Centaflex A by SIZE
Centaflex A by TYPE
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Centaflex A Size 250 – High-Torque Coupling for Wind Turbines, Generators, and Heavy Industrial Drives
The Centaflex A Size 250 is a torsionally soft, high-performance coupling element designed for heavy-duty applications where precision, damping, and long service life are essential. With a torque capacity of up to 3.0 kNm (nominal) and 8.75 kNm (peak), this size is widely used in wind turbine drivelines, especially in VESTAS turbine platforms, as well as in large-scale generator sets and industrial power units.
Whether you're maintaining renewable energy systems or large rotating machinery, CF-A-250 provides exceptional vibration isolation and long-term operational stability.
⚡ A Trusted Solution in Wind Turbine Drivelines
Centaflex A Size 250 rubber elements are commonly installed in:
- VESTAS wind turbines (various models)
- Nacelle-mounted drivetrains
- Low-speed shafts and gearboxes
- Wind turbine shaft coupling applications
- Generator-side flexible connections
These elements help compensate for angular misalignment, resonance, and torsional shock that can otherwise damage expensive driveline components in wind power systems.
🌬️ Looking for a wind turbine coupling replacement? Size 250 is one of the most frequently used in the industry, available in both Shore 50 and 60.
⚙️ Technical Specifications – CF-A-250 Overview
| Parameter | Value |
|---|---|
| Nominal Torque (TKN) | 3.0 kNm |
| Maximum Torque (TKmax) | 8.75 kNm |
| Continuous Vibratory Torque | 1.25 kNm |
| Max Speed | 3000 rpm |
| Temperature Range (NR) | –45 °C to +80 °C |
| Shore Options | 50 / 60 Shore A |
| Available Types | Type 0 / Type 0–S |
🧩 Type 0 and Type 0–S Mounting Options
| Type | Description | Application Fit |
|---|---|---|
| Type 0 | Standard axial-radial bolted fit | For static driveline layouts |
| Type 0–S | Includes pins for axial float | For flexible or shifting shafts, common in wind power applications |
Why Shore Hardness Must Match
Wind turbine drivetrains are often tuned through TVA analysis at the OEM level. Replacing a coupling element with the wrong Shore hardness (e.g., switching from 50 to 60) may:
- Introduce unwanted resonance
- Increase stress on gearbox bearings
- Lead to faster failure of surrounding components
📌 Always match the original Shore hardness as selected by Vestas or the turbine OEM. Learn more: 🔗 Understanding Shore Hardness in Centaflex A Couplings
Signs of OEM Quality vs. Aftermarket Risks
Genuine CENTA elements are used in most factory installations and show:
- Centaflex branding molded into the rubber
- Production date and patent numbers (D.B.P. – 2019608 / JAP.Pat. – 778322)
- OEM-grade silicone or rubber compounds tested in real-world field conditions
🛑 Aftermarket copies may use generic materials and cause shaft imbalance or premature stiffness.
📦 OEM Stock, Fast Global Shipping
All Centaflex A Size 250 elements sold at AWELASTIC.com are new, OEM-certified, and in stock. We supply spare elements for:
- Wind turbine service contracts
- Vestas repowering projects
- Industrial gensets
- Marine propulsion and offshore power units
🛠 Express shipping available worldwide with B2B support.
🧩 Available Variants
- 🔗 CF-A-250-0-50 – Type 0, 50 Shore
- 🔗 CF-A-250-0-60 – Type 0, 60 Shore
- 🔗 CF-A-250-0-S-50 – Type 0–S, 50 Shore
- 🔗 CF-A-250-0-S-60 – Type 0–S, 60 Shore
📩 Not sure which version fits your wind turbine or shaft drive?
Send us a photo, drawing, or label—we’ll confirm and deliver the exact OEM part.
