Excavator Link Rod Manufacturer Parts fit Hitachi EX55
Durable, precision-machined link rod designed for Hitachi EX55 mini excavators. Forged from structural steel for strength and shock resistance, with CNC-machined pin holes and anti-corrosion coating. Supports smooth bucket movement and force stability during tight-space excavation.
| Colors | Black or yellow or customized |
|---|---|
| Surface Hardness | HRC52-58 |
| Material | Q235B, Q345B |
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Kinton Parts is trusted by professionals worldwide for delivering high-quality parts for excavators, bulldozers, and other construction machinery—with guaranteed performance and durability.
What the Link Rod Does in EX55 Mini Excavators
In compact excavators like the Hitachi EX55, the link rod serves as the essential connector between the bucket cylinder and the bucket linkage, ensuring synchronized movement during trenching, lifting, and grading. Despite its smaller size, the EX55 operates in environments with high maneuverability demands—urban worksites, residential digging, and tight foundation tasks—which place significant stress on its mechanical joints.
A worn or low-precision link rod can lead to inconsistent bucket motion, premature pin or bushing wear, and force imbalance in the front-end assembly. That’s why a reliable, OEM-grade link rod is crucial to keeping the machine accurate, responsive, and productive.
Material Strength and Structural Integrity
This EX55 link rod is forged using Q345B or Q235B steel, both recognized for their high tensile strength, good impact resistance, and excellent weldability. For heavier applications or longer durability requirements, Q345B is recommended due to its higher yield strength.
The forging process creates a compact internal structure that resists fatigue and deformation over time. This makes the part capable of withstanding frequent force reversals, side loading, and vibration—conditions common in mini-excavator applications where quick cycle times are expected.
After forging, the link rod undergoes CNC machining to ensure consistent bore diameter and precise fitment with the bucket and cylinder pins. Maintaining proper tolerance is essential in mini excavators, where even small misalignments can affect bucket control and cause uneven wear.
To protect the part from corrosion in muddy, wet, or chemical-prone job sites, each unit is shot-blasted and finished with either primer paint or electrophoretic coating (e-coat), ensuring long-term resistance against rust and surface damage.
Pre-Machining Storage
After forging and rough shaping, each link rod is properly stored in preparation for precision machining and heat treatment. These solid, semi-finished parts are neatly arranged in batches — showcasing both our forging strength and our ability to manage stable, large-scale production.
Export-Ready Packaging
After completing all machining, quality checks, and anti-corrosion treatment, each finished link rod is carefully packed using reinforced pallets or wooden crates. This ensures safe handling and long-distance transport. Every package is clearly labeled for easy tracking, and logo or barcode customization is available upon request.
Fitment
This link rod is compatible with:
Hitachi EX55 / EX55U / EX55-3 / EX55UR
Not sure about your part number or fitment? Just send us your casting code, serial number, or dimensional drawing, and we’ll verify compatibility within 12 hours.
OEM Undercarriage Parts for Hitachi Excavator
| BRAND | MACHINERY MODEL NUMBER | |||||||
|---|---|---|---|---|---|---|---|---|
| HITACHI-EX/ZAX/ZX | EX30 | EX40 | EX55 | EX60 | EX60-2 | EX60-3 | EX60-5 | EX70 |
| EX75 | EX100 | EX100-3 | EX100-5 | EX120 | EX120-1 | EX120-3 | EX120-5 | |
| EX130-1 | EX200-1 | EX200-2 | EX200-3 | EX200-5 | EX200LC-1 | EX200LC-2 | EX200LC-3 | |
| EX200LC-5 | EX220-3 | EX220-5 | EX270 | EX270-1 | EX270-2 | EX270-5 | EX270LC-1 | |
| EX270LC-2 | EX270LC-5 | EX300 | EX300-1 | EX300-2 | EX300-3 | EX300-5 | EX300A | |
| EX300LC-1 | EX300LC-2 | EX300LC-3 | EX300LC-5 | EX330 | EX370 | EX400-1 | EX400-2 | |
| EX400-3 | EX400-5 | EX400LC-1 | EX400LC-2 | EX400LC-3 | EX400LC-5 | EX450 | EX450-1 | |
| EX450-2 | EX450-3 | EX450-5 | EX450LC-1 | EX450LC-2 | EX450LC-3 | EX450LC-5 | UH07-7 | |
| ZAX30 | ZAX55 | ZAX200 | ZAX200-2 | ZAX330 | ZAX450-1 | ZAX450-3 | ZAX450-5 | |
| ZX30 | ZX33 | ZX38U | ZX40 | ZX55 | ZX60 | ZX70 | ZX75US | |
| ZX120 | ZX130 | ZX160LC | ZX200 | ZX210 | ZX240 | ZX270 | ZX330 | |
| ZX360 | ZX400 | ZX450 | ZX470 | ZX500 | ZX650 | ZX850 | ZX870 | |
Looking for a specific make or model not listed here? Reach out and we’ll be happy to assist.
