crank shaft , Iran

The crankshaft is a key mechanical component in internal combustion engines that converts the piston’s linear motion into rotary motion of the output shaft. Crankshaft length ranges from 250 to 600 mm, with main journal diameters of 40–80 mm. It is made of alloy steel with heat treatment and surface hardening, providing tensile strength of 800–1200 MPa and surface hardness of 55–60 HRC. Torque capacity depends on the engine, ranging from 200 to 1000 Nm, with bearing surfaces machined to 0.01 mm precision to minimize friction and wear.

Structurally, the crankshaft includes main journals, crankpins, flywheel, and internal oil passages. Bearings and shafts with anti-wear bearings ensure smooth and uniform movement. Static and dynamic balancing keeps engine vibration under 5 mm/s. Flywheel and crankpin surfaces are chrome-plated and hardened, providing engine service life up to 150,000 km in light vehicles and 500,000 km in heavy-duty engines. Its precise design ensures smooth operation, high durability, and optimized power transmission.You can order and buy crank shaft from Iran by contacting us through whatsaap and email.
WEBSITE: crank shaft Iran