News dynamics

2023/03/07

What is the difference between a wheel hub and a brake drum?

Wheel hub: Wheel hub is also called rim, wheel cover, and wheel hub. The shape of the tire supported by the inner contour of the tire is a barrel shape. The metal part in the center is installed on the shaft. The wheel hub is different according to the diameter, length and width, and the forming method is different., The use of different materials is divided into many different types. In terms of classification, it can be roughly divided into two types: baking paint and electroplating. When choosing wheels, ordinary models mainly consider whether the heat dissipation is good, and do not pay much attention to the appearance. The process is basically processed by baking paint, that is, spraying and electric baking first, and the cost is relatively economical., Beautiful color, long storage time. Brake drum: The brake drum is the friction pair of the drum brake in the drum brake system. It has a high and stable friction coefficient, appropriate wear resistance, heat resistance, heat dissipation and heat capacity, and relatively high strength And stiffness, but it will become brittle after aging. The brake drum is an important part of the drum brake, similar to the brake disc in the disc brake. When braking, the piston applies pressure to the two half-moon shoes to make them lean against the inner wall of the tympanic chamber, thereby generating friction to stop the rotation of the wheel.

2023/03/07

What is the material of the brake drum?

The brake drum is a cast iron piece similar to a tambourine that is fixed to the tire and rotates at the same speed. When braking, the oil pressure is used to push the brake shoe to contact the inner edge of the brake drum, and the friction generated by the contact is used to suppress the rotation of the tire to achieve the purpose of braking. The drum brake is composed of a brake base plate, a brake wheel cylinder, a brake shoe and other related connecting rods, springs, pins and a brake drum. At present, it is only used on the rear wheel. Drum brakes have low cost and high absolute braking force, and are widely used in the rear wheels of small cars. However, its wear rate is high, so the overall cost is high.

2023/03/07

What is the role of the brake drum in car braking?

Brake drums are only used in low-end cars or trucks, and buses. It is part of the drum brake system. When braking, the piston exerts pressure on the two pairs of half-moon brake shoes to make them close to the tympanic wall, thereby generating friction to stop the wheel from rotating,

2023/03/07

Take you to understand the brake drum failure prevention measures

The heat conduction and heat dissipation of the internal structure of the automobile brake drum material and the external structure of the casting are two key issues. Therefore, automobile brake drum manufacturers should be modified according to the structure of the brake drum and increase the structural strength accordingly. For example, directly change the position of the car brake drum and the wheel side.

2023/03/07

Do the four brake pads need to be replaced together?

In many cases, the wear degree and service life of the brake pads are different before and after. Under normal driving conditions, the braking force of the brake pads will be relatively large, and the wear degree is often large, and the service life is short, generally 3-5,000. About kilometers need to be replaced; the rear brake pads bear less braking force and can be used for a longer time, generally 60,000-100,000 kilometers need to be replaced. Remove and replace the coaxial must be returned together, so that the braking force on both sides is symmetrical. If the front and rear brake pads are worn to a certain extent, four can also be replaced together.

2023/03/07

What causes the brake drum to overheat?

Car brake drum overheating, the main reasons are: 1. The clearance between the left and right brake drums and the brake pads is inconsistent; 2. The left and right tire pressures are inconsistent; 3. The left and right brake pipelines are blocked, resulting in different hydraulic pressure or air pressure on both sides;