Bonfiglioli HDO drives

Bonfiglioli is introducing additional sizes for its HDO drives to enhance flexibility and durability in heavy-duty applications such as mining, bulk materials handling, building and construction, food and beverage, and water and wastewater recycling.

The added HDO sizes — 71, 81, 91 and 95 — complement the existing Bonfiglioli range from HDO 100–180, which cater to torque requirements from 31,790 to 209,900 Nm. The smaller sizes have torque outputs from 6800 to 23,200 Nm and are made from a monobloc housing design for added rigidity. The HDO drives also use case-hardened gears, which are strong and durable.

The HDO is a rectangular bevel helical gearbox, as opposed to square helical bevel gearboxes used in less demanding applications. The backstop (or anti-runback) is positioned on the outside of the HDO drives, which makes it easily accessible for maintenance. The whole drive does not need to be dismantled to access it.

Another feature of the HDO gearboxes is their symmetrical design. They are designed with both horizontal and vertical symmetry for ease of installation in a wide variety of customer applications.

Applications that will benefit from the smaller HDO sizes include floating cells, apron feeders, conveyors, cranes, bucket elevators, asphalt and other mixers, aerators and band screeners.

The HDO drives will also come with an ATEX-certified option for use in explosive atmospheres, the HDO-EX. This option comes with compliance certificates for painting, surface protection, mounting and sensors, along with ATEX application verification.