| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling bearing with a sealing device, which can control pressure variations in the bearing and increases the sealing property of the bearing by only adding a simple mechanism to the bearing, and thereby which can prevent leakage of a lubricant or intrusion of foreign substances from the outside.SOLUTION: Each end of a bearing in the axial direction and between an outer ring 11 and an inner ring 12A includes a sealing device 15 for sealing the inner part of the bearing. The core metal 21 of the sealing device 15 is formed into a ring having an approximately L-shaped cross-section and has a plurality of oblong holes 24 disposed on the side face of the core metal and extending in a circumference direction, and a columnar part formed between adjoining oblong holes 24 and connecting the outer circumference side and the inner circumference side of the core metal 21. An elastic sealing body 22 of the sealing device includes a lip part 22a coming into slidable contact with the outer ring 11 or the inner ring 12, and a thin elastic deformation part 26 formed to block the oblong holes and elastically deforming in accordance with an inner pressure of the bearing to keep the inner part of the bearing to a fixed pressure. |
