This is Atlas Copco part number 3121085100 drill steel retainer – 7/8″, stocked at Crowder Supply as AC-3121085100. 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.
Crowder’s breakdowns list this part on the BBC 34DSI Rock Drill and BBC 16W WS Pusher Leg Drill, and on 7 other machines. Pull up the diagram and confirm the reference number for your serial before ordering.
The rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the parts breakdown index. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: 3121085100
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3121085100
- Listed on breakdowns for: BBC 34DSI Rock Drill, BBC 16W WS Pusher Leg Drill, BBC 34W WS Pusher Leg Drill, RH 658L/LS/LS-01 Rock Drill, RH 572E Rock Drill, RH 571-5L 571-5LS Rock Drill, +3 more
