Level of cooperation and public service

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Level of cooperation and public service

Source: Bearing network time: 2014-08-08

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1 The selection of the public service level is related to the bearing accuracy of the shaft or bearing housing hole. The shaft with the P0 precision bearing is usually the IT6; the bearing housing hole is usually IT7. Accuracy and work stability have high demand occasions (such as electric motors, etc.); the shaft should be selected as IT5; the bearing housing hole is IT6.
2 The selected equivalent radial load P of the public service belt is divided into several conditions such as “light”, “normal” and “heavy” load; its relationship with the additional dynamic load C of the bearing is:
Light load P≤0. 06C Normal load 0. 06C <P≤ 0. 12C Heavy load 0.12C<P
1) The main service belt of the shaft of the axial bearing and the angular contact bearing refers to the corresponding public service belt table. For most occasions; the shaft rotates and the radial load direction is unchanged; that is, the bearing inner ring is related to Where the load direction rotates; usually the transition or interference cooperation should be selected. Stop the shaft and the radial load direction is unchanged; that is, the bearing inner ring is stopped when the load direction is stopped; the transition or small gap cooperation can be selected (too large gap) Is not allowed).
2) Shell hole public service belt device Concentric bearing and angular contact bearing housing hole refer to the corresponding public service belt table. When selecting, focus on the outer ring about the load direction swing or rotation; should prevent the gap cooperation. The size of the equivalent radial load also affects Cooperation in the outer circle.
3) The bearing housing layout method selects the bearing housing of the rolling bearing unless there is a unique demand; usually the overall layout is used; the split bearing housing is only difficult to install; or when the convenient position of the installation becomes the primary thinking point However, it cannot be applied to tight cooperation or finer cooperation; for example, K7 and tighter cooperation than K7; and, for example, the seat of the public service class is IT6 or finer;

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