Description:
The Dongcheng DZJ20 720W Electric Impact Drill is a professional corded drilling machine designed for construction, masonry drilling, metalworking, woodworking, electrical installation and general industrial maintenance applications.
Powered by a 720W electric motor, the DZJ20 provides drilling performance for a wide range of construction and workshop tasks.
One of its key features is the 2-Speed Mechanical Speed Control System, offering separate low-speed and high-speed operating ranges for different drilling applications.
In First Gear (Low Speed), the drill operates at 0–1,150 RPM with an impact frequency of 0–23,000 BPM. This setting supports drilling applications requiring lower rotational speed.
In Second Gear (High Speed), the machine delivers 0–2,800 RPM with an impact frequency of 0–56,000 BPM, providing higher rotational speed and impact frequency for suitable drilling tasks.
The DZJ20 features Adjustable Speed Control, allowing operators to regulate rotational speed within the selected gear range.
Its Forward and Reverse Rotation Function enables convenient directional control during drilling and compatible fastening operations.
According to Dongcheng’s official specifications, the drill supports 20mm maximum concrete drilling capacity.
The drilling capacity for steel is 13mm in first gear and 8mm in second gear, providing material-specific performance across its two mechanical speed settings.
For woodworking applications, the machine offers 40mm maximum drilling capacity in first gear and 25mm in second gear, making it suitable for professional carpentry and timber-drilling requirements.
The Rubber-Covered Handle provides a comfortable gripping surface during drilling operations.
Dongcheng also includes an Auxiliary Handle for additional support and controlled handling during demanding applications.
The supplied Depth Gauge assists with maintaining consistent drilling depths when installing anchors, brackets and other construction fittings.
With a 2.4kg net weight, the DZJ20 provides a robust handheld configuration suitable for construction sites, engineering workshops and maintenance departments.
The Dongcheng DZJ20 720W Electric Impact Drill is ideal for construction contractors, electricians, plumbers, carpenters, mechanical workshops and industrial maintenance professionals requiring a versatile two-speed drilling machine.
Technical Specifications:
| Specification | Details |
|---|---|
| Brand | Dongcheng |
| Model No. | DZJ20 |
| Product Type | Electric Impact Drill |
| Rated Power Input | 720W |
| Mechanical Speed Settings | 2-Speed |
| First Gear No-Load Speed | 0–1,150 RPM |
| Second Gear No-Load Speed | 0–2,800 RPM |
| First Gear Impact Frequency | 0–23,000 BPM |
| Second Gear Impact Frequency | 0–56,000 BPM |
| Maximum Steel Drilling – 1st Gear | Ø13mm |
| Maximum Steel Drilling – 2nd Gear | Ø8mm |
| Maximum Concrete Drilling | Ø20mm |
| Maximum Wood Drilling – 1st Gear | Ø40mm |
| Maximum Wood Drilling – 2nd Gear | Ø25mm |
| Speed Control | Adjustable |
| Rotation | Forward & Reverse |
| Handle | Rubber-Covered |
| Net Weight | 2.4kg |
| Power Source | Corded Electric |
| Packaging | Colour Box |
Motor, Speed & Drilling Performance:
| Performance | 1st Gear | 2nd Gear |
|---|---|---|
| No-Load Speed | 0–1,150 RPM | 0–2,800 RPM |
| Impact Frequency | 0–23,000 BPM | 0–56,000 BPM |
| Steel Drilling Capacity | 13mm | 8mm |
| Concrete Drilling Capacity | 20mm | 20mm |
| Wood Drilling Capacity | 40mm | 25mm |
Included Items:
- 1 × Dongcheng DZJ20 720W Electric Impact Drill
- Auxiliary Handle
- Depth Gauge
- Chuck Wrench
- Carbon Brush
- Colour Box Packaging
Recommended Applications:
- Concrete drilling
- Masonry drilling
- Brick wall drilling
- Steel drilling
- Wood drilling
- Construction installations
- Wall-anchor installation
- Electrical fitting installation
- Plumbing installation
- Metal bracket installation
- Carpentry applications
- Furniture manufacturing
- Timber drilling
- Metal fabrication
- Mechanical workshops
- Industrial maintenance
- Equipment installation
- Building renovation
- General construction maintenance
- Professional workshop drilling
Key Features & Benefits:
720W Powerful Electric Motor:
Equipped with a 720W rated-input motor designed for professional drilling and impact-drilling applications.
2-Speed Mechanical Speed Control:
Features two mechanical gear settings for selecting a suitable speed range according to the application.
First Gear – 0–1,150 RPM:
Provides a lower rotational speed range for suitable drilling operations.
Second Gear – 0–2,800 RPM:
Offers higher rotational speed for compatible drilling applications.
23,000 BPM First Gear Impact Frequency:
Delivers up to 23,000 impacts per minute in the low-speed setting.
56,000 BPM Second Gear Impact Frequency:
Provides up to 56,000 impacts per minute in the high-speed setting.
Adjustable Speed Control:
Allows rotational speed to be adjusted within the selected mechanical gear range.
Forward & Reverse Rotation:
Enables convenient directional control during drilling and compatible fastening operations.
20mm Concrete Drilling Capacity:
Supports drilling in suitable concrete up to a maximum diameter of 20mm.
13mm Steel Drilling in First Gear:
Provides a maximum steel drilling capacity of 13mm in the low-speed setting.
8mm Steel Drilling in Second Gear:
Supports steel drilling up to 8mm in the high-speed setting.
40mm Wood Drilling in First Gear:
Offers a maximum wood drilling capacity of 40mm in the low-speed setting.
25mm Wood Drilling in Second Gear:
Provides a maximum wood drilling capacity of 25mm in the high-speed setting.
Rubber-Covered Handle:
Features a comfortable gripping surface for improved handling during drilling operations.
Auxiliary Handle:
Provides additional support and control during professional drilling tasks.
Depth Gauge:
Helps maintain consistent drilling depth during repeated installation work.
Construction Applications:
Suitable for appropriate concrete, masonry and general construction drilling tasks.
Metalworking Applications:
Supports drilling in steel and suitable fabricated metal components.
Woodworking Applications:
Useful for drilling timber, furniture components and other compatible wood materials.
Professional Workshop Applications:
Suitable for engineering workshops, mechanical maintenance and general industrial drilling requirements.
2.4kg Net Weight:
Features a professional handheld construction with a manufacturer-specified 2.4kg weight.
Corded Electric Operation:
Provides mains-powered operation for suitable workshop and construction applications.








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