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| Brand Name: | Jinke |
| Model Number: | JK820 |
| MOQ: | 1 |
| Price: | Negotiable |
| Delivery Time: | 40-60 Days |
| Payment Terms: | T/T,L/C |
The JK820 is the bigger machine in our crawler DTH lineup. We built it for mines and quarries running daily production volumes that need a rig handling larger holes, deeper depths, and harder rock without slowing down. Everything lives on one chassis: engine, screw compressor, hydraulic system, and mast. The JK820 steps up in weight class, compressor output, and structural build to take on work beyond a lighter rig. These machines are running blast hole patterns in large open-pit mines, hard granite quarries, and major infrastructure projects.
The JK820 packs a higher-output screw compressor directly coupled to the engine. More air volume at the hammer means faster penetration in hard rock and less time per hole. Drilling granite or basalt all day, this is the spec that moves the needle.
Beefed-up crawler frame with wider tracks and heavier base weight. More mass on the ground means less vibration during drilling, straighter holes, and longer bit life. The reinforced mast handles higher feed force without flexing under load.
Covers 105mm to 165mm holes and reaches deeper than the JK810. If your blast patterns need larger diameters or you drill past 60 meters, the JK820 is sized for that work from the start.
Full hydraulic pilot controls, proportional joysticks, automatic rod carousel. Drive to position, level the mast, set the angle, drill. One operator. No helper, no separate compressor operator, no crew of three.
Large fuel and hydraulic tanks sized for continuous production. Engine and compressor matched for efficiency at working RPM. Not burning extra fuel at idle or running the compressor at the wrong speed for the hammer.
Primary use is blast hole drilling. Swap the hammer and bit and the same machine handles anchor drilling, pile foundations, or water wells. The base machine stays the same, just the tooling changes.
| Item | JK820 Data |
|---|---|
| Machine weight | 7,500 - 8,500 kg (varies by configuration) |
| Hole diameter range | 105 - 165 mm |
| Max drilling depth | 80 m (with 3m rods, actual depth depends on rock and hammer) |
| Drill rod length | 3,000 mm per section |
| DTH hammer class | 4-inch and 5-inch |
| Power | Turbocharged diesel engine, 6-cylinder, electric start |
| Air compressor type | Built-in rotary screw, oil-injected, air-cooled |
| Working pressure range | 1.2 - 2.5 MPa |
| Air delivery | Higher output, sized for 4 to 5-inch DTH hammers |
| Travel drive | Independent hydraulic track motors, left and right |
| Track shoe width | 400 mm, heavy-duty reinforced steel |
| Ground pressure | Low ground pressure design for soft and uneven terrain |
| Gradeability | Up to 30 degrees on firm ground |
| Travel speed | 0 - 2.5 km/h (low gear, high torque) |
| Mast tilt range | 0 to 90 degrees forward, +/-45 degrees lateral swing |
| Rod handling | Hydraulic auto-loader with carousel magazine |
| Fuel tank | 150 - 200 liters (full shift capacity) |
| Hydraulic tank | 200+ liters with oil cooler and return filtration |
| Dust control | Dry cyclone collector or water injection system (select at order) |
| Operating temperature | -15 to 45 degrees Celsius (cold-start package optional) |
| Max altitude | 3,000 m standard, high-altitude turbo kit available above |
| Safety equipment | Emergency stop, FOPS/ROPS canopy, hose protection, lockable controls |
| Rock type | Typical penetration rate | Bit size range |
|---|---|---|
| Soft limestone, shale, marl | 1.0 - 1.8 meters per minute | 115 - 165 mm |
| Medium sandstone, dolomite | 0.6 - 1.2 meters per minute | 105 - 140 mm |
| Hard granite, basalt | 0.3 - 0.7 meters per minute | 105 - 127 mm |
| Very hard quartzite, gneiss, iron ore | 0.15 - 0.4 meters per minute | 105 - 115 mm |
| Broken, fractured ground | 0.5 - 1.0 meters per minute | 115 - 165 mm |
Field data from customer sites. Speed depends on rock conditions, bit wear, hammer state, air pressure, hole depth, and operator experience. Deeper holes and harder rock reduce penetration rate.
Daily blast hole drilling in high-output granite, limestone, and aggregate quarries. Handles the continuous duty cycle production quarries demand year-round.
Blast hole patterns in iron ore, copper, gold, and coal mines. Built for larger hole diameters and deeper benches common in hard rock surface mining.
Highway and railway rock excavation, dam foundation drilling, tunnel portal preparation. Works where the geology is tough and hole specs are demanding.
Deep anchor holes for large retaining structures, landslide stabilization, and dam tie-downs needing extended reach beyond standard blast hole depths.
Pile holes for utility-scale renewable projects where hundreds of holes go in across challenging terrain over extended project timelines.
Community and agricultural water supply wells reaching deeper aquifers. Handles extended drill string weight and higher air requirements.
Flat-rack container or Ro-Ro vessel for fully assembled machines. 40ft high-cube container available with mast and tracks removed. Anti-corrosion treatment applied before export. Complete shipping documents provided.
40 to 60 working days from order confirmation and deposit for standard spec. Custom configurations add about 15 working days. Spare parts can ship ahead of the machine if needed sooner.
12 months or 2,000 operating hours from commissioning. Covers engine, compressor, hydraulic system, and structural components. Spare parts inventory maintained for fast dispatch.
Starter spares kit included with every machine. English operation and maintenance manual with parts diagrams. Remote video support for troubleshooting. On-site commissioning engineer available upon request.
Send us your rock type, the hole diameter and depth you need, your daily drilling target in meters, and the destination. We will put together a JK820 configuration and delivered price for your project.
