High Quality hole drilling rig
Suitable for drilling medium-to-deep blast holes in open-pit projects across mining, quarrying, railways, transportation, water conservancy, construction materials, and military applications, delivering high-efficiency rock drilling. It is also widely used for drilling operations in anchor rod support, channel excavation, and sewer projects.
Product Introduction
P520B Crawler open-pit down-the-hole drilling rig a dual-motor rotary head and a multi-way valve with adjustable rotation speed, delivering a maximum rotation torque of 1950 N·m to meet the requirements for 76mm drill pipes and 130mm boreholes. The rotation speed can reach up to 150 rpm, satisfying some customers' demand for high-speed drilling in soft rock formations. Additionally, the 520B series comes standard with an engineering belt and plunger motor, enhancing its climbing capability and ensuring stable, reliable performance. This model represents the highest specification within its class.
This series of drill rigs is a cost-effective down-the-hole drill introduced by Kaizhan Machinery, featuring high specifications, comprehensive functionality, and a competitive market price. The machines have completed all necessary testing and are now in mass production.
Product Details
01. Drill Arm
The drill arm features an innovative design with convenient adjustment, significantly expanding the drilling range for low-level horizontal holes. Minimum horizontal hole height: 300mm.
02. Control Console
The new hydraulic system includes fast and slow advance gears, reducing auxiliary operation time and meeting diverse working conditions.
03. Dual Cycloid Motor Rotator
Equipped with a dual cycloid motor rotator, it delivers high rotational torque, high efficiency, and durability.
04. Travel Motor Crawler Frame
Utilizes Yacheng travel motors for strong climbing ability and low failure rate.
05. Air Filter
Features a three-stage filtration system: pre-filter, oil-bath air filter, and air filter, ensuring reliable operation of the diesel engine in high-dust environments.
06. Leveling Cylinders
Equipped with track-leveling cylinders, suitable for various terrain conditions to enhance overall machine stability.
Product Specifications
| Drill Rod Type | Ф76x3,000mm |
| Drilling Diameter | φ90-130mm |
| Maximum Working Torque | 2,200 N·m |
| Rotation Speed | 0-150 rpm |
| Thrust Force | 15 kN |
| Lifting Capacity | 25 kN |
| Propulsion Method | Hydraulic cylinder chain drive |
| Travel Speed | 2.5 km/h |
| Gradeability | 25 |
| Undercarriage Swing Angle | ±10° |
| Transport Dimensions (L x W x H) | 4,900 x 2,100 x 2,200 |
| Gross Weight | 4,500 kg / 4,250 kg |
Company Strength
Puhua Energy Equipment Technology (Shandong) Co., Ltd., founded in 2003 in Jining, China, is a leading high-tech enterprise specializing in the research, development, and manufacturing of geological exploration equipment, intelligent mining systems, and new energy solutions. With strong R&D strength and advanced production technology, Puhua provides high-performance drilling rigs, intelligent underground transportation equipment, and customized engineering solutions for mining projects worldwide.
The company collaborates with more than 30 major mining enterprises, including Shandong Energy, Yintai Gold, and Shandong Gold, and its products are exported to over 120 countries and regions. Certified under ISO9001 and supported by an overseas R&D center in Canada, Puhua’s equipment performs reliably across extreme environments—from high-altitude plateaus to dry desert regions. Known for its innovation, operational efficiency, and superior reliability, Puhua has earned a solid reputation as a trusted global partner in the energy and mining industries.
