Centaflex A by SIZE
Centaflex A by TYPE
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Centaflex A Size 90 – Reliable Coupling for Railway Powerpacks, Industrial Drives, and Gensets
The Centaflex A Size 90 is a highly robust and versatile elastic coupling designed for medium-duty industrial and mobile applications. Its torsionally soft construction ensures vibration damping, precise torque transfer, and misalignment compensation—all critical features in demanding environments such as railway machinery, diesel generators, and stationary pumps.
Notably, silicone versions of CF-A-90 are widely used in powerpacks for railway maintenance and track construction vehicles, where electrical insulation and thermal performance are essential.
A Trusted Choice in Railway Powerpacks
Railway service machines require low-vibration, high-reliability couplings that can perform in compact enclosures, under fluctuating thermal loads. The Centaflex A Size 90 with silicone is a preferred solution across Europe for:
- Powerpack drive systems
- Hydrostatic transmissions
- Compact diesel-electric auxiliary units
- Battery-diesel hybrid equipment
Its high thermal resistance (up to +120 °C) and insulation properties make the silicone CF-A-90 ideal for enclosed rail-mounted applications.
⚙️ Technical Overview – Size 90
| Parameter | Value |
|---|---|
| Nominal Torque (TKN) | 1.1 kNm |
| Maximum Torque (TKmax) | 3.15 kNm |
| Continuous Vibratory Torque | 0.45 kNm |
| Max Speed | 3600 rpm |
| Temperature Range (NR) | –45 °C to +80 °C |
| Temperature Range (Silicone) | –45 °C to +120 °C |
| Available Types | Type 0 and Type 0–S |
| Shore Options | 50 and 60 |
| ATEX Certified | Yes |
🔧 Applications Beyond Rail
- Diesel engine–driven pumps
- Standby generators and light mobile gensets
- Industrial hydraulic systems
- Marine auxiliary drives
- Agricultural and forestry machines
🔄 Type 0 vs. Type 0–S – Mounting Comparison
| Type | Design | Ideal Use |
|---|---|---|
| Type 0 | Axial and radial bolting | Standard engine-to-shaft configurations |
| Type 0–S | Includes pins for axial movement | Systems needing easier maintenance or thermal float |
Shore Hardness: Why You Must Match the Original
Centaflex A couplings are not generic rubber parts. Each Shore hardness—50 or 60—has a very specific dynamic behavior, directly affecting torsional stiffness, resonance characteristics, and system lifespan.
Replacing a worn element with the wrong Shore hardness can lead to premature failure, noise, or torsional resonance.
Always match the original Shore value (usually marked on the coupling or machine documentation). These elements are often selected during OEM design together with TVA (Torsional Vibration Analysis) and machine-specific calculations.
Silicone elements are particularly recommended when elevated temperatures or electrical insulation is critical—especially in railway and hybrid systems.
📌 Clarification: D.B.P. – 2019608 and JAP.Pat. – 778322
If your old coupling is marked with D.B.P. – 2019608 or JAP.Pat. – 778322, please note that these are international patent numbers, not product codes. They confirm the component is a genuine CENTA original, but do not specify the exact model.
For precise identification, check:
- Element size and Shore rating
- Type code (0 or 0–S)
- A photo of your current setup
📖 More info here: D.B.P. 2019608 and JAP.Pat. 778322 on your Centaflex A coupling
📦 OEM Stock, Fast Worldwide Shipping
All Centaflex A Size 90 elements sold at AWELASTIC.com are 100% OEM-certified and NEW. We keep both natural rubber and silicone versions in stock—Type 0 and Type 0–S—ready for same-day dispatch and express international delivery.
🧩 Available Variants
- CF-A-090-0-50 – Type 0, 50 Shore
- CF-A-090-0-60 – Type 0, 60 Shore
- CF-A-090-0-S-50 – Type 0–S, 50 Shore
- CF-A-090-0-S-60 – Type 0–S, 60 Shore
- CF-A-090-0-50-SI – Type 0, 50 Shore Silicone
🛠 Need Help Identifying the Right Coupling?
📩 Just send us a photo, part code, or dimension sketch—we’ll quickly confirm the correct OEM part.