Rotation Chuck Bushing – 7/8 x 4 1/4″ is the Atlas Copco service part carried under part number 3121082400. 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.
The published breakdown lists it on the BBC 34DSI Rock Drill and BBC 16W WS Pusher Leg Drill, and on 1 other machine. Pull up the diagram and confirm the reference number for your serial before ordering.
Use the parts breakdown index to work through the rest of the assembly, or the Atlas Copco lineup if you are pricing a replacement machine. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.
- Part number: 3121082400
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3121082400
- Listed on breakdowns for: BBC 34DSI Rock Drill, BBC 16W WS Pusher Leg Drill, BBC 34W WS Pusher Leg Drill
