Ordering by number: this is 9234000001, the Atlas Copco hammer cylinder. The cylinder is the bore the piston runs in, and it sets the working clearance of the breaker once the bore opens up, air bypasses the piston and blow energy drops.
The published breakdown lists it on the Cobra ProE Gas Breaker. Compare it to the reference callout on the diagram to be sure it is the position you need.
If you need the parts around it, the parts breakdown index has the full breakdown library, and the Atlas Copco catalog covers the machines themselves. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: 9234000001
- Manufacturer: Atlas Copco
- Crowder SKU: AC-9234000001
- Listed on breakdowns for: Cobra ProE Gas Breaker

