Chiaravalli helical gearboxes are a group of drives with simple plan. The gearboxes are designed for two pairs of gear wheels. The helical gearboxes are attached to the machine with a foot or flange. A characteristic feature of these drives is their high efficiency of up to 95%. Gearboxes can be equipped with flanged connection for IEC standard electric motors or solid input shaft with a keyway.
Chiaravalli helical gearboxes are marked with the CHC symbol.
The gearing range of helical gearboxes is from I=4,6 to I= 51,3.