Browse Prior Art Database

Preloaded Bearing

IP.com Disclosure Number: IPCOM000086003D
Original Publication Date: 1976-Jul-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Brogdale, MA: AUTHOR [+2]

Abstract

This configuration eliminates the deformation of the inside diameter of a wheel or pulley, by use of injection molding of resilient material to form an annular bushing between a central bearing and the outer rim of the pulley or roller. Figs. 1 and 2 are schematic cross sections and partial front views of an assembly having this configuration.

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Preloaded Bearing

This configuration eliminates the deformation of the inside diameter of a wheel or pulley, by use of injection molding of resilient material to form an annular bushing between a central bearing and the outer rim of the pulley or roller. Figs. 1 and 2 are schematic cross sections and partial front views of an assembly having this configuration.

A mold is employed having a cylindrical cavity having a diameter equal to the maximum outside diameter of the roller 3. A central locating pin is provided in the center of the mold. The roller 3 is placed in the mold, followed by the two bearing assemblies 5 and 7, with a spacer 9 between the bearings. The center of the bearings is then concentric with the center of the roller 3 to within the desired tolerance.

Thereafter, suitable plastic material is injection molded to form an annular hub 11 between the bearings 5, 7 and the inside diameter of the roller 3. Axial grooves machined in the inner surface of the roller serve as anchors or mechanical locks to retain the plastic hub 11 in place.

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