Chuck – 1″ Hex X 4 1/4″, Chicago Pneumatic part number R093890 (also carried as 3310103583), listed at Crowder Supply as CP-R093890. It holds the working steel in the rock drill. Retention hardware is a wear and safety item a stretched or cracked retainer lets the steel move, which chews the front head.
It appears on the CP 32A Model L Rock Dril and CP 32A B B-O Rock Drill, and on 2 other machines breakdown. Check it against the reference number on the diagram first; serial breaks change what fits.
Use the full diagram library to work through the rest of the assembly, or the CP tool catalog if you are pricing a replacement machine. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: R093890
- Also listed as: 3310103583
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-R093890
- Listed on breakdowns for: CP 32A Model L Rock Dril, CP 32A B B-O Rock Drill, CP 0032 Rock Drill, CP 0069 Rock Drill

