| 摘要 |
PROBLEM TO BE SOLVED: To provide a novel fender capable of bringing a strain-reaction characteristic curve within an allowable distortion rate to an ideal shape as much as possible. SOLUTION: A step 14 projectings the outer peripheral face of a second support part 12 one step outward from the outer peripheral face of a first supporting part 11 is provided at the outer peripheral face of the boundary between the cylindrical first support part 11 and a hollow conical second support part 12.
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