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| Brand Name: | Jinke |
| Model Number: | JK820 |
| MOQ: | 1 |
| Price: | Negotiable |
| Payment Terms: | T/T,L/C |
The JK820 is the big brother in our crawler DTH lineup. We built it for mines and quarries that run serious daily production volumes and need a machine that handles bigger holes, deeper depths, and harder rock without slowing down. Like the JK810, everything lives on one chassis -- engine, screw compressor, hydraulic system, and mast. But the JK820 steps up in weight class, compressor output, and structural build to take on work that would push a lighter rig past its comfort zone. We have these machines running blast hole patterns in large open-pit mines, hard granite quarries, and major infrastructure projects where downtime is not an option.
The JK820 packs a higher-output screw compressor directly coupled to the engine. More air volume and pressure at the hammer means faster penetration in hard rock and less time per hole. If you are drilling granite or basalt all day, this is the spec that matters most.
The JK820 runs on a beefed-up crawler frame with wider tracks and a heavier base weight. More mass on the ground means less vibration during drilling, straighter holes, and longer bit life. The reinforced mast handles high feed force without flexing.
The JK820 covers a broader hole diameter range and reaches deeper than our JK810. If your blast patterns call for 115mm to 165mm holes or you need to drill past 60 meters, this is the rig sized for that work.
Same single-operator setup as our other rigs. Full hydraulic pilot controls with proportional joysticks. Automatic rod carousel handles the drill steel. The operator drives it to position, levels the mast, sets the angle, and drills -- no helper, no separate compressor operator, no crew of three.
Large fuel and hydraulic tanks sized for a full production shift. The engine and compressor are matched for efficiency at working RPM, so you are not burning extra fuel at idle or running the compressor at the wrong speed for the hammer.
Set it up for blast hole drilling as the primary job, then swap the hammer and bit for anchor drilling, pile foundation work, or water well drilling when the project changes. The base machine does not change, just the tooling at the end of the drill string.
| 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 than JK810, sized for 4 to 5-inch 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 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 (choose at order) |
| Operating temperature | -15 to 45 degrees Celsius (cold-start package optional) |
| Max altitude | 3,000 m standard, high-altitude turbo kit available |
| Safety equipment | Emergency stop, FOPS/ROPS canopy, hose protection, lockable controls |
| Rock type | Typical speed | 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 averaged across customer sites. Speed varies with rock hardness, bit wear, hammer condition, air pressure, hole depth, and operator skill. 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 that production quarries demand.
Blast hole patterns in iron ore, copper, gold, and coal mines. Built for the larger hole diameters and deeper benches common in hard rock mining.
Highway and railway rock excavation, dam foundation drilling, tunnel portal preparation. Works where the geology is tough and the hole specs are demanding.
Deep anchor holes for large retaining structures, landslide stabilization systems, and dam tie-downs that need extended reach beyond standard blast hole depths.
Pile hole drilling for utility-scale renewable energy projects where hundreds or thousands of holes need to go in across challenging terrain.
Community and agricultural water supply wells that need to reach deeper aquifers. Handles the extended drill string weight and higher air requirements of deep water well work.
Flat-rack container or Ro-Ro vessel for fully assembled machines. 40ft high-cube container loading available with boom and tracks removed. Anti-corrosion treatment applied before export. Full shipping documents provided.
40 to 60 working days from order and deposit for standard spec. Custom configurations add about 15 working days. Spare parts can ship ahead of the machine.
12 months or 2,000 operating hours from commissioning. Covers engine, compressor, hydraulic system, and structure. Spare parts inventory maintained for fast dispatch to keep you drilling.
Starter spares kit included. English operation and maintenance manual with parts catalog. Remote video support for troubleshooting. On-site commissioning engineer available on request.
If you need a blast hole drilling rig for your mine, quarry, or construction project, send us the details. We need to know your rock type, the hole diameter and depth you plan to drill, your daily production target in meters, and the destination. We will put together a JK820 configuration and price with shipping to your location.
