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Diversified leaf spring suspensions are available (Germany / American / York suspension).
Monthly capacity: 4,000 sets suspension is available for semi-trailer.
Following axles with 8 holes and 10 holes are waiting for you to choose:
With the effort of 50 technicians, SUYU develops diversified axles with different sizes and types that have various applications. Meanwhile, owing to our strict quality control system, the product enjoys high quality and a good reputation all over the world.
Basically a parabolic spring is a spring that consists of two or more leaves. The leaves touch only in the center, where they are fixed to the axle and at the outer ends, where they are fixed to the vehicle. In between those two points the leaves do not touch each other as they do with conventional leaf springs.
Each leaf represents a complete spring in its self and will act as such. To enable the leaf spring is tapered, from the center (thick) to the outer ends (thin). This tapering is parabolic, it means that every centimeter (or inch) the thickness of the leaf decreases in an amount that relates to the square function of it's length.
This may sound complicated but in fact it is very simple. Every single leaf will have, more or less, the shape of a complete multi leaf spring and thus it's capable to cope with the same forces. This means that the ideal parabolic spring could have only one leaf, however, this type of "mono leaf" spring will have very limited articulation/weight ratio due to high internal stresses so a 2 or 3 leaf parabolic spring can divide the stresses more evenly across the other leaves and thus more axle movement is possible. That is why we designed 2 and 3 leaf springs. An other reason to increase the number of leaves on a parabolic spring is to increase the rate (load capacity). Because every leaf is one spring we can add or take out leaves without compromising the strength of the leaf it self. So for example we have a 3 leaf rear spring and we add one similar leaf the rate will go up for about 30% which means that the load capacity increases by +/- 30% (depending on the shackle effect)
Our cast iron brake block enjoys many advantages including hardness, impact strength and so on. It consists of two parts, the cast iron and the steel support.
SUYU can offer diversified train wheels like the casting wheel and forging wheel. After a series of productive progresses, such as vacuum refining for raw material, continuous casting process, heat treatment controlled by computer, tests by advanced inspection equipment, and CNC profiling, we can offer the product with the diameter ranging from 360mm to 1250mm.
The brake disc can be made of grey casting iron, forging steel or alloy steel. The product falls into categories of the wheel brake disc and the shaft brake disc and has applications on locomotive and coach.
SUYU provides railway coupling system and parts by the standards of YB, AAR, and UIC. The customized coupling system solution is also available.
The axle supports adopting many kinds of steel as raw material, such as, LZ50, JZ45, AAR Grade F, EA1N, EA1T, EA4T, IRS 16/95, and SFA60A. We accept axle orders of small quantity or of demanding complex designs on customized requirements.
The yield strength and fatigue limit of the material interact with each other. Generally speaking, higher yield strength comes with higher fatigue strength.
With the effort of 50 technicians, SUYU develops diversified axles with different sizes and types that have various applications. Meanwhile, owing to our strict quality control system, the product enjoys high quality and a good reputation all over the world.
Need reliable railway fastening solutions? Contact us today for more information!
SUYU can offer diversified train wheels like the casting wheel and forging wheel.
SUYU can provide a complete set of rail fastening system of SKL14, SKL12, elastic rail clip system, and Nabal clip system.
SUYU is a specialized rail fastening manufacturer based in China.
