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main components of Caterpillar engines

The main components of Caterpillar engines include the cylinder block, pistons, crankshaft, connecting rods, and cylinder head, made from high-quality alloy steel and aluminum to ensure high mechanical and thermal strength. Cylinder diameters typically range from 95 to 150 millimeters, piston strokes from 115 to 200 millimeters, and engine displacement ranges from 3 to 20 liters. The crankshaft undergoes heat treatment and precision balancing, supporting torque up to 1500 Nm, while forged steel connecting rods measure 150 to 350 millimeters in length.

The cylinder head contains intake and exhaust valves, seats, and water and oil channels, machined to surface tolerances below 0.01 millimeters. Internal lubrication system pressure ranges from 4 to 8 bar, and bearings withstand temperatures up to 120°C. All components undergo non-destructive testing NDT including ultrasonic and magnetic inspections to ensure engine service life exceeds 20,000 hours.
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