SKF bearings with locating rings are designed for applications where the bearing is to be located by other means, for example by a housing or shaft. SKF supply linear bearings with locating rings in standard and custom designs, including:
Linear ball bearings – low-friction, high-speed single row deep groove ball bearings, double row angular contact ball bearings and double row angular contact ball thrust bearings.
Tapered roller bearing units – single row tapered roller units with an integrated rollerset, double row tapered roller units with an integrated rollerset and double row spherical roller thrust units.
Cylindrical roller bearing units – single row cylindrical roller thrust units and double row cylindrical roller thrust units.
The bearings with a locating ring on the outer ring are normally used in pairs to support both directions of a shaft.
The bearings with a locating ring on the outer ring are normally used in pairs to support both directions of a shaft. The double row angular contact ball bearings can be divided into two categories according to the direction of rotation, i.e., single direction and double direction. The single direction double row angular contact ball bearing consists of one inner ring and two outer rings installed on both sides of the shaft. The double direction double row angular contact ball bearings consist of two inner rings and two outer rings installed on each side of the shaft.
The bearings with locating rings on the outer ring are used for supporting both directions of a shaft. They have an inner ring, outer ring and cage assembly. The inner ring has a bearing seat, which is installed on one face of the shaft; the outer ring has an anti-friction lining bonded to it so that it can slide on its seat when contacting with its housing; and the cage is made up of several pieces that hold all three parts together and protect them from damage during mounting operations or when removed from their housing for maintenance purposes.
These bearings are usually applied with an initial preload to decrease the play between the bearing rings and thus minimize creep and vibration , as well as improve running accuracy.
The preload can be introduced by tightening the outer ring against a fixed inner ring (spherical roller bearings), or by compressing the outer ring against the rolling element cage (annular roller bearings). The preload force is then transferred through the cage to the balls and rollers, which carry it to one side of the raceway.
Preload is also applied when using cylindrical roller bearings. In this case, however, it is done by applying an axial load on the inner ring that then acts on all rollers in opposite directions so that they align themselves along their axes.
The bearings can accommodate both axial displacements and tilting moments, but cannot accommodate large radial forces.
The bearings can accommodate both axial displacements and tilting moments, but cannot accommodate large radial force. This is because the bearings are designed to carry only a small amount of radial loading (typically less than 1% of their rated load capacity). If a bearing is subjected to any significant radial load, it will deform excessively and lose its ability to support axial loads or resist torsional loads.
The bearings usually have enough rigidity that they can resist bending under axial loads, but they may not be able to resist bending under torsion. In some cases this can cause problems when there is no support for one end of the shaft or when there are high torsional forces on one side of the bearing (such as in a spinning blade).
YAT series from SKF.
The YAT series is a modular, thermally efficient line of gear units with a wide range of power ratings and configurations. The design features a compact housing and an integrated fluid coupling, which offers significant weight savings over traditional designs. It also provides for easy integration with motor drives, allowing for reduced installation space and cost savings.
YAT series gear units are available in NEMA size 4 and IP56-rated enclosures with either cast iron or aluminum housings. They feature a wide variety of mounting options, including flange mounting and DIN rail mounting for standard applications as well as vertical and horizontal shafting for specialized applications.
SKF YAT series from SKF is a family of high-performance, high-precision, ball bearings for use in rolling mills. The bearings are designed for applications where conventional ball bearings cannot be used due to their size or weight.
The YAT series is characterised by its excellent load capacity and rigidity. It can handle heavy axial loads and radial loads in both directions simultaneously. The bearings are available in an ISO taper or non-taper configuration, as well as with snap rings and flange seals, making them suitable for many applications.
The YAT series comprises three types: YAT20, YAT25 and YAT40.
The bearings with a locating ring on the outer ring are normally used in pairs to support both directions of a shaft.
They can also be used as single bearings, but they are not self-locating and must be located by another means.The bearings with locating rings on both sides of the outer ring are designed to support radial loads only. The bearings should be located by dowel pins or keyways in the housing bore or by set screws located in the housing bore or on a flange of the shaft.
If there is no room for a locating ring or if misalignment cannot be tolerated, it may be necessary to use tapered roller bearings.
Roller Bearings consist of two parts: an inner ring and an outer ring, separated by rollers which roll between the rings (figures 1–4). The inner ring is made with a smooth concave surface that supports the rollers, while the outer ring has ribs on its circumference that support it against lateral thrusts. Roller bearings have high precision and load carrying capacity but have relatively high friction when compared to ball and needle roller bearings. Roller bearing units are available as standard open type units (X-bearings) or sealed units (Z-bearings).
The SKF locating bearing is a powerful tool for improving the accuracy of machined components. As its name suggests, the SKF locating bearing is installed so that it locates workpiece parts in relation to machine axis, simplifying setup and cutting, which can greatly reduce production time.