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Basic Introduction and Classification of Radial Tires

Ⅰ. Basic introduction of radial tires

The cord arrangement of radial tire carcass is different from that of bias tire. The cord arrangement of radial tire is not crossed with each other, but nearly parallel to the cross section of outer tire. Like the earth meridian, the cord angle is small, generally 0 ° and there is no intersection point between the cord of carcass. When the tire is running, the stress around the crown increases, which will cause circumferential extension and the radial crack on the carcass. Therefore, the buffer layer of radial tire adopts the contact cord layer arranged close to the circumferential direction, which intersects with the tire cord at an angle of 90 degrees, generally 70 degrees to 78 degrees, forming a rigid annular belt that can hardly stretch, fixing the whole tire and limiting the circumferential deformation of the tire. This buffer layer bears 60%-70% internal stress of the whole tire and becomes the main stress bearing part of radial tire, so it is called belt layer of radial tire.

Ⅱ. Classification of radial tires

According to different materials, there are different types of tyre which can be divided into three categories: all-steel radial tire, semi-steel radial tire and all-fiber radial tire. What are the difference among these three kinds of tyres? As one of the leading OTR tire manufacturers, let us give you a brief explanation.

1. All-steel radial tire

The belt of all-steel radial tire adopts steel cord. This kind of tire is generally used in heavy-duty and construction machinery vehicles.

2. Semi-steel radial tire

The carcass of semi-steel radial tire is made of rayon or other fibers, and the belt is made of steel cord. This type of radial tire is generally used in cars or light trucks, such as buses.

3. All-fiber radial tire

The carcass and belt of all-fiber radial tire are made of rayon or other fiber cord, and the belt cord should be made of low elongation cord. This kind of radial tire is generally used in low-speed cars or tractors.

Radial tire has reasonable structure and superior performance than bias tire. It has many excellent characteristics: good wear resistance and puncture resistance; good cushioning performance, low driving temperature; good stability and safety performance; long driving mileage and high economic efficiency.