Flexible folding boom.
The folding-boom arrangement expands drilling coverage and supports fast setup across changing bench geometry.
ProductLGMRT · Rock Drill Rig
A surface hydraulic top-hammer rig with a folding boom for flexible drilling coverage in mines, quarries and construction. The current public ST120F page specifies a 76–127 mm hole range, Sandvik rock drill and 10 bar air system.

Product parameters
Values shown are reference data. Final equipment configuration and regional compliance are confirmed in the technical agreement.
| Parameter | Specification |
|---|---|
| Technical specifications | |
| Brand | LGMRT |
| Supply-table model | PST120F |
| Current public model | ST120F |
| Drilling method | Surface top hammer |
| Hole diameter | 76–127 mm |
| Drill string | T45 / T51; 3,660 mm rods |
| Typical maximum depth | Approx. 25 m, configuration dependent |
| Engine power | 177 kW |
| Rock drill power | 20 kW; 22 kW optional |
| Air system | 8.1 m³/min at 10 bar; 9.6 m³/min optional |
| Dimensions | Confirm by configuration |
Product details
A surface hydraulic top-hammer rig with a folding boom for flexible drilling coverage in mines, quarries and construction. The current public ST120F page specifies a 76–127 mm hole range, Sandvik rock drill and 10 bar air system.
The folding-boom arrangement expands drilling coverage and supports fast setup across changing bench geometry.
Load-sensitive hydraulics and compressor management are designed to reduce unnecessary fuel consumption.
The Sandvik rock-drill package is intended for stable penetration and convenient field maintenance.
Jobsite fit
Send us the target diameter, depth, rock hardness, altitude and local emission requirements. We will recommend the drill string, hammer and regional machine configuration before quoting.
Discuss your application →Heavy Rig support
We verify ground conditions, hole plan and production targets.
Drill tools, options, documents and delivery scope are locked before production.
Recommended startup spares and consumables help protect your first operating season.
Request a quote
Send your target hole diameter, depth, rock type and timeline. Heavy Rig will help narrow the configuration.
Heavy Rig inquiry