Cross roller bearing is more and more widely used in recent years, but how to choose the most suitable model and structure, most customers who use cross roller bearings are confused by the problem, today FRB BEARINGS will explain how to choose the suitable bearing!
First cross roller bearing model is very, very much, which can be roughly divided into the following series: INA SX series cross roller bearing , THK RB series cross roller bearings, INA XSU series crossed roller bearing , THK RA series cross roller bearing , THK RE seriescross roller bearing RE, THK RU series cross roller bearings, IKO CRB series cross roller bearing and so on.
How to select right type,you can refer to the following:
1.Size range: dimension is the most important parameters, the first thing to know how large size are needed , also to know what size of installation equipment,then to determine the size of the bearing.
2.Structure: because cross roller bearings under the same overall 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 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.Precision and clearance: the basic radial clearance group is applicable to general operating conditions, normal temperature and commonly used over-filling coordination;Under high temperature, high speed, low noise, low friction and other special conditions, large radial clearance is preferred for rolling bearings.Smaller radial clearance is suitable for precision spindle and machine tool spindle bearing.A small amount of working clearance can be maintained for roller bearings.In addition, there is no clearance for the detached bearing;In the end, the bearing capacity after work clearance, than the original clearance before the installation is small, because bearings will absorb a certain amount of load to rotate, and cross roller bearing and load produced by the elastic deformation.
5.Load capacity:When selecting cross roller bearing, 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
6.Consider price: this question is purely according to individual be fond of and to determine the economic strength, economic strength is strong, don't care about the difference, and like to use imported bearings, can use THK, IKO NSK products.If the budget dispute tension, recommended domestic cross roller bearing, such as FRB BEARINGS cross roller bearings.After years of technical research and development, continuous improvement and repeated practice, all technical indicators and precision have reached the level of foreign similar products.Company products are mainly suitable for high precision nc rotary table, dividing disk, direct drive motor, industrial robots, automation equipment, harmonic reducer, medical instruments, military radar, aviation, aerospace and measuring and test requirement of high precision in multiple areas.Welcome to consult!
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