Rock Drill Buying Guidance

Rock Drill Buying Guidance


Although underground stone drilling is comparable to surface cutting, significant differences must be taken into account. When selecting your drill rigs, these distinctions may be necessary. There are many considerations to be made when you buy rock drill and we will discuss the same.

Distinctive Goals

Since you don’t want to delay the extraction phase of the process, underground drilling entails definition digging, and the emphasis is on productivity and efficiency. Obtaining the highest level of penetration is crucial, given this goal. A solid bit with good rotational speeds and excellent rock drill capabilities might offer higher penetration.

Comparing Known and Unknown Ground

Since most quarries have existed for a while, it will be clear what kind of rock drill is present. The crew will have bored several shafts, so there won’t be many shocks, and they’ll understand what to expect. Instead of limiting their options to core pieces that are good for a wider variety of soil, drilling companies will be capable of focusing on parts that have been created for certain earth types, like the Idol series. Furthermore, since you know the kind of soil, you could choose a higher cap to decrease the frequency with which you must replace the piece.

Hole Depths In Bores

Most of the time, while drilling below, the trenches are not as large, say 200 meters, as opposed to 1,000 meters. Due to this, drilling companies may decide to use cutting and drilling techniques rather than cable drilling techniques. A higher puncture rate may be achieved using core bits with thinner kerfs than those used in hole machining.

Borehole Orientation

The orientation of the borehole during subterranean drilling might be downward, upward, or inclined. Because of these multiple directions, you might need to use a different vector for your whole lot. When digging an upward hole under certain circumstances, you might need to switch to a different matrix than you would usually employ for a downhole and search one sequence upward.

For instance, the weight of the shaft would put extra pressure on the bore if you used a Hero 8 to penetrate a borehole. That line weight would go while you are bored in an uphole, and you would then need to make up for it by using a softer material from a higher class, like a Hero 11. A higher number of core pieces have weaker matrices, facilitating easier diamond exposure. This implies that the core bit maintains its sharpness without the necessary “weight on bit” compression.

Reduced-Power Drill Machines

Overhead cranes are often smaller and less efficient in subterranean drilling because there is typically less room for them. A central bit with a weaker material is necessary when cutting with a low-powered mine site, especially an up bore. As previously noted, the softer matrix contains easily detected stones, allowing the central bit to maintain its edge, perform effectively, and achieve a good speed of penetration even when utilizing machinery that cannot generate the necessary feed force.

How to buy a rock drill properly?

If you must buy a rock drill, you should complete the five rig systems’ rig sizing (Hoisting, Circulating, Power, Rotary, and Well Control). Determine the region’s rig accessibility. Invite bids, then choose the rig based on price, capability, and accessibility (use a Weighted Decision Matrix)


We can all agree that selecting suitable drill rigs is crucial since it will significantly affect how well you drill. When digging below, there are additional essential aspects besides the type of soil. Other helpful advice for preparing underneath can be obtained from our technical team, such as the recommendation always to try to begin a hole below with a used center bit. Digging a hole below might harm bits, so select one that has been used rather than a new piece.

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