Jining Tongzhao Machinery Co., Ltd. is one of the most reliable manufacturers and suppliers of crawler-mounted dual-arm tunnel rock bolting rig in China. If you're going to wholesale durable crawler-mounted dual-arm tunnel rock bolting rig made in China, welcome to get pricelist from our factory. All customized products are with high quality and competitive price.
Crawler-mounted dual-arm tunnel drilling rig, also known as a dual-arm rock drilling jumbo, is fully automatic hydraulic drilling equipment specially developed for underground projects such as tunnels, mine roadways, hydraulic tunnels, and underground utility corridors. The equipment features crawler movement and synchronized operation of dual drilling. With its compact body and strong maneuverability, it is particularly suitable for construction in mountain tunnels, narrow caverns, and complex muddy or rocky sites. It is widely used in highway railway tunnel excavation, blasting drilling, and rock bolt support drilling.
| 13-15 meters double-arm tunnel parameter table | |
| Vertical Height (m) | 13–15 (including 4 m stroke slide frame) |
| Diesel Engine Model | Four‑cylinder Yuchai |
| Engine Power / Speed | 75–130 kW / 2600 r/min |
| Electric Motor | 55 kW |
| Motor Pump | K3V90‑45 |
| Pump Head | 120 |
| Upper Swing | 17‑inch 360° |
| Lower Swing | 360° rotation |
| Lower Turntable (m) | 1 |
| Operation Mode | Dual lower operation, lower cab operation, and blue frame remote control operation |
| Support Arm | 2‑section single boom |
| Working Platform Arm | 2‑section single boom |
| Power Head Type | Dual hydraulic power head / hydraulic rock drill (optional) |
| Drilling Angle | Drills horizontal / inclined / vertical holes |
| Chain‑type Slide Frame | 4 m per drill |
| Pressurizing Motor | 1000 |
| Drilling Diameter (mm) | 42–89 |
| Travel Motor | TM22 |
| Track (mm) | 4000–2600 |
| Track Shoe Width | 400 |
| Engine Oil Pump | High‑pressure pump 63/32/32 |
| Outriggers | Four fixed hydraulic outriggers |
| Enclosure | Full enclosure (including engine cover) |
| Oil Pressure (MPa) | 20 |
| Radiator | Heavy‑duty dual fan FLJ‑136 Jintai |
II. Core Product Advantages
1. Crawler-mounted movement with superior underground maneuverability Equipped with heavy-duty engineering crawler chassis, it offers strong traction and excellent climbing ability, enabling stable movement on muddy, slippery, rocky, and uneven tunnel floors. The compact body size and flexible make it suitable for small-section tunnel construction, allowing for easy relocation without the need for trailer assistance.
2. Independent operation of dual drilling arms, doubling construction efficiency Equ with two independent hydraulic drilling arms that can drill simultaneously without interference, doubling the efficiency compared to single-arm drilling rigs. The drilling arms can tilt up and down, swing left and, and operate in parallel from multiple angles, precisely drilling face blasting holes, sidewall rock bolt holes, and support grouting holes. This effectively reduces over-excavation and underexcavation in tunnels, ensuring a better tunnel profile.
3. Fully hydraulic imported configuration, stable performance and low failure rate The core hydraulic system uses components from well- brands, providing sufficient power and stable impact. The equipment features built-in anti-stuck bit, anti-air drilling, and automatic protection functions, effectively protecting the drill rods and bits significantly reducing consumable wear. The machine body is made of thickened steel structure, wear-resistant and durable, suitable for long-term high-intensity hard rock drilling operations.
4 Simple operation, saving time and labor Fully hydraulic pilot control with lightweight and sensitive joysticks allows a single operator to complete all drilling tasks, offering a quick learning curve and low costs. Compared to traditional manual pneumatic drilling, it significantly saves labor, improves construction safety, and ensures more stable and standardized underground operations.
5. Multi-functional customization, to various working conditions Supports options for pure diesel or diesel-electric dual power, making it more energy-efficient for long-term underground operations. It can be equipped with wireless remote, high-altitude working platforms, and specialized hard-rock drilling mechanisms, adapting to high-hardness rocks, high-altitude mountain areas, and tunnels of different cross-sections, supporting customized engineering modifications.
III. Main Application Scenarios - Blasting hole drilling for highway and railway tunnel excavation - Construction of rock bolt, cable bolt, and grouting holes in tunnel surrounding rock - Underground roadway excavation and support drilling in mines - Drilling operations for hydraulic water diversion tunnels and mountain tunnels - Drilling and support for municipal underground corridors and underground projects
IV. After-sales Guarantee The core components of the entire machine come with a one-year warranty, and a full set of consumable parts such as bits, drill rods, and impactors is continuously supplied. We provide complete operation manuals and instructional videos, supporting remote technical guidance and troubleshooting. We follow up on equipment usage and aftersales issues throughout the process, ensuring worry-free construction for customers.
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