Type mm Top Width mm Belt Thickness º Angle W16 17 6 28 W20 21 7 28 W25 26 8 28 W31.5 33 10 28 W40 42 13 28 W50 52 16 28 W63 65 20 28 W80 83 26 28 W100 104 32 28 1022V 16 6 22 1422V 22 8 22 1922V 30 11 22 2322V 36.5 12 22 2926V 46 14 26 4430V 70 17 30 4836V 76 22 36 6236V 100 26 36