| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealed roller bearing capable of preventing moisture from permeating a bearing space and grease from leaking while stabilizing at a low level the bearing torque associated with slide contact of a contact seal on the outside after preventing deterioration in sealing performance due to adhesion of mud water. SOLUTION: A bearing space between an inner ring 1 and an outer ring 2 is sealed with contact seals 5, 6. Grease A whose space volume ratio is 40-70% is sealed in a space between two inner and outer contact seals 5, 6. After preventing deterioration in sealing performance due to adhesion of mud water, moisture is prevented from permeating a bearing space, while stabilizing at a low level the bearing torque associated with slide contact of a contact seal 6 on the outside. In addition, grease is prevented from leaking. COPYRIGHT: (C)2006,JPO&NCIPI
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