Decision inputs
- Main bearing / gearbox position and configuration
- Design load spectrum
- Speed range and temperature
- Lubrication and sealing
- Maintenance interval and accessibility
APPLICATION SOLUTION
Wind turbine bearing preload
Wind turbine main and gearbox bearings use disc spring preload to cancel clearance, balance load and compensate deflection; this page summarizes preload constructions, friction torque verification and selection focus points.
ENGINEERING PROBLEM
Main bearings, gearbox tapered roller bearings and pitch/yaw mechanisms face alternating loads and fretting; clearance-free preload and predictable friction behaviour are required.
BOUNDARY
This page describes a decision pattern and does not promise size or performance for another operating condition.
Solution pattern
- Preload main bearings clearance-free with disc springs (patented constructions)
- Preload gearbox tapered roller bearings with plate spring stacks to balance load
- Validate pitch/yaw preload schemes against rig friction torque data
Key risks
- Improper preload causes raceway fretting wear
- Temperature rise breaks down the lubricant film
- Extreme gust loads over-travel the springs
Verification plan
- Rig friction torque tests compared with models
- Assembly records of preload and clearance
- Load distribution calculation review
- Vibration and temperature monitoring in operation
Source-backed correspondences
| Summary | Load | Travel | Source |
|---|---|---|---|
| 风电轴承预紧——按preload目标预选产品族；场景摘要仅供决策参考，不构成对其他工况的产品承诺。 | 按主轴承预紧力目标 | 轴向游隙/热补偿 | Source ↗ |
Evidence (library locators)
Every technical claim traces to a specific asset version and page; restricted sources show locator metadata only.
- 174 2018 WES Pitch Bearing Friction Torque Models pdf PDF p.1 · mechanism(internal source; excerpt not public)
- EP2665942B1 IMO Rotor Bearing Wind Turbine Disc Spring Preload PDF p.1 · mechanism(internal source; excerpt not public)
- TRIBOLOGIA 2018 Plate Springs Preloading Tapered Roller Bearings Wind Turbine Gearbox PDF p.1 · mechanism(internal source; excerpt not public)
- 164 SPIROL How Deflection Range Affects the Performance of Disc Springs 白皮 PDF p.2 · mechanism(internal source; excerpt not public)
- TRIBOLOGIA 2018 Plate Springs Preloading Tapered Roller Bearings Wind Turbine Gearbox PDF p.6 · mechanism(internal source; excerpt not public)
- TRIBOLOGIA 2018 Plate Springs Preloading Tapered Roller Bearings Wind Turbine Gearbox PDF p.2 · numeric(internal source; excerpt not public)
- TRIBOLOGIA 2018 Plate Springs Preloading Tapered Roller Bearings Wind Turbine Gearbox PDF p.4 · numeric(internal source; excerpt not public)
- TRIBOLOGIA 2018 Plate Springs Preloading Tapered Roller Bearings Wind Turbine Gearbox PDF p.5 · numeric(internal source; excerpt not public)
- 164 SPIROL How Deflection Range Affects the Performance of Disc Springs 白皮 PDF p.1 · numeric(internal source; excerpt not public)
- 174 2018 WES Pitch Bearing Friction Torque Models pdf PDF p.2 · numeric(internal source; excerpt not public)
- 2018 WES Pitch Bearing Friction Torque Models PDF p.2 · numeric(internal source; excerpt not public)
- 243 US20070211976A1 Locating Bearing Assembly for Wind Turbine Gearbox Sha PDF p.7 · numeric(internal source; excerpt not public)
- EP2665942B1 IMO Rotor Bearing Wind Turbine Disc Spring Preload PDF p.8 · numeric(internal source; excerpt not public)
Cases illustrate decisions and do not constitute a specification promise for any other operating condition.
ENGINEERING REVIEW