Front Wheel Hub for Liuqi Chenglong X8 Truck Parts QY132X8-3103015D

Front Wheel Hub for Liuqi Chenglong X8 Truck Parts QY132X8-3103015D

How drum brakes work:

Drum brakes mainly consist of brake base plates, brake drums, brake shoes, return springs, compression wheels and other components.

When braking, by stepping on the pedal and using the lever principle, the force of the push rod acts on the brake master cylinder. After the pressure of the brake fluid is amplified and pushes the brake cylinder, the pistons at both ends of the brake cylinder will move at the same time. The thrust with equal force is applied to the shoe ends of the left and right brake shoes. The other ends of the two brake shoes are supported by the support rod. At this time, the two brake shoes expand outward and fit with the inner surface of the brake drum to form a friction to achieve braking purposes. Since the wheel is a rotating brake drum, the pressure acting on the brake shoes is asymmetrical, causing self-increasing and self-reducing force effects. The friction torque of the force-increasing brake shoe is 2 to 2.5 times that of the force-reducing brake shoe, which causes the wear degree of the two brake shoes to be different.

The function of the brake adjustment arm:

When the truck is driving, frequent braking will cause the brake shoes and brake drums to wear continuously, causing the gap between them to gradually increase; eventually, the push rod stroke of the brake chamber will become longer and the thrust force will decrease. Causes braking lag and reduced braking force. In order to ensure driving safety, it is necessary to ensure that there is an appropriate matching gap between the brake shoe and the brake drum. The adjusting arm is a device used to adjust and control the gap between the two.

How the brake adjustment arm works:

When designing the automatic adjustment arm, different brake clearance values will be preset according to different axle models. If the gap exceeds the limit during normal use, the brake adjustment arm will drive the internal one-way clutch mechanism to reduce the gap value by one gear when returning to the position after completing the braking action, so that the braking gap can be maintained at a level within the correct range.

Basic Info.

Product Advantages & Features

(1) It is made of national standard gray iron 250 and cast with carbon, silicon and manganese.
(2) Using lost foam processing technology.
(3) CNC center processing to ensure product accuracy.
(4) Dynamic balance test to ensure the concentricity of the brake drum.

Q1. Are you a factory or trading company?
We are a factory integrating research, development, production and sales.

Q2. What are the advantages of your products?
We support product customization to meet customer needs for special products. We can strictly control the products from raw materials to production, processing, product quality inspectåion, delivery, packaging, etc., and provide customers with high-end products and the most advantageous prices.

Q3. How about products price?
We are a factory, all products are direct sale at factory price. For the same price, we will provide the best quality; for the same quality, we have the most advantageous price.

Q4. What is your terms of packing?
We have branded packaging and neutral packaging, and we can also do what you want with authorization. This is flexible.

Q5. How to guarantee your after-sales service?
Strict inspection during production, Strictly check the products before shipment to ensure our packaging in good condition. Track and receive feedback from customer regularly. Our products warranty is 365 days.
Each product provides quality assurance service. If there is a problem with the product within the warranty period, the customer can negotiate with us in detail about the related claims, and we will do our best to satisfy the customer.

Q6. How can I accurately buy the products I need?
We need accurate product number, If you can't provide product number, you can send us your product picture, or tell us your truck model, engine name plate, and so on. we will
determine exactly what you need products.

Q7. Do you accept third party inspection?
Yes.we do

Q8. How about your delivery time?
Generally, it will take 3 to 10 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.

Q9. What are your brand agency conditions and advantages?
After we sign an agent in one city, we will not sign a second company to protect the agent's brand advantage and price advantage. And we will help the agent develop customers and solve all kinds of difficult and miscellaneous problems about products.

Q10. What is your terms of payment?
By TT or LC. We'll show you the photos of the products and packages before you pay the balance.