Our range of Variable Speed V-Belts includes belts conforming to ISO R 1604, they are designated by e.g. the letter W followed by a number e.g. 16 which is the belts width in mm. This is followed by a number e.g. 500 which corresponds to the pitch length Lp in mm.
Belts not covered by the ISO standards are designated by a code consisting of a set of 3 numbers e.g. 22 which denotes the belts top width followed by e.g. 8 which denotes the belts thickness and e.g. 1000 which denotes the belts inside length Li in mm, therefore e.g. 22x8x1000.