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What is an Engine Flywheel? An engine flywheel is a critical, often overlooked component mounted on the rear end of the engine’s crankshaft. It is a heavy, circular casting typically made of high-strength gray cast iron (such as HT200, HT250, HT300) or ductile iron (QT400, QT450, QT500).

Machined castings are mechanical parts refined by machining (such as turning, milling, drilling, grinding, etc.) after being formed by casting processes. They are core basic components in the equipment manufacturing industry, widely used in automotive, marine, power, railway, woodworking machinery a