17A-71-21720 PLATE

The 17A-71-21720 PLATE KOMATSU is a precision-engineered half-moon lock plate designed for heavy-duty mechanical security within Komatsu machinery systems. Though compact in size, this component plays a vital role in maintaining the structural integrity and alignment of rotating or torque-bearing parts. Designed to handle the stresses of high-vibration environments, this lock plate is commonly found in the pivot points, articulation joints, and drive assemblies of Komatsu bulldozers and motor graders.

At 3GEN Export, we supply high-performance OEM-standard components like the 17A-71-21720 PLATE KOMATSU, delivered globally within 5 working days to keep your operations running at full efficiency.

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Technical Specifications

• Product Name: 17A-71-21720 PLATE KOMATSU

• Part Number: 17A-71-21720

• Material: High-strength carbon steel alloy

• Surface Finish: Machined face with anti-corrosive black oxide or phosphate coating

• Shape: Half-moon lock plate with precise arc and edge milling

• Drill Pattern: 4 equally spaced bolt holes for secure fitment

• Weight: Approx. 0.8–1.2 kg

• Thickness: Heavy-duty structural thickness for high load applications

• Function: Mechanical locking and fastening support

• Installation: Bolt-on—no welding or additional modification needed

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Detailed Description

The 17A-71-21720 PLATE KOMATSU is more than just a locking plate—it’s a foundational part that ensures mechanical alignment and operational safety in Komatsu heavy equipment. Specifically crafted to anchor critical shafts or components under dynamic movement, this plate provides the holding power needed to maintain part positioning under high pressure, torque, or external vibration.

Machined from a single piece of high-grade steel, the plate is resistant to warping, cracking, and corrosion, even in harsh outdoor or industrial environments. It features four strategically placed bolt holes to provide maximum clamping force while maintaining uniform pressure distribution across the mounting surface.

This plate is particularly useful in components where rotational forces are present—such as swing arm assemblies, undercarriage joints, or transmission pivot interfaces. By acting as a barrier against movement, it ensures that bolts and shafts stay in position, reducing the risk of mechanical failure or misalignment during operation.

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Key Features

• OEM-Standard Precision: Designed to meet the original specifications of Komatsu machinery.

• Durable Steel Composition: Made from hardened steel with anti-fatigue properties.

• Corrosion Resistance: Ideal for use in construction zones, mines, and marine-influenced environments.

• Fastening Stability: Prevents bolt loosening under extreme vibration and load conditions.

• Universal Fitment: Easy installation with four-bolt configuration.

• Maintenance Friendly: Can be quickly replaced during scheduled services or rebuilds.

• Heavy-Duty Profile: Optimized for high-stress points in mechanical assemblies.

• Global Shipping in 5 Days: Supplied directly from 3GEN Export with worldwide dispatch.

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Compatible KOMATSU Models

The 17A-71-21720 PLATE KOMATSU is used across several Komatsu bulldozer and grader series, particularly within drivetrain, swing, and structural linkage systems. Confirmed compatible models include:

• Komatsu D65EX-12 Dozers

• Komatsu D65PX and D65WX Series

• Komatsu D85ESS-2 Bulldozers

• Komatsu D155AX Series Heavy Dozers

• Komatsu GD655 Motor Graders

• Komatsu D60 and D75 Series (various builds)

If you’re performing maintenance or replacing components within shaft lock zones or pivot arms, the 17A-71-21720 PLATE KOMATSU is a must-have part to restore mechanical precision.

For exact compatibility based on serial numbers or model-year variations, we recommend checking your Komatsu parts catalog or consulting with 3GEN Export’s technical support.

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Role in KOMATSU Machinery Systems

Within Komatsu machines, the 17A-71-21720 PLATE KOMATSU serves a critical locking function. This plate:

• Secures Pivot Shafts: Holds shafts firmly in place to avoid rotation or axial movement.

• Prevents Bolt Back-Off: Essential in vibration-prone areas where standard bolts may loosen over time.

• Maintains Mechanical Alignment: Prevents misalignment in high-stress mechanical junctions.

• Improves Safety: Reduces the risk of component failure, especially in load-bearing systems.

• Enhances Longevity: Minimizes wear on adjacent components by holding them in position under dynamic loads.

Used in tandem with high-strength bolts and lock washers, this plate is a safeguard for maintaining assembly integrity under some of the most intense operating conditions in the construction and mining industries.

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Maintenance and Replacement Tips

While extremely durable, the 17A-71-21720 PLATE KOMATSU should still be checked during regular maintenance intervals. It’s typically replaced if:

• The bolt holes are ovalized or stripped

• Cracks or deformation are visible on the surface

• Corrosion has compromised the structure

• Bolt seating surfaces are worn or uneven

Replacement is simple: remove the mounting bolts, replace the plate, and re-tighten bolts to OEM torque specifications. Using a worn lock plate can risk misalignment, fastener failure, and downstream equipment damage.

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Why Source from 3GEN Export?

Choosing 3GEN Export means you’re choosing reliability, quality, and speed. We specialize in supplying OEM-standard parts like the 17A-71-21720 PLATE KOMATSU to keep Komatsu equipment operating at peak efficiency worldwide.

Here’s what sets us apart:

• Fast Global Delivery: Get your parts anywhere in the world within 5 working days.

• OEM-Quality Assurance: Manufactured to the specifications your machine was built with.

• Expert Assistance: Our support team helps confirm compatibility and fitment.

• Competitive Pricing: Premium quality without inflated costs.

• Bulk Availability: We support individual replacements and full machine rebuilds.

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Conclusion

The 17A-71-21720 PLATE KOMATSU is a crucial locking component that secures structural and mechanical systems within Komatsu machines. Designed for easy installation, high tensile strength, and corrosion resistance, this lock plate ensures that your machine continues to operate with the precision and reliability it was built for.

With fast shipping and OEM-quality backing from 3GEN Export, you’ll never have to compromise on performance or delivery speed.

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.