Cummins K19 Forged Steel Crankshaft

The K19 crankshaft is professionally developed for Cummins inline 6-cylinder K19 series heavy-duty diesel engines, fully compatible with K19, KTA19, QSK19 full-series engine models. It strictly follows Cummins original dimensional standards and manufacturing processes, with precise journal tolerance and optimized counterweight structure. It adapts to long-term high-load, high-torque and harsh working conditions such as mining, ocean shipping and emergency power generation, maintaining stable power output for a long time.

Made of high-quality SAE4140 alloy steel, the crankshaft adopts integral forging forming technology to eliminate internal structural defects. Through overall quenching and tempering treatment and journal high-frequency surface hardening, the surface hardness reaches HRC45-HRC50. The fillet rolling reinforcement process effectively disperses stress concentration, greatly improves fatigue resistance and wear resistance, and reduces engine vibration and failure rate under extreme working conditions.

Product Advantages

Heavy-Duty Forging & Extreme Durability

• Adopts premium SAE4140 alloy forged steel integral forming, with dense internal structure and strong overall toughness, which can withstand ultra-high explosive pressure and torque impact of large industrial engines, no deformation or fracture under long-term heavy load.
• Equipped with overall quenching and tempering heat treatment process, which eliminates internal stress, improves structural stability and greatly extends the service life under harsh working conditions.

Precision Hardening Process & Low Wear Loss

• Main journal and connecting rod journal adopt high-frequency quenching hardening treatment, with high surface hardness and excellent wear resistance, effectively reducing shaft friction loss and engine oil consumption.
• Professional fillet rolling reinforcement design disperses operating stress, improves anti-fatigue performance, and avoids common crankshaft fracture failure at fillet positions.
• High-precision dynamic balance calibration effectively reduces engine operating vibration and noise, ensuring stable and efficient operation of the power unit.

Original Standard & Wide Compatibility

• Fully compliant with Cummins original factory parameters, standard installation size and hole position, realizing direct plug-and-play replacement without modification, convenient for assembly and maintenance.
• Widely compatible with K19 full-series engines, applicable to mining trucks, excavators, drilling rigs, marine engines, fixed generator sets and other heavy equipment.
• Complete factory inspection procedures, stable product consistency, high matching accuracy, suitable for factory supporting assembly and aftermarket maintenance replacement.

Technical Specifications