In any car there is a bignumber of rubber components. These are bushings for various purposes, sealing rings, covers, carpets, mud flaps, and, of course, silent blocks. Under the latter understand the product of two metal bushings, one of which is of smaller diameter and placed inside the other, connected to each other with rubber. The sizes of silent blocks vary in a wide range.
Due to the fact that the tires are fast enoughwears out and does not work well at low temperatures, it is being tried to be replaced with a more stable and durable material, such as polyurethane. Polyurethane silent blocks, reviews of which do not have time to scatter on the Internet, will be the subject of research in this article. Consider the positive aspects of these products, their difference from rubber competitors, properties, types and methods of production.
For a clearer comparison and understanding,designate an appointment. Hob as a rubber-metal sleeve in the lever is a link between the suspension elements of the car. It depends on the flexibility, elasticity and reliability of the connections between the levers. When receiving a load, striking one of the connecting levers, the silent block dampens it and transmits only a part of the vibrations.
Useful properties of silent blocks cause their widespread use in the car. They can be found:
To make the product more clearfrom polyurethane, consider its properties. First of all, polyurethane is an artificially created synthetic elastomer. Depending on the modes of manufacturing technology and the adjustable amount of the constituent components, several types of material can be obtained at the exit. At the same time, the strength of the simplest variant is 4 times the rubber strength. The material is not afraid to work in aggressive environments. The operating temperature is in the range of -60 to +80 degrees Celsius.
Polyurethane silent blocks reviews have the mostpositive. Of course, there are plenty of negative ones, which are explained by some of the flaws in the material explained below. But among the advantages should be highlighted:
The strength of polyurethane silent blocksThis is due not only to the fact that the material itself is strong, but also to the fact that the connection between the metal and polyurethane is also significant and superior to rubber. That is why there are practically no delaminations among the plugs of this material. At low temperatures, the polyurethane does not dubeet and ages much older when compared with rubber. As we can see, there are a lot of advantages, but what about the disadvantages?
Despite the many positive pointspolyurethane silent blocks have some drawbacks. The most important of them - the cost. Prices for such silent blocks are at least 2 times higher than prices for rubber analogues. And the stronger type of polyurethane, the greater the difference. For example, a silent block made of polyurethane for a foreign car may have a price of 2500 rubles, while a native rubber equivalent will cost 500 rubles.
The second point that reduces the amountpeople using such products is stiffness. Suspension on polyurethane bushings well suited for a sports car. For a simple passenger car, the joy of driving can be significantly reduced due to the tight grip of polyurethane. That is why this material is used much less frequently for engine pads.
It is also worth noting that polyurethaneSilent reviews in winter are worse due to squeak. And this moment actually takes place, since polyurethane silent blocks, unlike rubber, always need to be lubricated during installation.
With all this, buying polyurethane products,mandatory need to examine suppliers. The production process is not so complicated, and there are a lot of enterprises engaged in the manufacture of material. And, of course, the quality of different manufacturers may vary significantly. And such an indicator as the price, in this case, does not help much. Polyurethane bushings, reviews of which are consistently good, have the best quality.
In a short period of time, polyurethane bushings for VAZ, GAZ, UAZ and foreign cars won their market share. Among the manufacturing companies, it is worth highlighting:
The company "Fulcrum" has only positivereviews and supplies polyurethane products since 2000. Silent blocks of levers, suspensions, shock absorber bushings, stabilizers, and many others are needed to replace the product. Two other firms are younger, but no less ambitious. A large number of polyurethane products receives more and more feedback and a variety of reviews.
Popular products from polyurethane are soattract attention, which cause the desire to independently produce them. It would seem that it could be easier: take the finished powder from the necessary components and, having sustained the desired temperature and pressure, to obtain the desired elastomer. Having a form, you can pour polyurethane in the liquid phase and at the exit to get, for example, rear silent blocks.
In reality, everything is not so rosy.Without special equipment quality products can not be obtained. But only excellent quality and elegant properties attract first of all. That is why there are not so many famous manufacturers. Knowing the real reviews, it is easy enough to determine for yourself the right supplier.
