Ratchet Box is the Atlas Copco service part carried under part number 3121016800. It is part of the rotation mechanism of the pusher leg the drive train that indexes the steel between blows. Wear here shows as slow or intermittent rotation.
The published breakdown lists it on the BBC 16W WS Pusher Leg Drill. The tool itself is the Atlas Copco BBC 16W Pneumatic Rock Drill. Check it against the reference number on the diagram first; serial breaks change what fits.
Work through the rest of the assembly on the same breakdown, or start over from the parts breakdown index. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 3121016800
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3121016800
- Listed on breakdowns for: BBC 16W WS Pusher Leg Drill
