Rossi
G Series - Helical & Bevel Helical
The Rossi G Series defines the standard for high-performance helical and bevel helical gear reducers in modern industrial power transmission. Engineered for universal application across the heaviest-duty sectors—from mining and bulk material handling to steel processing—the G Series combines time-tested mechanical principles with advanced manufacturing precision. Its single-piece, high-rigidity cast iron housing ensures structural integrity under extreme loads, while ground helical and Gleason spiral bevel gear pairs deliver exceptional efficiency and low-noise operation. For plant engineers and procurement teams, the G Series means maximum uptime, reduced maintenance costs, and a scalable, cost-effective platform that adapts to virtually any drive configuration. With a torque capacity reaching 103,000 Nm and a wide ratio spread, the G Series offers strength, accuracy, and reliability without compromise.
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Trusted by Industry Leaders
Universal Symmetrical Cast Iron Housing
A single-piece, high-stiffness housing supports horizontal and vertical mounting on multiple faces, simplifying machine integration and enhancing durability.
Case-Hardened & Ground Helical Gear Pairs
Precision-ground helical and Gleason spiral bevel gears ensure high mechanical efficiency, reduced noise, and longer service life under continuous duty.
Wide Torque & Ratio Flexibility
With torques up to 103,000 Nm and ratios from 6.3 to 12,500 across 18 sizes, the G Series matches nearly any application requirement.
Ready for Large IEC & NEMA Motors
Designed to integrate seamlessly with high-power standard motors, maximizing torque transmission without compromising drivetrain reliability.
Extended Center-Distance Housing for U-Layout
The extended input-output center distance configuration offers enhanced thermal performance and mechanical flexibility for space-constrained installations.
Heavy-Duty Reliability with Minimal Maintenance
Robust construction and optimized lubrication reduce wear, minimize unplanned downtime, and extend maintenance intervals.
Why Choose Rossi G Series Gearmotors for Heavy-Duty Applications
When uptime and durability are non-negotiable, the G Series delivers unmatched reliability. Every component—from the case-hardened gear pairs to the symmetrically ribbed cast iron housing—is engineered to withstand the shock loads, continuous operation, and harsh environments typical of mining, steel, and cement plants. By choosing the G Series, engineering teams benefit from a platform that has been refined over decades, supported by global technical expertise and rapid spare-part availability. The outcome is a drive solution that lowers total cost of ownership while sustaining peak productivity in the world’s most demanding industrial environments.
Applications and Industries Served by Helical Bevel Gear Reducers
Rossi G Series gear reducers and gearmotors power critical machinery across a broad spectrum of heavy industries. They are the preferred drive choice for large conveyor systems, bucket elevators, agitators, mixers, and crushers. Typical sectors include mining and quarrying, iron and steel production, cement and aggregate processing, marine propulsion systems, and wastewater treatment plants. Wherever high torque, precise speed control, and dependable 24/7 operation are required, the G Series provides a modular and quickly configurable solution that engineering and procurement teams can specify with confidence.