DM20 500mm Core Drilling Motor | AGP Tools
AGP DM20: High-efficiency 500mm wet diamond core drilling motor with 17-speed controller, water-cooled PMSM, and single phase operation for contractors.
Core Drilling Up to Ø500 ㎜
DM20
This is a 500 ㎜ capacity, rig-mounted wet diamond core drilling motor. The high frequency, water-cooled, permanent magnet synchronous motor provides unprecedented power output efficiency on single phase supply for outstanding performance with large diameters 102 ㎜ (4") up to 500 ㎜ (20"). The 17-speed integrated controller allows a wide speed range with full torque available at every speed.
100% Taiwan Engineering Excellence, Proven Worldwide
With more than 30 years of R&D and manufacturing experience since 1989, AGP operates a fully integrated development and production center in Taiwan, supported by AGP Europe in Belgium for regional service and distribution. We provide comprehensive ODM support, including application testing, technical training, product certification (CE, CB, CSA, and more), and marketing assistance. Our competitive strengths include 100% Taiwan-based design, engineering, and manufacturing—ensuring consistent quality and rapid development cycles.
With deep expertise in customized motor design and application-specific engineering, AGP supports various industries by delivering tailored solutions and technical consulting. Our DEKRA-certified laboratory and rigorous internal and external testing processes ensure compliance with international safety and performance standards.
Every AGP tool is built for high power, precision, durability, user safety, and ease of operation—engineered to perform reliably in the most demanding jobsite environments.
Technical Specification
| Model | DM20 |
|---|---|
| Power Input | 3700 W / 16A |
| Power Output | 3.3 kW (4.4 hp) |
| Voltage, Frequency | 1φ~ 220-240 V / 100-120 V, 50-60 Hz |
| Rated Load Speeds* | 220-540 min-1 |
| Drilling Capacity | Ø102 - 500 mm (4" - 20") |
| Gear Oil Type | 80W-90 |
| Gear Oil Capacity | 400 ml |
| Spindle Thread | 1-1/4" UNC male |
| Insulation Class | Class 1 With PRCD |
| Ingress Protection Class | IP55 |
| Weight | 16.7 kg (36.7 lb) |
Standard Accessories
- DM20 High-Frequency Brushless
- Diamond Core Drilling Motor
Optional Accessories
- 40mm Extension Spacer Kit
- Mounting Plate (AGP drill stands only)
- Modular Extension Spacers (AGP drill stands only)
Key Features
High Efficiency PMSM Motor
Water-cooled, high frequency PMSM motor has the highest output efficiency of any single phase coring motor on the market at 90%. Outstanding performance with large diameters up to 500 mm.
Runs Directly on 230 V single phase
High Frequency Converter is integrated into the unit, so you can just plug it into the 230 V single phase supply and start drilling!
Ferro-Fix Rebar Assist Button
The Ferro-Fix rebar assist mode makes it much easier to handle embedded steel while drilling. When rebar is encountered, press the Ferro-Fix button, once the steel is passed, press the button again to resume normal drilling mode.
Easy to Use Operator Interface
LED display gives bit diameter, as well as mode display, service indicator, hours counter, and error codes. The separate LED Load Indicator gives reliable information on load and thermal conditions.
Bit Threading Button
The Bit Threading function makes threading on large bits much easier. Simply align the spindle with the bit, press the button once, and it will automatically rotate at low speed to thread the bit on. Press the button once again to stop.
Electronic Speed Selection
17 Speed settings are easy to select and can be adjusted on the fly. Device keeps memory of the most recent speed setting whenever it's plugged in.
Diameter Display in both mm and Inches
The diameter display can be easily switched between inches and millimeters by simply pushing and holding the rebar assist button.
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How can you achieve maximum drilling efficiency while handling large-diameter cores up to 500mm on standard single-phase power supply?
The AGP DM20 delivers industry-leading 90% output efficiency with its water-cooled, high-frequency PMSM motor, designed specifically for large-diameter drilling operations. Operating directly on 230V single-phase supply, the DM20 eliminates the need for external converters while providing 3.3kW of consistent power output. The 17-speed electronic controller with memory function enables precise speed selection for optimal performance across all drilling diameters from 102mm to 500mm. Contact AGP today to discover how the DM20 can increase your jobsite productivity and reduce equipment downtime.
AGP's 30+ years of R&D and manufacturing expertise is reflected in the DM20's advanced operator interface and specialized features designed for drilling operations. The Ferro-Fix rebar assist button simplifies handling of embedded steel, while the bit threading function automates large bit installation. An LED display provides real-time information on bit diameter (in mm or inches), load conditions, service indicators, and error codes. As a Taiwan-designed and manufactured solution backed by DEKRA-certified testing and CE/CB/CSA certifications, the DM20 represents AGP's commitment to delivering -grade power tools that combine innovation, performance, and reliability for global contractors and equipment distributors seeking customized ODM solutions.
OUR STRENGTHS
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Engineered & Made in Taiwan
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