V BELT FOR HIGH LOAD TRANSMISSION

Japanese Patent JP2016156483

A

PROBLEM TO BE SOLVED: To provide a V belt in which damage of a tension band hardly occurs, and high load durability is improved at low speed.SOLUTION: A V belt 1 for high load transmission includes a plurality of blocks 10, and a tension band 7. Each block 10 has a lower side projection part 12 and an upper side projection part 5. In a region containing at least a center part of the lower side projection part 12, the relationship between an opening part width a of a fitting groove 3 and a curvature radius b of an upper surface of the lower side projection part 12 is set within a range of 1.3