Title

COMPARISON OF MORGOIL® KLX® BEARINGS AND ROLLER BEARINGS TO A TANDEM COLD MILL

COMPARISON OF MORGOIL® KLX® BEARINGS AND ROLLER BEARINGS TO A TANDEM COLD MILL

Authorship

Royo, Gabriel F.; Osgood, Peter N.; Wojtkowski, Thomas C.

Royo, Gabriel F.

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Osgood, Peter N.

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Wojtkowski, Thomas C.

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DOI

10.5151/2594-5297-0077

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Abstract

Bearing selection in any cold mill is very important for the production and quality of strip or tin plate produced. There are two types of bearings available for the load carrying rolls on cold mills: oil film bearings and rolling element bearings. The purpose of this paper is to evaluate the application of the newest MORGOIL® KLX® oil film bearings as compared to roller bearings in this application. In general, both bearings are suitable for use on backup rolls within the context of design engineering theory. Practically, it has been proven that accuracy requirements for HAGC equipped mills has limited bearing selection to keyless type oil film bearings and cylindrical roller bearings with interference fit inner races. The newest MORGOIL KLX bearing is a keyless bearing designed to reduce mill capital investment and operational costs. This paper will compare the newest MORGOIL KLX to cylindrical roller bearings for a five stand tandem cold mill. Comparisons of gauge quality, bearing life, and cost are made. Also included is an example of on-gauge performance. Both bearing types have their strengths but experience has shown that oil film bearings are superior in highly loaded and/or higher speed applications. The stiffer roll neck resulting from the MORGOIL KLX design is an added advantage for gauge control.

Bearing selection in any cold mill is very important for the production and quality of strip or tin plate produced. There are two types of bearings available for the load carrying rolls on cold mills: oil film bearings and rolling element bearings. The purpose of this paper is to evaluate the application of the newest MORGOIL® KLX® oil film bearings as compared to roller bearings in this application. In general, both bearings are suitable for use on backup rolls within the context of design engineering theory. Practically, it has been proven that accuracy requirements for HAGC equipped mills has limited bearing selection to keyless type oil film bearings and cylindrical roller bearings with interference fit inner races. The newest MORGOIL KLX bearing is a keyless bearing designed to reduce mill capital investment and operational costs. This paper will compare the newest MORGOIL KLX to cylindrical roller bearings for a five stand tandem cold mill. Comparisons of gauge quality, bearing life, and cost are made. Also included is an example of on-gauge performance. Both bearing types have their strengths but experience has shown that oil film bearings are superior in highly loaded and/or higher speed applications. The stiffer roll neck resulting from the MORGOIL KLX design is an added advantage for gauge control.

Keywords

Oil film bearings; Rolling element bearings; Backup roll bearings

Oil film bearings; Rolling element bearings; Backup roll bearings