| 摘要 |
PROBLEM TO BE SOLVED: To suppress noise and heat generation during traveling of a high load transmission V-belt B over a long period and to improve durability even in a severe using condition. SOLUTION: A projecting part 17a and a recessed part 17b are formed on one side of at least a lower side part 16a of a depth butt face 16 abutted with a center pillar 15c of a block 10 and a tension belt 1 thereon and the other side, respectively, so as to extend along the longitudinal direction of the center pillar 15c and be engaged with each other.
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