What Do 778322, 2017608, and 3633643 Mean?
If you’ve come across 778322, 2017608, or 3633643 on a CF-A flexible rubber coupling, you might assume these numbers indicate a specific coupling size. However, these are series numbers, not size indicators.
Many customers make the mistake of trying to identify their coupling size based only on these numbers, which can result in ordering the wrong part.
To accurately identify the correct coupling, you need to check additional information on the rubber surface, including:
✔ Size marking (e.g., Size 12, Size 30, etc.)
✔ Hardness marking (e.g., 60 Shore)
✔ Hole type (Step Holes or Straight Holes)
CF-A Flexible Rubber Coupling Size Range
The CF-A series includes a wide range of sizes, such as:
🔹 Size 1, Size 2, Size 4, Size 8, Size 12, Size 16, Size 22, Size 25, Size 28, Size 30, Size 50, Size 80, Size 90, Size 140, Size 200, Size 250, Size 400, Size 600, etc.
For example, here’s a specific size from the series:
📌 Size 12 – 778322 2017608 3633643 PAT Flexible Rubber Coupling
Since the series includes multiple sizes, never confirm your coupling size based on the series number alone. Always double-check the size and hardness markings on the coupling before purchasing.
Understanding Rubber Hardness – Why It Matters?
The hardness of a flexible rubber coupling is measured in Shore A hardness. The most commonly used hardness for CF-A series couplings is:
✔ 60 Shore A (Widely used in most industrial applications)
Flexible rubber couplings with 60 Shore hardness are used in:
🚜 Excavators
🚢 Marine engines
🔧 Air compressors
🏗️ Construction machinery (Bulldozers, Loaders, etc.)
🌾 Agricultural machinery
Other hardness levels are also available for special applications. If you’re unsure which hardness is right for your equipment, feel free to contact us for guidance.
Step Holes vs. Straight Holes – Choosing the Right Coupling Type
The CF-A coupling series comes with two types of holes:
🔹 Step Holes
🔹 Straight Holes
If you’re unsure which type of holes your coupling requires, we offer:
📌 An Illustration for A/AS Coupling Hole Types – Check it out here: [Illustration about A/AS Coupling Hole Types (Replacement for Centaflex CF-A Series)]
📌 A Video of Size 4 Coupling with Step Holes – Watch the video to see how step holes look.
If you’re still not sure about the hole type, contact our team, and we’ll help you confirm the correct type for your coupling.
Why Choose YNF Rubber for Your CF-A Flexible Coupling Replacements?
At Y&F Rubber, we offer high-quality replacements for Centaflex CF-A flexible rubber couplings at a competitive price.
✔ Premium Quality: Made from high-performance rubber for excellent durability.
✔ Perfect Fit: Direct replacements for OEM Centaflex CF-A couplings.
✔ Wide Size Availability: Covering all standard CF-A sizes.
✔ Affordable Alternative: High performance at a lower cost than OEM parts.
✔ Fast Delivery & Customization: Need a custom size or hardness? We provide custom manufacturing services!
Order Your CF-A Flexible Rubber Coupling Today!
Avoid costly mistakes—always confirm your coupling size, hardness, and hole type before ordering. If you need assistance, our team is here to help!
📩 Email: sales@ynfrubber.com
🌐 Website: www.ynfrubber.com
💡 Reliable. Cost-Effective. Engineered for Excellence. Choose YNF Rubber for your CF-A coupling replacements! 🚜⚙️
