Friction belt, v profile, envelope, Z section, Z16.5, 10 x 6 x 445 mm, Fenner.

Friction V-belts are an early solution that solved the slippage and alignment problem. The shape of the belt tracks in a mating groove in the Vee pulley (or sheave), with the result that the belt cannot slip off. The belt also tends to wedge into the groove as the load increases, the greater the load, the greater the wedging action, improving torque transmission and making the vee belt an effective solution. The belts have a specially treated jacket to give superior anti-static, heat and oil resistant properties.