Patent ID: 9169080
Filing Date: 2015-10-27
Classification: B65G,F16C,Y10T

Abstract:
1. A roller structure comprising: a cylindrical casing having an outer wear surface and an inner surface provided by a bore extending through the cylindrical casing; at least a first and second anti-friction bearing positioned within the bore in contact with the inside surface of the cylindrical casing, wherein the first anti-friction bearing that is proximate to a first opening to the bore and the second anti-friction bearing is proximate to a second opening to the bore; a first bushing proximate to a first side of the casing, the first bushing having a first flange and a first cylindrical body, wherein the first flange is in contact with an outer sidewall face of the inner ring of the first anti-friction bearing and the first cylindrical body is in contact with a bore face of the first anti-friction bearing, wherein the first cylindrical body has a first length; a second bushing proximate to a second side of the casing, the second bushing having a second flange and a second cylindrical body having a second length that is greater than the first length, wherein the second flange is in contact with the outer sidewall face of the inner ring of the second anti-friction bearing and the second cylindrical body is in contact with the bore face of the second anti-friction bearing and the bore face of the first anti-friction bearing; and a spacer between the first anti-friction bearing and the second anti-friction bearing, wherein the spacer is in contact with the inner sidewall face of the inner ring of the first anti-friction bearing and the inner sidewall face of the inner ring of the second anti-friction bearing.