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LEMFÖRDER Suspension Joints
Precise Mobility

Suspension joints are integrated into the control arms, pressed-in or flange-mounted. Alternatively, they can be pressed or screwed into the wheel carrier. A distinction is made between guide and suspension joints for passenger cars, vans and light commercial vehicles. While the guide joint generally transmits only longitudinal and lateral forces with a low proportion of vertical forces, the vehicle weight is additionally supported by the support joint.

Suspension joints are integrated into the control arms, pressed-in or flange-mounted. Alternatively, they can be pressed or screwed into the wheel carrier. A distinction is made between guide and suspension joints for passenger cars, vans and light commercial vehicles. While the guide joint generally transmits only longitudinal and lateral forces with a low proportion of vertical forces, the vehicle weight is additionally supported by the support joint.

Supporting joint and suspension ball joint

The most important wheel suspension designs include (wheel) suspension ball joints, supporting joints and cross-axis joints. These ball joints connect the wheel suspension control arms with the wheel carrier and, consequently, with the wheel.

While the suspension ball joint usually only transfers longitudinal and lateral forces with a low amount of vertical forces, the supporting joint also supports the vehicle weight (axial spring and damper forces).

LEMFÖRDER suspension ball joint

The most important wheel suspension designs include (wheel) suspension ball joints, supporting joints and cross-axis joints. These ball joints connect the wheel suspension control arms with the wheel carrier and, consequently, with the wheel.

While the suspension ball joint usually only transfers longitudinal and lateral forces with a low amount of vertical forces, the supporting joint also supports the vehicle weight (axial spring and damper forces).

LEMFÖRDER suspension ball joint
LEMFÖRDER suspension joints/suspension ball joints

Joint function: guiding the wheel

The (wheel) suspension ball joint establishes the connection and, consequently, the support between the front axle control arms and the axle body/carrier (steering knuckle). Its task is to guide the wheel carrier and wheel, to enable the spring deflection of the wheel and to permit the steering movement on the front axle. It is always installed at the triangle apex of the control arm. The height fixation is performed via the ball stud. The ball joint should be easy to move, low in flexibility, maintenance-free and noise-insulating. These four, partly contradicting, requirements are met at LEMFÖRDER, for instance thanks to premium plastic shells in the joint.

LEMFÖRDER suspension joints/suspension ball joints

Joint function: guiding the wheel

The (wheel) suspension ball joint establishes the connection and, consequently, the support between the front axle control arms and the axle body/carrier (steering knuckle). Its task is to guide the wheel carrier and wheel, to enable the spring deflection of the wheel and to permit the steering movement on the front axle. It is always installed at the triangle apex of the control arm. The height fixation is performed via the ball stud. The ball joint should be easy to move, low in flexibility, maintenance-free and noise-insulating. These four, partly contradicting, requirements are met at LEMFÖRDER, for instance thanks to premium plastic shells in the joint.

LEMFÖRDER supporting joint

Joint function: guiding the wheel as well as carrying the body

In terms of design, the suspension ball joints and the supporting joints are only marginally different from one another. The supporting joint is located on the opposite side of the suspension ball joint, assembled in the steering knuckle. It absorbs forces in all directions and can be installed in a suspended or vertical manner. The ball joint housing is usually attached in the control arm and the ball stud is usually attached on the inside of the steering knuckle via its conical taper or a cylindrical dog point. Advantage: This mounting is maintenance-free.

LEMFÖRDER supporting joint

Joint function: guiding the wheel as well as carrying the body

In terms of design, the suspension ball joints and the supporting joints are only marginally different from one another. The supporting joint is located on the opposite side of the suspension ball joint, assembled in the steering knuckle. It absorbs forces in all directions and can be installed in a suspended or vertical manner. The ball joint housing is usually attached in the control arm and the ball stud is usually attached on the inside of the steering knuckle via its conical taper or a cylindrical dog point. Advantage: This mounting is maintenance-free.

LEMFÖRDER cross-axis joint

Cross-axis joints – for special applications

Cross-axis joints are primarily installed on the rear axle. They consist of a ball with cylindrical taper on both sides and a continuous bore in the middle. Although they are similar to the ball joint in terms of function and structure, their anchorage corresponds to that of rubber bearings. In contrast to rubber bearings, cross-axis joints are able to transfer extremely high dynamic forces and have no aligning torque. Cross-axis joints are preferably used if a stiff control arm connection is desired – in sports cars or light commercial vehicles for instance.

LEMFÖRDER cross-axis joint

Cross-axis joints – for special applications

Cross-axis joints are primarily installed on the rear axle. They consist of a ball with cylindrical taper on both sides and a continuous bore in the middle. Although they are similar to the ball joint in terms of function and structure, their anchorage corresponds to that of rubber bearings. In contrast to rubber bearings, cross-axis joints are able to transfer extremely high dynamic forces and have no aligning torque. Cross-axis joints are preferably used if a stiff control arm connection is desired – in sports cars or light commercial vehicles for instance.

Quality for the workshop

A vehicle fitted with LEMFÖRDER parts throughout will respond with smoother steering and more dynamically than it would if it was fitted with replica parts. In the event of repair this should be considered.

  • Precision-engineered, hardened studs with rolled threads don’t just meet OEM design standards, they exceed them.
  • For an optimized product performance the radial and axial spring travel is measured to ensure the precise product dimension.
  • LEMFÖRDER consistently achieves significantly lower breakaway torque values – the force required to move the ball-pin when the steering wheel turns for the first time – than its competitors.

Quality for the workshop

A vehicle fitted with LEMFÖRDER parts throughout will respond with smoother steering and more dynamically than it would if it was fitted with replica parts. In the event of repair this should be considered.

  • Precision-engineered, hardened studs with rolled threads don’t just meet OEM design standards, they exceed them.
  • For an optimized product performance the radial and axial spring travel is measured to ensure the precise product dimension.
  • LEMFÖRDER consistently achieves significantly lower breakaway torque values – the force required to move the ball-pin when the steering wheel turns for the first time – than its competitors.

Further information

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Your Privacy

When you visit any web site, it may store or retrieve information on your browser, mostly in the form of cookies. This information might be about you, your preferences, your device or used to make the site work as you expect it to. The information does not usually identify you directly, but it can give you a more personalized web experience. You can choose not to allow some types of cookies. Click on the different category headings to find out more and change our default settings. However, you should know that blocking some types of cookies may impact your experience on the site and the services we are able to offer.

Technical Mandatory Cookies

These cookies are necessary for the website to function and cannot be switched off in our systems. They are usually only set in response to actions made by you which amount to a request for services, such as setting your privacy preferences, logging in or filling in forms. You can set your browser to block or alert you about these cookies, but some parts of the site will not then work. These cookies do not store any personally identifiable information.

Analytics Cookies

These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance.