Ongoing pricing pressure is forcing OEMs and parts suppliers to optimize 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 within 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 iglide® 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 iglide® 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 iglide® 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. 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.
How do iglide® plain bearings reduce noise?
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. Highly engineered polymers are 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.
Plain bearings are used in the interior of vehicles, for instance in hinges, car bonnet mechanisms and seats. Here there are often rough mounts and collared grooves. iglidur plain bearings calibrate themselves due to the effect of heat in the CDC process and ensure that they fit in place exactly.
If you choose cost-effective iglidur plain bearings, you decide in favour of a quiet, lubrication and corrosion-free solution. Electrically conductive iglide materials ensure an optimum coating result. Irrespective of whether your application is exposed to high temperatures, contact with media or wear-intensive conditions – iglide® plain bearings are nearly always a good alternative.
A rough mount or collared groove with a H10 or H11 nominal size range is located
An iglide® bearing with a sliding fit is mounted in the hole or in the collared groove
A pin or rivet with a cap is fitted in the bearing point
The fitted iglide bearing along with the pin or rivet undergo a Cathodic dip coating (CDC) process.
The bearing point is dried with heat, which allows the iglide bearing to calibrate itself (suitable for up to 220°C and a maximum drying duration of 60 minutes).
The result: a low-clearance bearing despite holes and pins with large tolerance.
igus® manufactures custom bearings in any shape daily, including flexible iglide® clip bearings for fast installation in sheet metal.
1) Active headrest with iglide RN293
2) Headrest height adjustment with iglide RN293
3) Lumbar support with iglide G and iglide GLW
4) Armrest with iglide M250 and iglide G
5) Seat actuators with iglide P210 and iglide X
6) Backrest tilt adjustment with iglide G
7) Horizontal seat adjustment with iglide RN293
8) Seat height adjustment with iglide M250, iglide K230 and RN89
What are the advantages of iglide® plain bearings in brake boosters?
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