Étiquette : Pressed Bearings


The universal joint manufacturer bearing is installed between the front axle half shaft and the wheel, which is responsible for driving and steering. On a front-engine rear-wheel drive vehicle, the universal joint transmission is installed between the transmission output shaft and the input shaft of the transaxle final drive. The combination of universal joint and drive shaft is called universal joint transmission.

Working principle of universal joint bearings

When the active fork is in the vertical position of the linear bearing, and the cross axis plane is perpendicular to the active axis. At this time, the linear velocities of the connecting point of the driving fork and the cross shaft and the connecting point of the driven fork and the cross shaft on the axis plane of the cross special bearing are equal.

The speed projection of the driven fork to the cross-axis plane. Because the condition 1 is difficult to meet when the non-independently suspended thrust roller bearing frame is used, the relative position of the transmission and the main reducer is constantly changing, and the unequal speed can only be achieved as much as possible small.

The unequal velocity of the cross shaft universal joint. It means that the angular velocity of the driven shaft is uneven in a circle, and the driven shaft is fast and slow. If the driving shaft rotates at the type constant angular speed, that is, a single cross shaft universal joint has The unequal speed of the transmission at the angle.

The angle between the two shaft angular contact ball bearings of the first universal joint is equal to the angle between the two shafts of the second universal joint. The double cross-shaft universal joint realizes the conditions of constant speed transmission between the output shaft of the transmission between the two shafts and the input shaft of the drive axle. The driving fork is in the horizontal position and the plane of the cross turntable bearing axis is perpendicular to the driven shaft. The driving fork direction The velocity projection of the cross axis plane. The bearing driven fork of the first universal joint is in the same plane as the driving fork of the second universal joint. The angular speed of the driving and driven shafts is related to the Pressed Bearings system. The greater the angle of the two shafts, the greater the speed, and the worse the unequal speed of the drive shaft.



According to the different use environments of various bearings, the required sealability can also be different.

The inner ring of the Slotted Bearings is paired with the outer ring with a groove. After the sealing ring is assembled, the inner ring is not in full contact with the sealing ring, but it can resist the entry of dust and dirt, but it cannot completely resist the entry of foreign objects. In the slotted inner ring structure, the seal ring and inner ring are closely attached to each other after assembly, which can block more foreign objects. So as to ensure the service life and accuracy of the bearing.

However, strictly speaking, a completely sealed bearing does not exist, and there is relative rotation between the inner and outer rings of the bearing, which means that there must be a gap in the bearing. In terms of generalized sealing, bearings with ultra-high sealing capacity exist, and shaft seals or good sealing covers can be used to achieve the purpose.

The most commonly used sealing method is RSH contact sealing. In addition to the performance of the RSL low-friction seal mentioned, SKF contact seals also have the following characteristics. First, the second sealing lip can withstand high-pressure cleaning and prevent water from entering. When pressure is applied to the outside of the bearing, the contact pressure between this sealing lip and the opposite side of the seal increases, but the design of the sealing lip prevents the seal from pressing into the bearing. Second, for seals with bearings with an outside diameter greater than 25mm, there are radial slots at the conical junction. These can provide a contact area between the sealing lip and the opposing surface for proper lubrication. This can also extend Pressed Bearings life.