23B2711351 , 23B-27-11351 PIN KOMATSU

Overview

The 23B-27-11351 PIN KOMATSU is a high-precision mechanical component engineered to provide robust connection and rotational alignment within Komatsu heavy machinery systems. Serving as a pivoting joint between structural assemblies such as booms, arms, and cylinders, this part ensures controlled movement and reliable stability during the toughest excavation and material-handling operations.

Manufactured with exacting OEM standards and finished through advanced metallurgical treatment, the 23B2711351 PIN KOMATSU is an essential element in maintaining mechanical integrity and minimizing wear in high-stress joints.

As an OEM-grade part supplied by 3GEN Export, it is designed for maximum durability, operational precision, and longevity. 3GEN Export delivers this part to clients around the globe within 5 working days, ensuring minimum downtime and maximum machine uptime.

Material and Construction

Precision Metallurgy

The 23B-27-11351 PIN KOMATSU is forged from high-tensile 42CrMo4 alloy steel (equivalent to AISI 4140), chosen for its strength, toughness, and resistance to fatigue. This alloy offers the perfect combination of elasticity and hardness, allowing it to absorb repetitive loads without deformation.

Material Composition and Properties:

• Base Material: 42CrMo4 hardened and tempered steel

• Heat Treatment: Induction hardened and stress-relieved

• Hardness: 56–60 HRC on the outer surface, 30–35 HRC at the core

• Surface Coating: Phosphate finish with anti-corrosive oil film

• Finish Tolerance: Ground and polished with Ra ≤ 0.4 μm

The heat treatment ensures that the 23B2711351 PIN KOMATSU withstands heavy impact forces while maintaining tight dimensional tolerances. The exterior layer provides exceptional wear resistance, while the core retains flexibility for impact absorption.

Dimensional and Mechanical Specifications

• Total Length: ≈ 310 mm

• Outer Diameter: ≈ 55 mm

• Bore Hole Diameter: ≈ 10–12 mm (for grease lubrication or securing bolts)

• Surface Hardness: 56–60 HRC

• Core Hardness: 30–35 HRC

• Roughness: ≤ 0.4 µm

• Weight: ≈ 8.44 kg

Every 23B-27-11351 PIN KOMATSU is CNC-machined and quality-checked for roundness, straightness, and dimensional precision, guaranteeing a snug, friction-minimized fit within the bushing or housing.

Mechanical Function and Application

The 23B-27-11351 PIN KOMATSU functions as a load-bearing pivot shaft that transmits movement between hydraulic cylinders and linked assemblies. It forms part of the mechanical articulation network within Komatsu excavators and dozers, where consistent motion, structural balance, and reliability are vital.

Key Mechanical Roles:

• Serves as the central axis for boom and arm pivot joints

• Transfers torque and mechanical stress between connected parts

• Reduces radial and axial play for smoother operation

• Protects bushing interiors by maintaining lubrication distribution

• Ensures even stress distribution under hydraulic force

The central lubrication hole design allows uniform grease flow, preventing metal-to-metal contact and prolonging both the pin and bushing life.

Design Advantages

• High Load Capacity: Designed to handle extreme shear and bending forces during digging and lifting.

• Wear Resistance: Induction-hardened exterior enhances service life even under abrasive conditions.

• Corrosion Protection: Phosphate-treated surface prevents rust and oxidation.

• Precision Fit: Machined to exact OEM tolerances to prevent play or misalignment.

• Smooth Rotation: Polished surface minimizes friction and vibration in joint movement.

• Easy Lubrication: Grease hole design ensures full lubrication coverage within assembly.

• Enhanced Safety: Reduces risk of linkage failure and uneven mechanical load transfer.

Technical Specifications

Compatibility with Komatsu Machinery

The 23B-27-11351 PIN KOMATSU is compatible with several Komatsu excavator and loader models where high structural rigidity and motion precision are required. It is used primarily in the pivot systems of booms, arms, and buckets.

Compatible Models Include:

• Excavators: PC200, PC210, PC220, PC240, PC270, PC300, PC350

• Bulldozers: D65, D85, D155 Series

• Wheel Loaders: WA320, WA380, WA470

• Motor Graders: GD511, GD555

• Backhoe Loaders: WB93, WB97 Series

Always verify the compatibility with your specific Komatsu model via its serial number or technical manual before installation.

Manufacturing Process

Each 23B2711351 PIN KOMATSU is the product of advanced machining and strict quality control, ensuring that every piece meets OEM-grade precision.

