6252‑31‑1010 crankshaft ass'y is a heavy‑duty forged crankshaft assembly for Komatsu S6D125E and SAA6D125E‑2 diesel engines. Made of high‑strength forged alloy steel with heat‑treated hardened journals and strict dynamic balance testing, it converts piston reciprocating motion into rotational power output. It resists torsion, bending stress and cyclic fatigue loads under continuous heavy‑load operation, delivers stable power output for excavators and bulldozers, and extends engine overhaul service life.
High‑strength forged alloy steel, quenched and hardened crank journals, dynamically balanced, engineered for heavy‑duty construction and mining diesel engine working conditions
High‑strength forged alloy steel with quenched & hardened crank journals
Converts piston linear reciprocating motion into rotational power output
Resists heavy torsion, bending stress and cyclic fatigue under continuous heavy‑load cycles
Precision‑ground journal surfaces to reduce bearing friction and wear
Strict dynamic balance testing for stable and smooth engine operation
Factory‑inspected to meet Komatsu original dimensional and durability standards
Ready for professional overhaul installation, extends engine overhaul service interval
Compatible Machine
This crankshaft ass’y is compatible with:
Komatsu S6D125E Diesel Engine
Komatsu SAA6D125E‑2 Diesel Engine
If you’re unsure whether this crankshaft matches your machine, simply provide your machine serial number (PIN) or engine serial number, and our technical team will verify compatibility before shipment.
Applications
The 6252‑31‑1010 crankshaft assembly is the core power‑transfer component for Komatsu 6‑cylinder heavy‑duty diesel engines, widely deployed in harsh working environments:
Open‑pit mining excavator power units
Large‑scale earth‑moving bulldozer equipment
Quarry material loading and handling operations
Heavy‑duty wheel loader construction jobsites
24‑hour continuous operation of construction‑grade machinery
It bears huge cyclic mechanical loads for construction and mining equipment. Reliable structural performance helps prevent catastrophic engine failure and reduces costly unplanned downtime.
Why Choose YLCM?
YLCM specializes in supplying genuine Komatsu, OEM and premium aftermarket spare parts for construction and mining machinery worldwide. We provide:
Genuine Komatsu engine system spare parts
High‑quality aftermarket replacement components
Competitive factory‑direct pricing
Fast worldwide delivery options
Standard professional export‑grade packaging
Pre‑sales part verification and after‑sales technical support
Extensive export experience serving customers in Russia, Southeast Asia, the Middle East, Africa, and South America
In addition to crankshaft assemblies, we also supply hydraulic parts, undercarriage parts, engine components, electrical parts, filters, and a full range of Komatsu replacement parts.
Packaging & Shipping
Every 6252‑31‑1010 Crankshaft Ass’y is professionally packed to ensure safe international transportation. Packaging options include:
Anti‑rust oil coating & moisture‑proof protection
Heavy‑duty steel support frame
Export‑standard solid wooden crate
Sea freight
Railway transportation
Multimodal logistics solutions
Each crankshaft assembly is securely fixed inside the crate to prevent collision and deformation during transit, ensuring arrival in excellent condition.
Request a Quote
Looking for the 6252‑31‑1010 Crankshaft Ass’y for Komatsu S6D125E, SAA6D125E‑2? Contact YLCM today to receive:
Latest quotation
Delivery lead time
Packing details
Shipping solution
Technical support
OEM part verification
Our experienced sales team will respond promptly with a competitive quotation and professional service tailored to your project requirements.
Frequently Asked Questions
Q: Is this a genuine Komatsu part? A: We can supply both genuine Komatsu original and high‑quality aftermarket versions for 6252‑31‑1010, to meet diverse customer needs and budget requirements. Please contact us if you have a specific preference, and we will be happy to assist.
Q: How do I confirm this part is correct for my machine? A: To ensure perfect compatibility, please provide your engine serial number (E/S), machine serial number (S/N), or the original part number to our team. We will verify the match for you promptly.
Q: What is the warranty on this product? A: This product comes with a standard 6‑month warranty against manufacturing defects.
Q: What is the typical shipping time? A: This item is generally in stock. The final lead time will be confirmed when we provide your official quote, based on your destination and shipping method preference.
