Dongshong DZZ250 250mm 3800W Concrete Drill and Auger

The DZZ250 is a heavy-duty electric core drilling machine, engineered for professional tasks requiring large-diameter holes in reinforced concrete, rocks, and hard construction materials. It is characterized by its powerful motor and robust design, ensuring precision and safety during operation.

1. Technical Specifications

• Rated Power Input: 3800W (Ultra-powerful motor for heavy-duty applications).
• No-Load Speed: 580 RPM.
• Max. Drilling Capacity: Up to 250 mm diameter.
• Net Weight: 25.0 kg.

2. Key Features

1. Powerful Motor (3800W): Delivers immense torque to handle large drilling diameters in the toughest conditions.
2. Solid Guide Rail: Constructed from high-strength steel to ensure superior precision during drilling and prevent bit jamming.
3. Soft Start: This feature prevents sudden kickbacks upon activation, making it easier to accurately position the drill at the start.
4. Overload Protection: An automatic protection system that disengages or protects the machine when subjected to excessive workloads, extending motor life.
5. Earth Leakage Protection: Ensures user safety from electric shocks when using water during the drilling process.

3. Included Accessories

The machine comes with a set of essential accessories:

• Water pipe with connector (for cooling during drilling).
• Open-end wrench.
• Allen key set (4mm, 5mm, 7mm).
• Extra pair of carbon brushes.
• Packed in a durable cardboard box.

4. Operating Instructions (General Guidelines)

• Fixing: Securely fix the base rail to the surface using designated bolts to ensure the machine remains vibration-free.
• Cooling: The water pipe must be connected to a water source and operated during drilling to cool the diamond core bit and suppress dust.
• Starting: Press the power switch; the machine will accelerate gradually thanks to the soft-start feature.
• Drilling: Lower the motor slowly using the side crank handle until the bit touches the surface, maintaining steady and consistent pressure.
• Safety: Always ensure the machine is connected to a grounded outlet and use personal protective equipment (goggles, gloves, and earplugs).

5. Warranty

A one-year maintenance warranty is provided.