Excavators Arm Bucket Parts Link Rod Wholesale fit Caterpillar E336
Heavy-duty link rod designed for Caterpillar E336 and compatible 36-ton excavators. Built from high-strength forged steel and CNC-machined to ensure perfect pin alignment and joint stability. With rust-resistant coating, it’s built for intense excavation, mining, and construction workloads.
| 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.
Key Function in the CAT E336 Link Rod
The link rod in the Caterpillar E336 excavator is a critical structural member within the bucket linkage system, responsible for transferring force between the bucket cylinder and the bucket arm. This component allows the hydraulic system to convert linear cylinder motion into accurate, controlled bucket articulation—enabling efficient digging, lifting, and dumping during continuous excavation cycles.
For a large excavator like the E336, commonly deployed in mining operations, road and bridge construction, deep foundation work, and quarry material handling, the link rod is subjected to substantial torsional stress, side loading, and shock impact from hard materials like rock, concrete, or dense clay. These conditions demand not only high structural strength but also precise bore alignment to maintain the integrity of the entire linkage system.
Forged Steel Body for Strength and Reliability
This link rod is forged from Q345B structural steel or equivalent high-yield alloy, selected for its ability to endure:
- Heavy, repeated impact forces
- Sudden directional changes under load
- Fatigue stresses from long working hours
Compared to cast components, forged steel offers superior internal grain structure, better shock resistance, and a lower risk of cracking or deformation under extreme conditions. This ensures the rod remains stable even during thousands of excavation cycles involving hard soil, boulders, or rebar-reinforced concrete.
High-Precision Machining & Corrosion Protection
To match OEM fitment standards, each E336 link rod is CNC-machined at critical contact areas:
- Pin bores for optimal alignment and tight fit
- Bushing seats to reduce stress concentration
- End faces for stable hydraulic articulation
Machining tolerance is kept very small., ensuring that the rod installs securely and maintains alignment throughout its service life.
To resist corrosion, two surface treatment options are available:
- Primer-paint finish (standard for inland or dry work sites)
- Electrophoretic coating (e-coating) for high-moisture or chemically aggressive conditions
These coatings protect the rod from oxidation, abrasion, and contaminant intrusion, helping maintain its structural integrity in harsh outdoor conditions.
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.
Compatible Models
This link rod is fully compatible with the following CAT models:
- CAT E336 / E336D / E336DL / E336FL / 336F / 336GC / 336D2
- Some 336E H hybrid models (verify linkage dimensions)
Not sure which part you need? Send us your casting number, machine serial, or dimensional drawing, and our engineers will confirm compatibility within 12 hours.
OEM Undercarriage Parts for Caterpillar Excavator
| BRAND | MACHINERY MODEL NUMBER | |||||||
|---|---|---|---|---|---|---|---|---|
| CATERPILLAR-CAT | CAT55 | CAT225 | CAT245 | CAT311 | CAT312 | CAT312B | CAT315 | CAT320 |
| CAT320B | CAT320C | CAT320D | CAT320L | CAT322 | CAT324 | CAT325 | CAT325B | |
| CAT325BL | CAT330 | CAT330B | CAT330BL | CAT330C | CAT330D | CAT345 | CAT345B | |
| CAT973 | E55 | E70 | E70B | E120 | E120-1 | E120B | E140 | |
| E200B | E200-5 | E215 | E240 | E300B | E300L | E311 | E312 | |
| E312B | E320 | E320BL | E320C | E320D | E320DL | E320L | E320S | |
| E322B | E322C | E324 | E324D | E324DL | E325 | E325B | E325L | |
| E329DL | E330 | E330B | E330C | E330D | E330DL | E345 | E345B | |
| E450 | CAT301.5 | CAT302.5 | CAT303.5 | CAT305 | CAT307 | CAT308 | CAT313 | |
| CAT316 | CAT318 | CAT320E | CAT320GC | CAT323 | CAT326 | CAT329 | CAT336 | |
| CAT340 | CAT349 | CAT350 | CAT365 | CAT374 | CAT375 | CAT385 | CAT385CL | |
| CAT390 | CAT390D | CAT390DL | CAT390FL | CAT395 | CAT6015 | CAT6015B | CAT6015D | |
| CAT6020 | CAT6020B | CAT6030 | CAT6030B | CAT6030D | CAT6040 | CAT6040B | ||
Looking for a specific make or model not listed here? Reach out and we’ll be happy to assist.
Real-World Use: Built for Harsh Work Conditions
The CAT E336 is used in some of the most demanding excavation environments, such as:
- Open-pit mining and quarry excavation
- Rock-breaking and demolition work
- Large-scale trenching for pipelines or foundations
- Heavy construction in coastal or chemically aggressive zones
In these scenarios, the link rod must stay dimensionally stable, corrosion-resistant, and tight-fitting even under shock loads and side stresses. Our link rods are tested to meet those demands, delivering long-term structural performance and minimal joint slack.
Quality Control & Export-Grade Packaging
Each E336 link rod passes a strict QA process that includes:
- 3D coordinate measuring (CMM) of all bore centers
- Ultrasonic flaw detection for internal steel soundness
- Fitment gauge testing with OEM-spec pins
- Surface finish and coating thickness checks
For shipping, all parts are treated with rust-inhibiting oil, wrapped in moisture-proof paper, cushioned with foam, and packed in palletized wooden crates designed for global logistics.
Maintenance Advice for Long-Term Use
- Grease pivot joints frequently (especially in dusty or wet jobsites)
- Replace bushings and pins along with the link rod to maintain optimal performance
- Check for elongated bores or play in the joint during scheduled maintenance
- Avoid high side-loads on the bucket to prevent premature distortion
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.
