Rossi Gearmotors, Planetary & Heavy Industrial Gearboxes

Renowned worldwide for engineering excellence, structural rigidity, and modular versatility, Rossi S.p.A. (Moog Group) delivers top-tier power transmission solutions. Explore our comprehensive catalog covering Rossi Coaxial Helical Gearmotors (E Series), Bevel-Helical & Parallel Shaft Gearboxes (G Series), Epicyclic Planetary Drives (EP Series), Worm Gearmotors (A Series), and Heavy Duty Extruder Gear Units. WE DRIVE HONGKONG LIMITED supplies 100% original Rossi equipment with full factory certifications and global express delivery.

Italian Engineering Standard — Rossi S.p.A.:
Rossi is an Italian pioneer in drive technology, celebrated for introducing single-piece monolithic cast-iron housings that maximize mechanical strength and torsional stiffness under severe operational duty.

Engineering Advantage & Technical Ecosystem:
• Monolithic Cast Iron Housings: Unmatched structural rigidity preventing gear deflection under heavy shock loads.
• Modular System (E, G, EP, A Series): Standardized dimensions and interchangeable motor mounts for rapid retrofitting and flexible installation.
• Extreme Industrial Torque: Heavy industrial helical and planetary gear units capable of output torques exceeding 3,000,000 Nm.
• WE DRIVE HONGKONG LIMITED provides technical type code decoding, ratio verification, and global express supply.

Core Product Directory

Select a Rossi product series below to explore technical datasheets, output torques, reduction ratios, and motor coupling configurations:

E SERIES

Coaxial Helical Gearmotors
(Size 32 to 180, Inline Drives)

G SERIES

Parallel & Bevel-Helical
(Size 40 to 631, Heavy Duty)

EP SERIES

Epicyclic Planetary Drives
(Torque up to 3,000,000 Nm)

A SERIES

Worm Gearmotors & Reducers
(Size 32 to 250, Quiet Right Angle)

EXTRUDER DRIVES

Heavy Extruder Gearboxes
(Heavy Thrust Bearing Assemblies)

S SERIES

Heavy Duty Helical Units
(Monolithic Heavy Iron Frames)

SERVOREDUCERS

Low Backlash Servo Drives
(Precision Servo Coupling)

ELECTRIC MOTORS

IEC Premium Efficiency AC
(0.12 kW to 315 kW Motors)

Rossi Gearbox & Gearmotor Range Selection Matrix

Comprehensive technical selection matrix for Rossi coaxial helical, parallel shaft, bevel-helical, planetary, and worm speed reducers:

Series Designation	Frame Sizes Covered	Max Output Torque (Nm)	Reduction Ratio Range (i)	Key Features & Construction
E Series (Coaxial Helical)	Size 32 to Size 180	100 Nm - 10,000 Nm	2.24:1 to 6,300:1	Inline Helical Monolithic casing, high efficiency gearing
G Series (Parallel & Bevel-Helical)	Size 40 to Size 631	1,200 Nm - 670,000 Nm	2:1 to 1,600:1	Monolithic housing, ground tooth profile, heavy overhung load support
EP Series (Epicyclic Planetary)	Size 001A to Size 710A	1,000 Nm - 3,000,000 Nm	3.5:1 to 15,000:1	Ultra Heavy Torque Compact footprint, high shock resistance
A Series (Worm Gearmotors)	Size 32 to Size 250	30 Nm - 19,000 Nm	7:1 to 16,000:1	Rigid cast iron, universal mounting, ultra-quiet operation
Extruder Gear Units	Size 100 to Size 451	3,000 Nm - 150,000 Nm	6.3:1 to 28:1	Reinforced thrust bearing housing designed for plastic extruders

Rossi Legacy Drive Upgrade & Cross-Reference Guide

Upgrade paths for legacy Rossi drive units or competing European gearboxes to current generation Rossi monolithic gearmotors:

Legacy / Competing Model	Current Rossi Equivalent	Key Performance & Construction Advantages
Legacy Coaxial Helical Reducers	Rossi E Series Coaxial Gearmotor Direct Upgrade	Monolithic cast iron housing eliminates split-casing flex and oil leaks.
Legacy Split-Case Bevel Gearbox	Rossi G Series Bevel-Helical Gearbox Direct Upgrade	Higher thermal capacity, ground teeth for lower noise, increased load rating.
Standard Heavy Industrial Reducer	Rossi EP Series Planetary Drive Compact Footprint	Reduces gearbox weight by up to 50% while delivering identical output torque.

Expert Technical Sourcing & Global Express Supply

WE DRIVE HONGKONG LIMITED specializes in technical sourcing, type code decoding, and global express supply for the entire Rossi S.p.A. Power Transmission portfolio. Whether your facility requires an inline coaxial helical gearmotor (MR E 50, MR E 80, MR E 100 models), a heavy bevel-helical gearbox (MR 2IV 125, MR 3IV 160 models), an EP planetary drive, an A series worm gearmotor, or an extruder drive, we supply 100% original equipment directly from factory channels.

By providing us with your existing Rossi nameplate serial number, catalog type designation, or full specification code (e.g., MR E 80 UO2A - 28x250 - 14.5 or R 2I 160 UP1A), our technical engineering team verifies mounting positions, shaft dimensions, input motor flange standards, and exact gear ratios to ensure a 100% compliant replacement quotation and rapid delivery.

Core Benchmark Model Standard Configurations

MR E 32 UO3A (0.37 kW Inline)
MR E 50 UO3A (0.75 kW Inline)
MR E 63 UO2A (1.5 kW Inline)
MR E 80 UO2A (3.0 kW Inline)
MR E 100 UO2A (5.5 kW Inline)
MR E 125 UO2A (11.0 kW Inline)
R 2I 80 UP1A (Parallel Helical)
R 2I 100 UP1A (Parallel Helical)
MR 3IV 125 UO2A (Bevel Helical)
MR 3IV 160 UO2A (Bevel Helical)
MR A 50 UO3A (Worm Gearmotor)
MR A 63 UO3A (Worm Gearmotor)
Rossi EP Series Size 002A Planetary
Rossi EP Series Size 005A Planetary
Rossi Extruder Gearbox Size 140
Rossi Monolithic Cast Iron Housing
Rossi Heavy Duty Shaft Mount Gearbox
Rossi Low Backlash Servo Reducer
Rossi IE3 Premium Efficiency Motor
Rossi Dual Shaft Helical Gearbox