Belts - Curele trapezoidale - Multiple standard profile V-belts
They replace simple V-belts with parallel mounting, with the advantage that unequal elongations of the component parts are avoided and they are able to transmit extremely high powers on relatively low rotation speeds.
They are mainly used for croppers in agriculture, but also in heavy industry fields (metallurgy, cement, coil, etc.).
Their profile can respect the ISO, narrow or standard V-belts or the American RMA/PMTA standard in which case they can also be toothed.
Symbolization: same as simple V-belts, with the specification the prefix is replaced by the number of belts used to compose a multiple V-belt band.