KT9C Integrated Down The Hole Drill Rig For Open Use
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KT9C Integrated Down The Hole Drill Rig For Open Use
Jining Dongtai Lite Engineering Machinery Co., Ltd. is one of the leading manufacturers and suppliers of kt9c integrated down the hole drill rig for open use in China. With abundant experience, we warmly welcome you to buy customized kt9c integrated down the hole drill rig for open use made in China here from our factory. Good service and quality products are available.
Product Overview
The KT9C Integrated Down The Hole Drill Rig For Open Use represents a generational leap beyond the KT 7 series, entering an entirely new performance tier that has historically been the exclusive domain of the largest conventional standalone DTH rigs. Engineered for the most demanding large-diameter, ultra-deep drilling applications in major open-pit mining operations and high-production quarrying, the KT9C combines a tri-engine power architecture, the highest compressor output in our integrated lineup, and a reinforced ultra-heavy-duty crawler platform to deliver hole diameters up to 254 mm and drilling depths up to 55 m - all within a single, fully self-contained machine that requires no external compressor infrastructure.
The KT9C's defining innovation is its tri-engine configuration: a dedicated primary engine for the drilling hydraulics, a dedicated secondary engine for the high-pressure compressor, and a dedicated tertiary engine for the crawler drive and auxiliary systems. This architecture eliminates every form of power competition between the machine's three major load groups, ensuring that the compressor, the drilling system, and the tramming drive each operate at their full rated output simultaneously and independently - a capability that no dual-engine integrated design can match at this scale.
For mine operators and drilling contractors who have reached the absolute ceiling of the KT 7 series and require the next level of integrated drilling capacity, the KT9C delivers without compromise: the largest hole diameters, the deepest single-pass capability, the highest air output, and the most powerful drilling system available in any self-contained integrated DTH machine in our range.
The KT9C is the recommended choice when project specifications require hole diameters above 229 mm, drilling depths beyond 48 m, DTH hammer sizes of 8 inches or larger, or when the tri-engine architecture's simultaneous full-output capability across all three load groups is required for sustained high-production operation at maximum capacity.
Key Features & Technical Advantages
Tri-Engine Architecture: The KT9C Breakthrough
- Three fully independent engines, three fully independent load groups: primary engine (160 kW) drives the drilling hydraulics exclusively; secondary engine (220 kW) drives the high-pressure compressor exclusively; tertiary engine (93 kW) drives the crawler undercarriage and auxiliary systems exclusively. No engine shares its output with any other load group at any time.
- Simultaneous full-output operation: the KT9C can tram at full speed, drill at full feed force and rotation, and maintain full compressor output all at the same time - a capability impossible in dual-engine designs where the crawler and drilling hydraulics share a single engine. This eliminates the productivity loss caused by compressor output reduction during repositioning moves on multi-position drilling programs.
- Total installed power of 473 kW, the highest in the integrated series, providing the combined output required to sustain ultra-large-diameter DTH drilling at full production rates across extended multi-shift operations in the hardest geological conditions.
- Independent engine management with cross-system health monitoring: all three engines are monitored by the central control system, with automatic protective responses if any engine approaches operating limits, and independent start/stop capability for each engine to optimize fuel consumption during partial-load operating phases.
Ultra-High-Output Compressor System
- Dedicated 220 kW compressor engine driving the largest integrated compressor unit in our lineup, delivering 45 to 65 m3/min of free air delivery at working pressures up to 45 bar - the highest air output and pressure specification in the integrated series.
- 45 bar maximum working pressure: compatible with the latest generation of ultra-high-pressure DTH hammers that deliver the highest penetration rates available in hard rock, including formations above 400 MPa UCS where standard-pressure hammers are inefficient.
- 8-inch to 10-inch DTH hammer compatibility: the compressor's air volume and pressure specification covers the full range of large-diameter DTH hammers used in production open-pit drilling, including the largest hammer sizes that were previously only achievable with dedicated standalone compressor units.
Ultra-Heavy-Duty Drilling System
- Drill hole diameter range: 203 mm to 254 mm, extending the integrated concept into hole diameter territory previously exclusive to conventional standalone rigs with separate compressor units.
- Maximum drilling depth: up to 55 m per setup, the deepest single-pass capability in the integrated series, suitable for the highest bench configurations used in large-scale open-pit blasting programs.
- Maximum-class rotary head with output torque of 7,000 N.m, providing the rotational force required to drive the largest-diameter drill strings through the hardest rock formations at maximum depth without deviation or string deflection.
- Ultra-high-capacity hydraulic feed system with maximum feed force of 90 kN and pull-back of 100 kN, delivering the thrust required for 9-inch to 10-inch DTH hammer operation in very hard rock while maintaining precise bit-to-rock contact pressure control.
