| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sealed rolling bearing which is sealed with grease and has a simple bearing structure and whose deteriorated state accompanying deterioration of the grease can be easily grasped without necessitating complicated device and complicated measuring operation for deterioration determination of the grease. <P>SOLUTION: In the sealed rolling bearing including a ball 5 interposed between an inner ring 1 and an outer ring 2 and a sealing plate 11 at both end parts in an axial direction of a bearing space between the inner ring 1 and the outer ring 2, the grease sealed in the bearing space is hermetically sealed by the sealing plate 11. The sealing plate 11 is provided so that a display part made of a thermochromism material whose hue is irreversibly changed according to the bearing temperature can be visually confirmed from an external part of the bearing. Thereby an outer surface of both ends in the axial direction of the sealing plate 11 can be visually confirmed from an external part of the bearing and thus to be a display part displaying thermal history of the grease 9. When the outer surface of the sealing plate 11 is viewed, the deteriorated state of the grease 9 can be confirmed on the basis of the thermal history confirmed from its hue. Since the outer surface in the axial direction of the sealing plate 11 is the display part, the structure of the bearing provided with a display part is made simple. <P>COPYRIGHT: (C)2012,JPO&INPIT |
