Introduction

The CONENTOOL 1400W Rotary Hammer is a powerful and versatile electric impact drill designed for heavy-duty drilling and chiseling in concrete, stone, and bricks. Engineered for both professionals and DIY enthusiasts, this tool delivers robust performance with a 3300 BPM hammering frequency and a variable speed range of 0-800 r/min. It features an SDS Plus chuck for quick bit changes, a 360° rotatable auxiliary handle for ergonomic control, and a convenient 2-in-1 mode switch for seamless transitions between drilling and chiseling tasks. This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your rotary hammer drill.
Safety Instructions
Always follow basic safety precautions to reduce the risk of fire, electric shock, and personal injury when using power tools.
- Work Area Safety: Keep your work area clean and well-lit. Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust.
- Electrical Safety: Power tool plugs must match the outlet. Never modify the plug. Avoid body contact with earthed or grounded surfaces. Do not expose power tools to rain or wet conditions.
- Personal Safety: Always wear eye protection, hearing protection, and a dust mask. Dress properly; avoid loose clothing or jewelry. Secure long hair. Use safety equipment such as non-skid safety shoes, hard hat, or hearing protection when appropriate.
- Tool Use and Care: Do not force the power tool. Use the correct power tool for your application. Disconnect the plug from the power source before making any adjustments, changing accessories, or storing power tools.
- Maintenance: Maintain power tools. Check for misalignment or binding of moving parts, breakage of parts, and any other condition that may affect the power tool’s operation.
Package Contents
Carefully unpack your CONENTOOL Rotary Hammer Drill and check for the following items. If any parts are missing or damaged, please contact customer support.

Image: Product accessory list
- CONENTOOL 1400W Rotary Hammer Drill
- Auxiliary Handle
- Dust Guard
- SDS Plus Drill Bits (6mm, 8mm, 10mm, 12mm x 150mm)
- Square Shank Four-Pit Pointed Chisel (15 x 250mm)
- Square Shank Four-Pit Flat Chisel (15 x 250mm)
- Drill Chuck (for standard drill bits)
- Carbon Brushes (spare set)
- Mitten (work gloves)
- Plastic Carrying Case
- Instruction Manual
Specifications

Image: Product dimensions and technical parameters
| Feature | Specification |
|---|---|
| Power | 1400W |
| Speed | 0-800 r/min |
| Power Voltage | 220V 50/60Hz |
| Hammering Times (Frequency) | 3300 BPM |
| Weight | 6 kg |
| Hammer Type | Hammer Drill |
| Certification | CE |
| Use | Home DIY |
| Power Source | AC |
| Battery Included | No |
| Drill Bit Size (Square Shank Four-Pit) | 6, 8, 10, 12mm x 150mm |
| Pointed Chisel Size (Square Shank Four-Pit) | 15 x 250mm |
| Flat Chisel Size (Square Shank Four-Pit) | 15 x 250mm |
| Product Dimensions (approx.) | 36cm (Length) x 25.5cm (Height) x 8cm (Width) |
| Packaging | Plastic box |
Setup and Assembly
1. Attaching the Auxiliary Handle
The 360° rotatable auxiliary handle provides better control and comfort. To attach or adjust:
- Loosen the handle clamp by twisting it counter-clockwise.
- Slide the handle onto the front of the drill body to your desired position.
- Rotate the handle to the most comfortable working angle.
- Tighten the handle clamp by twisting it clockwise until secure.

Image: 360° rotation adjustable auxiliary handle
2. Installing Drill Bits / Chisels (SDS Chuck)
The SDS chuck allows for quick and secure bit changes.
- Ensure the drill is unplugged from the power source.
- Pull back the chuck collar towards the tool body.
- Insert the SDS Plus drill bit or chisel into the chuck until it clicks into place. The bit should have a slight amount of play (movement in and out) which is normal for SDS systems.
- Release the chuck collar. Gently pull on the bit to ensure it is securely locked.
- To remove, pull back the chuck collar and pull the bit out.

Image: SDS Chuck detail
3. Dust Guard Installation
The dust guard helps protect your eyes and maintain a cleaner work environment.
- Slide the dust guard onto the drill bit before inserting the bit into the chuck.
- Position the dust guard so it rests against the chuck, providing a barrier against debris.

Image: Dust guard in use
Operating Instructions
1. Powering On/Off
- To turn on the tool, press the trigger switch.
- For continuous operation, press the trigger switch and then press the lock-on button.
- To turn off, release the trigger switch. If locked on, press the trigger switch again to release the lock-on button.
2. Mode Selection (2-IN-1 Knob)
The rotary hammer features a 2-IN-1 knob for quick mode switching. Ensure the tool is unplugged before changing modes.