Сразу следует сказать, что качественные it is almost impossible to make polyurethane products by yourself. In addition to specialized metal processing machines, it is necessary to have equipment and facilities for producing polyurethane. In the home-made way, only an elastomer itself can be obtained at home, but its quality cannot be compared with industrial products.
The same rear silent blocks on cars of anymanufacturer have hard-coded parameters. Not every industrial production is able to obtain a product with the same characteristics. In addition, the smaller the batch of products, the higher the final cost.
Silentblock - a common element indesigns of any car. Therefore, the use of polyurethane silent blocks is not limited to foreign cars, they are also used in domestic cars. Most polyurethane products are valued in sports cars, as there is a need for a greater margin of safety, which does not give rubber. The most solid polyurethane silent blocks are used in sports suspenders; they receive well-deserved reviews.
The next category of cars in whichpolyurethane is well proven, are SUVs. Regular tires wear out pretty quickly here and do not fulfill the functions incorporated in it. Hobs levers, stabilizer bushings - everything goes with a bang.
Отечественные автомобили по использованию polyurethane products are in last place, and the place is determined by the reviews. After all, by the number of sold volumes, our motorists will give odds to foreign cars. WHA bushings are used in the same quantities. And many people want to check the durability of polyurethane on your car.
The fleet of domestic cars includes bothpassenger and cargo-and-passenger and off-road and cargo. At the same time, the VAZ machines received the greatest use of polyurethane. Polyurethane bushings on the "Niva" work well in all weather conditions and extend the time until the next repair. VAZ-2121 is a popular low-cost model for remote roads and camping conditions. Investing in a polyurethane suspension, according to reviews, is justified.
Polyurethane bushings on the VAZ-2107 alsopossess such positive qualities as wear resistance, long operation and improved controllability. At the same time, the Russian classics gains extra hardness, which can alienate lovers of a comfortable ride. After all, rubber as a softer material gives a feeling of softness and comfort, which is not enough for everyone on domestic vehicles.
Among the manufacturers of polyurethane for Russiancars stand out brand "SS20 Sport". Polyurethane silent blocks (VAZ) have a bright red color for a sports suspension and classic yellow for standard versions. The increased stiffness of the SS20 Sport series guarantees maximum controllability and the largest supply of durability and service life.
Polyurethane bushings on the VAZ-2107, GAZ, UAZ and even on foreign cars may have different colors. And if the yellow color has already become familiar, then red, blue and green can confuse from the first.
Polyurethane itself does not initially have a color.Dyes are added specifically to label a particular composition. Therefore, to determine the properties of your favorite, for example, blue silent block, you must read the description of the product. Different manufacturers under the same color can produce goods with different physicochemical properties.
Unfortunately, there are no uniform standards for polyurethane products. However, yellow polyurethane silent blocks, according to reviews, are considered the softest.
Many car enthusiasts after viewing advertisements aboutpolyurethane began to use polyurethane silent blocks in their cars. Reviews VAZ-2110 or Toyota did not have much difference. The general opinion has become much tougher. And if at the same time save and take a polyurethane kit cheaper, you can buy low-quality products.
The best reviews are written by sports car owners who operate vehicles on a flat road. In cases with irregularities, the views of car owners were reversed.
In order for polyurethane bushings to work exactly as they should, you need to follow a number of recommendations.
First of all, before installing the silent blockit is necessary to lubricate, for example, lithol. This will add surface elasticity and reduce the creak that everyone dislikes. This is especially true for the use of products at low temperatures.
The second point is the pre-tighteningsuspension before test drive for running. In quiet mode, polyurethane bushings on the "Niva", for example, take their places in fact and take working form. And only after running all the bolts tightened completely.
A long argument about which is better:rubber or polyurethane in silent blocks, you can forget. There are pros and cons on each side. So, rubber attracts primarily with its softness and elasticity. At the same time, the material strongly dubeet in winter and has a short service life. Loses before polyurethane and in work in aggressive environments.
Polyurethane, according to reviews, is indispensable for sportssuspension, where you need good handling and long life. But already on uneven road realities, a polyurethane front silent block will deliver some inconvenience to the entire front suspension.
Подводя итог, следует отметить, что polyurethane silent blocks have high attractiveness and remarkable properties. With proper selection, which takes into account the operating conditions, as well as with proper installation, polyurethane analogues will last much longer than native rubber products.
