HRG Series Gearboxes
Two-stage helical gearboxes for railway applications
The HRG series gearboxes are two-stage helical railway drives specifically designed for railway traction applications. With gear modifications calculated according to actual operating conditions and non-contact labyrinth sealing systems, they offer exceptional reliability for the most demanding railway environments.
Nominal torque: Up to 7,084 Nm
Engine power: Up to 325 kW
Reduction ratio: 4.57
Lifespan: 1,500,000 km
Main features
- Parallel shaft helical gear design for optimal transmission
- Labyrinth cover systems providing contactless sealing on inlet and outlet shafts
- Rigid, one-piece housing made of GGG40 spherical cast iron for exceptional strength
- Gears designed for reduced maintenance over 30 years of railway use
- Specialized bearings guaranteeing 1,500,000 km of railway use
- Special lubrication channels integrated into the housing
- Gear modifications calculated according to actual working conditions
Technical innovation
The HRG series represents a significant improvement over traditional sealing solutions, with labyrinth systems that eliminate the need for contact seals, thus reducing wear and maintenance requirements.
Detailed technical data
| Setting | Value | Unit |
|---|---|---|
| Reduction ratio [i] | 4.57 | - |
| Nominal torque | 7.084 | Nm |
| Engine power | 325 | kW |
| Nominal input speed | 1.923 | rpm |
| Maximum input speed | 5.427 | rpm |
| Degree of protection | IP65, IP67 | - |
| Serving temperature | -40°C to +120°C | °C |
Gear characteristics
| Characteristic | Specification | Advantage |
|---|---|---|
| Gear type | Two-stage helical | High efficiency, quiet operation |
| Material | Cementitious alloy steel | Extended lifespan |
| Surface treatment | Precision rectification | Optimal transmission accuracy |
| Lifetime | 30 years old / 1,500,000 km | Reduced maintenance |
Technical advantages
| Characteristic | Profit |
|---|---|
| Contactless Maze System | Permanent, wear-free sealing, eliminating oil leaks |
| GGG40 one-piece case | Exceptional rigidity, resistance to shocks and vibrations |
| Maintenance-free gears | Reduction of operating costs over the entire lifecycle |
| Long-life bearings | Increased reliability for critical railway applications |
| Integrated lubrication channels | Optimal cooling and efficient lubrication |
Available options
- Integrated temperature and vibration sensors
- Condition-based monitoring systems
- Anti-corrosion coatings for harsh environments
- Specific adaptations for different bogie configurations
- Mounting kits for different motor interfaces
- Improved drainage and ventilation systems
Railway application areas
The HRG series gearboxes are specifically designed for the most demanding railway traction applications:
- Passenger trains - Multiple unit trains, regional trains, intercity trains
- Heavy transport - Freight locomotives, ore trains
- Urban transport - Subways, trams, commuter trains
- Specialized transport - High-speed trains, mountain trains
- Industrial applications - Shunting locomotives, shunting locomotives
Competitive advantages
Railway reliability
Specifically designed to meet the most stringent railway standards, with a guaranteed service life of 1,500,000 km and extended maintenance intervals that significantly reduce operating costs.
Sealing innovation
The non-contact labyrinth technology represents a break from traditional solutions, eliminating oil leakage problems and seal wear, ensuring consistent performance in all climatic conditions.
Environmental performance
With an operating temperature range of -40°C to +120°C and various degrees of IP protection, HRG gearboxes are suitable for the most extreme railway environments around the world.
Entry type
HRG Series
With tapered input shaft
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