Rossi
P Series - Shaft Mounted
The Rossi P Series is a purpose-designed range of shaft-mounted parallel-shaft gear reducers engineered specifically for belt conveyor drives and similar bulk material handling applications. Featuring a split-housing design—narrow and compact for easy integration into conveyor structures—the P Series mounts directly onto the driven machine shaft, eliminating the need for separate couplings, baseplates, and complex alignment procedures. With a nominal torque capacity up to 11,200 Nm and transmission ratios from 10:1 to 25:1, the P Series provides a simple, durable, and low-maintenance power transmission solution for conveyors in mining, quarrying, cement, recycling, and agricultural processing. For maintenance and engineering teams, the P Series translates into fast installation, minimal spare parts inventory, and a robust drive that delivers years of trouble-free operation in dusty, demanding environments.
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Direct Shaft-Mounting Design
Mounts directly onto the driven shaft with simple torque arm retention—no couplings, alignment, or baseplates required.
Split Housing for Compact Installation
The narrow, two-piece cast iron housing design fits easily into tight conveyor drive locations and simplifies internal access for inspection.
Torque up to 11,200 Nm with Ratios 10
1–25:1: Optimized power range matches the requirements of medium-to-heavy-duty belt conveyor systems.
Minimal Maintenance Requirements
Simple, robust construction with generous oil-bath lubrication minimizes service interventions and extends operating life.
Durable Conveyor-Specific Solution
Engineered from the ground up for the continuous-duty, dusty, and often remote conditions typical of bulk material conveying.
Versatile Application Range
While optimized for belt conveyors, the P Series also reliably drives screw conveyors, rotary screens, mixers, crushers, and bucket elevators.
Why the P Series Shaft-Mounted Gearbox Is the Conveyor Industry Standard
Shaft-mounted gear reducers have become the industry standard for belt conveyor drives because they eliminate the complex, time-consuming, and potentially misaligned installation of a separate foot-mounted gearbox, coupling, and motor baseplate. The Rossi P Series refines this concept with a robust split-housing design that provides exceptional structural stiffness while remaining lightweight and easy to handle during installation. For quarry and mine operators, the result is a conveyor drive that can be fitted quickly—often within hours rather than days—and that runs reliably for years with only periodic oil checks.
Beyond Conveyors: Additional Uses for Rossi P Series Gear Reducers
While belt conveyor head and tail drives represent the primary application, the P Series shaft-mounted gear reducer is equally effective in driving other rotating equipment where a simple, reliable speed reduction is required. These include screw conveyors for bulk powder and grain handling, rotary screens and trommels in aggregate processing, slow-speed mixers and agitators, small crushers, and bucket elevator drives. Its straightforward design makes the P Series a practical, cost-effective choice for any application where a machine shaft is available for direct gearbox mounting and moderate reduction ratios are sufficient.