Rotation Chuck – 7/8″ is the Atlas Copco service part carried under part number 3121088200. 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 BBD 94W 94WS 94WE Rock Drill. 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 Atlas Copco tool range 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: 3121088200
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3121088200
- Listed on breakdowns for: BBD 94W 94WS 94WE Rock Drill
