The materials used depend on the dimension and type of pulleys and are shown in the following list:
Cast iron EN-GJL-250 UNI EN 1561
Steel C45 E UNI EN 10083-1
Aluminium 6082 T6 UNI 9006/4
These items are supplied with a small prebore so that they can be machined according to customers' requirements. Furthermore -for the most common types- also taperlock bore are available, together with timing bars.