Method of preloading tapered roller bearings
AssigneeGeneral Motors Corporation
InventorBradford E. Vorbeck
Life of this patent
Estimating the term…
Abstract
A method is provided for achieving a desired preload on tapered roller bearings which rotatably support a gear between first and second transmission housing members in the assembly of a transmission. The bottom of each pocket which supports a tapered roller bearing is measured with respect to a mating face of the transmission case half. Shims are selected based upon these measurements so that each shim forms a reaction surface upon which the tapered roller bearings rest so that the appropriate preload is established with the case halves are bolted together.
Claims16
A method of achieving a desired preload on tapered roller bearings which rotatably support a gear between first and second transmission housing members in the assembly of a transmission, the method comprising:
- measuring a first distance between a bottom of a first pocket and a mating face of the first transmission housing member;
- selecting a first shim having a desired width based upon the measured first distance;
- positioning the first shim in said first pocket;
- measuring a second distance between a bottom of a second pocket and a mating face of the second transmission housing member;
- selecting a second shim based upon the measured second distance;
- positioning the second shim against the bottom of said second pocket;
- positioning tapered roller bearings in said first and second pockets to rotatably support the gear between the tapered roller bearings;
- and
- bolting the mating faces of the first and second transmission housing member together to achieve the desired preload on the tapered roller bearings.
A method of achieving a desired preload on tapered roller bearings which rotatably support a gear between first and second transmission housing members in the assembly of the transmission, the method comprising:
- optimizing a distance between a mating face of the first transmission housing member and a first reaction surface in a first pocket by selecting and positioning a first shim of a desired width in the bottom of the first pocket such that a top surface of the first shim forms the first reaction surface;
- positioning a first tapered roller bearing against the first reaction surface;
- optimizing a distance between a mating face of a second transition housing member and a second reaction surface of a second pocket by selecting and positioning a second shim having a desired width against the bottom of the second pocket such that a top surface of the second shim forms said second reaction surface in the second pocket;
- positioning a second tapered roller bearing against the second reaction surface in the second pocket;
- rotatably supporting the gear between the first and second tapered roller bearings;
- and
- attaching the mating faces of the first and second transmission housing members together to achieve the desired preload on the tapered roller bearings.
A method of achieving a desired preload when assembling a gear rotatably supported by tapered roller bearings between first and second transmission housing members in a transmission assembly, the method comprising:
- measuring a first distance between a bottom of a first pocket and a mating face of the first transmission housing member;
- selecting a first shim based upon the measured first distance;
- positioning the selected first shim in said first pocket;
- pressing a first tapered bearing cone into said first pocket against said first shim;
- measuring a second distance between a bottom of a second pocket and a mating face of the second transmission housing member;
- selecting a second shim based upon the measured second distance;
- positioning the second shim in said second pocket, and pressing a second tapered bearing cone into said second pocket against said second shim;
- and
- assembling the gear between the first and second tapered bearing cones, and connecting the mating faces of the first and second transmission housing members together to achieve the desired preload.
Dependencies are inferred from the claim text.