2387011210 , 238-70-11210 JOINT KOMATSU

High-Precision Joint Component for Komatsu Heavy Machinery

The 238-70-11210 JOINT KOMATSU is an essential structural part meticulously engineered for superior strength, stability, and alignment in Komatsu excavators and construction machines. As a crucial mechanical connector between major load-bearing assemblies, it ensures uniform force distribution, precise motion, and reduced wear under extreme working conditions.

Manufactured and distributed globally by 3GEN Export, this OEM-standard joint is designed to perform flawlessly in high-pressure hydraulic systems, pivot connections, and boom or arm linkages. Its precision-machined design guarantees exact fitment across multiple Komatsu models, offering seamless compatibility, enhanced durability, and long-term reliability in earthmoving, quarrying, and mining environments.

Every 238-70-11210 JOINT KOMATSU is produced under advanced CNC and metallurgical control systems to achieve the highest dimensional accuracy and mechanical strength demanded by Komatsu machinery.

Engineered for Durability and Alignment

The 238-70-11210 JOINT KOMATSU is not a simple mounting block—it is a core structural component responsible for maintaining the geometry and performance of critical assemblies in Komatsu machines. It ensures that moving parts remain perfectly aligned under dynamic forces, helping to maintain the operational precision of the boom, stick, or bucket system.

This joint is made from high-grade alloy steel, subjected to multiple heat treatment processes for exceptional hardness and tensile strength. The outer surfaces are anti-corrosion coated, while the machined internal cavity provides a mirror-polished fit for bushings or rotating pins. This dual-finish configuration ensures both strength and precision, offering stability even during high-frequency oscillation and impact operations.

Its yellow protective coating, characteristic of Komatsu components, further enhances oxidation resistance and surface endurance against mud, oil, and dust exposure.

Technical Specifications

Compatible Komatsu Models

The 238-70-11210 JOINT KOMATSU is compatible with a wide range of Komatsu excavators, ensuring smooth installation without modification. Its dimensional precision and material strength make it suitable for heavy-duty models commonly used in construction and mining sectors.

Compatible Komatsu Machines Include:

• Komatsu PC200-6 / PC200-7 / PC200-8

• Komatsu PC210-8 / PC210LC-10

• Komatsu PC220-7 / PC220-8 / PC220LC-10

• Komatsu PC300-7 / PC300-8 / PC300LC-10

• Komatsu PC350-8 / PC360LC-10

• Komatsu PC400-6 / PC400-7 / PC400-8

This part is primarily installed within the main boom or arm joint sections, ensuring stable alignment between bushings and pivot points.

Structural Role and Functionality

The 238-70-11210 JOINT KOMATSU functions as a mechanical bridge between load-bearing components. Its key purpose is to maintain correct positioning and distribute pressure evenly, ensuring that stress does not concentrate on a single point. This improves the overall fatigue resistance of the excavator structure.

Core Functional Benefits

• Load Distribution: Equalizes stress across the assembly, preventing cracks or deformation.

• Dimensional Accuracy: Maintains machine geometry for long-term operational precision.

• Smooth Operation: Reduces vibration and ensures consistent pivot movement.

• Corrosion Protection: Resists humidity, salt, and environmental contaminants.

• Extended Service Life: Designed for high-hour operation cycles in all terrains.

When properly installed, this joint enables smoother arm movement and improved hydraulic synchronization, enhancing the efficiency and responsiveness of the Komatsu excavator system.

Advanced Manufacturing Process

The 238-70-11210 JOINT KOMATSU is manufactured using automated CNC lathes and multi-axis milling systems, ensuring flawless machining and dimensional uniformity. Every part undergoes a multi-step inspection process, including ultrasonic testing, hardness verification, and coordinate measurement system analysis.

Production Steps Include:

1. Forging: Alloy steel billets are forged to achieve internal structural density.

2. CNC Machining: Precision cutting, drilling, and boring to achieve OEM geometry.

3. Heat Treatment: Hardening to improve tensile and compressive strength.

4. Surface Finishing: Grinding and polishing for exact bushing fit.

5. Protective Coating: Anti-rust and impact-resistant yellow industrial finish.

Each unit is traceable through batch serial codes, ensuring consistent quality across all 3GEN Export production lines.

