Best Rotary Hammer Drills
1. DEWALT DCH273B 20V MAX XR Brushless SDS Plus Rotary Hammer Drill
The DEWALT DCH273B stands out as a top performer in the cordless rotary hammer drill category. This 20V MAX XR model combines power and portability, making it ideal for professionals who need reliability on job sites without access to power outlets.
What sets this model apart is its brushless motor technology, which provides up to 30% more runtime compared to brushed motors. The German-engineered mechanism delivers 2.1 joules of impact energy, powerful enough to tackle most concrete and masonry applications while remaining lightweight at just 6.8 pounds.
| Pros | Cons |
|---|---|
| Brushless motor for longer runtime | Battery and charger sold separately |
| Lightweight design (6.8 lbs) | Higher price point than some competitors |
| 2.1 joules of impact energy | Not suitable for the heaviest applications |
| Active vibration control system | Limited to 1-inch drilling capacity |
The DCH273B features three modes of operation: rotary hammer, hammer-only, and rotation-only, giving users versatility for different applications. Its active vibration control system significantly reduces hand fatigue during extended use, which professionals particularly appreciate during all-day projects.
2. Makita HR2475 1-Inch D-Handle SDS-Plus Rotary Hammer
Makita’s HR2475 is a corded powerhouse that delivers consistent performance for demanding applications. With a 7-amp motor generating 2.7 joules of impact energy, this tool excels at drilling holes up to 1 inch in concrete and masonry.
The D-handle design provides excellent ergonomics and control, while the sequential impact timing delivers 40% less vibration than standard rotary hammers. This makes the HR2475 more comfortable during extended use, reducing user fatigue significantly.
| Pros | Cons |
|---|---|
| Powerful 7-amp motor | Requires power outlet access |
| 40% less vibration than standard models | Heavier than some cordless options |
| Variable speed control dial | D-handle design may not suit all users |
| Torque limiting clutch prevents gear damage | No dust collection system included |
What makes the HR2475 particularly valuable is its torque limiting clutch, which prevents gear damage if the bit binds. The variable speed control dial allows users to match the speed to the application, providing greater precision for delicate tasks while still offering full power when needed.
3. Bosch RH328VC 1-1/8-Inch SDS-Plus Rotary Hammer
The Bosch RH328VC combines German engineering with exceptional vibration control, making it one of the most comfortable rotary hammers to use for extended periods. Its 8-amp motor delivers 2.6 foot-pounds of impact energy, powerful enough for drilling holes up to 1-1/8 inches in concrete.
Bosch’s Vibration Control technology is the standout feature here, using a counterbalance mechanism that significantly reduces vibration compared to competitors. This results in less user fatigue and greater precision during operation.
| Pros | Cons |
|---|---|
| Superior vibration control system | Higher price point than similar models |
| Powerful 8-amp motor | Somewhat heavier at 7.7 pounds |
| Vario-Lock positioning for chisel adjustment | Corded design limits mobility |
| Integral clutch to minimize torque reaction | No LED work light |
The RH328VC features three operation modes: rotary hammer, hammer-only, and rotation-only. The Vario-Lock positioning allows users to rotate and lock the chisel into 40 different positions, providing optimal working angles for various chiseling tasks.
4. Milwaukee 2712-20 M18 FUEL 1″ SDS Plus Rotary Hammer
Milwaukee’s 2712-20 represents the pinnacle of cordless rotary hammer technology with its M18 FUEL platform. This tool delivers corded-like performance with the freedom of cordless operation, generating an impressive 3.3 foot-pounds of impact energy.
The brushless POWERSTATE motor provides exceptional drilling speed and runtime, while the REDLINK PLUS intelligence system prevents overloading and overheating. These features combine to create a tool that professionals can rely on for heavy-duty applications.
| Pros | Cons |
|---|---|
| Exceptional 3.3 ft-lbs impact energy | Premium price point |
| Brushless motor for extended runtime | Battery and charger sold separately |
| REDLINK PLUS intelligence prevents damage | Heavier than some competitors at 7.5 lbs |
| Anti-vibration system reduces fatigue | Limited to 1-inch drilling capacity |
The 2712-20 features an anti-vibration system that makes it comfortable to use despite its power. Its mechanical clutch protects the tool if the bit binds, while the all-metal gear case enhances durability for job site conditions.
