PR Series
Planetary gearboxes for wind turbine blade-nacelle orientation systems
The PR series gearboxes are compact planetary units specifically designed for blade and nacelle pitching systems in wind turbines. Their robust construction allows them to withstand the high radial loads and peak torques characteristic of wind turbine applications under extreme conditions.
Reduction ratio: 184.31 - 1.093
Rated torque: 5,520 - 32,650 Nm
Static torque: 22,000 - 160,600 Nm
Configurations: 3 different sizes
Main features
- Compact planetary design for high reduction ratios in a small footprint
- Reinforced bearings and flange to withstand extreme radial and axial loads
- Integrated 8620 steel pinion shaft for exceptional durability and strength
- Ability to withstand peak torques up to 160,600 Nm
- Modular design allowing for simplified on-site maintenance
- Enhanced protection against harsh environmental conditions (salt, humidity, extreme temperatures)
- Optimized lubrication system for extended service life
Product range
Our PR series includes 3 different sizes covering a wide torque range from 5,520 to 32,650 Nm, specially designed for critical applications in the wind industry.
Detailed technical data
| Setting | Value | Unit |
|---|---|---|
| Nominal torque | 5,520 - 32,650 | Nm |
| Static torque | 22,000 - 160,600 | Nm |
| Reduction ratio | 184.31 - 1.093 | - |
| Degree of protection | IP65, IP66, IP67 | - |
| Serving temperature | -40°C to +80°C | °C |
| Efficiency | ≥ 94% | - |
| Noise level | ≤ 68 dB(A) | - |
Size chart
| Reduced size | Report [i] | Nominal torque [Nm] | Static torque [Nm] | mxz |
|---|---|---|---|---|
| P.R2333L.P1 | 184,31 | 5.520 | 22.000 | 12 x 13 |
| P.R2734L.P1 | 1.061,9 | 30.500 | 60.000 | 18 x 12 |
| P.R3704L.P1 | 1.093 | 32.650 | 160.600 | 22 x 13 |
Technical advantages
| Characteristic | Profit |
|---|---|
| Planetary design | High reduction ratios in a compact footprint and uniform load distribution |
| Reinforced bearings | Exceptional resistance to high radial and axial loads in wind energy applications |
| Tree 8620 | Excellent strength-to-weight ratio and durability in harsh conditions |
| Reinforced flange | Secure mounting and efficient transmission of high torques |
| High IP protection | Resistance to extreme environmental conditions (humidity, dust, salt) |
Available options
- Integrated position and speed sensors
- Safety braking systems
- Special anti-corrosion coatings for marine environments
- Automatic lubrication units
- Remote monitoring and diagnostic systems
- Custom configurations according to the wind turbine manufacturer's specifications
Areas of application
The PR series gearboxes are specifically designed for critical applications in the wind power industry:
- Blade orientation systems - Precise control of the blade angle of attack for optimized energy production
- Gondola orientation - Precise positioning of the gondola facing the wind
- Onshore and offshore wind turbines - Design adapted to extreme land and marine environments
- Security systems - Mechanisms for protecting and securing equipment
- Wind turbines of all power ratings - From 2 MW to 8+ MW depending on the model
Competitive advantages
Extreme reliability
Specifically designed to withstand the harsh operating conditions of wind turbines with dynamic load cycles and extreme temperatures, ensuring maximum operational availability.
Optimized maintenance
Modular design and extended maintenance intervals reduce operating costs and downtime in hard-to-reach environments.
Energy efficiency
Rendement élevé (≥94%) et conception optimisée pour minimiser les pertes énergétiques, contribuant à l'efficacité globale de la production d'énergie éolienne.
Yaw Reducers
Series
P.R3704L.P1
Series
P.R2734L.P1
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