Wet Diamond Coring | AGP Professional Power Tools
This is a 500 mm 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 72mm (2-3/4) up to 500 mm (20"). The 17-speed integrated controller allows a wide speed range with full torque available at every speed. Choose AGP for Taiwan-made professional power tools, motor-driven equipment, and OEM ODM manufacturing support.
Wet Diamond Coring
DM20
This is a 500 mm 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 72mm (2-3/4) up to 500 mm (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 OEM / 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 manufacturingâensuring 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 operationâengineered 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, 50-60 Hz |
| Rated Load Speeds* | 220-540 min-1 |
| Drilling Capacity | Ø 500 mm (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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Wet Diamond Coring Professional Power Tool Solution
AGP supplies Wet Diamond Coring as part of a professional power tool lineup built around motor performance, practical field use, and Taiwan manufacturing quality. This product supports buyers who need reliable equipment for demanding jobsite or industrial applications.
AGP product development starts from real application needs, including load, torque, speed, voltage, cooling, ergonomics, durability, and regional working habits. This engineering approach helps buyers source tools that perform consistently instead of relying only on generic specifications.
For distributors, importers, and OEM ODM customers, AGP supports Wet Diamond Coring with traceable production, certification knowledge, technical cooperation, and stable export service from Taiwan.
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