We select micro bearing when a number of factors we have to consider, because these factors may directly influence the quality of miniature bearings.

1. micro bearing its own length compensation

Supporting a shaft and bearings are fixed bearings and bearing combination swimming structure. Free bearing compensating shaft length error and thermal expansion.

2. miniature bearings axial load

To carry axial load bearing for thrust bearing, nominal contact A0>450 in the corner of it. Thrust angular contact ball bearings and thrust bearings according to the different structure can bear one or axial load in both directions. When the bear special optimization of high thrust force cylindrical roller bearing and thrust roller bearings.

3. the miniature bearing sliding length compensation

Can not be separated bearings miniature bearings can also be used for swimming. Two rings of these bearings in a tie, no axial fixation. Therefore, the bearing of one ring on its seating can be active.

4. separation of miniature bearings (precision)

This is a ring of bearings can be mounted separately, when the two races were a tight fit, the advantage is very prominent.

Separable bearings consist of four point contact ball bearings, double half inner ring of double row angular contact ball bearings, cylindrical roller bearings, tapered roller bearings, thrust ball bearings, cylindrical roller thrust bearing and thrust roller bearings.

5. precision of miniature bearings

In most cases General dimensional and running accuracy of rolling bearings will suffice. When more is required, bearing requires a higher degree of accuracy.

6. miniature bearing radial load

Main radial load bearing for radial bearings. The bearings the nominal contact angle A0<=45 0. Rain the same roller bearings more than ball bearings can accommodate radial loads.

NU and n type cylindrical roller bearings can only accommodate radial loads, other types of radial bearings can accommodate radial loads, can carry axial load.

7. compensation of miniature bearing without neutral

Processing journal to appear neutral in mating surfaces when surface or housing, particularly in conjunction with surface processing is not completed in a single card. Using the bearing will not. Due to work load shaft bend, causing the outer ring when also appear wrong.

8. micro bearing speed

Special low friction of single row bearings, so you can reach maximum speed. These bearings can only accommodate radial loads of deep groove ball bearings and angular contact ball bearings can withstand the combined load.

9. the miniature bearing taper

Bearings with conical bore can be mounted directly on tapered shaft. When you install these bearings can be adjusted for a given radial internal clearance.

10. micro-friction

Apart from the heating and cooling, internal friction on the bearing operating temperature also play a large role in determining. Low-friction bearing: radial load for deep groove ball bearings, miniature single row angular contact ball bearings and cylindrical roller bearings with a cage. Bearings with contact seals, full complement cylindrical roller bearing and thrust roller bearings produces larger friction.

10 factors above were selected micro bearing an important factor, so special attention must be taken in selecting.