Ongoing pricing pressure is forcing OEMs and parts suppliers to optimise their costs continually. Low-cost tribo-polymers are a commonly used alternative to expensive metal bearings.
Today, almost every motor vehicle that is made contains polymer bearings as a substitute for metal plain bearings and rolling bearings. Uses range from seat systems to thermally stressful applications in the engine compartment, in shift forks for gearboxes, in coolant pumps, or in the powertrain.
Why are polymer bearings more cost-effective than metal rolled bearings?
Legal requirements are necessitating the continuous reduction of vehicle emissions. One way of achieving this is vehicle weight reduction. This results in a further advantage: less weight leads to less fuel consumption.
A modern iglidur polymer bearing is up to 80% lighter than a conventional metal bearing. The number of bearing points has grown continually alongside the increase in vehicle complexity. This means that weight is an important factor to be considered when the bearing material is selected.
This is where iglidur polymer bearings display their advantage: they weigh less than metal bearings and therefore contribute towards the reduction of carbon-dioxide emissions. In addition, considerably less crude oil and therefore less energy is needed for their manufacture. Even in use, they do not require any additional lubricant.
For alternative drive concepts as well, the advantages of iglidur bearings are decisive. This is where lightweight and extremely quiet components that generate less unpleasant noise during operation and enhance driving comfort are called for.
BSR are all noises that are produced by components and assemblies in the motor vehicle. BSR testing, also called a noise and rattle test, is an acoustic method from the automotive industry and is used to measure the volume of these noises. A realistic situation with corresponding vibrations is simulated and the volume of the noise is then measured. The technical challenge for the vehicle and component engineers is to identify the 'noisy' components and replace them with a quieter solution wherever possible.
The expectations of the OEMs in this context are increasing continually. In the case of alternative drives such as the hybrid or electric motor, the noise of the drive is reduced, as a result of which noises inside the vehicle are masked to a much lesser extent by a loud combustion engine. At the same time, it is becoming quieter and quieter inside motor vehicles.
Noises always arise where components interact with each other, in other words where friction occurs. With the tribologically optimised high-performance polymers from igus, you achieve an especially low coefficient of friction and therefore a quiet application. Whether in vehicle seats, hinges or actuators, the variety of applications for our iglidur plain bearings inside vehicles is great.
Polymer is characterised by the fact that, unlike metal, it has a damping effect. In applications involving severe vibrational stress, a polymer bearing solution helps to reduce noise inside motor vehicles. The range of materials developed by igus includes materials that have especially good damping properties.
Roughly stamped mount or roughly stamped collared groove with a H10 or H11 nominal size range.
An iglidur plain bearing with sliding fit is mounted in the hole or in the collared groove.
Pin or rivet with cap is fitted in the bearing point.
CDC (cathodic dip coating) is carried out with the fitted iglidur bearing and with the pin or rivet.
The bearing point is dried. Due to the effect of heat, the iglidur plain bearings calibrates itself in the bearing point. Suitable for up to 220°C and a maximum drying duration of 60 minutes.
The result: low-clearance bearing support in spite of holes and pins with large tolerance.
Thanks to our modern injection-moulding method, almost any geometry can be made in the desired iglidur plain bearing. As a flexible iglidur clip bearing, flange bushing or double flange bushing specifically for a quick installation in sheet metal. Individual special solutions made of plastic in the desired shape, quantity and material are also possible. Moreover, we can provide you with your desired special geometry within 48 hours as a sample for your tests.
Convince yourself of the quality of our iglidur plain bearings and request the free plain bearing sample box now. The sample box contains:
Inside and outside: our dry-tech polymer bearing technology shows its advantages in many places in the car.