearing rings which are disposed in spaced-apart relationship and define a common raceway. A spring element applies an axial force on one of the outer bearing rings to thereby press the outer bearing rings resiliently against one another. The outer bearing rings and the spring element are surrounded by a tolerance ring which is made of plastic material to provide a structural unit, whereby the tolerance ring has a shoulder on one end for radially surrounding the spring element and at least one retaining lug on another end for radially surrounding the other one of the outer bearing rings.

Abstract: An angular contact ball bearing of a steering shaft (27) of an automotive vehicle, said bearing comprising an inner bearing ring (11), an outer bearing ring (1) and bearing balls (7) arranged between the inner and outer bearing rings in rolling contact with raceways (14, 5) formed on the inner and outer bearing rings, the inner bearing ring (11) being received by an elastic tolerance ring (15) of a polymeric material, said bearing further comprising an inseparable assembly, wherein, a retaining ring (20) is arranged between the steering shaft (27) and the tolerance ring (15), the retaining ring (20) comprises circumferentially equi-spaced retaining elements (19) that project therefrom in axial direction and comprise radially outward directed retaining lugs (22) that overlap the outer bearing ring (1), the tolerance ring (15) comprises circumferentially equi-spaced clearances (18) for receiving the retaining elements (19), and the tolerance ring (15) extends in axial direction up to the end of a generally radi

Abstract: In a heat exchanger used especially as an exhaust heat exchanger, provision is made for tube sheets, the tubes of a tube bundle, and a housing to be shaped from stainless steel sheets. The tube sheets are formed as deep-drawn and stamped parts, each of which has a circumferential wall that projects outward beyond the ends of the tubes in the tube bundle. The walls are welded to the housing, and each of the walls is abutted by a diffuser.

Abstract: A play-free radial ball bearing in which the inner bearing ring is constructed in two parts, whereby at least one of the two bearing ring elements (4, 5) is axially and radially movable and the bearing outer ring (6, 23, 25) has a race (2) with a radius that is clearly larger that the radius of the bearing balls (1). Due to the significantly greater osculation of the outer race (2) in comparison to the bearing balls (1), a restricted tipping of the shaft with, at the same time, freedom from play in the bearing, is made possible in connection with the two part movable inner ring.

Abstract: A self-aligning ball bearing for steering shafts (7) of automotive vehicles having an elastic convexity (8) deviating from the circular shape and arranged in at least one peripheral section of at least one of the raceways (2, 4), preferably of the outer raceway (2), so that two adjacent bearing balls (5) are radially prestressed between the raceway convexity (8) and the facing raceway.