Ordering by number: this is 3121500051, the Atlas Copco spring. Springs in a rock drill fatigue with cycle count rather than age, so a control that has gone lazy or fails to return is usually this part rather than the component it drives.
The published breakdown lists it on the BBD 94W 94WS 94WE Rock Drill and RH 656W Rock Drill, and on 1 other machine. It comes off the RH 658 L Surface Rock Drill. Compare it to the reference callout on the diagram to be sure it is the position you need.
Need the parts around it? They are on the same breakdown, and the parts diagram hub covers every machine we publish. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: 3121500051
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3121500051
- Listed on breakdowns for: BBD 94W 94WS 94WE Rock Drill, RH 656W Rock Drill, RH 658L/LS/LS-01 Rock Drill
