Body in White

Coil springs

Today, coil springs are used in nearly every passenger car. Their primary function is to bear the weight of the vehicle and increase driving comfort.

In modern vehicles, this depends above all on the optimum combination of the following spring properties: minimum weight, optimum installation space, maximum sturdiness and minimal costs. We work together with our partners in the automotive industry on these issues.

Because different vehicles need different springs, we offer a wide range of coil springs.

Linear coil springs

The original form of the coil spring has a so-called linear spring characteristic. The shape of the coil ends determines the different types of coil springs. We produce springs with both curled-in ends and inclined ends.

Characteristics:

  • Economical
  • Wide scope of application

Barrel springs (mini-block springs)

The coils of barrel springs wind inside each other rather than on top of each other. When the ends are pressed together, the spring rate increases. Spring wire with tapered ends can be used to generate progressive characteristics.

Characteristics:

  • Linear and progressive characteristics
  • Low space requirement
  • Short installation length

Side load springs

Because of how they look when not under load, side load springs are also called banana springs. They are primarily used in McPherson axle designs. The advantages include reduced friction between the shock absorber pistons and their seal, better shock absorber responsiveness and, as a result, improved driving comfort.

Characteristics:

  • The springs compensate for the transverse forces that occur with McPherson spring struts,
  • relieve the transverse forces on the spring strut piston rod,
  • improve driving comfort, and
  • minimize friction.

ThermoTecSpring®

Vehicle suspension springs made of ThermoTecWire®, developed by thyssenkrupp are nearly 20% lighter than conventional suspension springs. This contributes to the lightweight construction of the suspension and, as a result, to reductions in fuel consumption and emissions. In addition, for our partners in the automotive industry, the space savings are critical – because ThermoTecSprings® are shorter than other springs.

Characteristics:

  • Up to 20% weight reduction in the springs
  • Less installation space required
  • Same service life even though the springs are lighter
  • Standard spring steel used
  • Service life several times longer at the same spring weight (robust version)