| 摘要 |
PROBLEM TO BE SOLVED: To provide a toothed belt capable of preventing jumping even in running under a high load by reinforcing a tooth part and improving the durability by maintaining the resistance against tooth chipping. SOLUTION: This toothed belt 1 has a plurality of tooth parts 2 arranged at a predetermined interval along the direction of length and a back part 4 in which a core wire 3 is buried, and a tooth cloth 5 is bonded on a surface of the tooth part 2. The tooth part 2 is made of a rubber composition produced by blending silica of 10 to 30 mass parts in polymer of 100 mass parts in which polymer complex produced by blending hydrogenated nitrile rubber and unsaturated carboxylic acid metal salt at a mass ratio of 40 to 60 to 50 to 50 and hydrogenated nitrile rubber are blended at a ratio of 70 to 30 to 20 to 80 and forming bridge by organic peroxide. |
