Bearing Pairs 2018-09-05 16:43:01

In an engineered bearing configuration, if the single-row tapered roller bearing (hereafter referred to as a bearing) has insufficient load carrying capacity, or the shaft needs to be axially positioned in both directions, and the work of a given preload or clearance is required In this case, paired bearings can be used to meet the requirements.
1 pairing form
The assembled form of the matched bearing is divided into face-to-face configuration and back-to-back configuration (pictured: face-to-face configuration is a spacer between the outer rings of the two bearings, the process is relatively simple; in the back-to-back configuration, the two bearings are not only between the outer rings There is a spacer ring and a spacer ring between the inner rings. The process of production and processing is more complicated and costly than the face-to-face configuration.

2 Advantages of paired bearings
Direct selection of matched bearings that have been adjusted at the factory provides an economical solution for bearing applications, including the following advantages:
1) No need to adjust the spacer to simplify the installation process and avoid installation errors that may occur during actual operation;
2) The axial clearance has been determined when the bearing is delivered, and it has accurate axial positioning function;
The radial and axial load carrying capacity of the bearing is greatly improved.
4) The bearing is easy to repair. The lubricant is injected through the small hole in the middle of the spacer ring to make the bearing fully lubricated and improve the service life of the bearing.
3 pairing method
In the actual design, if the matching bearing of the bearing factory is selected, it will be very simple, but sometimes due to design requirements, or due to time and cost considerations, we can not choose the appropriate matching bearing model. However, users can choose two pairs of single-row bearing pairs of the right size according to their needs, which saves time and saves costs. Back-to-back matched bearings are much more complicated than face-to-face matched bearings, so the average user is a self-matching face-to-face configuration with few back-to-back configurations.
Many times, the designer believes that the width of the face-to-face pairing spacer ring is C=2 (T-C1), but this is not true, because the bearing fit and the load on the bearing will affect the axial clearance of the bearing. In order to achieve the best bearing application, the spacer must take into account the problem of axial clearance reduction.