This is the Atlas Copco ratchet wheel part number 3111001900, Crowder SKU AC-3111001900. It is part of the rotation mechanism of the rock drill the drive train that indexes the steel between blows. Wear here shows as slow or intermittent rotation.
You will find it on the diagram for the BBD 15E ET Rock Drill and BBD 12T-01 TS-01 Rock Drill, and on 1 other machine. Pull up the diagram and confirm the reference number for your serial before ordering.
The rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the parts diagram hub. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: 3111001900
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3111001900
- Listed on breakdowns for: BBD 15E ET Rock Drill, BBD 12T-01 TS-01 Rock Drill, BBD 12D DS Rock Drill