Image: Operating modes diagram
- Hammer Drilling Mode: For drilling in concrete, stone, and bricks with alloy drill bits.
- Drilling Mode: For drilling or reaming metal plates and wood boards.
- Chiseling Mode: For grooving the surface of concrete or breaking stones and concrete.
- Angle Adjustment Mode: Only for adjusting the angle of flat chisel bits.
To switch modes, rotate the 2-IN-1 knob to the desired setting. Ensure it clicks firmly into place.
3. Drilling Operations
- Select the appropriate drill bit for your material.
- Set the tool to either 'Drilling Mode' (for wood/metal) or 'Hammer Drilling Mode' (for concrete/masonry).
- Hold the tool firmly with both hands, using the auxiliary handle for stability.
- Position the drill bit on the workpiece.
- Start the drill and apply steady, even pressure. Do not force the tool.
4. Chiseling Operations
- Install the appropriate chisel bit (pointed or flat).
- Set the tool to 'Chiseling Mode'.
- For angle adjustment of the chisel, switch to 'Angle Adjustment Mode', set the desired angle, then switch back to 'Chiseling Mode'.
- Hold the tool firmly and position the chisel on the material to be broken or grooved.
- Start the tool and guide it along the desired path, allowing the hammering action to do the work.
Maintenance
1. Cleaning
- Always unplug the tool before cleaning.
- Regularly clean the ventilation openings (Upgrade Air Outlet) to prevent overheating. Use a soft brush or compressed air.
- Wipe the tool housing with a damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Clean the SDS chuck regularly to ensure smooth bit changes and prevent dust buildup.
2. Lubrication
The tool features an anti-leakage cap for adding lubricating oil, which is crucial for continuous performance and tool longevity.

Image: Anti-Leakage Cap detail
- Periodically check the oil level.
- To add lubricant, unscrew the anti-leakage cap.
- Add a small amount of appropriate lubricating oil (e.g., grease for hammer drills) as needed. Do not overfill.
- Securely replace the cap.
3. Carbon Brush Replacement
Carbon brushes are wear parts and need to be replaced when worn out. Spare carbon brushes are included in your kit.
- Unplug the tool from the power source.
- Locate the carbon brush caps on the sides of the motor housing.
- Unscrew the caps using a screwdriver.
- Remove the old carbon brushes.
- Insert the new carbon brushes, ensuring they are oriented correctly.
- Replace and tighten the carbon brush caps.
4. Storage
- Store the tool and accessories in the provided plastic carrying case.
- Keep the tool in a dry, secure place, out of reach of children.
- Protect the tool from direct sunlight and extreme temperatures.
Troubleshooting
If you encounter issues with your rotary hammer drill, refer to the table below for common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start | No power supply; Faulty power cord/plug; Worn carbon brushes | Check power outlet and connections; Inspect power cord; Replace carbon brushes |
| Reduced power/performance | Worn carbon brushes; Insufficient lubrication; Overheating | Replace carbon brushes; Add lubricant; Allow tool to cool down; Clean air vents |
| Bit not rotating or hammering | Incorrect mode selected; Bit not properly inserted; Internal mechanism issue | Check mode selector; Re-insert bit securely; Contact service center if problem persists |
| Excessive vibration or noise | Damaged bit; Loose components; Internal wear | Replace damaged bit; Check for loose parts and tighten; Contact service center |
| Overheating | Blocked air vents; Prolonged heavy use | Clean air vents; Allow tool to rest and cool; Reduce load |
User Tips
- Pre-Drill for Large Holes: For very large diameter holes in tough materials, consider drilling a smaller pilot hole first to reduce strain on the tool and bit.
- Let the Tool Do the Work: Avoid applying excessive pressure. The hammer action is designed to break through material efficiently; forcing it can lead to premature wear and reduced effectiveness.
- Regularly Check Bits: Inspect drill bits and chisels for wear or damage before each use. Dull or damaged bits can reduce efficiency and increase the risk of kickback.
- Clean After Each Use: A quick clean of the chuck and air vents after each project will significantly extend the life of your tool.
- Use Appropriate PPE: Always wear safety glasses, hearing protection, and gloves. When working with concrete or masonry, a dust mask is highly recommended.
Warranty and Support
Your CONENTOOL 1400W Rotary Hammer Drill is manufactured to high-quality standards. For any questions regarding product operation, maintenance, or if you require technical assistance, please refer to the contact information provided with your purchase or visit the official CONENTOOL website for support resources.





