Gasket, Atlas Copco part number 3121004300, listed at Crowder Supply as AC-3121004300. 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.
It shows up in the parts breakdown for the BBD 94W 94WS 94WE Rock Drill and BBC 34DSI Rock Drill, and on 1 other machine. Compare it to the reference callout on the diagram to be sure it is the position you need.
The parts diagram hub indexes every breakdown we publish, and the Atlas Copco lineup has the tools these parts go into. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.
- Part number: 3121004300
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3121004300
- Listed on breakdowns for: BBD 94W 94WS 94WE Rock Drill, BBC 34DSI Rock Drill, BBC 34W WS Pusher Leg Drill
