Maintenance and Replacement of Brake Pads for Wind Turbines
Key Technical Parameters
| Parameter | Standard Requirement | Impact |
|---|---|---|
| Friction Coefficient | 0.35~0.45, fluctuation ≤5% | Directly determines the magnitude and stability of braking force |
| Operating Temperature | -40℃~+700℃ | Adapts to extreme climatic conditions |
| Service Life | ≥10,000 hours; annual braking ≥500 times | Affects maintenance cost (premature wear increases annual cost by 120,000 RMB per unit) |
| Compressive Strength | Yaw: 10~20 MPa; High-speed shaft: 30~50 MPa | Ensures braking reliability |
| Wear Rate | ≤0.1 mm per 1000 braking operations | Extends replacement interval |
Maintenance and Replacement Guidelines
Daily Inspection
Friction plate thickness (replace if below the minimum specified by the manufacturer)
Brake disc surface condition (cracks, wear, oil contamination)
Hydraulic system pressure and leakage
Abnormal conditions such as unusual noise and vibration
Replacement Interval
Yaw brake pads: 5~10 years (depending on wind speed and yaw frequency)
High-speed shaft brake pads: 3~5 years (or after 1000 emergency brakes)
Main shaft brake pads for direct-drive units: 6~8 years
Installation Specifications
Clean the brake disc surface to remove oil and rust
Apply high-temperature grease evenly to the back of the friction plates
Tighten bolts to the torque specified by the manufacturer
Perform a braking test after completion to confirm normal braking force
