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Chongqing Cummins QSK19 Crankshaft

Name: Chongqing Cummins QSK19 Crankshaft
Brand: Komotashi
SKU: 00209
Rating: 4.8 (1 reviews)

Demo Crankshaft Assembly (Chongqing Cummins QSK19 Engine)

✓ Product: Crankshaft Assembly
✓ For Chongqing Cummins QSK19 Inline 6-Cylinder Electronic Control Diesel Engine
✓ Widely used for mining haul trucks, large excavators, marine propulsion engines, heavy-duty generator sets, oilfield machinery engine overhaul

Cummins QSK19 crankshaft assembly is the core power transmission component of QSK19 electronically controlled heavy-duty diesel engine. It converts reciprocating thrust of pistons into continuous rotational torque. Adopting high-strength alloy forged steel blank and integrated balance structure, with journal surface reinforcement treatment. It can sustain long-period alternating impact load, high temperature and high pressure under ultra-heavy load working conditions. It is a critical replacement spare part for overhauling mining equipment, marine power units, industrial generator sets and oil field machinery.

Overview

Product Details

The QSK19 crankshaft assembly is a heavy-duty power transmission component specially designed for CCEC QSK19 Quantum series electronically controlled engine platform. Widely equipped on large mining machinery, marine main propulsion engines, prime power generator sets and oilfield equipment. It delivers stable power transmission performance, outstanding fatigue resistance and extended service life, meeting fleet demands for low downtime and reliable continuous heavy-load operation.

Manufactured strictly according to OEM drawing dimensional standards, adopting mature integral forging technology and multi-process precision machining. All main journals and connecting rod journals are ultra-precisely machined to guarantee perfect fit with bearing shells, connecting rods, vibration dampers and flywheel assemblies. Every finished crankshaft undergoes strict magnetic particle crack detection, hardness inspection and high-precision dynamic balance calibration before delivery. Standard-size complete crankshaft assemblies are available for supply.Common OE Part No.: 4910530, 4917120, 3347569

Product Advantages

High-Strength Forged Steel & Excellent Structural Durability

Premium alloy forged steel blank, excellent bending resistance and anti-fatigue crack performance, adaptable to long-hour ultra-heavy load, frequent impact working scenarios such as open-pit mines and ocean-going vessels
Optimized crank throw and integral counterweight layout, reasonably distributed alternating stress, effectively lowering permanent deformation risk under sustained high-power operation
Induction quenching treatment on main journals, rod journals and transition fillets, significantly improving surface wear resistance and anti-cracking capability

Precision OEM Standard Machining

Fully machined following original factory tolerance standards. Stable journal diameter, straightness and runout tolerance, supporting direct bolt-on assembly without secondary modification
Superfine journal surface processing facilitates uniform lubricating oil film formation, effectively preventing bearing burning and shaft locking failures
High-standard dynamic balance calibration reduces engine overall vibration, minimizing additional abrasion of engine auxiliary components

Wide Matching & Stable Flexible Supply

Exclusively compatible with Chongqing Cummins QSK19 electronically controlled diesel engines, extensively installed on mining haul trucks, marine engines, generator sets, drilling & oilfield machinery
Mature aftermarket heavy-duty electronic engine spare part, sufficient inventory and fast delivery
Supply options: complete assembled crankshaft, bare crankshaft; bulk order customization supported

Technical Specifications

Part Name	Applicable Engine	Material	Matching Equipment
Crankshaft Assembly	Chongqing Cummins QSK19	Alloy Forged Steel	Mining Haul Trucks, Marine Propulsion Engines, Heavy-Duty Generator Sets, Oilfield Machinery, Large Construction Machinery