Applications for Transmission Belt

Friction power transmission belt and toothed belt are utilized as power transmission means from of old. For example, V-belt and V-ribbed belt are generally used as an auxiliary machine driving belt of automotive engine, a toothed belt is generally used as an OHC (overhead camshaft) driving belt, and raw edge cogged V-belt is generally used as a CVT (continuously variable transmission) driving belt. In those uses, demands in the increase of transmission power and the compactification of layout recently become severe, and furthermore, the development of products capable of withstanding the use under high temperature and low temperature conditions are desired.

A power transmission belt includes a cured product of a rubber composition containing a rubber component containing an ethylene-α-olefin elastomer, an α,β-unsaturated carboxylic acid metal salt, magnesium oxide, orga

nic peroxide and inorganic filler. A proportion of the magnesium oxide is 2 to 20 parts by mass per 100 parts by mass of the rubber composition and is 5 parts by mass or more per 100 parts by mass of the α,β-unsaturated carboxylic acid metal salt.

The present invention relates to a power transmission belt including a cured product of a rubber composition containing an ethylene-α-olefin elastomer, capable of realizing high hardness and high modulus.

This article comes from justia edit released