Installation and Maintenance

The 238-70-11210 JOINT KOMATSU is designed for easy installation using standard Komatsu service tools and torque specifications.

Installation Steps

1. Clean the mounting surface and remove any corrosion or debris.

2. Align the joint with the corresponding bushing seat or frame mount.

3. Secure it using the correct grade of Komatsu fasteners and torque levels.

4. Inspect the seating alignment before tightening completely.

5. Re-lubricate adjacent pins and bushings to ensure smooth motion.

Maintenance Tips

• Inspect for play or looseness every 1000 operating hours.

• Reapply protective coating if surface exposure occurs.

• Grease pivot points regularly to prevent metal-to-metal friction.

• Replace when excessive wear, cracks, or corrosion signs are detected.

These preventive measures significantly extend machine uptime and lower the long-term maintenance costs of your Komatsu equipment.

Material and Surface Engineering

The 238-70-11210 JOINT KOMATSU exemplifies advanced metallurgical engineering. Its high-carbon alloy steel core offers high compressive strength, while the induction-hardened steel ring ensures minimal deformation under load. The contrast between the yellow outer coating and the polished metal ring is not aesthetic alone—it represents functional engineering that protects both inner and outer surfaces from distinct operational threats.

• The outer yellow frame resists impact and corrosion.

• The inner polished surface supports smooth bushing rotation.

• The hardened ring edge maintains dimensional integrity after thousands of motion cycles.

This combination makes the joint ideal for high-load applications such as boom base joints, arm connection points, and structural pivot interfaces.

Industrial Applications

The 238-70-11210 JOINT KOMATSU plays a critical role in stabilizing heavy machinery across different industries, including:

• Construction: In excavators and loaders for load pivoting and lifting stability.

• Mining: Ensures stress balance during repetitive heavy digging cycles.

• Forestry and Earthworks: Maintains joint precision under torsional stress.

• Infrastructure Projects: Provides reliable operation in road-building and tunneling tasks.

Regardless of terrain—muddy, rocky, or abrasive—this joint performs consistently, preventing misalignment and structural fatigue over long operational hours.

Why Choose 3GEN Export

As the Marketplace of Heavy Machinery Spare Parts, 3GEN Export stands as a trusted global OEM supplier of Komatsu-compatible components. Our parts meet the highest international standards, offering a perfect balance of precision, strength, and affordability.

3GEN Export guarantees:

• OEM-level quality assurance through multi-stage testing.

• Worldwide delivery within 5 working days.

• One-year manufacturer warranty for all parts.

• Secure packaging and traceable logistics.

• Expert technical support from a global engineering team.

By choosing the 238-70-11210 JOINT KOMATSU from 3GEN Export, you are investing in reliability, durability, and long-term operational performance—ensuring your Komatsu equipment performs at its full potential in every project.

Product Highlights

• Precision-machined from heat-treated alloy steel

• Resistant to corrosion, impact, and extreme weather conditions

• Compatible with a broad range of Komatsu excavator models

• High dimensional stability and load-carrying capacity

• Engineered for quick installation and minimal maintenance

• Supplied globally by 3GEN Export in just 5 working days

Product Summary

3GEN Export — Built for Global Performance

At 3GEN Export, our mission is to provide heavy machinery operators worldwide with high-quality, OEM-level components designed for precision, performance, and longevity.

The 238-70-11210 JOINT KOMATSU exemplifies this commitment. Engineered with advanced materials and strict quality control, it offers unmatched dependability for professionals who rely on Komatsu equipment every day.

Whether you manage a single excavator or an entire fleet, 3GEN Export ensures consistent part quality, fast delivery, and global customer support—so your machines never stay idle.

Manufactured in Turkey, these products are made using the latest technologies and built to meet the highest international standards. Each machine is a high-quality copy of the original, ensuring durability, precision, and performance that you can rely on for modern construction and metalworking projects.