290D Excavator Coupling China High Quality Hydraulic Pump Parts Coupling


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Packaging & Delivery

More Parts Information:

1. 3038723 [1] Sleeve (SUB FOR TH108254)
2. 30M7026 [1] Plug 50 MM (SUB FOR TH100682)
3. 4063616 [1] Seal (SUB FOR TH100683)
4. 4228189 [1] Coupling (SUB FOR TH100684 ) (SUB FOR AT122329)
5. T108085 [8] Cap Screw M16 X 50
6. T22874 [5] Bolt 9.525 X 28.448 MM
7. 19H3239 [3] Cap Screw 3/8" X 1-1/4"
8. 12H304 [12] Lock Washer 3/8"
9. 4205128 [1] Cover (SUB FOR TH108255)
10. 19H1648 [4] Cap Screw 3/8" X 3/4"

Coupling Information:
1. It has high elasticity (low stiffness, high flexibility), the rotation angle is 10 degrees when bearing the nominal torque, and 25 degrees when the maximum torque is applied, which can reduce the natural vibration frequency of the shaft system and change the torsional vibration characteristics of the shaft system of the diesel engine power plant. , so that the diesel engine does not appear dangerous resonance speed within the required speed range. It can absorb and reduce the fluctuation of the output torque of the diesel engine. For the diesel engine power unit equipped with a reduction gear box, it can reduce the knock on the gear surface when the torque is fluctuating and prolong the service life of the gear.
2. It has good damping and vibration reduction characteristics, which can absorb part of the vibration energy, reduce the vibration amplitude when passing through the vibration point, and reduce the torsional vibration stress of the shaft section.
3. It can absorb and reduce the fluctuation of the output torque of the diesel engine. For the diesel engine power unit equipped with a reduction gear box, it can reduce the knock on the gear surface when the torque is changed, and prolong the service life of the gear.
4. It can compensate for axis deviation. It is not only highly elastic in torsion, but also elastic in axial, radial and angular directions. It is easier to center during installation and can compensate for errors caused by deformation of the hull and machine base after installation. , to ensure the normal operation of the diesel engine and shafting.
5. It can realize vibration reduction and isolation of solid sound and insulation current of the base. After the diesel engine is installed with a vibration damping base, relative vibration occurs between it and the shaft system. Only when an elastic ring coupling that is elastic in the axial, radial and angular directions is installed, the damper can be installed under the main engine. Vibrating the base, at the same time, it can isolate solid sound and reduce noise. Since the elastic ring coupling adopts natural rubber components, it has good insulation performance and can prevent axial current.

Guangzhou XIEBAGN MACHINERY CO., LIMTED

specialized in:
couplings, rubber mounts, gera parts, hydraulic seals and seal kits for hydraulic hammers, rock breakers, hydraulic excavators,wheel loaders, and JCB badkhoe loaders.

And, Our company also supply:
Engine parts, hydraulic piston pump and hydraulic travel motor, Swing motor assembly and hydraulic component parts, electric parts, etc. Hydraulic hammer breaker parts with piston, cylinder, chisel, through bolt, side bolt, top bush, front head bushing,accumlator, valve, etc.
We always try our best for all our customers and make it better and better. Welcome!

Your Trusted Excavator Parts Supplier – Manufacturer & One-Stop Sourcing Solution

Looking for a reliable supplier of excavator parts? Whether you need OEM services or a complete range of parts, we provide the best solutions for your business. As both a manufacturer and trading company, we combine factory-direct prices with the convenience of one-stop sourcing, ensuring that you get high-quality parts at competitive prices.

At YNF Machinery, we specialize in excavator rubber parts and a wide range of excavator components. Our extensive experience and commitment to quality make us a trusted partner for distributors, wholesalers, and repair shops worldwide.

Why Choose YNF Machinery?

We are not just another supplier—we are your long-term partner for excavator parts. Here’s why businesses worldwide choose us:

✅ Largest Excavator Rubber Parts Factory in Southern China

Our factory is the biggest excavator rubber parts manufacturer in southern China. This means:
✔ Lower production costs, allowing you to increase your profit margins
✔ Reliable and stable supply, ensuring you get the parts you need, when you need them
✔ Consistent quality control, reducing the risk of defective products

✅ Thousands of Products & Multiple Quality Levels

We offer a comprehensive range of excavator parts, covering various brands and models.
✔ Choose from thousands of product lines
✔ Select from different quality levels to suit your market demands
✔ Always find the right part, reducing time spent searching for suppliers

✅ Expanding Global Network – 16+ Agents in China & Growing

We have over 16 agents across China and are actively expanding our global presence.
✔ Looking for distributors and agents worldwide—let’s grow together!
✔ Support with marketing, logistics, and product knowledge
✔ Long-term partnership opportunities with exclusive benefits

✅ 30+ Years of Industry Expertise

With decades of experience, we understand the excavator parts market inside out.
✔ Established reputation for reliability and professionalism
✔ Knowledgeable team to help you find the right parts quickly
✔ Expertise in OEM manufacturing, making custom parts to your specifications

✅ OEM Services & Customization

Looking to develop your own brand or need custom parts? We’ve got you covered!
✔ Our own factory can manufacture parts based on your designs and specifications
✔ We provide custom branding options to help you build your business
✔ From rubber parts to metal components, we can customize everything you need

✅ Office & Showroom in Guangzhou – Convenient Logistics

Our Guangzhou office and showroom allow for easy business meetings and fast shipping.
✔ View and inspect products before ordering
✔ Quick access to major ports for efficient global shipping
✔ Dedicated customer support team to assist with orders and inquiries

What Excavator Parts Do We Offer?

We cover all major excavator brands, including Caterpillar, Komatsu, Hitachi, Volvo, Kobelco, Doosan, Hyundai, JCB, Kubota, and more. Our product range is designed to keep your machines running efficiently and reduce downtime.