| 摘要 |
PROBLEM TO BE SOLVED: To prevent muddy water from entering a fitting surface of a spindle to an inner ring by providing an externally fixable sealing on an outer cicrcumferential surface of an end part of the inner ring, and shutting off the fitting surface of the spindle to the inner ring from the outside space by a seal lip formed of an elastic material to constitute the seal ring. SOLUTION: An inside diameter side seal lip 23a formed of an elastic material such rubber is adhered to an outer circumferenetial edge part of an inside diameter side core 22a over the whole circumference. In particular, a tip edge of a lip part 33c of the seal lip 23a is allowed to elastically abut on the surface of a stepped part 5 over the whole circumference with a roller bearing assembled with the circumference of a spindle 2, and covers a gap 31 close to the outside diameter. Thus, muddy water, etc., can be prevented from entering a fitting surface of the spindle 2 to inner rings 7, 7 only by changing the shape of the inside diameter side seal lip 23a of an inside diameter side seal ring 19a to constitute an assembled seal ring 17a. In particular, troublesome working such as newly adding any parts or forming a locking stepped part to the parts, is unnecessary. |
