O-Ring is the Atlas Copco service part carried under part number 0663612000. It keeps air or oil where it belongs inside the rock drill. Once it flattens or hardens, the machine loses pressure across the joint and performance falls off gradually rather than all at once.
You will find it on the diagram for the BBC 34DSI Rock Drill and BBC 34W WS Pusher Leg Drill. Compare it to the reference callout on the diagram to be sure it is the position you need.
Everything else on that machine is one page away on the full diagram library; complete tools are on the Atlas Copco tool range. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.
- Part number: 0663612000
- Manufacturer: Atlas Copco
- Crowder SKU: AC-0663612000
- Listed on breakdowns for: BBC 34DSI Rock Drill, BBC 34W WS Pusher Leg Drill