5. Hilti TE 3-C SDS-Plus Rotary Hammer Drill
Hilti’s reputation for premium construction tools is exemplified in the TE 3-C SDS-Plus Rotary Hammer. This corded model delivers exceptional reliability and performance, particularly excelling in speed drilling tests as noted by Tool Box Buzz’s head-to-head testing.
The TE 3-C generates 2.7 joules of impact energy with its 7-amp motor, providing consistent power for drilling holes up to 1 inch in concrete. What sets Hilti apart is its legendary durability and precision engineering.
| Pros | Cons |
|---|---|
| Industry-leading reliability and durability | Highest price point in its class |
| Fastest drilling speed in competitive testing | Requires power outlet access |
| Active Vibration Reduction (AVR) system | Specialized service centers |
| 20-year limited warranty available | Heavier than some competitors |
Hilti’s Active Vibration Reduction (AVR) system makes the TE 3-C comfortable to use despite its power. The three-mode selector switch allows for rotary drilling, hammer drilling, and chiseling operations, providing versatility for different applications.
6. Flex FX1171T-A 20V SDS-Plus Rotary Hammer Kit
The Flex FX1171T-A is gaining recognition as a top-tier rotary hammer, manufactured by the same company that produces Kobalt and Craftsman tools. This 20V cordless model delivers 2.2 joules of impact energy, impressive for its compact size and weight.
What makes the Flex stand out is its excellent balance of power, weight, and value. At just 6.6 pounds (tool only), it’s one of the lighter options while still providing enough power for most concrete drilling applications up to 7/8 inch.
| Pros | Cons |
|---|---|
| Excellent power-to-weight ratio | Newer brand with less market presence |
| Brushless motor for extended runtime | Limited service center network |
| Compatible with Flex 20V battery system | Slightly less powerful than premium brands |
| 5-year warranty with registration | Limited accessory availability |
The FX1171T-A features an anti-vibration handle that reduces user fatigue during extended operation. Its three-mode selector allows for rotary drilling, hammer drilling, and chiseling, providing versatility for different applications.
7. Metabo HPT DH28PMY2 1-1/8″ SDS Plus Rotary Hammer
Formerly known as Hitachi, Metabo HPT delivers professional-grade performance with the DH28PMY2. This corded rotary hammer features a 10.5-amp motor that generates 2.5 joules of impact energy, making it suitable for drilling holes up to 1-1/8 inches in concrete.
The DH28PMY2 stands out with its User Vibration Protection (UVP) technology, which significantly reduces vibration compared to standard rotary hammers. This makes it more comfortable to use for extended periods, reducing user fatigue.
| Pros | Cons |
|---|---|
| Powerful 10.5-amp motor | Heavier than some competitors at 7.7 lbs |
| User Vibration Protection technology | Requires power outlet access |
| Auto-stop brushes for motor protection | Slightly bulky for overhead work |
| Competitive pricing for features offered | No LED work light |
The auto-stop carbon brushes protect the motor from damage, extending the tool’s lifespan. The DH28PMY2 also features a mode change lever for easy switching between drilling, hammer drilling, and chiseling operations.
8. Kobalt KHD 124B-03 24V Max Brushless SDS-Plus Rotary Hammer
Kobalt’s KHD 124B-03 offers excellent value for DIY enthusiasts and professionals on a budget. This 24V cordless model delivers 1.8 joules of impact energy, sufficient for drilling holes up to 3/4 inch in concrete.
The brushless motor provides extended runtime and durability compared to brushed alternatives. The KHD 124B-03 is part of Kobalt’s 24V Max system, allowing users to share batteries across multiple tools.
| Pros | Cons |
|---|---|
| Excellent value for performance | Less powerful than premium options |
| Brushless motor technology | Limited to 3/4-inch drilling capacity |
| Lightweight design at 6.5 lbs (tool only) | Battery and charger often sold separately |
| 5-year limited warranty | Less refined vibration control |
The KHD 124B-03 features three operation modes: drilling, hammer drilling, and chiseling. Its ergonomic design includes an auxiliary handle for better control and a depth stop rod for consistent drilling depth.
