Rotary drilling rigs are specialized machines used in the construction of deep foundations, such as piles for buildings, bridges, and other large structures. They are classified based on size, torque capacity, engine power, and drilling depth. Below are the main types of rotary drilling rigs, based on their specifications and primary applications:

Small rotary drilling rig
The torque of a small drilling rig is 100kN-m, the engine power is 170kW, the drilling diameter is 500~1000mm, the depth is about 40m, and the whole machine weighs about 40t.
The drilling diameter is 500~1000mm, about 40m deep, and the whole machine weighs about 40t.
Small drilling rigs are mainly used in the following aspects of construction.
(1)Slope protection pile construction for various buildings.
(2)Construction of piles for load-bearing structure of buildings.
(3)Pile construction within 1m diameter in urban renovation projects.
(2)Pile construction for the load-bearing structure of the building part.
Medium-sized rotary drilling rig
The torque of a medium-sized rotary drilling rig is 180kN-m, the engine power is 200 kW, and the drilling diameter is 800~800kNm.
The drilling diameter is 800~1800mm, the depth is about 60m, and the weight of the whole machine is about 65t.
Medium-sized drilling rigs are mainly used in the following aspects of construction.
(1) Bridge pile construction for various transportation facilities.
(2)Construction of load-bearing structure piles for large-scale and harbor terminal projects.
(3) Bridge pile construction for viaducts in the city.
Large rotary drilling rig
The large drilling rig’s torque is 240kN-m, its engine power is 300 kW, and its drilling diameter is 10001000kN-m, also with 300 kW engine power.
The drilling diameter is 1000~2500mm, about 80m deep, and the weight of the whole machine is more than 100t.
Large drilling rigs are mainly used in the following aspects of construction.
(1) Various highway projects, railroad bridge projects, and large bridge pile construction.
(2) Other large-scale construction projects related to the special structural aspects of the load-bearing foundation pile
Construction”.
Small rigs are used for lighter construction and urban projects, typically involving smaller pile diameters and depths.
Medium rigs are suited for larger urban construction projects, including bridges and heavy buildings, requiring deeper and wider piles.
Large rigs are employed in massive infrastructure projects such as highways, railways, and large industrial foundations, capable of handling the largest and deepest pile requirements.
Each type of rig is designed to meet specific construction needs based on torque, power, depth, and diameter requirements. If you have any inquiries about Drilling Rig Undercarriage Parts, such as track shoes, track chain assembly, track roller, carrier roller, sprocket, and idler. Please feel free to contact us. Our Alibaba: https://ytrtzg.en.alibaba.com/?spm=a2700.shop_cp.88.12