Precision Grinding for Smooth Operation: Our crankshaft grinding services cater to both automotive and marine applications. We restore worn or out-of-round crankshafts or shafts with surface imperfections to their original or better-than-original condition, ensuring smooth engine operation and extended life.
Precision at Its Finest
Initial Inspection:
The crankshaft is thoroughly cleaned and inspected for any cracks or damage using methods like magnetic particle inspection (MPI). Measurements are taken to assess the extent of wear or damage.
Mounting and Alignment:
The crankshaft is mounted in the grinding machine. Proper alignment is crucial to ensure accuracy in grinding.
Grinding the Journals and Crankpins:
We use a crankshaft grinding machine, which rotates the crankshaft while moving the grinding wheel linearly across the journal or pin.
Material is gradually removed until the correct diameter is achieved. We adhere to OEM specifications or custom dimensions as required.
The process involves grinding to a specific undersize, typically in increments of 0.01mm, to match the size of the new bearings to be installed.
Polishing:
Post grinding, the journals and crankpins are polished to achieve a smooth surface finish. This step is crucial for reducing friction and wear on the bearings.
Dimensional Accuracy and Surface Finish:
We ensure that the ground surfaces meet the required dimensional tolerances, typically within 0.01mm. The surface finish is also critical and is measured in microinches or micrometers, with specific roughness requirements depending on the engine's application.
Final Inspection:
The crankshaft undergoes a final inspection to ensure all specifications are met. This includes size, surface finish, and checking for any remaining imperfections.
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