

In the field of mining, water well drilling and foundation construction, DTH drilling machine (submerged hole drilling machine) has become one of the irreplaceable drilling equipments with high efficiency and strong penetration. With the escalating application demand, DTH machine price has become the core concern of many engineering contractors and equipment purchasers.
Parameters of Down Hole Drilling Rig Core
In our exchanges with customers, we found that the most concerned about the purchase of DTH boring machine is not the single price, but the matching degree between price and performance. Take YG’s newly launched YG412 and YG420B drilling rigs for example, their main parameters are as follows:
Model | YG412 | YG420B |
Drilling diameter(mm) | 50~203 | 50~150 |
Rock hardness | f=6~20 | f=6~20 |
Drilling depth (m) | 30 | 40 |
Walking speed(km/h) | 2.5 | 2.5 |
Gradeability | 30° | 30° |
Power type | Diesel | Diesel |
Fuel tank volume(L) | 85 | 85 |
Hydraulic oil tank volume(L) | 188 | 188 |
Weight(Kg) | 6300 | 6300 |
Dimension(mm) | 6600*2110*2500 | 6600*2110*2500 |
Diesel model | Yuchai | Yuchai |
Diesel power(Kw) | 58 | 58 |
These configurations belong to the middle and high end level among similar DTH drilling rigs, which can take into account the speed, stability and fuel economy, and are widely used in pre-fracture holes in mines, water wells, geothermal drilling and other working conditions.


Influencing Factors of DTH Machine Price
- Model and Configuration: Hole diameter range, power system, automation degree directly determines the price.
- Construction Scenarios Adaptability: for example, geological hardness f-value between 6 ~ 20 rock layers, need to choose high-power hammer and strengthen the drill pipe.
- Brand and Service Ability: High-quality brands not only have stable equipment, but also have better after-sales protection.
Generally speaking, if you need to work all year round, it is recommended to choose the DTH drilling machine with mature supporting parts and convenient maintenance instead of pursuing the low price.


Suggestions for Operation and Daily Maintenance
In our cooperation with construction companies, we have found that the life of the equipment is positively correlated with the frequency of maintenance. The following are common maintenance recommendations:
- Daily Inspection: check the hydraulic oil level, fuel sufficiency, tightness of connecting bolts
- Weekly Maintenance: clean up the chuck sediment, check the wear of the kawa, lubricate the rotating bearings
- Monthly Maintenance: replace the filter element, check the hydraulic pipeline, test the hammer performance
In addition, the operator should be familiar with the whole machine operation manual, ensure that the equipment is started on a level and solid ground before construction, and strictly prohibit overloading or illegal operation during operation.
YG–Professional DTH Drilling Rig Manufacturer
As a leading supplier of DTH drilling rigs in China, YG Machinery is committed to providing customers with cost-effective solutions. We not only provide standard models, but also can make non-standard customization according to the stratum, hole diameter and construction method, to ensure that every customer can use it smoothly and efficiently.YG related products are recommended: small water well drilling rigs, fully hydraulic core drilling rigs, mining drilling rigs, trailer drilling rigs and so on. Contact us to know more details now! [WhatsApp/WeChat/Tel/Skype]: +86 13837115193.