FRB Bearings resolve how to select crossed roller bearings?

Cross roller bearing is more and more widely used in recent years, but how to choose the most suitable model and structure, is confused by the vast majority of using cross roller bearing customer problems, how to correct selection, FRB Bearings think can reference from the following several aspects.

1. Size range
Dimension is the most important parameters, the first thing to know that they need to use what size bearing, also can say that you need to install the bearing installation what size, then to determine the size of the bearing.


2. Structural form
Because cross roller bearings under the same dimensions, there are many kinds of structure, there are outer split type (RB/RA), also has a division of inner ring type (RE), there are also (RU/CRBH) of overall structure, the key depends on the bearing to drive the rotating parts of the need to install the bearing inner ring and outer ring.If the outer ring rotation is required, the inner ring segment must be adopted.In the same way, the inner ring rotation precision is required, and the outer ring division type must be adopted. Both the inner and outer rings require high rotation precision, which is suitable for the overall structure of the inner and outer rings.

3. Installation method
Cross roller bearings from installation, there are two major categories, one is internal and external ring is installed with a hole, like slewing bearing, its installation is simple, direct by connecting bolt connection on the device;The other is that the inner and outer rings have no mounting holes, mainly through the bearing pedestal and the compression flange and shaft and bearing inner diameter overfill fit.

4. Carrying capacity
When selecting cross roller bearings, it is necessary to know whether it can bear the load imposed by the equipment, and determine whether it is suitable according to the load capacity requirements of the equipment design and the rated load of the corresponding bearing.

5. Accuracy and clearance
The precision and clearance of cross - roller bearings are the core of cross - roller bearings.The positive and negative motion of bearing can affect the rigidity, noise, life and speed of cross roller.

When the working clearance is negative, the fatigue life of the bearing is the longest, but the fatigue clearance decreases with the increase of the negative clearance.But it can greatly increase the rigidity of bearing and reduce the noise of bearing.When the working clearance is positive, the bearing speed will increase.But at the same time bearing will come bearing noise too large, rigidity and other deficiency.