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About company

"Siberian Bushing" is the oldest and most reputable Russian manufacturer of Polyurethane suspension parts. Since 2000 "Siberian Bushing" was the first suspension parts manufacturer at the Russian market, who offered to car owners products with a quality equal to OEM parts. Since that time, the company is the legislator of a new approach to the components of the car suspension in Russia and CIS.

Polyurethane vs Rubber

Rubber suspension parts or PU suspension parts? Which should you use?

Both Rubber and PU parts have their pros, and both have their cons.

In car suspension parts world, the majority of decisions comes down to these two materials and the inevitable question: which one is better for your car?

We will try to explain the pros and cons of both materials below Read more...

Principal distinctions from other manufacturers:

Manufactured from the best durable polyurethane-based elastomers that increase the service life of the parts, serving your car two-tree times longer than rubber analogues. Unlike the cheaper and obsolete rubber replacement parts, our parts withstand widest range of operating temperatures, stay flexible and durable even under hard loads and in extreme driving conditions. Ozone, oil and solvents resistant. Wear-out, tear-off and cuts resistant.
All mount sizes (inner sleeve I.D. etc.) match the original ones.
If not specified, the default polyurethane hardness is 65 (Shore A) that is equivalent to original rubber material. This provides safe and comfort driving, meantime increasing the responsiveness of your car. The parts are made separately from arms and steering racks, while genuine parts are often combined with the unit, resulting in customers' overpaying when replacing. The parts are made of PU that is a widely used material to manufacture parts that are capable to withstand heavy-duty conditions. Read more
Life in the North - is the existence on the edge of the Ecumene – the probable inhabited world. During about six months of the year it is enough to spend half an hour in the outdoors without clothes to freeze. Here are the harshest conditions for a life on Earth: nowhere in a desert healthy person dies within 30 minutes exposure to the air. The cold affects both people and technics. The average winter temperature in Siberia drops down to – 50 degrees Celsius. Here are the most severe road and weather conditions in the world.

Car suspension

Automotive suspension is designed for the elastic connection between the wheels and the vehicle body, and for the pothole vibration damping. Suspension should provide comfort driving (smooth ride), traffic safety and cornering stability. Suspension characteristics depend on the parameters and the interaction of individual components, the type and the stiffness of the elastic elements, stabilizers, arms, dampers, engine mounts, wheelbase, track, and especially tires. Read more

Technology of manufacturing

Technology of polyurethane manufacturing enables to produce parts with a variety of characteristics that can not be obtained by using other materials such as rubber. Products of polyurethane are made using a complex, costly and resource-intensive technology that differs from that for rubber counterparts, so the cost of such details is higher. Making certain conditions in production facilities, special surface preparation fittings, temperature control at all stages of production, strict adherence to the proportions in the preparation of raw materials and other components of the process chain allows to manufacture the parts of superior performance. Read more

Bushings removal and installation

This is a simple operation for those, who have the hydraulic press, the hubs tooling and the skills of such work. Tampering with the tool due to a lack of skills, or lack of the necessary tools are associated with the risk of damaging the housing bore in the arm or thrust, as well as damaging the new part. Before beginning the work, pay attention to the location of replacing part in the housing bore. Placement of the Bushing, depth of pressing and other features are important for proper operation of the suspension. Mark the arm and the old part to indicate the correct placement of the bushing. Before installing a new part, mark it the same way as old one.

This is a simple operation for those, who have the hydraulic press, the hubs tooling and the skills of such work. Tampering with the tool due to a lack of skills, or lack of the necessary tools are associated with the risk of damaging the housing bore in the arm or thrust, as well as damaging the new part.

Before beginning the work, pay attention to the location of replacing part in the housing bore. Placement of the Bushing, depth of pressing and other features are important for proper operation of the suspension. Mark the arm and the old part to indicate the correct placement of the bushing. Before installing a new part, mark it the same way as old one. Read more

The structure of bushing

Bushing consists of two metal sleeves of different diameters arranged on the same axis one inside the other and separated by a layer of elastomer. This is a concept of Bushing structure. But in fact, despite the general working principle, Bushings are differ from each other. Design features are determined by structure of the unit, where Bushing is used and by the estimated loads. The presence or absence of compensation (reverse) holes, offset of metal sleeves, torsional work or stress work - all this make Bushings not like each other. To add more comfort, Bushings can be made fluid-filled, ie the elastomer component has a fluid-filled cavities inside. Read more

Bushings for suspension

Bushings in the suspension of the car have a purpose to isolate the body from the noise and vibrations generated while driving, and also to protect suspension components from wear at mounting points, provide their stable location and reliable connection to the car body. Forms of bushings are very diverse and depend on the design features of a particular brand of car. In contrast to the Bushings, bushings are not reinforced (with metal) elements - this significantly reduces the service life and makes them expendable. Read more

Use of polyurethane parts in the automotive suspension

Technological progress has not bypassed the most popular means of transport - car. With advanced technologies the car becomes more complex. Suspension of the car has undergone a lot of changes since the invention of the wheel. Many different kinds of automotive suspension components are developed, the electronic control of the suspension is in use, and all this for the implementation of trivial tasks of suspension - ensuring smooth driving and safety. Use of the parts from polyurethane in a vehicle suspension improves its characteristics. Driving control increases, reduces the response time of a vehicle on the movement of the steering wheel, ie, the steering becomes "sharper". Reduces the body roll when cornering. The geometry of the suspension becomes more stable. All this directly takes a positive effects on the safety and comfort of driving. Polyurethane saves its characteristics over a wide temperature range, high endurance allows to exploit successfully the polyurethane parts in different climatic conditions. The interval between overhauls increases, the costs associated with repair and maintenance of the suspension are reduced. Competent and professional implementation (selection, installation, operation) of polyurethane parts is a key to a long and trouble-free operation of your vehicle suspension. For a deeper familiarization with the material they are made of, we give below a specification of polyurethane and a comparison of its characteristics with those of rubber.
Name of physical / mechanical indicator Polyurethane Rubber
Operating temperature range, °С / °F -60 °С ~ +120 °С / -76 °F ~ 248 °F -35 °С ~ +150 °С / -31 °F ~ 302 °F
Shore A hardness 65 - 85 (programmable parameter)  65 - 80 
Rebound elasticity (%) 40 30
100% Modulus (Mpa) 2,8  1,2
300% Modulus (Mpa) 6,6 fails the test
Ultimate tensile strength (kg/cm²) 350 115
Tensile elongation (%) 540 300
Type C tear strength (N/mm) 50 20
Abrasion resistance 10 2
PU is a polymer with unique properties, widely used to make parts for very tough operating conditions. Because of a high price and uncertain production technology, polyurethane is mainly used for especially important units, where usage of rubber is unreasonable due to the short service life and quite average operating characteristics. The latest achievements in chemistry allowed to DESIGN polyurethane properties for special purposes in the industry. Suspension bushings, these are the most vivid examples of PU use in a car. PU parts perfectly withstand great alternating loads in hard operating conditions and do not lose its characteristics for many years. Read more