Step-by-Step Production Process

1. Steel Forging: 42CrMo4 billet is forged under controlled temperature to refine internal grain structure.

2. CNC Turning and Grinding: Automated lathes shape the pin to micrometer-level accuracy.

3. Induction Hardening: Surface is hardened to increase resistance to abrasion and load fatigue.

4. Tempering: The pin is uniformly heat-treated to balance toughness and hardness.

5. Thread and Hole Drilling: Grease ports and securing holes are precision-machined.

6. Polishing and Coating: Mirror finishing minimizes friction; phosphate coating prevents corrosion.

7. Inspection: Each part undergoes dimensional, hardness, and surface finish tests.

Quality Assurance and Testing

Before leaving the production facility, every 23B-27-11351 PIN KOMATSU undergoes an extensive inspection process.

Quality Tests Include:

• Dimensional Accuracy Check: Using coordinate measuring machines (CMM)

• Hardness Testing: Rockwell HRC scale verification

• Crack Detection: Magnetic particle inspection for micro-defects

• Surface Finish Validation: Profilometer scan for Ra ≤ 0.4 µm

• Load Testing: Static and dynamic load endurance simulation

3GEN Export ensures each pin meets both mechanical and metallurgical performance requirements expected of OEM-grade components.

Operational Benefits

1. Extended Service Life

Engineered for maximum wear resistance, this pin minimizes downtime by reducing the frequency of replacements.

2. Improved Energy Efficiency

Precision fit reduces hydraulic energy loss and vibration, improving operational smoothness and fuel economy.

3. Reduced Maintenance Costs

By protecting surrounding bushings and bearings, it lowers long-term repair expenses.

4. Enhanced Operator Comfort

Smooth articulation leads to less vibration transfer, resulting in stable machine control during operation.

5. Sustainable Performance

Its corrosion-resistant properties ensure reliable function in humid, dusty, and high-impact environments.

Installation and Maintenance Guidelines

Installation Steps:

• Clean the bore housing thoroughly before inserting the new pin.

• Apply high-pressure molybdenum-based grease evenly.

• Align the pin precisely with the mating bore.

• Insert retaining bolts or snap rings as specified in the service manual.

• Confirm that the component rotates freely with minimal play.

Maintenance Tips:

• Lubricate at regular intervals based on operation hours.

• Inspect visually for scoring, corrosion, or deformation.

• Replace the pin and its bushing as a matched set for optimal performance.

• Avoid high-pressure washing near pin joints without re-lubrication.

Environmental Resistance

The 23B-27-11351 PIN KOMATSU is specifically designed for harsh site environments such as mining pits, quarries, and construction zones.

Environmental Ratings:

• Corrosion Resistance: 72-hour salt spray certified

• Temperature Range: –40°C to +200°C

• Shock Resistance: 20 g vibration endurance

• Dust and Mud Tolerance: Fully sealed lubrication ports ensure protection

Whether your machine operates in freezing conditions or tropical climates, this pin guarantees stability, safety, and uninterrupted motion.

Applications Across Industries

The 23B2711351 PIN KOMATSU is a versatile component suitable for multiple Komatsu equipment types used in various industries:

• Construction: Excavators and loaders for infrastructure projects

• Mining: High-impact joint systems in drilling and excavation machinery

• Agriculture: Linkage systems in large-scale soil and earth-movers

• Forestry: Pivot mechanisms in log-handling or bulldozer attachments

• Demolition: Hydraulic arm joints in crushers and pulverizers

The pin’s durable design and universal fit make it a reliable choice for all heavy-duty industrial operations.

Advantages of Choosing 3GEN Export

When you purchase the 23B-27-11351 PIN KOMATSU from 3GEN Export, you’re not just buying a spare part—you’re investing in reliability, expertise, and global support.

Why Choose 3GEN Export:

• OEM-grade parts engineered for perfect fit and performance

• Worldwide shipping within 5 working days

• 1-year product warranty

• Rigorous quality testing on every batch

• Affordable pricing without compromising engineering standards

• 24/7 customer support for parts verification and installation guidance

3GEN Export is a trusted global name in supplying heavy machinery spare parts for Komatsu, Caterpillar, Volvo, Hitachi, and other major brands.

Economic Impact and Operational Value

Replacing worn pins such as the 23B-27-11351 PIN KOMATSU enhances both machine reliability and business profitability.

Economic Benefits:

• Lower downtime and increased daily production output

• Reduced long-term repair and maintenance costs

• Improved mechanical performance efficiency

• Preservation of hydraulic system accuracy and safety

Over time, the savings in operating costs far exceed the initial investment in quality replacement components.

Summary Table

Conclusion

The 23B-27-11351 PIN KOMATSU is a precision-engineered, high-strength mechanical component that ensures consistent motion, superior load handling, and long-term reliability for Komatsu heavy machinery. With its advanced heat treatment, corrosion protection, and tight geometric tolerances, it stands as a vital component for maintaining operational excellence in every application.

Supplied by 3GEN Export, the leading OEM-grade heavy machinery parts provider, the 23B2711351 PIN KOMATSUoffers proven durability and unmatched reliability — delivered worldwide in just five working days.

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.