Bearing assembly
First Claim
1. A bearing assembly for supporting in a gearbox housing (48) a gearbox shaft (10) which is subject to bending forces and able to absorb axial forces, the bearing assembly having:
- (i) at least one radial cylindrical roller bearing (18), whose inner race (16) is supported radially and axially on the shaft (10) and whose outer race (58) is supported radially in the gearbox housing (48);
(ii) a bearing housing (40) supported by the gearbox housing (48);
(iii) attachment means (50) for attaching the bearing housing (40) to the gearbox housing (48);
(iv) two thrust bearings arranged to either side of the bearing housing (40), where the thrust bearing facing the radial cylindrical roller bearing (18) is supported in the axial direction by the inner race (16) of the radial cylindrical roller bearing (18); and
(v) fixation means for securing the radial cylindrical roller bearing (18) and the thrust bearings against axial movement to the gearbox shaft (10);
characterized in that(a) the thrust bearings are axial cylindrical roller thrust bearings (22,
24); and
(b) the bearing housing (40) is flexible so that at least the portion of the bearing housing(40) that supports the cylindrical roller thrust bearings (22,
24) conforms to the inclination of the gearbox shaft (10) during deflection of the shaft.
1 Assignment
0 Petitions
Accused Products
Abstract
A bearing assembly for a gearbox shaft which is subject to bending forces and capable of absorbing axial forces. The bearing assembly has at least one radial cylindrical roller bearing and two thrust bearings. The inner race of the radial roller bearing is supported radially as well as in one axial direction by the shaft. The thrust bearings are arranged to either side of and supported by a bearing housing that can be attached to the gearbox housing. The thrust bearing closest to the radial cylindrical roller bearing is supported in one axial direction by the inner race of the radial roller bearing. The radial roller bearing and the thrust bearings then are secured against axial movement on the shaft, e.g., by a retaining ring. The bearing housing is designed so that the bearing housing will conform to any inclination of the gearbox shaft due to shaft deflection. For this purpose, the bearing housing may have regions of varying stiffness in the circumferential direction.
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Citations
11 Claims
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1. A bearing assembly for supporting in a gearbox housing (48) a gearbox shaft (10) which is subject to bending forces and able to absorb axial forces, the bearing assembly having:
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(i) at least one radial cylindrical roller bearing (18), whose inner race (16) is supported radially and axially on the shaft (10) and whose outer race (58) is supported radially in the gearbox housing (48); (ii) a bearing housing (40) supported by the gearbox housing (48); (iii) attachment means (50) for attaching the bearing housing (40) to the gearbox housing (48); (iv) two thrust bearings arranged to either side of the bearing housing (40), where the thrust bearing facing the radial cylindrical roller bearing (18) is supported in the axial direction by the inner race (16) of the radial cylindrical roller bearing (18); and (v) fixation means for securing the radial cylindrical roller bearing (18) and the thrust bearings against axial movement to the gearbox shaft (10); characterized in that (a) the thrust bearings are axial cylindrical roller thrust bearings (22,
24); and(b) the bearing housing (40) is flexible so that at least the portion of the bearing housing(40) that supports the cylindrical roller thrust bearings (22,
24) conforms to the inclination of the gearbox shaft (10) during deflection of the shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification