US 5,261,750 AGranted

Bearing assembly

AssigneeDeere & Company

InventorsUli Eckhardt, Bruno Schmitt

Life of this patent

Estimating the term…

Loading patent…

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.

Claims11

Dependent claims

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.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/880,627Filed 8 May 1992
Priority: DE 411521710 May 1991
Granted: 16 Nov 1993
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

F16H 57/0421
Guidance of lubricant: on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
F16C 19/545
Systems consisting of a plurality of bearings with rolling friction: systems comprising at least one rolling bearing for radial load in…
F16C 23/06
Bearings for exclusively rotary movement adjustable for aligning or positioning: ball or roller bearings
F16H 57/021
Gearboxes; Mounting gearing therein: shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings