A rotary rig machine (also known as a rotary drilling rig) is construction equipment used for drilling pile foundations in building, bridge, and infrastructure projects. It uses a powerful rotary head to turn a drilling tool that cuts through soil and rock formations. The YG series drills holes up to 1.5 meters in diameter and reaches depths of 25 to 35 meters. Common applications include bridge pile foundations, high-rise building support, subway station retaining walls, and urban infrastructure projects.
The main advantage of a rotary rig machine is its efficiency and compact design. These machines work in various soil types including sand, clay, silt, gravel, and weathered rock. The YG series is specifically designed for urban construction sites where space is limited. If you need a reliable foundation drilling solution for your project, contact YG, a professional rotary rig manufacturer, for more information on suitable models.
YG Rotary Rig Machine Specifications
YG offers three rotary rig machine models in the YG series. Each model provides specific capabilities in drilling depth, torque output, and overall weight.
| Model | YG-525 | YG-530 | YG-535 |
| Max. Drilling Diameter | 1500mm | 1500mm | 1500mm |
| Max. Drilling Depth | 25m | 30m | 35m |
| Rated Power | 156/2400r/min | 156/2000r/min | 156/2200r/min |
| Max. output torque | 110kN·m | 110kN·m | 120kN·m |
| Rotary speed | 7-33r/min | 17-50r/min | 17-45r/min |
| Max. pull-down piston push | 100kN | 100kN | 100kN |
| Max. pull-down piston pull | 120kN | 100kN | 100kN |
| Max. traveling speed | 3km/h | 2.6km/h | 2.6km/h |
| Min. ground clearance | 340mm | 340mm | 340mm |
| Approach angle | 21° | 21° | 21° |
| Overall Drilling Weight | 26t | 30t | 35t |
These specifications show that the rotary rig machine YG series can handle a variety of foundation projects. The YG-525 is the lightest model at 26 tons, making it ideal for sites with weight restrictions. The YG-535 offers the deepest drilling at 35 meters with 120kN·m torque for tougher ground conditions.
How the Rotary Rig Machine Works
The rotary rig machine operates through a straightforward mechanism. The 156kW engine drives a hydraulic system that powers the rotary head.
Core Operating Principles
- Rotation: The rotary head spins the drill pipe at 7-50 r/min. Torque ranges from 110-120kN·m to cut through ground materials.
- Down Pressure: Hydraulic cylinders apply 100kN of push force. This keeps the drilling tool in contact with the ground.
- Drilling Tool: The tool at the bottom collects soil and rock cuttings. Common tools include auger buckets and core barrels.
- Hoisting: The winch lifts the drill pipe and tool out of the hole. The tool is then emptied and lowered again.
The drilling cycle repeats until the design depth is reached. A rotary rig machine can drill a pile in hours rather than the days required by older methods.
Hole Diameter and Depth Capabilities
The YG series rotary rig machine provides consistent 1.5-meter drilling diameter across all three models, with depth options to match different project needs.
Drilling Diameter
All YG models drill holes up to 1500mm (1.5 meters) in diameter. This is the standard size for many bridge piles, building foundations, and urban retaining walls. A 1.5-meter diameter pile provides strong load-bearing capacity for medium to large structures.
Depth Capabilities by Model
- YG-525: 25 meters depth. Suitable for shallow foundation projects and light structures.
- YG-530: 30 meters depth. Fits most bridge piers and medium-rise buildings.
- YG-535: 35 meters depth. Can reach deeper load-bearing layers for taller structures.
The depth you need depends on the building design and soil conditions. A rotary rig machine with 35-meter capacity like the YG-535 can reach stable soil layers in most urban environments.
Applications for YG Series Rotary Rigs
The rotary rig machine YG series serves many foundation applications.
Common Applications
- Bridge Pile Foundations: 1.5-meter diameter piles for highway bridges and railway structures.
- High-Rise Building Foundations: Support piles for medium to tall buildings.
- Urban Retaining Walls: Piles for subway stations, underground parking, and basement walls.
- Industrial Foundations: Support for heavy equipment and factory structures.
- Slope Stabilization: Retaining piles for hillside construction projects.
The compact design of the YG series makes it suitable for urban construction sites where space is limited. The 1.5-meter drilling diameter covers most common pile requirements.
International Customer Application Cases
YG rotary rig machines have been successfully deployed on foundation projects worldwide.
Case 1: Saudi Arabia – Bridge Foundation Project
A Saudi contractor faced extreme desert conditions with loose sand, gravel, and 45°C temperatures. The YG-530 with 110kN·m torque was selected. Its enhanced cooling package prevented overheating. Results showed stable performance, reduced fuel consumption per meter, and continuous operation without breakdowns. The project finished ahead of schedule.
Customer Feedback:
“The YG rig handled the heat and sand better than our previous machines. No overheating issues at all. We are planning to buy two more units for our upcoming projects.”
Case 2: Zambia – Commercial Building Piling
A Zambian contractor struggled with slow drilling on a 120-pile project. Each 8-meter hole took 90 minutes using his old equipment. The YG-525 reduced that to under 40 minutes per hole. Hole collapse was eliminated. The project was completed on time, and the contractor recovered his investment within the first three projects.
Customer Feedback:
“Drilling time dropped by more than half. The YG-525 is easy to operate and maintain. The parts support from YG has been excellent. I would recommend this machine to any contractor in the region.”
FAQ – Frequently Asked Questions
1. What is the maximum drilling diameter for the YG series rotary rig?
All YG models drill up to 1500mm (1.5 meters) in diameter. This is the standard size for bridge piles and building foundations.
2. How deep can the YG series drill?
Depth depends on the model. The YG-525 drills 25m, the YG-530 drills 30m, and the YG-535 drills 35m.
3. What torque do these machines provide?
The YG-525 and YG-530 provide 110kN·m torque. The YG-535 provides 120kN·m for tougher ground conditions.
4. What power source does the machine use?
The YG series uses a 156kW diesel engine. This provides power for drilling, travel, and hydraulic systems.
5. How is the machine transported between sites?
The machine moves on its crawler tracks on site. For road transport, it is loaded onto a low-bed trailer. The lightest model weighs 26 tons.
YG – Your Professional Rotary Rig Machine Manufacturer
YG is a professional manufacturer of rotary rig machine equipment. Our YG series offers three models with 1.5-meter drilling diameter and 25-35 meter depth capacity. Machines are built with reliable 156kW engines and provide 110-120kN·m torque for consistent performance in various ground conditions. YG provides complete support including product selection, spare parts, and technical assistance. If you need a dependable rotary rig machine for your foundation drilling projects, contact YG today.