Cylinder – 4″ Rnd carries Chicago Pneumatic part number P144285 and is stocked here under CP-P144285. The cylinder is the bore the piston runs in, and it sets the working clearance of the chipping hammer once the bore opens up, air bypasses the piston and blow energy drops.
It appears on the CP 4120 Chipping Hammer and CP 4121 Chipping Hammer breakdown. Check it against the reference number on the diagram first; serial breaks change what fits.
The rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the full diagram library. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: P144285
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-P144285
- Listed on breakdowns for: CP 4120 Chipping Hammer, CP 4121 Chipping Hammer

