What are the characteristics of dac bearing?

DAC bearing (DoubleAngularContact)-------Double-row angular contact bearing automotive wheel bearing, with a single outer ring and two separable inner ring composed of double row angular contact bearings. According to the type of rolling elements, it is divided into angular contact ball bearings and angular contact roller bearings. DAC bearings have been designed with axial play in mind, so no clearance adjustment is required for installation.
The main function of the miniature car bearing hub bearing is to provide weight and provide precise guidance for the rotation of the hub. It is both an axial load and a radial load and is a very important component.

The installation, oiling, sealing and adjustment of the dac bearing are carried out on the car production line. This structure makes it difficult to assemble in a car production plant, high in cost, and poor in reliability, and the car needs to be cleaned, oiled, and adjusted at the maintenance point.

The dac bearing unit is developed on the basis of standard angular contact ball bearings. It combines two sets of bearings as one, has good assembly performance, can eliminate play adjustment, is light in weight, compact in structure, large in load capacity, and is a sealed bearing. It can be pre-loaded with grease, omitting external hub seals and maintenance-free. It has been widely used in cars, and it has also gradually expanded its application in trucks.

During the maintenance process, it is often found that some vehicles have large running noise, and the tires are checked for no abnormal wear, and there is no abnormal noise in turning the wheels on the lift. This phenomenon is often caused by abnormal damage of the hub dac bearing. The so-called abnormality refers to the damage of the dac bearing caused by the installation.

The front wheel dac bearing of the car is generally a double row ball bearing. If the hammer is used for the installation of the dac bearing, or when the dac bearing is installed into the bearing housing, the inner ring of the bearing is installed, which will cause the side dac. Damage to the bearing raceway. Noise is generated when the vehicle is running, and no significant noise is heard when the wheel is off the ground due to the better side of the raceway. Proper installation is the key to the long life of the dac bearing.

ZYSL company specializes in dac bearing for many years. All raw materials and accessories have been carefully selected to ensure a good user experience.

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