Rossi EP Series Heavy-Duty Planetary Gearmotors
The Rossi EP Series Heavy-Duty Planetary Gearmotor Platform (featured benchmark model: EP 012 / EP 080) represents the pinnacle of Italian industrial gear engineering, designed specifically for extreme applications demanding ultra-high torque density, superior thermal capacity, and continuous 24/7 reliability in mining conveyors, steel rolling mills, port cranes, large agitators, and sugar processing drives[cite: 5]. Built inside high-rigidity **spheroidal graphite cast iron (ductile iron)** housings, Rossi EP Series reducers feature case-carburized and ground alloy steel planet gears (HRC 58-62) housed in a compact modular casing[cite: 5]. Operating with gear stage efficiencies up to 98%, the EP Series spans 12 standardized frame sizes delivering nominal output torques up to **400,000 Nm** and reduction ratios from **1.25 up to 3,150**[cite: 5]. WE DRIVE HONGKONG LIMITED provides 100% original Rossi EP Series equipment supply, CAD drawing matching, thermal calculations, and **WeDrive WD-EP Series 1:1 drop-in replacement units** for cost-sensitive plant revamps.
• Original vs. WeDrive 1:1 Equivalent: WE DRIVE HONGKONG LIMITED supplies 100% original Rossi S.p.A. equipment as well as independent **WeDrive WD-EP Series 1:1 drop-in replacement planetary drives**. All WD-EP units undergo strict CAD overlay checking to ensure output shaft diameters, keyways, center heights, and flange pitch circles match original Rossi units 1:1.
• Factory Validation & Customization: Non-standard planetary ratios, special input IEC/NEMA motor adapters, or custom torque arm brackets require factory engineering verification. Itemized cost disclosures and lead times are provided prior to production.
Technical Specifications
| Featured Benchmark Model | EP 012 / EP 080 Heavy-Duty Planetary Gear Unit (Coaxial / Right-Angle Bevel Input, Spheroidal Graphite Cast Iron Casing, Synthetic Oil Filled)[cite: 5] |
|---|---|
| Brand / Manufacturer | Rossi S.p.A. (Italian High-Precision Industrial Power Transmission)[cite: 5] |
| Product Architecture | EP Series Coaxial Planetary, Bevel-Helical Planetary & Shaft-Mounted Planetary Reducers[cite: 5] |
| Frame Size Range | 12 Standardized Frame Sizes (EP 001, EP 003, EP 007, EP 012, EP 020, EP 040, EP 080, EP 180, etc.)[cite: 5] |
| Max Output Torque Rating | Up to 400,000 Nm Continuous Nominal Output Torque (High Shock Load Capacity)[cite: 5] |
| Reduction Ratio Range (i) | 1.25 to 3,150 (Multi-stage Planetary + Helical/Bevel Combinations)[cite: 5] |
| Mechanical Efficiency | Up to 98% Efficiency per Individual Gear Stage[cite: 5] |
| Housing Material & Seals | Spheroidal Graphite Cast Iron (Ductile Iron); Double-Lip Viton Seals & Forced Lubrication Options[cite: 5] |
Documentation & Resources
1. Rossi EP Series Model Size, Torque Output & Ratio Matrix
Selection matrix for Rossi EP Series planetary gear units. Review frame sizes, maximum output torque ratings, stage configurations, and WeDrive 1:1 replacement mapping:
| Rossi Frame Size | Max Output Torque (Nm) | Stage Configurations | Standard Ratio Range | WeDrive 1:1 Drop-in Model Code |
|---|---|---|---|---|
| Rossi EP 001 - EP 003 | Up to 12,000 Nm | 1, 2, 3 Planetary Stages | 3.15 to 400.0 | WD-EP 003-3.15-M1 |
| Rossi EP 007 - EP 012 | Up to 45,000 Nm | 2, 3, 4 Planetary Stages | 12.5 to 1,000.0 | WD-EP 012-45.0-M1 |
| Rossi EP 020 - EP 040 | Up to 120,000 Nm | 3, 4 Planetary + Bevel Stage | 25.0 to 1,800.0 | WD-EP 040-120.0-M1 |
