Brevini's new 'High Power' series combines the efficient epicyclic gear design of its S Series planetary gearbox with the modular advantages provided by PIV's complementary Posired 2 family of helical and bevel/helical gearboxes. By combining the best features of both technologies, the new gearboxes overcome the problems commonly experienced when using traditional bevel/helical units with high reduction ratios - impractical size, increased power losses, high cost and so on.
Positioning the planetary gears at the output end, where speed is slow and torque is high, and using the bevel/helical gears for the input stages, ensures that both elements are used to their best advantage. The design avoids the need for additional cooling in almost all cases, reducing cost and increasing reliability. There are five standard sizes, including a wide range of transmission ratios from 100 to 670, nominal torque ratings are from 37,000 to 370,000Nm and nominal power from 160 to 950kW.