Leading Crankshaft Manufacturers | Custom & Marine Solutions | Global Supply

I. What is the crankshaft?

A crankshaft is a precision-engineered mechanical component that converts reciprocating motion from engine pistons into rotational energy. As leading crankshaft manufacturers, we design these critical parts for optimal performance in automotive, marine, and industrial applications. Comprising a series of journals and counterweights, our crankshafts meet ISO 19902 standards for marine use and IATF 16949 for automotive systems.

II. What does a crankshaft do?

1. Transforms linear piston movement into rotational power

2. Supports connecting rod bearings under extreme pressure

3. Maintains engine balance through strategically placed counterweights
   Our custom crankshafts enhance torque delivery in ship engines crankshaft systems, reducing vibration by up to 30% compared to standard models.

III. Classification and materials of crankshaft castings?

• Ductile Iron (QT800-6/QT900-5): Cost-effective with high tensile strength

• Forged Steel: Ideal for heavy-duty applications requiring 200+ ksi yield strength
  Casting Types:

• Cast Crankshafts: Produced via iron mold coated sand casting for complex geometries

• Forged Crankshafts: Created through hot forging processes for superior fatigue resistance

IV. What are the 4 parts of the crankshaft?

1. Main Journals: Support the crankshaft in engine bearings

2. Connecting Rod Journals: Interface with piston connecting rods

3. Counterweights: Balance rotational forces during operation

4. Flywheel Flange: Transmits power to drivetrain components
   Our designs incorporate fillet rolling on journal edges, increasing fatigue life by 45%.

V. Factors Affecting Crankshaft Replacement Cost

• Material Type: Forged steel costs 30-50% more than cast iron

• Application Complexity: Marine crankshafts require additional corrosion protection

• Customization: Precision balancing for racing engines adds 20-30% to base cost

• Certifications: ISO 19902 compliance increases production costs by 15%

VI. What is the casting method of crankshaft?

1. Induction furnace melting with 99.8% purity control

2. Automated iron mold coated sand casting for ±0.1mm precision

3. In-line spectrometer analysis every 5 minutes during production

4. 100% ultrasonic testing for internal defects

VII. What is the difference between a camshaft and a crankshaft?

VIII. How is a crankshaft made?

1. Material Selection: Choose cast iron or forged steel based on application

2. Precision Machining: 5-axis CNC lathes achieve ±0.01mm tolerances

3. Heat Treatment: Induction quenching increases surface hardness to HRC 55

4. Surface Finishing: Electropolishing reduces friction coefficient by 18%

5. Dynamic Balancing: Computer-controlled balancing to G1.0 standards

   
   

IX. Choose Tiegu for Your Customized Car Parts

• Custom crankshafts for Minneapolis, MN, and global markets (shipment within 15 business days)

• Direct collaboration with Ohio Crankshaft Company for large-scale projects

• In-house pig iron production ensuring stable crankshaft supply at 12% lower cost than competitors