Abstract: A stabilizer bar for a chassis of a motor vehicle comprises a torsion spring portion and two arms bent away from the torsion spring portion; wherein the arms each comprise a formed end portion with a through-opening and a tubular portion, wherein the torsion spring portion comprises a hardened structure with a strength of at least 1000 MPa; and wherein the formed end portions comprise a hardened structure with a strength of at least 800 MPa. A process of producing a corresponding stabilizer is further disclosed.

Abstract: A spring assembly comprises a spring with a coating, a spring retainer made of plastic material, an adhesive layer by which the spring and the spring retainer are bounded adhesively to one another, wherein the hardness of the adhesive layer is lower than the hardness of the coating. Further, a process of producing such a spring assembly is provided.

Abstract: A stabilizer bar for a chassis of a motor vehicle comprises a torsion spring portion and two arms bent away from the torsion spring portion; wherein the arms each comprise a formed end portion with a through-opening and a tubular portion, wherein the torsion spring portion comprises a hardened structure with a strength of at least 1000 MPa; and wherein the formed end portions comprise a hardened structure with a strength of at least 800 MPa. A process of producing a corresponding stabilizer is further disclosed.

Abstract: A spring assembly comprises a spring with a coating, a spring retainer made of plastic material, an adhesive layer by which the spring and the spring retainer are bounded adhesively to one another, wherein the hardness of the adhesive layer is lower than the hardness of the coating. Further, a process of producing such a spring assembly is provided.

Abstract: A helical compression spring (3) with two end turns (7) and a transition area adjoining each end turn (7) as an axle spring for wheel suspensions of motor vehicles, for example, for wheel suspensions with a wheel-guiding MacPherson strut unit (5) which has a helical compression spring (3) and a shock absorber (4), and which is connected, on the one hand, to the body (1), and on the other hand, to the wheel (2), and with a suspension arm (6). The helical compression spring (3) has its vibration strength and the service life greatly increased by the end turns (7) and/or transition regions being machined by worked hardening by rolling and/or by work hardening by hammering.