- Extended heavy-duty mast with maximum stroke length, supporting single-pass drilling to 55 m depth and minimizing rod-addition cycles on deep-bench programs.
- Mast angle adjustment supports vertical and inclined drilling up to 30 degrees from vertical for pre-split blasting, contour drilling, and angled production holes across the full hole diameter range.
Open / Canopy Operator Station
- ROPS-rated canopy operator platform providing overhead protection and clear 270-degree visibility of the drill mast, hole collar, and surrounding bench area, designed for single-operator use with full control access from the ergonomic suspension seat.
- Wide-format digital instrument panel displaying real-time parameters for all three engines, the compressor, and the drilling system simultaneously, giving the operator complete machine visibility from a single workstation.
- Lower capital cost than an enclosed-cabin configuration: the open-station design reduces acquisition cost while delivering identical drilling performance, making the KT9C the most cost-efficient path to ultra-class integrated DTH capacity for operations where enclosed cabin requirements do not apply.
- Full intelligent control suite: programmable multi-layer drilling parameter control, dual-axis anti-deviation system, adaptive anti-jamming, comprehensive data logging, and satellite-primary remote monitoring - all standard.
Reinforced Ultra-Heavy-Duty Crawler Platform
- Extra-wide gauge reinforced steel crawler undercarriage with hydraulic track tensioning and automatic ground pressure equalization, engineered for the KT9C's operating weight and the stability demands of ultra-large-diameter drilling on steep bench faces and loose ground.
- Dedicated tertiary crawler engine ensures full tramming speed is maintained regardless of drilling or compressor load, eliminating the slow repositioning that affects dual-engine machines when the drilling engine is also powering the crawler drive.
- Optional dust suppression system (water mist or dry collector) for compliance with site dust emission requirements and improved hole cleanliness in sensitive environments.
Technical Specifications
Typical Applications
- Ultra-large-scale open-pit mining: high-bench blast-hole drilling for iron ore, copper, gold, coal, and non-metallic minerals at major operations requiring hole diameters of 203 to 254 mm and depths up to 55 m in a single integrated machine.
- High-production quarrying at maximum scale: large-diameter production drilling in granite, basalt, limestone, and sandstone quarries where output requirements demand 8-inch to 10-inch DTH hammer performance without a separate compressor unit.
- Ultra-high-pressure DTH applications: operations using the latest generation of ultra-high-pressure DTH hammers above 40 bar to maximize penetration rates in very hard rock formations up to 420 MPa UCS, where the KT9C's 45 bar compressor capability is essential.
- Simultaneous tram-and-drill operations: high-cycle drilling programs where the tri-engine architecture's ability to maintain full compressor output during tramming eliminates the productivity loss that affects dual-engine machines during repositioning moves.
- Remote ultra-high-output sites: large-scale drilling programs in locations without reliable cellular coverage where satellite-primary remote monitoring and predictive maintenance are essential, and where production requirements exceed the KT 7 series capacity.
- Pre-split and precision wall control at maximum scale: large-diameter angle drilling for final pit wall control in major open-pit mines, where the KT9C's hole diameter range and depth capability enable efficient pre-split patterns on the highest benches.
Frequently Asked Questions
Q: What is the tri-engine architecture, and why does it matter at this scale?
A: In dual-engine integrated rigs (KT5D through KT 7H), one engine drives the drilling hydraulics and the crawler drive together, while a second engine drives the compressor. This means that when the machine is tramming, the drilling engine's power is split between the crawler and the hydraulic system, and if the compressor engine is also under load, the total power available to each system is reduced. The KT9C adds a third dedicated engine for the crawler and auxiliary systems, so all three major load groups - drilling hydraulics, compressor, and crawler - each have their own full-rated power source. The result is that the KT9C can tram at full speed, drill at full feed force and rotation, and maintain full compressor output simultaneously, with no power competition between any of the three systems. At the KT9C's scale of operation, this simultaneous full-output capability translates directly into higher holes-per-shift productivity on multi-position drilling programs.
Q: How does the KT9C compare to the KT 7H, and when should I step up to the larger model?
A: The KT 7H is the flagship of the KT 7 series, drilling 165 to 229 mm holes to 48 m depth with 310 kW of total installed power and up to 40 bar compressor pressure. The KT9C steps beyond that in every dimension: hole diameters from 203 to 254 mm, depths to 55 m, 473 kW of total power across three independent engines, compressor pressure up to 45 bar, and free air delivery of 45 to 65 m3/min for 8-inch to 10-inch DTH hammer operation. The KT9C also adds the tri-engine simultaneous full-output capability and a dedicated crawler engine. Choose the KT9C when your project requires hole diameters above 229 mm, depths beyond 48 m, ultra-high-pressure hammer operation above 40 bar, or when the KT 7H's specifications have been assessed and found insufficient.
