The process to produce a crankshaft involves several steps:

1. Forging: The steel block is heated and shaped into a rough form using a hammer or press.

2. Heat treatment: The rough crankshaft is then heat-treated to increase its strength and durability.

3. Machining: The crankshaft is then machined to remove any excess material and to create the precise dimensions required for each component.

4. Grinding: The crankshaft is then ground to a smooth, polished surface finish.

5. Hardening: The crankshaft is hardened to increase the durability of the journals and bearing surfaces.

6. Balancing: Measuring the weight of each component and making adjustments to balance the crankshaft.

7. Inspection: Using specialized equipment and procedures to check for defects, cracks, and other issues that could affect the performance of the crankshaft.