This is the Chicago Pneumatic piston part number F011998, Crowder SKU CP-F011998. Impact energy comes from this part accelerating down the bore. Wear on the strike face or the seal lands costs blow energy before it ever causes a hard failure.
It is called out in the parts diagram for the FL 0025 VR SVR Pick Hammer and CP 0122SVR 0125SVR Pick Hammer, and on 1 other machine. 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.
Use the parts diagram library to work through the rest of the assembly, or the CP tool catalog if you are pricing a replacement machine. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: F011998
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-F011998
- Listed on breakdowns for: FL 0025 VR SVR Pick Hammer, CP 0122SVR 0125SVR Pick Hammer, CP 0122S H22 0122 SL H22 0125 S R25 Pick Hammer

