Crankshaft

Product Introduction

The crankshaft is the core power shaft of a diesel engine, connecting the piston and connecting rod mechanism. It converts the reciprocating linear motion of the piston into rotational mechanical energy, outputting power outwards. Simultaneously, it drives auxiliary mechanisms such as the timing gear, oil pump, and fan, making it the central hub for engine power output.

Made of 45# steel or 40Cr alloy steel through integral forging, it undergoes multiple processes including tempering heat treatment, high-frequency quenching of the journals, precision grinding, and dynamic balancing. The main journals and connecting rod journals have high hardness, are wear-resistant and resistant to tensile damage; the crankshaft has high strength, is resistant to torsion and not easily broken; the oil passages are unobstructed and lubricate smoothly; the overall precision meets standards; it operates smoothly with low noise; it fully conforms to original factory specifications, has strong interchangeability, and is suitable for engine repair and replacement and complete machine assembly in various loaders.

Application Scenarios

• Construction Site Operations: Loaders frequently load materials and start/stop operations, requiring stable power output and resistance to deformation under alternating loads.
• Heavy-Duty Mining Conditions: Steep slope climbing, full-load operation, withstanding high torque impacts, fatigue-resistant and durable heavy-duty operation.
• Continuous operation in the material yard: Suitable for long-term, full-load operation around the clock; the journals are wear-resistant and durable, and not prone to bearing failure or wear.
• Engine overhaul: Suitable for replacing worn, bent, broken, or scored crankshafts in 3-ton to 7-ton loader engines.
• Harsh engine bay environment: Resistant to high temperatures, oil immersion, and high-frequency vibration, ensuring a long service life.