Kaishan Underground Drilling Rigs/Underground Scaling Rigs (Rock Scalers)
KQ21
KQ21 hydraulic scaling rig is driven by diesel engine. It is mainly suitable for scaling operations in tunnels and non coal mine hill and various underground projects. The folding arm is fitted with the hydraulic hammer and translation mechanism driven by the rotating oil cylinder and it is capable of all-round operations of working surface, top plate, side wall and base plate. Meanwhile, proportion pilot control is applied to the hydraulic system, characterized by flexible manipulation and smooth operations. The equipment can considerably improve the scaling efficiency and safety based on compact structure, excellent mobility, small turning radius and powerful climbing capacity.
Dimensions & weight — Overall dimensions (L × W × H)
6000 × 1700 × 1840 mm
Dimensions & weight — Weight
6500 kg
Dimensions & weight — Ground clearance
230 mm
Diesel engine
YCF3675-T480
Overview
KQ21 hydraulic scaling rig is driven by diesel engine. It is mainly suitable for scaling operations in tunnels and non coal mine hill and various underground projects. The folding arm is fitted with the hydraulic hammer and translation mechanism driven by the rotating oil cylinder and it is capable of all-round operations of working surface, top plate, side wall and base plate. Meanwhile, proportion pilot control is applied to the hydraulic system, characterized by flexible manipulation and smooth operations. The equipment can considerably improve the scaling efficiency and safety based on compact structure, excellent mobility, small turning radius and powerful climbing capacity.
Key highlights
- ✓The folding boom carries a hydraulic hammer driven by a rotating cylinder together with a mechanical translation mechanism, giving all-round coverage of the working face, roof, side walls and floor.
- ✓Proportional pilot control of the hydraulic system delivers flexible, smooth hammer positioning.
- ✓Compact chassis, excellent mobility, small turning radius and powerful climbing capacity.
Applications: Scaling (loose-rock removal) of roof, side walls and floor in roadways, tunnels and adits of non-coal mines and other underground works.
Specifications
Request the current specification sheet for this model using the button above.
Dimensions & weight
| Overall dimensions (L × W × H) | 6000 × 1700 × 1840 mm |
| Weight | 6500 kg |
| Ground clearance | 230 mm |
Other specifications
| Diesel engine | YCF3675-T480 |
| Power / speed | 55.8 kW / 2200 rpm |
| Drive system | Hydrostatic drive |
| Tires | 300-15 |
| Maximum tramming speed | 7 km/h |
| Maximum climbing angle | 25% (14°) |
| Travelling braking | Wet brake |
| Swing angle | ±6° |
| Steering angle | ±40° |
| Turning radius (inner / outer) | 2100 / 3800 mm |
| Impact energy | 350 J |
| Impact frequency | 9-16 Hz |
| Working pressure | 90-125 bar |
| Drive flow | 25-40 L/min |
| Maximum working height | 6200 mm |
| Maximum working width | 5600 mm |
| Boom swing angle | ±30° |
| Hydraulic hammer pitch angle | 100° |
| Swing cylinder angle | ±90° |
| Drill arm extension | 1200 mm |
| Cab backward tilt | 15° |
| Cab lift | 400 mm |
| Water pump power | 0.5 kW |
| Water pump flow | 2 L/min |
Applications
- Underground mining
- Rock scaling
- Ground support
Recommended packages
Air compressor match
Underground jumbos run on the mine's electric/hydraulic supply — confirm voltage and water/air services at the heading. Where air is needed, match a KSDY electric compressor to the site power.
DTH hammer & bits
Kaishan underground rigs use premium hydraulic rock drills (Montabert HC50/HC95/HC109) for face and production drilling; the KSQ31 DTH model runs K-class hammers. Confirm rock drill model against your tunnel section.
Need a complete drilling package? Request a rig + compressor + tooling quote →
Frequently asked questions
What applications suit the KQ21?
Underground mining, Rock scaling, Ground support.
Which air compressor pairs with the KQ21?
Underground jumbos run on the mine's electric/hydraulic supply — confirm voltage and water/air services at the heading. Where air is needed, match a KSDY electric compressor to the site power.
Can the equipment be configured to my project?
Send your project details through the inquiry form and we will confirm the available configuration for the selected model before quotation.