Hub.
Car hub bearings used to be the most used in pairs of single row tapered roller or ball bearings. With the development of technology, car wheel hub unit has been widely used. The use range and usage of wheel bearing units are growing, and they have developed into the third generation: the first generation is composed of double row angular contact bearings. The second generation has a flange for fixing the bearing on the outer raceway, which can be simply inserted onto the axle and fixed with a nut. It makes car maintenance easier. The third generation of wheel hub bearing unit is a combination of bearing unit and anti-lock brake system. The hub unit is designed with an inner flange and an outer flange, the inner flange is bolted to the drive shaft, and the outer flange installs the entire bearing together.
There are three factors to consider when selecting wheel hubs.
size
Do not blindly increase the wheel hub. Some people in order to improve the performance of the car and increase the hub, in the case of the tire diameter unchanged, the big hub is bound to cooperate with wide and flat tires, the lateral swing of the car is small, stability has been improved, like a little water when bending, light passing. However, the flatter the tire, the thinner its thickness, the worse the shock absorption performance, and the greater the sacrifice must be made in terms of comfort. In addition, a little stone and other roadblocks, tires are easy to damage. Therefore, the cost of blindly increasing the wheel hub cannot be ignored. Generally speaking, it is most appropriate to increase one or two numbers according to the size of the original wheel hub.
three-distance
This means that when choosing, you can not pick your favorite shape at will, but also follow the advice of the technician to consider whether the three distances are appropriate.
shape
The complex structure and dense wheel hub is indeed beautiful and has a grade, but it is easy to be rejected or charged more money when washing the car because it is too troublesome to wash. The simple wheels are dynamic and clean. Of course, if you don't take the trouble, that's all right. Nowadays, the popular aluminum alloy wheels, compared with the iron cast wheels in the past, the degree of deformation resistance has been greatly improved, the weight is greatly reduced, the power loss of the car is small, the run is fast, the fuel economy and the heat dissipation is good, which is loved by the majority of owners. Here to remind a point, there are many car dealers in order to meet the tastes of owners, before selling cars, in advance to replace iron wheels with aluminum alloy wheels, but in the price is hard to add a sum. So from an economical point of view, when buying a car, do not care too much about the material of the wheel, anyway, you can change it according to your own style, and the price can also save a sum, why not?
Modification mistake
1, figure to buy fake wheel modification is a more important step in car modification, whether it is appearance modification or control performance improvement, the wheel has played an important role in which, a high-quality wheel, after rigorous production process and strict inspection, to ensure that its personality parameters indicators qualified. Of course, a set of genuine wheels are expensive, domestic production and domestic sales (there are export products) of enterprises are few, so the price of imported wheels are more expensive. So many modified players in order to save costs, choose the so-called "domestic" "Taiwan production" of fake wheels, which is completely undesirable, if it is a "small workshop" production of fake wheels, although there is not much difference in appearance and genuine wheels, but in weight, strength and other aspects are far from the safety indicators, There are often players in the use of "counterfeit" wheel when inexplicable cracks and deformation and other problems, and in the high-speed process, counterfeit is not enough to support such a large strength of the load, if there is a high-speed burst phenomenon, will directly affect the safety of the driver and passengers! Therefore, in particular, if economic conditions are temporarily not allowed, please carefully choose modified wheels, although the original "steel ring", "casting wheels" may not be beautiful and lightweight, but at least the safety is guaranteed. Wheel hub performance is generally forged wheel hub > cast wheel hub > steel wheel hub.
2, there is no correct choice of the right wheel hub for improving the appearance of the role is more obvious, but in the selection of the wheel hub, every detail should be taken into account, the parameters of the wheel hub will affect the use of the wheel hub and vehicle, PCD value is incorrect may not be able to install normally, ET value not only affects the installation and use, and may affect the future upgrade modification, For example, the original car is a single piston brake system, the owner intends to upgrade its multi-piston brake system in the future, and the ET value and hub size are too small will affect the normal installation, so when upgrading the brake system, it is necessary to replace or upgrade the hub twice.
3, incorrect installation of wheel hub many black heart businesses in providing modified wheel hub, will not prompt the owner of the size of the center hole diameter, if the size is smaller than the original size, naturally can not be installed, but if the size is larger than the original and did not take comparative measures, it will cause a different heart when the vehicle is driving, resulting in abnormal noise and shaking of the vehicle, In serious cases, it will directly affect the safety of the vehicle. If you really like the hub you like, and there is no suitable center hole size, if the size is too small, you can reaming, and the size is too large, you can choose some manufacturers to provide the center hole sleeve ring to correct.
4, feel that the larger the better Some people think that the modification of large-size wheels is called upgrading, and some people think that large-size wheels are more visual impact, but whether it is visual or performance, or choose the wheel size suitable for their vehicles is moderate. In terms of appearance, over-sized wheels make people feel that their feet are heavy, affecting the overall feeling. In terms of performance, it is necessary to have a balance, large size wheels, to match the upgrade of tires, to choose larger, wider tires, wide tires to provide more stable grip at the same time, strong friction will make your car start to speed up very slowly, and fuel consumption has significantly increased, and the hub size is too large, other parameters do not adjust the case, The steering of the vehicle also has a great impact, the wheel size of each car has a limit, if the pursuit of size, then the performance and control must pay a great sacrifice. Not only that, from the point of view of cost performance, the wheel with the same style and material, the larger the size of the larger the price, and the corresponding tire size also needs to be increased accordingly, and the price will rise accordingly
Daily maintenance methods
Aluminum alloy wheel with its beautiful and generous, safe and comfortable characteristics won the favor of more private owners. Almost all the new models use aluminum alloy wheels, and many owners have also replaced the steel rim wheels used in the original car with aluminum alloy wheels. Here, we introduce the maintenance method of aluminum alloy wheel: 1, when the temperature of the wheel is higher, it should be cleaned after natural cooling, and must not be cleaned with cold water. Otherwise, the aluminum alloy wheel will be damaged, and even the brake disc will be deformed and affect the braking effect. In addition, cleaning aluminum alloy wheels with detergent at high temperature will cause chemical reactions on the surface of the wheels, lose luster, and affect the appearance. 2, when the wheel is stained with difficult to remove asphalt, if the general cleaning agent does not help, the brush can be used to try to remove, here, to the private owners to introduce a prescription to remove asphalt: that is, the use of medicinal "active oil" rub, can obtain unexpected effects, may wish to try. 3, if the place where the vehicle is wet, the wheel should be cleaned frequently to avoid salt corrosion on the aluminum surface. 4, if necessary, after cleaning, the hub can be waxed and maintained to make its luster forever.
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