Ordering by number: this is R278010, the Chicago Pneumatic retainer plate. This part keeps the steel captive in the rock drill under repeated impact, so it is inspected at every steel change and replaced on condition rather than on a schedule.
The published breakdown lists it on the CP 9RR 9RRS Rock Drill. Compare it to the reference callout on the diagram to be sure it is the position you need.
Use the parts breakdown index to work through the rest of the assembly, or the CP tool catalog if you are pricing a replacement machine. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: R278010
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-R278010
- Listed on breakdowns for: CP 9RR 9RRS Rock Drill
