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Construction machinery engine parts include pistons, cylinders, crankshafts, bearings, and valves, all operating under high pressure and temperature conditions. These parts are typically manufactured from carbon steel alloys, gray cast iron, and forged aluminum to ensure high mechanical and thermal strength. Cylinder diameters in construction engines range from 95 to 120 millimeters, while piston strokes vary between 100 and 140 millimeters. The crankshaft surface hardness is around 60 HRC, and bearings can withstand pressures exceeding 5000 Newtons per square centimeter. The design of these components guarantees engine efficiency under heavy-duty operations.
Proper lubrication of construction machinery engine parts is achieved by an oil pump operating at 3 to 5 bar pressure, preventing wear and excessive heat. Operating temperatures of these engines usually range from 90 to 110 degrees Celsius, while valves are manufactured from heat-resistant steel capable of withstanding up to 750 degrees Celsius. Piston weights vary between 1.5 and 3 kilograms depending on engine size, and their surfaces are coated with tin or graphite to reduce friction. The estimated service life of construction engine components under standard conditions exceeds 8000 hours.
WEBSITE: Construction machinery engine parts Iran
