This is Chicago Pneumatic part number R087990 (also carried as 3310102637) cylinder – complete, stocked at Crowder Supply as CP-R087990. The cylinder is the bore the piston runs in, and it sets the working clearance of the rock drill once the bore opens up, air bypasses the piston and blow energy drops.
The published breakdown lists it on the CP 32A B B-O Rock Drill and CP 0032 Rock Drill, and on 1 other machine. Check it against the reference number on the diagram first; serial breaks change what fits.
If you need the parts around it, the full diagram library has the full breakdown library, and the CP tool catalog covers the machines themselves. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.
- Part number: R087990
- Also listed as: 3310102637
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-R087990
- Listed on breakdowns for: CP 32A B B-O Rock Drill, CP 0032 Rock Drill, CP 32A Model L Rock Dril
