Epiroc EC 122 hydraulic breaker: design, efficiency and uptime notes for engineers
Reviewed by Tom Sullivan

First reported on The Construction Index
30 Second Briefing
Epiroc has launched the EC 122 hydraulic breaker, 80kg lighter than its predecessor with a 1,120kg service weight for 15–24t carriers, combining a nitrogen piston accumulator with an integrated control valve and energy recovery system to stabilise impact energy and improve hydraulic efficiency. A new turnable lower wear insert and replaceable piston liner allow field rotation and replacement without special tools, cutting downtime and repair costs. VibroSilenced Plus housing with isolated percussion mechanism and sealed openings reduces noise, vibration and internal wear for longer service intervals.
Technical Brief
- Turnable lower wear insert allows in-situ rotation to redistribute contact wear and delay bush replacement.
- Field replacement of the lower wear insert requires no special tools, shortening exposure time around the breaker.
- Replaceable piston liner localises internal damage, avoiding full body strip-downs after piston or bore scoring.
- Active percussion chamber ventilation reduces dust and gas accumulation, cutting risk of internal corrosion and seizure.
- VibroSilenced Plus housing with sealed openings also limits debris ingress, protecting hoses and fittings from impact damage.
- Such maintainable wear components and vibration-damping housings are increasingly becoming baseline requirements in OEM safety specifications.
Our Take
Across our recent coverage, Epiroc’s product launches span from lighter attachments like this EC 122 to high‑power 480 kW underground charging and autonomous Pit Viper drill rigs, signalling a strategy to cover the full equipment spectrum from carrier-mounted tools to mine‑scale systems.
The 15–24 t carrier range for the EC 122 aligns with the mid‑size segment where many mixed‑fleet contractors operate, so its compatibility will matter in the same way Epiroc is pushing OEM‑agnostic interfaces on its underground charging systems.
With multiple safety‑tagged Epiroc items in our database, including ground support collaborations and battery truck trials with BluVein, a lighter 80 kg-class attachment in the UK market fits a pattern of incremental design changes aimed at reducing handling risk and improving ergonomics at the face.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
Related Articles
Related Industries & Products
Mining
Geotechnical software solutions for mining operations including CMRR analysis, hydrogeological testing, and data management.
Tunnelling
Specialised solutions for tunnelling projects including grout mix design, hydrogeological analysis, and quality control.
CMRR-io
Streamline coal mine roof stability assessments with our cloud-based CMRR software featuring automated calculations, multi-scenario analysis, and collaborative workflows.