Q: What DTH hammer sizes are compatible with the KT9C?
A: The KT9C's compressor delivers 45 to 65 m3/min of free air delivery at working pressures up to 45 bar, which is sufficient to drive 7-inch to 10-inch DTH hammers at full rated performance. Compatible hole diameters range from 203 mm to 254 mm depending on the hammer and bit combination selected. For ultra-high-pressure hammer applications above 40 bar, the KT9C is the only model in the integrated series with the compressor capacity to sustain full hammer performance at this scale. Our technical team can recommend the optimal hammer and bit specification for your target hole diameter and rock hardness.
Q: Why does the KT9C use an open canopy station rather than an enclosed cabin?
A: The KT9C is positioned as the maximum-capacity, cost-efficient configuration in the KT9 series, analogous to the KT 7C within the KT 7 series. The open canopy station delivers identical drilling performance to an enclosed-cabin variant at lower capital cost and approximately 1,500 to 2,000 kg less operating weight, making it the preferred choice for operations where enclosed cabin requirements are not mandated by site regulations or operating context. For operations requiring an enclosed ROPS/FOPS cabin at this performance level, please enquire about the KT9H configuration. The ROPS-rated canopy provides certified overhead protection and meets the operator protection requirements of the majority of mining and quarrying regulatory frameworks worldwide.
Q: How does the KT9C compare to using a KG590 rig with a large external compressor?
A: For hole diameters in the 203 to 229 mm overlap range, both configurations can achieve comparable drilling performance. The KG590 with a large external compressor offers maximum flexibility in compressor sizing and can be upgraded independently. The KT9C offers the operational advantages of a single integrated machine: faster repositioning with the dedicated crawler engine maintaining full tramming speed during drilling, simpler logistics, reduced bench congestion, no air hose management, and a single machine to transport and service. For hole diameters above 254 mm or air volumes above 65 m3/min, a conventional standalone rig with an appropriately sized external compressor remains the recommended choice.
Q: What are the fuel consumption implications of the tri-engine design?
A: The KT9C's total installed power of 473 kW across three engines results in higher fuel consumption than dual-engine integrated rigs. However, the relevant comparison is against a conventional rig-plus-compressor combination at this scale, which also runs two or more engines of similar combined power. The KT9C's independent engine management system optimizes fuel consumption by allowing individual engines to be started and stopped based on the current operating phase: during tramming without drilling, the secondary compressor engine can be idled; during stationary drilling, the tertiary crawler engine can be reduced to idle. The programmable drilling control system also prevents over-thrusting and unnecessary high-load operation, further optimizing fuel utilization across the shift.
Q: What are the transportation and mobilization requirements for the KT9C?
A: With an operating weight of approximately 42,000 kg, the KT9C requires a heavy-duty low-bed trailer rated for 45 tonnes or above; special transport permits will be required in most markets. Despite its size, as a single integrated machine it requires only one trailer and one loading operation for mobilization, compared to the two or more separate loads required for a conventional rig-plus-compressor combination at this scale. On-site, the rig self-trams between drilling positions at up to 2.0 km/h with full compressor output maintained during tramming. For international export, the machine is shipped as break-bulk cargo or on a heavy flat-rack, with full export documentation provided.
Q: What after-sales support and service infrastructure do you provide for KT9C deployments?
A: We provide comprehensive after-sales support through a dedicated international service engineering team. For KT9C deployments, our standard project support package includes on-site commissioning and operator training, a pre-positioned spare parts kit sized for the project duration, and a direct technical hotline to our factory engineering team. The satellite-primary remote monitoring module allows our service team to monitor all three engines and the compressor in real time and diagnose developing faults remotely. Standard consumables and wear parts are dispatched within 24 to 72 hours; major components within 7 to 20 business days. For large fleet deployments, a resident service engineer can be arranged for the duration of the project campaign.
Inquiry & After-Sales Support
For technical consultations, project-specific quotations, fleet planning, or spare parts inquiries, please contact our international sales engineering team. To receive the most accurate and timely proposal, please provide the following information:
- Target hole diameter and maximum required depth
- Rock type, estimated UCS (MPa), and geological profile complexity
- Required daily production output (meters per shift or holes per day)
- Site location, elevation, climate conditions, and cellular coverage availability
- Applicable operator protection and HSE regulatory requirements
- Number of rigs required, project duration, and preferred service package level
- Whether open-station (KT9C) or enclosed-cabin (KT9H) configuration is preferred
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