| Rossi EP 080 - EP 180 | Up to 400,000 Nm | Multi-Stage Heavy Industrial | 1.25 to 3,150.0[cite: 5] | WD-EP 180-3150.0-M1 |
2. Original Rossi vs. WeDrive WD-EP 1:1 Replacement Comparison
When original European planetary gearboxes face 20+ week factory lead times, WeDrive WD-EP series provides a 100% verified drop-in alternative:
| Existing Drive Problem | Production & Financial Risk | WeDrive WD-EP 1:1 Replacement | Mechanical & Delivery Advantages |
|---|---|---|---|
| Long Overseas Lead Times | Unplanned factory shutdown costing tens of thousands in lost daily output | WeDrive WD-EP Fast Supply 2-4 Week Dispatch | Rapid manufacturing cuts delivery times by 75%, restoring plant operation quickly. |
| High Replacement Capital Overhead | Excessive strain on plant maintenance budgets | WeDrive WD-EP Planetary Series 30%-60% Savings | Supplied directly from top Chinese precision gear facilities at significant cost savings. |
| Dimensional Fitting Concerns | Reworking mounting bedplates or cutting drive shafts on site | WeDrive 2D/3D CAD Overlay Check 100% Drop-In Fit | CAD verification ensures output shaft diameter, keyway, and flange holes match 1:1. |
Expert Technical Sourcing & Planetary Drive Integration
Simply provide us with your current Rossi nameplate photo, model code (e.g., EP 012 / 40.0 / M1), or physical mounting drawings, and our engineering team will deliver a 100% verified specification and quotation.
3. Frequently Asked Questions (FAQ) regarding Rossi EP Series
Q1: What mounting options are available for Rossi EP Series planetary units?
A: Rossi EP Series units support flexible mounting orientations including horizontal foot mounting, vertical flange mounting, and shaft-mounted executions with hollow output shafts or shrink discs[cite: 5].
Q2: How does WeDrive ensure that WD-EP replacement gearboxes match original Rossi units?
A: WeDrive engineers execute a 1:1 CAD overlay check covering output shaft diameter, keyway dimensions, center height, flange pitch circle, and torque arm bracket positions. Production proceeds only after 100% dimensional match is verified.
Q3: What lubrication is recommended for Rossi EP Series planetary gearboxes?
A: Synthetic gear oil is recommended to maximize mechanical efficiency (up to 98% per stage)[cite: 5] and extend oil drain intervals. Forced lubrication systems or external oil coolers are supplied for high-thermal severe-duty applications[cite: 5].
Q4: Can Rossi EP Series gearmotors be coupled with standard IEC or NEMA electric motors?
A: Yes. EP Series planetary units feature modular input adapters compatible with standard IEC flanged motors, NEMA C-face motors, hydraulic motors, or solid input power shafts[cite: 5].
Core Benchmark Model Standard Configurations
- Rossi EP 001 Planetary Unit[cite: 5]
- Rossi EP 003 Planetary Drive[cite: 5]
- Rossi EP 007 Heavy Reducer[cite: 5]
- Rossi EP 012 Gearmotor[cite: 5]
- Rossi EP 020 Coaxial Drive[cite: 5]
- Rossi EP 040 Planetary Gearbox[cite: 5]
- Rossi EP 080 Heavy Industrial[cite: 5]
- Rossi EP 180 High Torque Drive[cite: 5]
- Rossi EP Bevel Planetary Unit[cite: 5]
- WeDrive WD-EP 1:1 Drop-in Fit
- WeDrive 1:1 CAD Overlay Check
- Spheroidal Graphite Ductile Iron[cite: 5]
- Carburized 20CrMnTi Alloy Gear
- 400,000 Nm Torque Capacity[cite: 5]
- 30%-60% Cost Saving Replacement
- Fast Express Shipping 2-4 Weeks
- Heavy Mining Conveyor Drive
- Port Crane Winch Reducer
- Steel Mill Roller Gearbox
- WE DRIVE HK Rossi Supplier
