The rotary drilling equipment features mature technology and strong stratum adaptability. It can greatly improve construction efficiency, reduce workers’ labor intensity, and perfectly meet the high-standard requirements of modern pile foundation projects.【WhatsApp/WeChat/Phone】+86 13837122632
YG Best-Selling Rotary Drilling Rig for Sale Parameters
| Item | Unit | Data | |
| Max. Drilling Diameter | mm | 1800 | |
| Max. Drilling Depth | m | 30 | |
| Engine | Model | / | Cummins, GBT5.9-C210 |
| Rated Power | kW | 154KW, 2200r/min | |
| Rotary Head | Max. output torque | kN .m | 100 |
| Rotary speed | r/min | 17-40 | |
| Oil Cylinder | Max.pull-down piston push | kN | 110 |
| Max.pull-down piston pull | kN | 100 | |
| Max.pull-down piston stroke | mm | 2000 | |
| Main Winch | Max.pulling force | kN | 100 |
| Max. single-rope speed | m/min | 70 | |
| Diameter of the steel wire rope | mm | 28 | |
| Auxiliary Winch | Max.pulling force | kN | 60 |
| Max. single-rope speed | m/min | 54 | |
| Diameter of the steel wire rope | mm | 16 | |
| Traveling | Max. traveling speed | km/h | 2.6 |
| Min.ground clearance | mm | 340 | |
| Approach angle | ° | 21 | |
| Departure angle | ° | 18 | |
| Max.grade ability | % | 30 | |
| Overall Weight | t | 28 | |
| Dimension | Transportation condition (L×WH) | mm | 11000×2600×3400 |
Rotary Drilling Equipment vs. Percussion Drill / Positive & Negative Circulation Drill
How to select the most suitable pile foundation equipment for a project? The comparison of three mainstream technologies is crucial:
Percussion Drill: Suitable for hard rock formations, but it has slow construction speed, high vibration and noise, and causes severe disturbance to surrounding soil layers, which limits its application in urban construction.
Positive/Negative Circulation Drill: Adopts mud wall protection and circulating slag discharge, suitable for loose and easy-to-collapse formations. However, it has high mud treatment costs and average hole-forming efficiency.
Rotary Drilling Equipment: Adopts dry or non-circulating mud static soil sampling, with the highest hole-forming efficiency (usually 3-5 times that of other methods). It features low vibration and noise, and excavated soil can be directly transported out, making the construction site cleaner and more environmentally friendly. For modern projects pursuing schedule, environmental protection and comprehensive cost-effectiveness, it is a better solution.
4 Key Operation Points of Rotary Drilling Equipment
Efficient use of rotary drilling equipment is inseparable from standardized operations:
- Positioning and Straightening: Accurately recheck the pile position before starting construction. Use the equipment level and mast adjustment system to ensure the verticality of the drill pipe, which is the first step to guarantee the quality of the pile hole.
- Staged Drilling: According to the geological report, adopt the “low-speed and high-torque” mode for steady drilling in hard formations or hole reaming sections; switch to the “high-speed and low-torque” mode in soft soil layers to improve efficiency.
- Drill Bucket Selection and Operation: Select drill buckets with different drill teeth and hopper doors according to the soil layer (clay, sand, gravel). Slow down the lifting speed appropriately when pulling the drill to prevent hole wall instability caused by vacuum suction.
- Mud Management and Hole Cleaning: In easy-to-collapse formations, it is necessary to prepare high-quality wall protection mud. After hole completion, thorough hole cleaning must be carried out to ensure that the thickness of sediment at the bottom of the hole meets the specifications and guarantee the bearing capacity of the pile foundation.
Rotary Drilling Equipment Accessories Selection Guide
The performance of an excellent rotary boring machine needs to be achieved with proper accessories. When purchasing accessories, there are two key points to consider:
- Drill Bucket Selection: This is the key to determining soil sampling efficiency. For clay layers, drill buckets with sparse drill teeth and ventilation windows should be selected to prevent bit balling; for sand layers, drill buckets with good sealing performance and reinforced side walls are required; for cobble and gravel layers, drill buckets equipped with high-strength alloy cutting teeth are a must.
- Drill Pipe Selection: Choose according to hole depth and geology. Friction drill pipes are suitable for shallow and soft formations with economical prices; interlocking drill pipes are locked by mechanical keys, which can provide greater downward pressure and are suitable for hard rock deep hole construction. For a fully functional rotary drilling rig for sale, equipping with multiple types of drill buckets and drill pipes is an essential condition for coping with complex formations.
Rotary Boring Machine Common Fault Diagnosis and Quick Solutions
Mastering the solutions to the following common faults can minimize downtime:
- Disorder of Main Winch Steel Wire Rope: Usually caused by the failure of the “bottom contact protection” function or improper operation. Stop lowering immediately, manually rearrange the steel wire rope neatly on the drum, and check the limit sensor.
- Insufficient Torque or Abnormal Noise of Power Head: First, check whether the pressure and flow rate of the hydraulic system meet the standards. If the hydraulic system is normal, the internal damage of the gearbox or the wear of the drill pipe key may be the cause, which requires professional maintenance.
- Mast Deviation or Difficulty in Straightening: Check whether the pin shaft of the luffing cylinder is stuck and whether the angle sensor is calibrated. Regularly lubricate each hinge point during daily maintenance.
- Slow and Weak Movement of the Whole Machine: Prioritize checking whether the engine speed and pilot pressure are normal, then inspect the displacement control of the hydraulic main pump and whether the system filter element is clogged.
Hydraulic Rotary Piling Rig Manufacturer
Selecting a suitable hydraulic rotary piling rig is a key step for project success. Whether you need to consult detailed parameters of existing models such as YG-30, discuss construction techniques for special formations, or seek reliable accessory support, our professional team is ready to provide you with one-on-one services. Let us lay a solid foundation for your next infrastructure project with an efficient rotary boring machine.【WhatsApp/WeChat/Phone】+86 13837122632