Performance Under Real-World Conditions
The EX55 is designed to work in space-limited urban areas, narrow trenches, and residential construction, where maneuverability and operational accuracy are key. In these environments, the link rod needs to remain rigid, lightweight, and precisely aligned, even under fast cycle operation.
Our link rod maintains consistent geometry under repeated load cycles, ensuring bucket articulation stays smooth and predictable. It’s ideal for contractors, rental fleets, and municipalities seeking reliability in compact digging solutions.
Maintenance Tips to Extend Service Life
Even for compact machines, proper maintenance is key:
- Lubricate pin joints regularly to prevent metal-to-metal abrasion
- Inspect bore roundness and pin fit every 800–1,000 hours
- Replace pins and bushings together when installing a new link rod
- Avoid overloading or using the bucket as a pry bar to maintain rod integrity
SHIPPING & DELIVERY
At Kinton Parts, we ensure reliable, worldwide shipping of parts for excavators, bulldozers, and a full range of construction machines—safe, fast, and secure.
All products are securely packed using high-quality export cartons, reinforced wooden cases, or industry-standard palletized packaging to ensure maximum protection during transit and smooth handling during unloading.
Standard orders are typically shipped within 3–5 working days, while large or customized orders are usually dispatched within 7–20 days, depending on volume and production requirements.
We offer flexible global shipping options, including:
- International sea freight for cost-effective bulk transport
- Air freight for urgent orders
- Courier delivery (DHL, FedEx, UPS) for small-volume or sample shipments
Our logistics team manages every shipment carefully, providing real-time updates and tracking information until your order arrives safely at your destination.
Need assistance choosing the best shipping method for your location and timeline? Contact our team — we’ll help you plan a smooth delivery experience.
FAQ
Q: What are your main products?
A: We supply a full range of undercarriage and wear parts for excavators, bulldozers, and other heavy equipment. Our product line includes: Track rollers, carrier rollers, front idlers, sprockets, segments, track shoes, track chains, bolt and nuts, pins and bushings, bucket teeth and adaptors, filters, seal kits, swing bearing, and hydraulic cylinder—plus other essential replacement parts.
Q: Which countries do you export to?
A: Kinton Parts exports to over 60 countries worldwide, including:
USA, Canada, UK, Germany, Russia, UAE, Indonesia, Malaysia, Thailand, India, Pakistan, Bangladesh, Sri Lanka, South Africa, Colombia, Peru, and many others.
Q: Can I order a sample?
A: Yes, we accept trial orders. For parts in stock, samples can be shipped quickly. If you have technical drawings or existing samples, we also support customized production and mold development.
Q: How can I track my order after shipping?
A: Once your order is shipped, we will provide you with all necessary tracking information based on the shipping method. For express deliveries, you’ll receive a tracking number to follow the shipment online. For air or sea freight, we’ll send you the relevant documents such as the airway bill (AWB) or bill of lading (B/L), along with the packing list and commercial invoice to help with tracking and customs clearance.
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Trusted by professionals worldwide, Kinton Parts supplies premium-quality components for excavators, bulldozers, and more—with reliable quality you can count on.
