DEWALT ATOMIC 20V MAX* Cordless Rotary Hammer Kit

Product Overview

The DEWALT ATOMIC 20V MAX* Cordless Rotary Hammer (Model DCH172D2) is a high-performance tool designed for efficient drilling in concrete and other demanding applications. Powered by a DEWALT brushless motor and a durable German-engineered mechanism, it delivers 1.4 Joules of impact energy. Its lightweight and compact design makes it suitable for various tasks including rod hanging, concrete forming, cable tray and strut mounting, clip and bracket mounting, and railing mounting. This tool is part of the DEWALT PERFORM and PROTECT product line, featuring the SHOCKS ACTIVE VIBRATION CONTROL System to reduce user fatigue and enhance safety. When used with the DWH200D shroud and DWH161D1 dust extractor, it achieves OSHA Table 1 Compliance.

Key Features

• 1.4 Joules of Impact Energy: Ensures fast and efficient drilling in concrete.
• Lightweight and Compact Design: Ideal for a wide range of applications including rod hanging, concrete forming, cable tray and strut mounting, clip and bracket mounting, and railing mounting.
• Brushless Motor: Provides efficient performance and extended runtime.
• Durable German-Engineered Mechanism: Built for reliability and longevity.
• SHOCKS ACTIVE VIBRATION CONTROL System: Reduces vibration felt by the user at the handles, improving comfort and control.
• OSHA Table 1 Compliant: Achieved when used with the DWH200D shroud and DWH161D1 dust extractor.

Safety Information

Always read and understand all safety warnings, instructions, illustrations, and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire, and/or serious injury.

• Wear appropriate personal protective equipment (PPE) including eye protection, hearing protection, and dust masks when operating the tool.
• Ensure the work area is well-lit and clear of obstructions.
• Secure the workpiece before drilling to prevent movement.
• Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust.
• Keep children and bystanders away while operating a power tool.
• Always disconnect the battery pack before making any adjustments, changing accessories, or storing the tool.
• Use only DEWALT recommended accessories and attachments.

Included Components

The DEWALT ATOMIC 20V MAX* Cordless Rotary Hammer Kit (DCH172D2) includes the following items:

• DCH172 Rotary Hammer
• 360° Side Handle
• Depth Rod
• Belt Hook
• (2) DCB203 20V MAX* 2Ah Batteries
• DCB112 Charger
• Kit Box

Setup

Battery Installation and Removal

To install the battery, align the battery pack with the tool's battery port and slide it in until it clicks securely into place. To remove, press the battery release button and pull the battery pack out.

Figure 1: The DEWALT ATOMIC 20V MAX* Cordless Rotary Hammer with a 20V MAX* 2Ah battery pack attached, ready for use. The battery slides into the base of the tool's handle.

Auxiliary Handle Adjustment

The 360° side handle can be adjusted to provide optimal control and comfort for various drilling positions. Loosen the handle by twisting it counter-clockwise, adjust to the desired angle, and then tighten by twisting clockwise.

Figure 2: The rotary hammer shown with its adjustable 360° side handle, which can be positioned for left-handed or right-handed use, or for specific angles to improve leverage and control.

Bit Insertion (SDS-Plus Chuck)

This rotary hammer uses an SDS-Plus chuck system. To insert a bit, pull back the chuck collar, insert the SDS-Plus bit into the chuck until it stops, and then release the collar. The bit should have a slight amount of play (in-and-out movement) once inserted, which is normal for SDS-Plus systems.

Figure 3: A side profile of the DEWALT rotary hammer, highlighting the SDS-Plus chuck at the front where drill bits are inserted. The chuck is designed for quick and secure bit changes.

Operating Instructions

Operating Modes

The DCH172D2 offers multiple operating modes for versatility:

• Rotary Drilling Mode: For drilling in wood, metal, and plastic without hammering action.
• Hammer Drilling Mode: For drilling in concrete, masonry, and stone with hammering action.

Select the desired mode using the mode selector switch located on the side of the tool.

Figure 4: The rotary hammer displaying its mode selector switch, allowing users to easily switch between rotary drilling and hammer drilling functions based on the material and application.

Drilling Techniques

• Apply firm, steady pressure to the tool. Do not force the drill.
• For concrete drilling, ensure the SHOCKS ACTIVE VIBRATION CONTROL System is engaged for optimal performance and reduced vibration.
• When drilling overhead or in dusty environments, attach a compatible dust extractor system (e.g., DWH200D shroud and DWH161D1 dust extractor) to maintain OSHA Table 1 compliance and a cleaner workspace.

Figure 5: A worker demonstrating the use of the DEWALT rotary hammer for drilling into concrete, equipped with a dust extractor attachment for efficient debris collection and improved air quality.

Figure 6: The rotary hammer in action, being used to drill into a concrete wall. The compact design allows for effective operation in various orientations.

Figure 7: An operator using the DEWALT rotary hammer for overhead drilling into a concrete ceiling, showcasing the tool's balance and ergonomic design for challenging positions.

Maintenance

Cleaning

Regularly clean the tool's ventilation openings to prevent overheating. Use a soft, damp cloth to wipe down the exterior. Do not use harsh chemicals or abrasive cleaners. Periodically inspect the chuck for debris and clean as necessary to ensure proper bit seating.

Figure 8: A close-up view of the DEWALT rotary hammer resting on a concrete surface, emphasizing the robust construction and textured grip areas. Regular cleaning of the tool's exterior and ventilation is recommended.

Storage

Store the tool and batteries in a cool, dry place, away from direct sunlight and extreme temperatures. Ensure batteries are fully charged before long-term storage.

Troubleshooting

If you encounter issues with your DEWALT Rotary Hammer, refer to the following common troubleshooting steps:

• Tool Not Starting:
  • Check if the battery is fully charged and properly inserted.
  • Ensure the mode selector switch is correctly set.
  • Verify that the forward/reverse lever is in the correct position (not in the center lock position).
• Reduced Performance:
  • Check the battery charge level.
  • Ensure the drill bit is sharp and appropriate for the material.
  • Clean any dust or debris from the tool's ventilation openings.
• Bit Not Holding in Chuck:
  • Ensure the SDS-Plus bit is clean and free of debris.
  • Verify the chuck collar is fully released after inserting the bit.

For issues not covered here, please contact DEWALT customer support.

Specifications

Warranty and Support

DEWALT products are designed to the highest quality standards. For detailed warranty information, product registration, or technical support, please visit the official DEWALT website or contact their customer service department. Keep your purchase receipt as proof of purchase for any warranty claims.

For additional assistance, you may also refer to the DEWALT store page on Amazon: DEWALT Store