6245-21-1100 Cylinder block assembly Komatsu bulldozer spare parts

6245-21-1100 Cylinder block assembly Komatsu bulldozer spare parts

The Komatsu 6245-21-1100 cylinder block assembly is a core component of Komatsu bulldozer engines. Manufactured strictly according to Komatsu’s original design, material, and manufacturing standards, it is suitable for harsh operating conditions involving high temperature, high pressure, heavy load, and continuous operation. As the mounting base for various engine systems, it undertakes key functions such as cylinder positioning, support for moving parts, cooling, and oil passages. It is a core assembly component ensuring engine power, sealing, and reliability.

The 6245-21-1100 cylinder block assembly is precision cast from high-strength alloy cast iron. After aging treatment, high-precision boring, honing, and finishing, it boasts excellent overall rigidity, high strength, and resistance to vibration and deformation, capable of withstanding combustion pressure and reciprocating loads over extended periods. The cylinder bore, main bearing bore, and positioning bore have high dimensional accuracy, meeting coaxiality and flatness standards. Cooling water and lubrication oil passages are unobstructed, and sealing surfaces are smooth, effectively ensuring stable operation of components such as cylinder liners, pistons, crankshafts, and bearings, preventing leaks of water, oil, or air.

The product undergoes rigorous pressure testing and dimensional inspection before leaving the factory, ensuring a high degree of compatibility with Komatsu original engine components. Suitable for harsh operating environments such as mining, earthmoving, and infrastructure construction, it significantly improves engine reliability, power, and lifespan, while reducing overhaul frequency and maintenance costs.

Core Technical Parameters

Product Model: 6245-21-1100
Product Name: Cylinder Block Assembly
Applicable Models: Komatsu series bulldozers
Material: High-strength alloy cast iron
Process: Precision casting, aging treatment, high-precision honing, boring
Characteristics: High strength, high rigidity, wear resistance, reliable sealing, unobstructed oil passages
Functions: Engine base, cylinder positioning, moving part support, cooling and lubrication channels

Core Advantages

High original factory standard precision, excellent matching; high strength and deformation resistance, more stable operation; excellent sealing performance, no oil or water leakage; strong adaptability to operating conditions, extending engine life.

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6261-41-9660 •• Valve
6261-41-9610 •• Spring
6204-41-4510 •• Seat
6204-41-4520 •• Cotter
6204-41-4541 •• Seal
6261-41-9530 • Case Assembly
6261-41-9540 •• Case
6553-51-2110 •• Bushing
6553-51-2820 •• Seat, T=50mm
6553-51-3110 •• Spool
6553-51-3511 •• Spring
708-21-12541 •• Plug
04020-00514 •• Pin, Dowel
6261-41-9640 •• Filter
6261-41-4960 • Cover
07000-E2025 • O-ring
07000-E2055 • O-ring
01435-00895 • Bolt
6261-41-9580 • Piston
6261-41-9620 • Spring
6261-41-9550 • Cover
07000-A2035 • O-ring
01435-00820 • Bolt
729-12-11001 • Sensor Assembly
729-12-11100 •• Sensor Assembly
729-12-11700 •• Core Assembly
729-12-11201 •• Core Assembly
729-11-11180 •• Plate
07001-02012 •• Ring, Back-up
6261-41-9590 • Solenoid Assembly
07000-A2016 • O-ring
6553-81-7110 • Bolt

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