CENTAFLEX A Size 090
Centaflex coupling size 90A- 90AS| 2019608 | 778322
Centaflex A by SIZE
Centaflex A by TYPE
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Centaflex 90A coupling CF-A-090-0-50 | 2019608 | 778322
517.00€In stock
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Centaflex 90A coupling CF-A-090-0-60 | 2019608 | 778322
517.00€In stock
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Centaflex 90AS coupling CF-A-090-0-S-50 | 2019608 | 778322
542.00€In stock
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Centaflex 90AS coupling CF-A-090-0-S-60 | 2019608 | 778322
542.00€In stock
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Centaflex A coupling - Size 90A/90AS – Reliable Coupling for Railway Powerpacks, Industrial Drives, and Gensets| 2019608 | 778324
The CENTAFLEX A coupling Size 90 (also known as 90A coupling or 90AS coupling) is a torsionally soft, elastic element designed for medium-duty industrial, railway, and mobile machinery applications.
Engineered by CENTA , it provides vibration damping, torque transmission accuracy, and misalignment compensation — essential features in systems that demand reliability under variable load and temperature conditions.
With a nominal torque capacity of 1.1 kNm, the CF-A-90 offers robust performance for diesel-driven, hydraulic, and generator-based systems, combining flexibility, resilience, and OEM-certified precision.
A Proven Solution for Railway Powerpacks
In railway maintenance and track construction vehicles, the CENTAFLEX A Size 90 silicone version is a preferred OEM choice.
These units require low-vibration, electrically insulated couplings that can withstand confined-space heat buildup and constant operational stress.
These units require low-vibration, electrically insulated couplings that can withstand confined-space heat buildup and constant operational stress.
The CF-A-90 (Silicone) element offers:
- High thermal resistance (up to +120 °C)
- Electrical insulation for hybrid and auxiliary systems
- Stable torsional damping under fluctuating thermal loads
This makes it ideal for:
- Powerpack drive systems
- Hydrostatic transmissions
- Compact diesel-electric auxiliary units
- Battery-diesel hybrid systems
Technical Overview – 90A coupling / 90AS coupling:
| 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 and mobile generator sets
- Industrial hydraulic power units
- Marine auxiliary drives
- Agricultural and forestry machinery
- Construction and maintenance vehicles
🔄 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 – Match the Original Specification
The Shore hardness (50 or 60) determines its stiffness, damping, and resonance profile.
Selecting the wrong hardness can lead to vibration issues, noise, or early element failure.
Selecting the wrong hardness can lead to vibration issues, noise, or early element failure.
- 50 Shore A → Softer, more flexible, ideal for vibration-sensitive drives
- 60 Shore A → Stiffer, better torque handling for higher power or heat exposure
Silicone elements are recommended for railway and hybrid applications, where elevated temperature and electrical insulation are critical.
About D.B.P. – 2019608 and JAP.Pat. – 778322
If your coupling is stamped D.B.P. – 2019608 or JAP.Pat. – 778322, it is an authentic OEM CENTA coupling.
These numbers are international patent references, not model codes, and confirm that your part is original but do not define its size or hardness.
These numbers are international patent references, not model codes, and confirm that your part is original but do not define its size or hardness.
To identify your exact replacement, please provide:
- Coupling size and type (e.g. CF-A-090, 0 or 0–S)
- Shore hardness (50 or 60)
- Material (natural rubber or silicone)
- A photo or drawing of the existing element
📖 More info here: D.B.P. 2019608 and JAP.Pat. 778322 on your Centaflex A coupling
📦 OEM Stock from Germany – Fast Global Delivery
All CENTAFLEX coupling 90A or 90AS elements available at AWELASTIC.com are new, original OEM parts, manufactured in Germany by CENTA.
We keep both natural rubber and silicone versions in stock for same-day dispatch with express worldwide 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 Your Coupling?
If you’re unsure whether your system uses Type 0 or 0–S, rubber or silicone, or the correct Shore hardness, 📩 send us your part markings, photo, or machine data — our technical team will verify the exact OEM part number for you.
The CENTAFLEX A Size 90 (90A / 90AS) remains the preferred choice for railway, power generation, and mobile machinery, providing OEM precision, high reliability, and global availability from AWELASTIC.com.