For modern seat adjustment: Bearings and cable guides from one source

A modern car seat today is very complex and has undergone enormous technological progress in recent years. More and more electronic adjustment options (e.g. seat height adjustment) have found their way into the series applications of car manufacturers by means of actuators. Noise (NVH, BSR) and weight minimisation are essential requirements of every modern seat design. Seating systems should be quietly adjustable and lightweight while maximising comfort and safety.

On this page, you will find the following:

Application points for products in vehicle seats | Customised components | Free sample box | Brochure to download | Further information

motion plastics in the car seat adjustment

Areas of application in the seat

Plain bearing in the seat height adjustment

Seat height adjustment:
Seat height adjustment in cars is an important component for comfort and safety. In addition, the development of autonomous vehicles and the demand for car-sharing services is noticeably increasing. As a result, the number of different drivers in the same car is also growing so that seats are being adjusted more than ever before. This is also a reason for the increasing use of electric seat adjustment using actuators and compact motors.

Plain bearing in the back rest adjustment

Backrest adjustment—manual or electric—is standard in vehicles, ensuring comfort and safety. Modern seat designs prioritize noise and weight reduction, lubricant-free operation, and durability. igus iglidur plain bearings meet these needs with low friction and wear, requiring no lubrication. During development, they passed crash and endurance tests across -20°C to +80°C without failure or maintenance. These bearings also meet interior fogging standards and help dampen seat vibrations.

Gears and plain bearings in the backrest adjustment system

Lead screw support in lumbar adjustment

What is required: Thrust washers for lead screw support in the drive
Requirements: Noise minimisation, smooth running, corrosion-free, low fogging, high load capacity with high p x v value = 1, lightweight, low coefficient of friction, matched to mating partner made of POM and PP GF30
Matching products: Thrust washers iglidur W300
Success for the customer: The thrust washers are a cost-effective and smoother-running alternative for thrust bearings

For lumbar adjustment:
Current trends in the automotive industry call for new, dynamic interior concepts with a greater focus on the comfort of vehicle occupants. One comfort component in the seat is the electric lumbar adjustment. By supporting the lumbar vertebrae, it helps to maintain an upright posture, relieve strain on the muscles and prevent back pain. In the drive for the individual adjustment of the backrest contour, iglidur plain bearings minimise noise and ensure smooth running. Optimised for friction and wear, they have a low coefficient of sliding friction and a long service life. Thanks to the solid lubricants contained in the material, the effort and costs for additional lubrication are eliminated.

Plain bearing in the leg rest

What is needed: A plain bearing solution in the vehicle interior for adjusting the car seat leg rest, comfort seat extension, extended leg rest
Requirements: Smooth running, low coefficient of friction, high load capacity, lightweight, low fogging, noise minimisation
Matching products: Plain bearing from iglidur M250 and iglidur G
Success for the customer: iglidur plain bearings enable quiet adjustments by preventing disruptive BSR and NVH noises within the seat hinges. Made from tribologically optimised polymers, they are up to five times lighter than corresponding metal bearings.

For ischium support:
For greater comfort, car seats are fitted with adjustable seat extensions or leg supports. These and many other adjustment mechanisms are also frequently offered in captain's chairs.

Slide ring in swivel brackets

Swivelling seats, common in campers and commercial vehicles, are becoming more relevant in passenger cars with the rise of autonomous driving. They optimize space by allowing 360° rotation, creating flexible seating arrangements. iglidur sliding rings enable smooth manual or electric adjustment with low torque, thanks to their low friction and integrated solid lubricants—no maintenance or extra lubrication needed. Validated in endurance tests from -20°C to +80°C, materials like iglidur J and RN293 meet fogging standards and help dampen vibrations in the seat system.

Plain bearings in compact motors for electric seat adjusters

More and more electronic adjustment options are finding their way into the series applications of car manufacturers by means of actuators. Noise and weight minimisation are essential requirements for any modern seat design. igus plain bearings are lighter and quieter than conventional solutions. Their dry lubricants ensure a long service life without external lubrication.
Compact motors are used in the following seat applications, among others: seat length adjustment, seat tilt, seat height adjustment, backrest adjustment, headrest adjustment, lumbar support, haptic seat feedback, lumbar support, headrest adjustment, and seat belt tensioner.

Plain bearings and gears in seat actuators

Dynamic cable protection in seat linear and height adjustment

What is needed: A dynamic cable protection for linear seat adjustment and seat height adjustment
Requirements: Radius protection of the cable, smooth running, contacting of the cable bundles in the tight installation space, easy installation and reduction of installation time, insertion of the harnessed cable with connector
Suitable products: e-chains E2 micro or easy chain series E06
Success for the customer: The reduced installation time is one of the main features of the easy chain energy chain. Its elastic and robust material igumid NB also offers optimum flexibility and a UL94-V2 classification

The use of energy chain as dynamic cable protection ensures the minimum bend radius of the cable and extends the service life of the complete system. The compact components and easy installation offer advantages during initial installation and subsequent repair work, as the cable and chain are easy to replace.

e-chain in the car seat for linear adjustment

Dynamic cable protection for rotating and swivelling seats

iglidur special parts for application in car seats

Customised components

Whether prototype construction and small batches in 3D printing, machined or milled from bar stock or high-volume production from the injection mould: we manufacture customer-specific special designs. We will be happy to advise you on which process is best for your case, both technically and economically.

Find out more about special and drawing parts