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The main function of the Wheel hub bearing is to bear the load and provide precise guidance for the rotation of the hub. It bears both the axial load and the radial load, and is a very important component. The traditional automobile wheel bearing is composed of two sets of tapered roller bearings or ball bearings. The installation, oiling, sealing and clearance adjustment of the bearings are all carried out on the automobile production line. This structure makes it difficult to assemble in an automobile production plant, with high cost and poor reliability, and the bearings need to be cleaned, oiled and adjusted when the automobile is maintained at the maintenance point. The wheel hub bearing unit is developed on the basis of standard angular contact ball bearing and tapered roller bearing. It integrates two sets of bearings, which has good assembly performance, can omit clearance adjustment, light weight, compact structure and load capacity. The advantages of large, sealed bearings can be pre-loaded with grease, omission of external hub seals and maintenance-free.
Please pay attention to the following matters in the use and installation of wheel hub bearings:1. In order to ensure maximum safety and reliability, it is recommended that you always check the wheel hub bearings regardless of the age of the car - pay attention to the early warning signs of bearing wear: including any friction noise when turning or the suspension combination wheel is turning Unusual deceleration. For rear-wheel drive vehicles, it is recommended that the front wheel hub bearings should be lubricated when the vehicle travels to 38,000 kilometers. When replacing the brake system, check the bearings and replace the oil seal.
2. If you hear the noise from the hub bearing, first of all, it is important to find the place where the noise occurs. There are many moving parts that may produce noise, and it may also be that some rotating parts are in contact with non-rotating parts. If it is confirmed that it is the noise in the bearing, the bearing may be damaged and needs to be replaced.
3. Because the working conditions of the front hub causing the failure of the bearings on both sides are similar, even if only one bearing is broken, it is recommended to replace it in pairs.
4. The hub bearing is more sensitive, and in any case, the correct method and suitable tools need to be used. In the process of storage, transportation and installation, the parts of the bearing cannot be damaged. Some bearings require greater pressure to be pressed in, so special tools are required. Be sure to refer to the car manufacturer's manual.
5. When installing the bearing, it should be in a clean and tidy environment. The entry of fine particles into the bearing will also shorten the service life of the bearing. It is very important to maintain a clean environment when replacing bearings. It is not allowed to hit the bearing with a hammer, and be careful not to drop the bearing on the ground (or similar mishandling). The condition of the shaft and bearing housing should also be checked before installation, as even a small amount of wear can lead to poor fit, which can lead to early failure of the bearing.
6. For the hub bearing unit, do not attempt to disassemble the hub bearing or adjust the sealing ring of the hub unit, otherwise the sealing ring will be damaged and water or dust will enter. Even the raceways of the seal ring and inner ring are damaged, resulting in permanent failure of the bearing.
7. There is a magnetic thrust ring in the sealing ring equipped with the bearing of the ABS device. This thrust ring cannot be collided with, impacted or collided with other magnetic fields. Take them out of the box before installation and keep them away from magnetic fields, such as motors or power tools in use. When installing these bearings, change the operation of the bearings by observing the ABS alarm needle on the instrument panel through a road test.
8. For the hub bearing equipped with ABS magnetic thrust ring, in order to determine which side the thrust ring is installed on, a light and small object can be used to approach the edge of the bearing, and the magnetic force generated by the bearing will attract it. When installing, point the side with the magnetic thrust ring inward, facing the sensitive element of the ABS. NOTE: Improper installation may result in the malfunction of the brake system.
9. Many bearings are sealed, and these bearings do not need to be greased throughout their life. Other unsealed bearings such as double row tapered roller bearings must be lubricated with grease during installation. Due to the different sizes of the inner cavity of the bearing, it is difficult to determine how much grease to add. The most important thing is to ensure that there is grease in the bearing. If there is too much grease, when the bearing rotates, the excess grease will seep out. General experience: During installation, the total amount of grease should account for 50% of the bearing clearance.
Auto Wheel Bearing Atlas
10. When installing the lock nut, the torque varies greatly due to the different bearing types and bearing seats.
SHAANXI U'LUCK INDUSTRIES CO., LTD is located in XI'AN city of China. We specialized in exporting car sunshade and auto parts to USA, Germany, UK and many countries for almost 12 years. We supply the best price and good quality products to our customers, especially our service. Every customer said they are very happy to cooperate with us. If you have any needs, please contact us freely!Our service1, We supply standard model products2, We can produce according to customer requirements.3, High performance products with short delivery time.4, Flexible packaging ways for your choice.5, Designed, engineered and manufactured to OE quality standards6, Free samples FAQ1. How to deal with defects? Before your shipment ,we will inspect carefully and make sure the product is perfect. And we will provide two year warranty so please kindly to purchase.2. Can you offer OEM &ODM? Our company accept OEM&ODM, if your need it, please inform us of your specific requirements.3. What is the MOQ of your product? MOQ=500PCS Small quantity negotiable4. What's your mode of transportation/shipping? By DHL, FedEx, UPS, TNT ,EMS EXPRESS ,By sea, By air etc. Of course, you can also specify the mode of transportation, then tell us your specific requirements.5. Payment Terms T/T, L/C, Western Union, Paypal,Trade Assurance. If you need to pay by other ways, please negotiate with us.6. How long is your delivery time? 7-30days after we receive your prepayment or L/C7. I don't trust your products quality, can you provide samples? Yes, we could offer the sample for free charge but do not pay the cost of freight. After your first order,the sample freight fee will refund to you.We will offer what you want, solve the problems what you have, just don't hesitate to contact us! 
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