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Matters needing attention in fine imported bearing equipment
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1), the roundness of the shaft and the seat hole and the straightness of the shoulder should be required according to the corresponding precision of the bearing.
2) It is necessary to accurately calculate the interference of the rotating ferrule cooperation; it is also necessary to accurately calculate the appropriate cooperation amount of the fixed ferrule. The rotation lap of the rotating ferrule should also be smaller within the possible range. The effect of thermal expansion at temperature; and the effect of centrifugal force at the highest rotational speed; does not result in the formation of tightly cooperating external activities or sliding. The fixed ferrule depends on the operating load size and bearing scale; chooses a very small gap cooperation or interference cooperation; too loose or Too tight and arrogant in insisting on the exact shape.
3), the bearing works under high speed conditions; and the operating temperature is high; special attention should be paid to the cooperation of the rotating ferrule; it is not too loose; to avoid the occurrence of partial pain oscillation; and the cooperation of the fixed ferrule can not present the gap; to avoid the ferrule Deformed under load and provokes oscillation.
4) The condition for adopting small interference cooperation on the fixed ring is that the surface has a high shape accuracy and a small roughness on both sides; otherwise, it is more difficult to form the equipment and it is more difficult to disassemble; in addition, it is also necessary to think about the thermal elongation of the main shaft. influences.
5), using the pair of double-joint angular contact ball bearing spindle; 80% load is lighter; if the cooperative interference is large, the internal axial preload will be significantly larger; the formation of helium affects. Use double column The main shaft of the short cylindrical roller bearing and the main shaft of the tapered roller bearing; the load is relatively large; therefore, the cooperative interference is relatively large.
Thinking from the perspective of rotation; imported bearings in the equipment is to pay attention to the above situation; but in the temperature situation is not stable; these are to think; the first aspect is how the imported bearings should cooperate with its equipment.
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