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Bearings for marine reduction gears
Source: China Bearing Network Time: 2014-05-14
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The coupling shaft coupling shaft is supported by the spherical roller bearing (1, locating bearing) at the driving end; the other end is supported by a cylindrical roller bearing (2, floating bearing). The shaft only transmits torque. The bearing only has to bear the slight weight. And the small gear force from the power output system. The bearing scale is determined by the depiction, compared to the actual needs; larger bearings are used more to bear the load. Therefore; do not need to calculate the life.
The input shaft is supported by the two spherical roller bearings on the input shaft as the radial load generated by the gear meshing. The thrust load in the main direction of rotation during the traveling operation is solely supported by the thrust spherical roller bearing. The left bearing It also bears the reverse axial load. The thrust spherical roller bearing should use small clearance or pretension with tension spring to adjust the thrust spherical roller bearing with small clearance; and preload with spring. When the load changes but insists on rolling without slipping; the preload ensures that the thrust bearing roller will not leave the raceway. The radial direction of the thrust spherical roller bearing is not supported in the bearing housing; thus the bearing does not transmit radial load.
The output shaft is on the output shaft; it must be separated from the radial and axial loads. The radial load is supported by two spherical roller bearings. The thrust spherical roller bearing at the output bearing orientation bearing thrust is used as the helical thrust during the traveling process. The difference between the axial load and the axial tooth load. The smaller axial load during the retracting work is carried by the smaller thrust spherical roller bearing. The two thrust bearings are also adjusted with each other with a very small axial clearance; Pre-tightening; and not supported radially in the bearing housing.
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