This is the Atlas Copco ratchet pin part number 3121077900, Crowder SKU AC-3121077900. It is part of the rotation mechanism of the tool the drive train that indexes the steel between blows. Wear here shows as slow or intermittent rotation.
If you are working from a machine rather than a part number, start at the parts diagram hub, or send us the model and serial and we will match it. Machines themselves are on the Atlas Copco catalog. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: 3121077900
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3121077900