1, rubber shock absorber can choose the shape, so that from top to bottom, left and right, front and rear stiffness in three directions through the damping element can be designed to be reasonable, which can greatly simplify the structure of shock absorber. 2, rubber shock absorbers with three directions of the deformation characteristics of the installation to allow greater error. 3 can be securely between rubber and metal combination. 4, the rubber has damping characteristics, and absorption of vibration energy into heat, and its ability to eliminate shock is much greater than metal, especially suitable for high-frequency vibration. 5, rubber shock absorber simple structure, easy maintenance, almost no repairs, no wear, no rust, no lubrication with oil, water, dust is not sensitive to the role, the use does not produce a sudden destruction, the use of safe and reliable low cost but long enough life. As with the above features rubber shock absorbers, taking in the motorcycle part of the bogie on the line is widely used. The application of electric locomotive of the central bearing rubber shock absorber rubber cone, axle rod elastomer rubber side bearing pile, motor suspension rubber mats, resilient wheels, flexible gear, air springs, rubber blocks transmission of the arch and ball joints , coupler rubber buffer and so on. Rubber shock absorbers used in locomotive, its main role is to bear the compressive stress, shear stress and torsion moment, and also to bear the stress of two or more complex role. Rubber shock absorber to each other has certain special properties, plays an important role. Increasing the speed of locomotive, the role of the sharp increase in the power lines, causing lines, tires and parts of the locomotive running a sharp component wear. Application of rubber shock absorber which is becoming increasingly popular.