Ordering by number: this is 3131002300, the Atlas Copco chuck nut. It holds the working steel in the rock drill. Retention hardware is a wear and safety item a stretched or cracked retainer lets the steel move, which chews the front head.
You will find it on the diagram for the BBD 46 WS/WR Rock Drill. Check it against the reference number on the diagram first; serial breaks change what fits.
If you need the parts around it, the parts diagram hub has the full breakdown library, and the Atlas Copco catalog covers the machines themselves. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: 3131002300
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3131002300
- Listed on breakdowns for: BBD 46 WS/WR Rock Drill
