ntn bearings work requirements and dust seals with hook structure

1, ntn bearing requirements for the work
One of imports bearing load

Bearing loads suffered import size, direction and nature of the choice based primarily on imported bearing type.
The size selection based on load bearing type of imports, because imports of roller bearings between the main component is line contact, should be used to bear a larger load, the deformation after the load is also smaller. The ball bearings are mainly imported point contact, should bear a lighter or medium for the load, so the load is small, imported ball bearings should be preferred.

Select Import under the direction of load bearing type, for the pure axial load, generally used in the thrust bearing imports. Smaller pure axial load optional thrust ball bearings imported; large axial load can be used pure thrust roller bearings imported. For pure radial loads, generally used in the imports of deep groove ball bearings, cylindrical roller bearings or needle import import bearings. When imported bearings to support radial load R at the same time, there is little axial load A may make use of deep groove ball bearings or the contact angle of less import of angular contact ball bearings or tapered roller import import bearings; when the shaft to the large load
Optional contact angle larger angular contact ball bearings or tapered roller import import bearings, or use imported bearings and thrust to the center bearing together the structure of imports, respectively, to bear radial load and axial load.

2 speed imported bearing
In general speed, the speed level on what kind of choice does not affect only the speed is higher, will have more significant impact. Import samples included various types of bearings, bearing various sizes limit speed nlim import value. The loading speed is not too large (P ≤ 0.1C, C as the basic dynamic load rating), the normal cooling conditions, and tolerance to 0 to allow imports of bearing the maximum speed when. However, the speed limit when the temperature is mainly affected by the restrictions of work, therefore, can not believe that the sample is an absolute speed limit is not exceeded.
If the imported bearings of the working speed exceeds the limit speed, it can take the following measures proposed in section 5.

Speed from the work requirements on imported bearings of view, determine the following:

1) imported, imported bearings and roller bearings compared to a higher speed limit, it should be preferred in high-speed ball bearings imported.

2) in diameter under the same conditions, the smaller the diameter, the ball the more light is small, running ball rolling trail added to the outer ring of the centrifugal inertial force also smaller and, therefore, more suitable for higher speed to work. On high speed, it should use ultra-light, special light and light series of imported bearings. Heavy and extra heavy series of imported bearings, only for low-speed heavy occasions. Such as with a light series bearings and bearing capacity of the import fail, they can consider wide range of imported bearings, or the two light series bearings and fitted with the use of imports.

3) Materials and Structures cage speed bearing a great impact on imports. Solid Cage cage allows more than stamping higher rpm.
4) thrust bearing authority imports were very low speed. When the high speed of work, if the axial load is not very large, can be used angular contact ball bearing wheel bearing pure axial force.
5) If the working speed of slightly more than the limit specified in the sample speed, can improve the tolerance level of imported bearings, or due to increase imports of bearing radial clearance, use lubrication or oil mist lubrication circulation, strengthen the circulation of cooling oil measures to improve the performance of the import of high-speed bearings. If the work is more speed than the limit speed, should be used specially imported high-speed rolling bearings.
Second, dust seals with hook structure
Import bearing seal performance and seal strength, because the hook for the skeleton structure of the effective increase in crimping ring flexibility, the maximum compensation for bad teeth scattered population size effects, not only by the elastic sealing elastomers, as well as bearing seal ring structure generated by crimping the role of flexibility and strength and improve the passing rate cap installed, and can be machine pressure, can effectively compress.
The company's main products imported bearings, with Sweden, SKF, FAG, Germany, Japan NSK, NTN, THK Korea SAMICK, Taiwan ABBA. Imported high-precision linear guide, imported linear bearing, linear shaft, import joint bearings, small bearings, rolling mill bearings, spherical roller bearings, tapered roller bearings, angular contact ball bearings and other products.