This is Atlas Copco part number 3115122000 chuck nut, stocked at Crowder Supply as AC-3115122000. Retaining the tool steel is its whole job. Worn retention lets the shank hammer against the bore and turns a cheap part into an expensive front head.
It appears on the BBC 34W WS Pusher Leg Drill and BBC 34DSI Rock Drill, and on 1 other machine breakdown. Worth matching the reference number on the diagram against your own machine before you order the same part number can sit in more than one position.
The rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the parts diagram library. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.
- Part number: 3115122000
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3115122000
- Listed on breakdowns for: BBC 34W WS Pusher Leg Drill, BBC 34DSI Rock Drill, BBC 16W WS Pusher Leg Drill
