The axle is related to the load-bearing, braking, and driving of a vehicle, and is one of the most critical components on the vehicle. With the continuous development of vehicle technology, various types of axles have emerged one after another: those with stronger load-bearing capacity, more stable braking effects, and those with lighter axle weight The circular disc axle is one of them.

The so-called circular disc axle refers to an axle that combines the dual characteristics of a drum axle and a disc axle. From the appearance, this type of brake does not have a sealed brake drum, which exposes the brake pads directly in the air, just like a disc axle; From a structural perspective, the structure and braking principle of the brake pads are the same as those of the drum axle.

This type of brake is designed with two layers of internal and external brake pads, with a ventilation structure in the middle. When the car owner steps on the brake pedal, the internal brake pads are stretched outward, and the external brake pads are tightly held inward, forming a state of "inner support and outer hold". The two layers of brake pads rub and brake at the same time, resulting in greater braking force. At the same time, the double layer brake pads provide dual safety for the service brake, even if one layer of brake pads has problems, Another layer can also play a braking role.

In addition, the exposed design also determines its excellent heat dissipation ability. When the brake is exposed to the air, its heat dissipation performance is higher. The air guide design between the two layers of brake pads can also blow air into the brake interior with the rotation of the wheels, accelerating heat dissipation.

Overall, the disc brake can provide strong and stable braking force, as well as excellent and efficient heat dissipation capacity, making it very suitable for use on freight vehicles such as semi trailers and mid axle trailers.

But to this day, instead of being popularized, the disc type axle has begun to disappear. Why is this?

One of the reasons is that its category is not clear. The circular disc axle, with a disc type in its name, is more like a drum type in structure. Should it belong to a disc type or a drum type? Does the installation of three axle guardrails and three axle warehouse grilles meet regulatory requirements? Because the regulations do not clearly define the category of this type of brake, many car owners are worried about being fined after driving and dare not easily install and use it.

Another reason is that the principle of the disc type axle is indeed loud, but there is a lack of data support for its actual application effect. Especially when the disc type brake is exposed, sand and dust can easily enter the brake, affecting the braking effect and damaging the brake pads. If the vehicle frequently travels on more complex road conditions, the frequency of brake pad scrapping may also increase.

So, although the introduction of the Zhou Pan axle attracted the attention of many industry insiders and media coverage, the development trend has continued to decline. After all, for car owners, the principle is still the principle. Even if the principle is fancy and the actual data cannot withstand scrutiny, they will still not pay. Only when the product quality is qualified and can withstand the test of the market, will car owners compete to use it, And proactively help them open up the market.