6D140 Crankshaft 6261-31-1200 For Komatsu Excavator Diesel Engine Efi Forged Steel

Product Details

Product Overview

This high-performance 6D140 Crankshaft, identified by OEM part number 6261-31-1200, is a critical engine component engineered specifically for Komatsu excavators and heavy equipment. Manufactured from premium EFI forged steel, this crankshaft is designed to meet or exceed OEM specifications, ensuring reliable power delivery and long service life under the most demanding working conditions.

Compatible with the Komatsu 6D140 diesel engine, this crankshaft is commonly used in excavators, bulldozers, loaders, and other heavy machinery. As a direct replacement part, it offers a precise fit and restores engine performance to factory standards. Each unit undergoes rigorous quality control to guarantee dimensional accuracy and material integrity.

Key Features & Benefits

• Superior Material Strength: Constructed from high-grade EFI forged steel for exceptional durability and resistance to torsional fatigue.
• Precision Engineering: Machined to OEM specifications (6261-31-1200) for a perfect fit, ensuring proper journal alignment and oil clearance.
• Enhanced Performance: Restores engine balance and reduces vibration, leading to smoother operation and extended engine life.
• Rigorous Testing: Each crankshaft is inspected with machinery test reports and outgoing video inspection to confirm quality.
• Versatile Application: Suitable for a wide range of Komatsu equipment including excavators, loaders, bulldozers, trucks, and forklifts.
• Reliable Warranty: Backed by a 6-month warranty, providing peace of mind for your heavy equipment investment.
• Ready to Install: Packaged securely in plastic, box, and carton to prevent damage during transit.

Technical Specifications

OEM Cross-Reference

This crankshaft is a direct replacement for the following OEM part numbers:

• Komatsu Original: 6261-31-1200
• Alternative/OEM Equivalent: 6261311200

Always verify your engine model (6D140) and existing part number before ordering to ensure compatibility.

Compatibility

This crankshaft is commonly used for the following applications:

• Engine Models: Komatsu 6D140, 6D140-1, 6D140-2
• Vehicle Types: Komatsu excavators, bulldozers, wheel loaders, dump trucks, forklifts, and buses
• Typical Machine Series: Commonly found in Komatsu PC series excavators and D series dozers equipped with the 6D140 engine

Note: Fitment may vary by specific machine model and serial number. Please confirm your engine code before purchase.

Global Supply & Distribution

Based in Guangdong, China, maintains a robust global supply chain capable of shipping this 6D140 crankshaft to major industrial markets worldwide. We serve customers across:

• North America: Fast delivery to ports in Los Angeles, Houston, New York, and Vancouver
• Europe: Regular shipments to Rotterdam, Hamburg, Antwerp, and Felixstowe
• Asia-Pacific: Direct distribution to Singapore, Tokyo, Busan, and Sydney
• Middle East & Africa: Reliable logistics to Dubai, Jeddah, and Durban
• South America: Service to Santos, Buenos Aires, and Callao

With export experience and compliance with international trade standards, we ensure your order arrives on time and in perfect condition. Bulk orders and drop-shipping arrangements are welcome.

Quality Assurance

is committed to delivering high-quality engine components. Each 6D140 crankshaft is manufactured in ISO-certified facilities and undergoes strict quality control procedures:

• Material Certification: EFI forged steel meets international strength and hardness standards
• Dimensional Inspection: Precision measurement of all journals, throws, and keyways
• Testing Included: Machinery test report and video outgoing inspection provided with every unit
• Warranty: 6-month warranty against manufacturing defects

Our quality process ensures you receive a product that performs reliably in heavy-duty applications.

FAQ

Q1: How do I confirm this crankshaft fits my Komatsu engine?
Verify your engine model number is 6D140 (stamped on the engine block). Also check your existing crankshaft part number—if it is 6261-31-1200 or 6261311200, this is a direct replacement. For excavator models, common matches include PC200-6, PC200-7, and PC220-6 with the 6D140 engine.

Q2: What maintenance is recommended during installation?
Always replace main and rod bearings, thrust washers, and oil seals when installing a new crankshaft. Ensure proper lubrication during assembly and torque all main bearing caps to manufacturer specifications. Clean all oil passages thoroughly before installation.

Q3: Is this crankshaft balanced from the factory?
Yes, each 6D140 crankshaft is dynamically balanced to OEM specifications during manufacturing. However, for optimal performance in high-hour rebuilds, we recommend having the crankshaft re-balanced with your specific flywheel and damper assembly.