This is the Chicago Pneumatic bearing ring part number P144663, which also shows up as 3310104590, Crowder SKU CP-P144663. This part guides its mate and takes the wear that would otherwise land on the casting.
It is called out in the parts diagram for the CP 4121 Chipping Hammer and CP 0017 SVR Chipping Hammer. Pull up the diagram and confirm the reference number for your serial before ordering.
Everything else on that machine is one page away on the parts breakdown index; complete tools are on the Chicago Pneumatic lineup. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: P144663
- Also listed as: 3310104590
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-P144663
- Listed on breakdowns for: CP 4121 Chipping Hammer, CP 0017 SVR Chipping Hammer

