Single Boom Face Drill Rigs

Jining Tongzhao Machinery Co., Ltd. is one of the most reliable manufacturers and suppliers of single boom face drill rigs in China. If you're going to wholesale durable single boom face drill rigs made in China, welcome to get pricelist from our factory. All customized products are with high quality and competitive price.

At certain tunneling faces, rock hardness is exceptionally high (f ≥ 15); under such conditions, standard drilling rigs either fail to penetrate the rock or suffer from severe bit wear, resulting in prohibitively high operating costs. This single-boom tunneling jumbo tackles hard-rock environments by leveraging exceptional stability and high thrust to ensure maximum operational efficiency.

The Key to Hard-Rock Drilling: Stability and Power

 

Drilling through hard rock is not about sheer speed, but rather about stability. This machine generates a thrust force exceeding 18 kN, allowing it to firmly press the drill bit against the rock face. This prevents bit bouncing and premature wear-issues commonly caused by insufficient thrust. A powerful 55 kW main motor supplies ample hydraulic power, while the rock drill delivers high impact energy; this ensures that each individual strike effectively fractures the rock, rather than merely grinding it down.

Anti-Jamming System: Saving Drill Rods-and Headaches

 

In heavily jointed rock formations, drill rod jamming is a frequent occurrence. This machine is equipped with an automatic anti-jamming feature. When the system detects excessive rotational resistance, it automatically reduces the feed speed or temporarily halts the percussion action, preventing the drill rod from becoming "locked" within the borehole. This feature significantly reduces drill rod breakage and wear, while also eliminating the time-consuming hassle of manually resolving jammed rods.

High Stability Delivered by a Robust Chassis

 

Weighing approximately 10 tons, this unit classifies as a medium-sized tunneling jumbo. This substantial weight proves to be a distinct advantage during hard-rock drilling operations: the chassis remains exceptionally stable, effectively absorbing counter-torque forces. Consequently, the machine remains rock-steady-even when drilling deep holes-thereby guaranteeing the precise perpendicularity of each borehole. Four hydraulic outriggers (or stabilizing jacks) firmly anchor the machine to the ground, ensuring that every ounce of force is channeled directly into the drill bit.

Superior Deep-Hole Drilling Capabilities

 

The feed beam is available in two lengths-3.7 meters or 4.3 meters-allowing for a maximum drilling depth of up to 4 meters. For deep-hole tunneling and blasting applications, the extended feed stroke minimizes the need for rod coupling, thereby maximizing the proportion of actual drilling time within the operational cycle. Furthermore, the drill boom's wide range of pitch and yaw motion enables the machine to effortlessly drill cut holes and perimeter holes at virtually any required angle.

Success in hard-rock tunneling ultimately hinges on two critical factors: equipment durability and the precise matching of technical specifications to the task at hand. This machine's high thrust, anti-jamming design, and high-power power head are all optimized for hard rock conditions. It enables smoother drilling in hard rock, reduces drilling tool costs, and shortens the overall excavation cycle time.

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