Atlas Copco rotary drill rigs pair documented kelly-bar depth with Tier 4 Final compressor trains so foundation and quarry crews can hold penetration rates without guessing hydraulic headroom.
Side-by-side duty data for procurement managers sizing bored-pile and quarry pre-split fleets. Highlighted rows show the capacity steps that change crane-assist and compressor selection.
| Parameter | AC-RD 220 | AC-RD 320 |
|---|---|---|
| Operating mass | 22.0 t | 32.5 t |
| Max rotary torque | 180 kN·m | 280 kN·m |
| Kelly drilling depth | 55 m | 80 m |
| Engine | 129 kW Tier 4 Final | 194 kW Tier 4 Final |
| Hydraulic cleanliness ship | ISO 4406 18/16/13 | ISO 4406 18/16/13 |
| Cab certification | ROPS + FOPS | ROPS + FOPS + LMI |
Four capability stories that equipment managers verify before awarding a foundation or quarry drill package.
Main pumps, rotary heads and crowd cylinders ship after factory pre-flush. On-site sampling logs feed your fleet portal so particulate ingress on dusty quarry pads is caught before valve stack scoring begins.
Drill carriers and portable compressors use DPF + SCR aftertreatment with ISO 8178 C1 cycle documentation. In-cab DEF alarms and NOx/PM logs travel with each serial number for bid-compliance packs.
Track shoes, idlers and sprockets are specified for abrasive limestone and granite pads with an 8,000-hour rebuild interval target. Drop-in geometry keeps MTTR low when a regional hub swaps a worn group overnight.
Regional hubs stock rotary head seal kits, compressor valves and breaker tools. Contracted sites target under 18-hour mean time to repair so a stopped kelly string does not idle the entire piling crew.
AC-RD 220 class units average 12–14 weeks ex-works, plus a seven-day on-site commissioning audit covering hydraulic cleanliness, torque calibration and operator familiarization. Compressor trains ordered with the rig ship on the same ocean booking when possible.
Current production drill carriers and portable compressors ship Tier 4 Final / Stage V with DPF + SCR. Each unit includes a machine-specific NOx and particulate log suitable for project environmental appendices.
We match FAD and pressure to bit diameter, hole depth and altitude derate. Selection worksheets in Tech Specs list recommended packages from 14 to 35 m³/min so quarry pre-split and foundation crews avoid underpowered flushing.
Typical rebuilds land at 18–22% of new-machine list when shoes, idlers, sprockets and carrier rollers are replaced as a group after a wear survey. Quotes are serial-specific after pad-abrasion inspection.
Contracted sites inside hub coverage target under 18-hour MTTR for critical rotary-head and compressor failures. Remote telematics triage starts within the first hour of a ticket to ship the correct seal kit before the van rolls.
Factory target is ISO 4406 18/16/13 for main and rotary circuits. Commissioning includes bottle sampling; results are archived against the serial number for warranty and fleet oil-analysis baselines.
Regional parts hubs · < 18h MTTR on contracted sites · CE / EPA / ISO documentation packs with every quotation.