| 摘要 |
PROBLEM TO BE SOLVED: To provide a deterioration state determining method of a roller for replacing only the roller to be replaced except for a still normally usable roller, by specifying only the roller having the determinate problem in the roller or its bearing, when operating a device incorporated with the roller.SOLUTION: This deterioration state determining method includes: a monitoring object part making procedure S10 of applying a color and a pattern of changing in a visible way in response to a change in a rotating speed of the roller as a monitoring object part, to a side surface of a plurality of rollers in the device incorporated with the plurality of rollers; and a determining procedure (S102) for determining heating abnormality of a specified roller by specifying the roller less than a standard rotating speed by monitoring and comparing a change pattern of the monitoring object part of the respective rollers (S101) when rotating the plurality of rollers when operating the device. |
