Comparison of Trailer Disc Brake and Trailer Brake Drum

　　Along with the emergence of a series of problems, the card friends also began to question the brake system of the disc brake and the drum brake, then let us talk about the comparative advantage between the Trailer Disc Brake and the drum brake. Let's go.

Trailer Disc Brake

　　Here, we only compare the advantages of the disc brakes and the Trailer Brake Drum system alone, without suspension components and hydraulic retarders and tires.

　　Drum brake

　　The drum brake is the earliest brake system applied to the vehicle. The brake drum is mounted on the wheel and rotates with the wheel. The brake pad is mounted inside. When braking, the brake piston will push the brake pad and the brake drum outward, to achieve the effect of braking.

　　Advantages: Drum brakes are inexpensive to manufacture and conform to traditional designs. For heavy-duty vehicles, because the speed is generally not very high, the brake shoes are also more durable than disc brakes, and the drums are obtained with the same braking torque. Brake drums have a much smaller diameter than discs, so many heavy-duty vehicles still use a four-wheel drum design.

　　Disadvantages: The drum type is large, but the heat attenuation is obvious, and the heat dissipation is poor. Since the brake working mechanism is enclosed in the brake drum, the contact surface of the brake drum with the brake pad after being heated and expanded will become smaller, and the heat after continuous braking Can not be quickly dissipated, affecting the braking efficiency, and may also cause problems such as axle damage.

　　Disc brake

　　Compared with the drum brakes, the disc brakes appeared relatively late, but its development speed is very fast. At present, many of the high-end models in China have begun to configure the Trailer Electric Brake. The disc brake uses a stationary brake disc to clamp the brake disc rotating with the tire to generate friction, so that the wheel rotation speed is reduced to achieve a deceleration effect.

　　Advantages: The friction of the disc brake is better than that of the drum brake. When the brake is continuously applied, the brake will not be degraded and the brake will fail. Secondly, the change in the size of the brake disc after it is heated does not increase the stroke of the brake pedal.

　　Then the disc brake system reacts quickly and can perform high-frequency braking action, which is more in line with the requirements of the ABS/EBS system. The last disc brake does not have the automatic brake function of the drum brake, so the brake force of the left and right wheels is relatively average.

　　Disadvantages: Compared with drum brakes, the price of disc brakes is more expensive. At the same time, compared with the drum brake under the same size brake disc, the disc brake has a weaker braking force than the drum brake, so the disc brake must be used under other auxiliary brakes. For trucks, disc brakes are not so advantageous, and the brake torque of the drum brakes is good.

　　Indeed, in addition to the dangerous chemicals models, the drum brakes are almost always used in other models. But here we need to emphasize that this is not to say that disc brakes are worse than drum brakes because disc brakes must have auxiliary brakes and matching suspensions and in a series of fully equipped cases, the discs Brake will also be more advantageous.