Lab tests have shown that the tensile decay properties of cord are truly World Class. The body rubber compound is a highly engineered synthetic rubber compound, specially compounded for cool running, flexibility, crack resistance, and excellent bonding to the outer fabric and tensile cords.
The Tie-Band backing joins the individual belts. It is made out of especially heavy duty, directionally woven fabric encapsulated in a tough rubber case to give excellent flexibility around the pulleys. In the transverse direction it offers an extremely strong tie band across the top of the belts, and very importantly the tie band has superb adhesion to each individual belts. The joined or banded belts are recommended for high shock load and pulsating drives where extra stability is beneficial.
All belts of a given size are manufactured to run interchangeably in a matched set. SPB, SPC, 9J, 15J and 25J banded belts are manufactured to fit ISO standard dimension multi-groove pulleys.
Belt Angle is approximately 40 degrees Belts are constructed of highly engineered, high performance components as single wrapped belts The joined or banded belts are recommended for high shock load and pulsating drives where extra stability is beneficial.