C5302096 XCMG GR2605 motor grader cylinder block

C5302096 (5302096) serves as a fundamental core component for Cummins ISB, ISDe, and QSB series engines. Acting as the engine’s “skeleton,” it integrates critical structural elements—including main bearing saddles, cylinder bores, camshaft bores, oil passages, and water jackets—and serves as the mounting platform for core components such as pistons, crankshafts, and camshafts. Precision-cast as a single unit from high-strength HT250 gray cast iron, and subsequently subjected to aging treatment to relieve internal stresses, the component exhibits exceptional rigidity, resistance to deformation, and wear resistance. Through precise control over the dimensional accuracy and positional tolerance of the cylinder and bearing bores, it ensures the harmonious, synchronized operation of all engine components. Designed to withstand severe operating conditions—including heavy loads, high temperatures, and high-frequency vibrations—it provides a stable and reliable foundation for power output.

Technical Specifications

– Part Number: C5302096 (5302096)
– Brand: Dongfeng Cummins (DCEC)
– Type: Engine Block (Cylinder Block)
– Material: HT250 High-Strength Gray Cast Iron (Hardness: 170–241 HBS)
– Compatible Engines: Cummins ISB6.7, ISDe4.5, ISDe6.7, QSB6.7
– Structure: Monolithic casting; integrates multiple main bearing saddles, cylinder bores, oil passages, and water passages.
– Key Precision: Cylinder bore φ102mm (Roundness ≤ 0.01mm); Main bearing bore φ76.2H7.
– Cooling: Features built-in, through-flow water passages that form a circulating cooling system in conjunction with the radiator and water pump.
– Lubrication: Integrates a main oil gallery to provide pressure lubrication for the crankshaft and camshaft.
– Installation: Aligned via locating pins; ensures precise fitment with the cylinder head, gear housing, and oil pan.
– Alternative Models: 3971016, 5309275, 5311270 (Universally interchangeable).
– Weight: Approx. 85 kg
– Surface Treatment: Anti-rust powder coating / Electrophoresis; Cylinder bores undergo honing treatment.

Application Scenarios

Primarily designed for Cummins electronically controlled engines installed in Dongfeng commercial vehicles and construction machinery; serves as the core foundation for engine power output:

– Dongfeng Models: Tianlong, Tianjin, Hercules (ISDe/ISB Series)
– Construction Machinery: 18–26-ton wheel loaders, motor graders, bulldozers, excavators (QSB6.7)
– Applicable Operating Conditions: Long-haul heavy transport, mining sites, high-altitude/extreme-cold environments, frequent start-stop cycles, continuous operation.
– Installation Position: The core component of the engine; connects to the cylinder head above, the oil pan below, and the gear housing at the rear.
– Core Functions: Supports all moving components, seals the cylinders, houses the oil and water passages, and ensures effective cooling and lubrication.