High-Performance Clutch Couplings for Earthmoving Equipment
At YNF Rubber, we specialize in manufacturing high-quality flexible rubber (elastomer) couplings designed for CASE excavators and other earthmoving machinery. Our hydraulic pump engine drive couplings provide superior shock absorption, vibration damping, and torque transmission, ensuring reliable performance in heavy-duty applications.
These couplings are designed to:
✔ Reduce vibration and noise for smoother operation
✔ Enhance power transmission efficiency between the engine and hydraulic pump
✔ Compensate for misalignment and minimize mechanical stress
✔ Extend the lifespan of critical components by absorbing shocks
Compatible Part Numbers
We offer a wide range of CASE excavator couplings that match OEM part numbers, ensuring a perfect fit and reliable performance.
📌 Available part numbers include:
4550919 / KRJ10340 / KMJ2660 / KRJ6622 / KAJ5015 / H8646259 / P6546257 / KSJ2874 / PY30P01003F1 / P1241421 / 1481179 / 6006153M1 / KNJ2558 / 47043053/A / 150612A1 / 47043053/ASSY / 159819A1/ASSY / KAJ21340 / 6005483M91 / KNJ19710-F/S / KNJ19710-ASSY / 159819A1/HUB / KSJ2875 / 159819A1 / KNJ2558/ASSY / 47043053/A-sea / 47045245 / KSJ12610 / KTJ2234 / KSJ2666 / KSJ2875
If you don’t see the part number you need, contact us—we can manufacture custom couplings based on your specifications.


YNF Rubber – Your Trusted Partner for Flexible Couplings
We offer a comprehensive range of couplings for CASE excavators and other construction machinery, including:
🔹 Flexible Couplings – High-elasticity rubber couplings for optimal vibration reduction
🔹 Hydraulic Pump Couplings – Designed for seamless connection between the hydraulic pump and engine
🔹 Engine Couplings – Precision-engineered for power transmission efficiency
🔹 Elastic & Rigid Couplings – Custom options available for different applications
🔹 Clutch Couplings – High-performance options for smooth torque transfer
🔹 Hose Couplings & Joints – Heavy-duty solutions for hydraulic systems
Custom Manufacturing & OEM Services
At YNF Rubber, we understand that every machine has unique requirements. If you require a custom coupling, we offer:
✔ Manufacturing based on samples or drawings
✔ High-precision production with quality rubber materials
✔ OEM solutions tailored to your exact needs
Our couplings are made from premium-grade elastomers, ensuring exceptional durability, flexibility, and resistance to wear, oil, and extreme working conditions.
Why Choose YNF Rubber?
✅ Leading Manufacturer – Decades of expertise in rubber engineering
✅ High-Quality Materials – Superior resistance to wear, oil, and extreme conditions
✅ OEM & Custom Solutions – Tailored manufacturing for unique machinery needs
✅ Fast & Reliable Delivery – Global shipping for uninterrupted operations
✅ Competitive Pricing – High performance at cost-effective rates
Contact Us for Your CASE Excavator Coupling Needs!
📩 Email: sales@ynfrubber.com
📲 WhatsApp: +86 189 2425 0310
If you need a flexible hydraulic pump or engine coupling for CASE excavators, YNF Rubber has the perfect solution for you!