Wrapped wedge belts are designated by letters standing for their cross-section, e.g. SPA followed by a number e.g. 1600 which specifies the belts pitch length Lp in mm. Due to their high power ratings savings can be made over classical v-belts, smaller pulley diameters and reduced numbers of belts and be incorporated into more compact drives. Wedge belts are produced to BS3790, DIN 7753 and AFOR T 47-117 standards. They are manufactured in the cross-sections SPZ, SPA, SPB and SPC
in a range of over 400 lengths.

Belt Section SPA