crank shaft , Iran

The crankshaft is a mechanical component that converts piston linear motion into rotational motion, transferring combustion force to the shaft. Length for heavy-duty engines ranges from 400 to 800 mm, with main shaft diameter of 50–120 mm. It is made of alloy steel or hardened cast iron with surface hardness 50–60 HRC and tensile strength 600–800 MPa. Main bearing and piston connection surfaces are precision machined and finely finished. Integrated counterweights reduce engine vibration and distribute force evenly.

Crankshafts undergo heat treatments such as induction hardening or tempering to improve fatigue and wear resistance. Main bearings and connecting bushes with proper lubrication extend service life beyond 5000 hours. Oil grooves and internal channels reduce friction and operating temperature. This design ensures high power transmission efficiency and stable performance in heavy diesel and gasoline engines.You can order and buy crank shaft from Iran by contacting us through whatsaap and email.
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