Interpretation of the considerations for the use of variable speed bearings
2020-11-25 12:16:12
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Interpretation of the considerations for the use of variable speed bearings
Source: China Bearing Network Time: 2017-12-12
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1. Refer to the shape and connection scale of variable speed drive bearings.
2, variable speed drive bearings can be horizontally settled; can also be vertical or skewed to settle. Can be forward and reverse rotation. Positive and negative input and output power (ie deceleration or speed increase).
3. No matter what kind of device method is used for variable speed transmission bearing; there is a need for scale cooperation with its coupling parts.
Referral selection:
The cooperation between the inner ring hole d and the shaft is as H7/h6,
The cooperation between the pin hole on the middle ring and the drive is based on H7/r6.
The cooperation between the outer ring D and the housing is based on H8/h7.
The cooperation between the transmission and the hole on the output shaft is coordinated by the gap; the amount of the gap is 0. 2~0. 5mm.
4. Axial positioning of variable speed transmission bearings: one of the three turns of the ring is axially positioned; the other two axes do not need to be axially positioned.
5, the direction of the transformation, the outer ring and the inner ring are flat key positioning. The middle circle is using the drive positioning
6. The variable speed drive bearing can accept a small external force in the radial direction; as shown in Figure 5; however, it is not suitable to accept a large working load.
7. Transmission ratio; both are transmission ratios according to the first device method. If other device methods are used; the transmission ratio should be calculated according to Table 1.
8. At the extra speed (1500 rpm); according to the transmission to the required power (Kw), select the variable speed bearing type according to Table 2.
9. When based on the working torque; select the type according to Table 3.
10. The choice of the type of reducer is the same as the type of variable speed drive bearing.
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