All V-belt pulleys are compliant with current legislation and are made of cast iron GG 20 with protective phosphate.

Running in normal standard, the pulleys are statically balanced and this is sufficient for peripheral speeds up to 25 m/s.

For higher speeds is essential dynamic balancing can be provided on request.

The Chiaravalli Group SpA is able to perform, upon request, balancing pulleys with diameters up to 630, with balancing CNC, accompanying certificate of balancing performed. Over 35 m / sec, the pulleys in cast iron are not the most suitable and it requires the use of high-strength material.

Dimensions shown on the dimensional tables are not binding even if  they are respected as far as possible.