208-70-86840 BUSHING

The 208-70-86840 BUSHING KOMATSU is a high-performance flanged bushing designed for critical wear areas in Komatsu hydraulic excavators. Featuring an advanced internal spiral lubrication groove, this bushing is engineered to support heavy axial and radial loads while ensuring even grease distribution and smooth rotational movement.

Developed for demanding construction and mining applications, this component helps maintain machine alignment, reduces friction, and extends the service life of structural pins and housings. It’s the reliable solution you need to keep your Komatsu machinery operating with precision.

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Technical Specifications

• Part Number: 208-70-86840

• Product Name: Bushing, Flanged Type

• Material: Heat-treated alloy steel

• Surface Finish: Machined, corrosion-resistant

• Internal Design: Spiral lubrication grooves

• Outer Design: Cylindrical body with integrated flange

• Mounting Type: Press-fit installation

• Primary Application: Boom, arm, and swing frame joints

• Compatibility: Select Komatsu excavators

• Supplier: OEM-grade quality from 3GEN Export

• Shipping Time: Global delivery in 5 working days

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Detailed Description

The 208-70-86840 BUSHING KOMATSU is engineered to reduce wear and promote extended operation in some of the most demanding pivot locations on Komatsu excavators. Its unique internal architecture features precisely machined spiral lubrication channels that allow for efficient grease flow under high-pressure conditions. This ensures that the bushing remains lubricated throughout its life cycle, drastically reducing internal heat and friction.

The bushing is manufactured from high-grade alloy steel, then subjected to controlled heat treatment to harden the surface while maintaining a resilient core. This allows it to handle dynamic loads, shocks, and environmental hazards without cracking or deforming.

The flanged design offers axial load support and secure seating inside the housing, while the internal grooves reduce grease channel blockage—a common failure point in standard bushings.

Use this bushing in:

• Arm-to-boom connections

• Bucket link assemblies

• Swing mechanism pivots

• Track frame articulation points

Each 208-70-86840 BUSHING KOMATSU is precision-machined for tight clearances, ensuring reduced vibration and enhanced pin alignment. This leads to better overall control, less structural stress, and longer component life.

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Key Features

• Internal Spiral Grooves: Enhance lubrication flow and reduce operational friction.

• OEM-Level Tolerances: Ensures tight fit and superior alignment in Komatsu pivot housings.

• Flanged Design: Provides axial load retention and prevents displacement.

• Corrosion Protection: Withstands harsh field conditions including water, mud, and debris.

• Extended Service Life: Reduces maintenance intervals and replacement frequency.

• Minimal Play: Ensures pin alignment and smooth mechanical articulation.

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Compatible KOMATSU Models

The 208-70-86840 BUSHING KOMATSU is commonly used in Komatsu’s mid-to-large hydraulic excavator models. It supports critical movement points, helping protect the pins and housings that allow your machine to dig, swing, and lift with accuracy.

Compatible models include:

• Komatsu PC300-8

• Komatsu PC350-8

• Komatsu PC360LC-10

• Komatsu PC390-11

• Komatsu PC400-8

• Komatsu PC450-8

For specific fitment based on your equipment’s serial number, the team at 3GEN Export is ready to assist in verifying compatibility before dispatch.

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Function and Role in Machinery

Bushings are essential to the structural mechanics of an excavator, absorbing stress from pivoting motion and ensuring smooth interaction between pins and arms. The 208-70-86840 is specifically designed to reduce wear on high-friction pivot points by channeling lubricant throughout the bushing interior via spiral grooves.

The result? Lower operating temperatures, reduced part fatigue, and more efficient load handling—especially under continuous, high-pressure excavation cycles.

Neglecting a worn bushing can lead to severe pin scoring, joint misalignment, and eventual failure. Investing in a high-precision replacement like the 208-70-86840 BUSHING KOMATSU ensures your machine remains reliable and operational in the field.

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Maintenance & Replacement Guidelines

Monitor bushing wear during routine service intervals. You may need to replace the 208-70-86840 if you notice:

• Free play in joints or linkages

• Loud knocking or clunking sounds

• Pin surface wear or grooving

• Vibration during swing or digging operations

This bushing can be quickly replaced using standard press-fit tools, minimizing downtime and maximizing operational efficiency.

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Why Choose 3GEN Export?

3GEN Export is a trusted OEM-grade supplier of heavy machinery spare parts for Komatsu and other leading brands. When you order from us, you get more than a part—you get reliability, precision, and fast global delivery.

Why our clients choose 3GEN Export:

• Fast international shipping within 5 business days

• Bulk and individual order handling

• Expert part verification and technical support

• Competitive OEM pricing without compromise on quality

• Trusted by construction and mining operations worldwide

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Conclusion

The 208-70-86840 BUSHING KOMATSU offers a sophisticated solution to one of the most mechanically critical areas of Komatsu excavators. Its advanced design ensures optimal lubrication, structural integrity, and resistance to the extreme wear typical of heavy-duty applications.

Protect your investment and extend your machine’s service life with 3GEN Export’s reliable OEM-standard solutions—delivered wherever you are in just 5 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.