This is Atlas Copco part number 3121059200 guide ring, stocked at Crowder Supply as AC-3121059200. Bushings carry the running clearance in a pusher leg. They are meant to wear first, which is exactly why they are a stocked service item.
The published breakdown lists it on the BBC 16W WS Pusher Leg Drill and BBC 34W WS Pusher Leg Drill, and on 1 other machine.
Use the parts diagram hub to work through the rest of the assembly, or the Atlas Copco tool range if you are pricing a replacement machine. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: 3121059200
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3121059200
- Listed on breakdowns for: BBC 16W WS Pusher Leg Drill, BBC 34W WS Pusher Leg Drill, BBC 34DSI Rock Drill

