This is Atlas Copco part number 3121076983 rotation Chuck- complete, stocked at Crowder Supply as AC-3121076983. 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 RH 658L/LS/LS-01 Rock Drill and RH 656W Rock Drill. It comes off the RH 658 L Surface Rock Drill. 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.
Everything else on that machine is one page away, and the parts diagram library indexes every breakdown we publish. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: 3121076983
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3121076983
- Listed on breakdowns for: RH 658L/LS/LS-01 Rock Drill, RH 656W Rock Drill
