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Pitch Drive Planetary Gearbox Reducer for Wind Turbine
Planetary Gearbox
Pitch Drive Planetary Gearbox Reducer for Wind Turbine (4).jpg

Pitch Drive Planetary Gearbox Reducer for Wind Turbine

The Pitch Drive Planetary Gearbox Reducer is a mission-critical component in modern wind turbine pitch control systems. Designed to precisely adjust the angle of turbine blades in real time, it ensures optimal aerodynamic efficiency, power regulation, and emergency shutdown capability under varying wind conditions.

Engineered for extreme reliability, this gearbox delivers high torque density, exceptional fatigue resistance, and long service life—even in harsh offshore or onshore environments with wide temperature swings, vibration, and continuous cyclic loading.

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    product Information

    Key advantages include

    Ultra-compact design with high power-to-weight ratio 
    Precision backlash control for accurate blade positioning 
    Integrated sealing and lubrication systems for maintenance-free operation 
    Compliance with IEC 61400-23 and GL/DNV certification standards 
    Customizable interfaces for major pitch motor and bearing manufacturers
    By enabling rapid, smooth, and fail-safe pitch actuation, this planetary reducer plays a vital role in maximizing energy yield while protecting the turbine from overspeed and storm damage.
    Pitch Drive Planetary Gearbox Reducer for Wind Turbine (4)

    Technical Specifications

    Output torque range:

    1000-80000 N_m

    Gear Ratios

    i=300-2000

    Support

    slew support (with flange mounted)

    Electric Brake

    DC and AC type

    Output shaft

    splined or with integral pinion: output shafls supported by heavy duty capacity bearings

    Applicable motors:

    lEC electric motors

    Tyрe

    Nominal Output Torque (N.m )

    Peak Static Output Torque (N.m )

    Ratio (i)

    700L

    1000

    2000

    297-2153

    701L

    2000

    4000

     297-2153

    703AL

    2500

    5000

    278-1866

    705AL

    5000

    10000

    278-1866

    706BL4

    8000

    15000

    203-2045

    707AL4

    12000

    25000

    278-1856

    709AL4

    18000

    30000

    278-1856

    711BL4

    35000

    80000

    256-1606

    710L4

     25000

     50000

     329-1420

    711L4

     35000

     80000

     256-1606

     713L3

     50000

     100000

     250-1748

     715L4

     80000

     140000

     269-1390

    Product Advantages

    High Torque Density & Compact Design

    Multi-stage planetary architecture maximizes torque transmission in a minimal envelope—critical for space-constrained nacelle installations.

    Extreme Durability Under Cyclic Loading

    Gears and bearings are made from vacuum-degassed alloy steel (e.g., 18CrNiMo7-6), carburized, hardened, and precision-ground to withstand millions of pitch cycles over 20+ years.

    Precision Motion Control

    Low backlash (<10 arcmin) and high torsional stiffness ensure accurate blade angle adjustment, improving power curve tracking and grid compliance.

    Fail-Safe Performance

    Validated for emergency feathering under loss-of-power scenarios, meeting stringent safety integrity level (SIL) requirements for pitch systems.

    Advanced Sealing & Corrosion Protection

    Double-lip radial shaft seals, stainless steel fasteners, and optional epoxy coating protect internal components from humidity, salt spray, and dust—ideal for offshore turbines.

    Global Compatibility & Customization

    Designed to integrate seamlessly with leading pitch motors (e.g., AMK, Baumüller, Lenze) and pitch bearings (e.g., SKF, Rothe Erde, IMO). Custom flanges, shafts, and sensors available upon request.

    How to Select the Right Model

    The pitch drive planetary gearbox functions as a torque amplifier between the electric pitch motor and the turbine blade hub. 
    When the wind speed changes, the turbine’s control system sends a signal to the pitch motor, which rotates at high speed but low torque. The planetary gearbox reduces this input speed while multiplying torque—typically by a factor of 100:1 to 500:1—delivering the high force needed to rotate multi-ton blades. 
    Pitch Drive Planetary Gearbox Reducer for Wind Turbine (1)
    The gearbox uses a multi-stage planetary gear train: 
    1st stage: Sun gear drives multiple planet gears mounted on a carrier. 
    2nd/3rd stages: Cascaded planetary sets further increase reduction ratio. 
    Output: The final planet carrier connects directly to the pitch pinion, which meshes with the internal gear of the blade bearing.
    This design distributes load evenly across multiple gear meshes, minimizing stress, noise, and wear—while enabling bidirectional rotation for both normal pitching and emergency feathering.

    Applications

    Used by Tier-1 wind OEMs and independent service providers worldwide for new builds, repowering projects, and spare parts replacement.

    Pitch Drive Planetary Gearbox Reducer for Wind Turbine (2)

    • Onshore Wind Turbines (1.5 MW to 6+ MW) 

    • Offshore Wind Turbines (4 MW to 15+ MW, including floating platforms) 

    • Direct-Drive & Doubly-Fed Induction Generator (DFIG) Systems 

    • Retrofit & Aftermarket Pitch System Upgrades 

    • Wind Turbine Test Benches & Simulation Platforms

    product Information

    How to Select the Right Model

    To ensure compatibility and optimal performance, please provide the following information:
    1.Turbine model & rated power (e.g., Vestas V150-4.2 MW, Siemens Gamesa SG 5.0-145) 
    2.Required nominal and peak torque (including emergency stop load) 
    3.Pitch motor brand & model (for flange/shaft matching) 
    4.Pitch bearing interface (pinion module, number of teeth, pressure angle) 
    5.Environmental conditions (onshore/offshore, temperature range, corrosion class) 
    6.Certification needs (DNV, TÜV, UL, local grid codes)
    Our engineering team provides free technical consultation, including FEA-based load validation, CAD models (STEP/IGES), and lifecycle cost analysis.
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    About Our Factory

    We are a leading Chinese manufacturer of high-precision gearboxes for renewable energy, with over 15 years of specialization in wind turbine pitch and yaw systems. Our 35,000 m² ISO 9001 & ISO 14001-certified facility is equipped with:
    German EMAG and Italian FPT machining centers 
    Liebherr and Gleason-Pfauter gear grinding machines 
    ZEISS and HEXAGON CMMs for micron-level quality control 
    Full-load tes t benches simulating 20+ years of pitch cycling
    Pitch Drive Planetary Gearbox Reducer for Wind Turbine (3)
    All pitch drive gearboxes undergo 100% dynamic testing under simulated wind loads before shipment. Our products comply with IEC 61400-23, DNV-ST-N001, and GL Guidelines, and have been deployed in wind farms across Europe, North America, Australia, and Asia. 
    Partnering with global wind leaders, we are committed to delivering reliable, lightweight, and service-friendly drivetrain solutions that support the world’s transition to clean energy.
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    LET'S DISCUSS YOUR PROJECT

    For inquiries about our products or pricelist, please leave your email to us and we will be in touch within 24 hours.