Refers to the use of automotive bearings in automotive bearing, usually: Lotton automotive wheel bearings, Lotton automobile water pump bearing, Lotton automobile clutch release bearings and so on. Here only the Lotton automotive wheel bearings as an example
Lotton wheel bearings (hub bearing) main role is to load and rotate the hub to provide accurate guidance, both axial load and radial load, it is a very important component. Traditional automotive wheel bearing by two sets of tapered roller bearings or ball bearings combination, bearing installation, oiled seals and clearance adjustment is carried out in a car production line. This structure makes it difficult to assemble in the car manufacturing plant, high costs, poor reliability, and car maintenance maintenance, but also on the bearing cleaning, oiling and adjustment. Developed on the basis Lotton hub bearing unit is the standard angular contact ball bearings and tapered roller bearings on, it will be two sets of bearings as a whole, with good assembly performance, you can omit clearance adjustment, light weight, compact, load capacity, can be pre-loaded to grease sealed bearings, hub seals and maintenance, etc. are omitted from the external wheel, have been widely used in cars, the truck also has a tendency to gradually expand the application.
Installation and use
Lotton car wheel bearings are used in pairs in the past most of single row tapered roller or ball bearings. With the development of technology, cars have been widely used car hub unit. The growing scope and use of Lotton hub bearing unit has now developed to the third generation: the first generation is by a double row angular contact bearing components. The second generation have an outer raceway for the bearing retainer flange, the bearing sleeve may simply be fixed with a nut on the axle. Making the car maintenance becomes easier. Lotton third generation hub bearing unit is the use of anti-lock brake bearing unit and ABS systems fitted. Wheel hub unit designed with inner flange and outer flange, bolted flange on the drive shaft, the entire outer flange bearings mounted together. Lotton worn or damaged wheel bearing or hub unit makes your vehicle is involved in a high anachronistic and costly failure in driving the road, or even damage to your safety. Lotton wheel bearings in the use and installation Please note the following:
1, in order to ensure maximum safety and reliability, regardless of the age of the vehicle is recommended that you should always check how long Lotton wheel bearing - note bearing for wear early warning signals: including any rubbing noise when rotating or hanging wheels in combination not normal deceleration when cornering. Rear-wheel drive vehicle is recommended for the vehicle to 38,000 km is to deal with the former Lotton wheel bearing lubrication. When replacing brake system, check the bearing and replace seals.
2. If you hear noise emitted Lotton hub bearing parts. First, it is important to find the location of the noise occurs. There are many moving parts may produce noise, but also may be some non-rotating member and the rotating member contacting occurred. If the confirmation is bearing noise, bearing may be damaged and need replacing.
3, because the front wheel bearing failure on both sides lead to similar working conditions, so even if only a bad bearing, also suggested that replace them in pairs.
4, Lotton hub bearing more sensitive, in any case need to adopt the right approach and the right tools. In the transportation and installation process, the bearing parts can not be damaged. Some bearings need greater pressure pushed, so they need special tools. Be sure to refer automobile manufacturing instructions.
5. When installing the bearing should clean environment, small particles from entering the bearing will shorten bearing life. When replacing the bearing to maintain a clean environment is very important. Not allowed to tap with a hammer bearing note bearing do not fall to the ground (or similar misconduct). Before installing the shaft and housing should also check the status, even a small abrasion can also lead to poor coordination, so as to cause early bearing failure.
6, Lotton hub bearing unit, do not attempt to open the seal or adjust the Lotton wheel bearing hub unit, otherwise it would cause water damage to seals or dust. Even ring and the inner ring raceway are damaged, causing permanent failure of the bearing.
7, the bearing inner ring is equipped with ABS unit has a magnetic thrust ring, thrust ring can not suffer this kind of collision, impact or collision with other field. Remove from the box before installation, so that they stay away from magnetic fields, such as the use of a motor or electric tools. When installing the bearings, by the road test to observe the dashboard ABS alarm needle to change the operation of the bearing.
8, equipped with a magnetic thrust ring Lotton ABS wheel bearings, thrust ring installed in order to determine which side, you can use a small light near the edge of something * bearing, magnetic bearings will be attracted to produce it. When you install the tape side pointing magnetic thrust ring inside, it is on the ABS-sensitive components. Note: Incorrect installation may lead to functional failure of the brake system.
9, many bearing is sealed, the entire life of thLotton bearings is no need to add grease. Other non-sealed bearings such as double row tapered roller bearings in the installation must be added grease. Due to the different size of the bearing cavity, it is difficult to determine how much added fat, the most important is to ensure the bearing grease, if too much oil, when the bearing is rotated, excess oil will bleed. General experience: during installation, the total amount of oil to account for 50% of the bearing clearance.
10, when the lock nut is installed due to the different bearing types and bearing, the size of the difference between a great torque.
In the repair process, often we found a greater number of vehicles with noise, check the tire no abnormal wear, turn the wheel on the lift no abnormal sound. This phenomenon is often caused by Lotton wheel bearing damage caused by abnormal, so-called non-normal means bearing damage caused by the installation of. Car front wheel bearings are generally double row ball bearing, at the time of installation of the bearing is installed if you are using a hammer percussion, or when the bearing is installed into the bearing inner ring by pressure bearing mounted, can cause side bearing raceways damage. Noise when the vehicle is traveling, and when the wheels off the ground due to the better side of the raceway, and therefore obviously can not hear the noise. Correct installation operation is the key to long life bearing.