Comprehensive Comparison Table
| Model | Power Source | Impact Energy | Weight | Max Drilling Capacity | Vibration Control | Price Range | Rating (1-5) |
|---|---|---|---|---|---|---|---|
| DEWALT DCH273B | 20V Cordless | 2.1 Joules | 6.8 lbs | 1 inch | Active System | $$$ | 4.7 |
| Makita HR2475 | Corded (7A) | 2.7 Joules | 7.3 lbs | 1 inch | Sequential Impact | $$ | 4.6 |
| Bosch RH328VC | Corded (8A) | 2.6 ft-lbs | 7.7 lbs | 1-1/8 inch | Counterbalance | $$$ | 4.8 |
| Milwaukee 2712-20 | 18V Cordless | 3.3 ft-lbs | 7.5 lbs | 1 inch | Anti-Vibration | $$$$ | 4.9 |
| Hilti TE 3-C | Corded (7A) | 2.7 Joules | 7.9 lbs | 1 inch | AVR System | $$$$$ | 4.9 |
| Flex FX1171T-A | 20V Cordless | 2.2 Joules | 6.6 lbs | 7/8 inch | Anti-Vibration Handle | $$$ | 4.5 |
| Metabo HPT DH28PMY2 | Corded (10.5A) | 2.5 Joules | 7.7 lbs | 1-1/8 inch | UVP Technology | $$$ | 4.6 |
| Kobalt KHD 124B-03 | 24V Cordless | 1.8 Joules | 6.5 lbs | 3/4 inch | Basic | $$ | 4.3 |
Choosing the Right Rotary Hammer Drill
When selecting a rotary hammer drill, several factors should influence your decision:
Corded vs. Cordless
Corded rotary hammers generally provide more consistent power and unlimited runtime, making them ideal for extended use or particularly demanding applications. The Hilti TE 3-C and Bosch RH328VC exemplify the reliability and power of corded models.
Cordless models offer mobility and convenience, especially valuable when working in areas without easy access to power outlets. Modern cordless options like the Milwaukee 2712-20 and DEWALT DCH273B deliver performance that rivals corded models, though runtime remains limited by battery capacity.
Impact Energy
Impact energy, measured in joules or foot-pounds, indicates the hammer’s striking force. For occasional DIY use and smaller holes (up to 1/2 inch), a lower-powered model like the Kobalt KHD 124B-03 (1.8 joules) is sufficient.
For professional applications or larger holes (3/4 to 1-1/8 inch), higher impact energy is necessary. The Milwaukee 2712-20 with 3.3 foot-pounds of impact energy represents the high end of the spectrum for portable tools.
Vibration Control
Extended use of rotary hammers without adequate vibration control can lead to user fatigue and potentially contribute to hand-arm vibration syndrome. Models with advanced vibration control systems, like the Bosch RH328VC with its counterbalance mechanism or Hilti’s AVR system, significantly improve comfort during extended use.
Weight and Ergonomics
Lighter tools reduce fatigue during overhead work or extended use. The Kobalt KHD 124B-03 (6.5 lbs) and Flex FX1171T-A (6.6 lbs) are among the lightest options, while still providing reasonable performance.
Ergonomic features like adjustable side handles, soft-grip surfaces, and balanced weight distribution also contribute significantly to user comfort and control.
Conclusion and Recommendations
After thorough analysis of the best rotary hammer drills available, several clear recommendations emerge for different user needs:
For Professional Daily Use:
The Hilti TE 3-C stands as the benchmark for reliability, speed, and durability. Though it commands a premium price, professionals who depend on their tools daily will appreciate its consistent performance and legendary durability. The Milwaukee 2712-20 offers the best cordless alternative with comparable power and the freedom of cordless operation.
For Serious DIYers and Occasional Professionals:
The DEWALT DCH273B and Bosch RH328VC offer excellent performance at more moderate price points. Both provide professional-grade features and reliability without the premium price of top-tier brands.
For Value-Conscious Buyers:
The Flex FX1171T-A and Kobalt KHD 124B-03 deliver impressive performance for their price points. These models provide sufficient power for most common applications while offering significant savings compared to premium brands.
For Vibration-Sensitive Users:
The Bosch RH328VC with its counterbalance mechanism and the Makita HR2475 with sequential impact timing provide superior vibration control, making them ideal for users who are particularly sensitive to vibration or who need to use the tool for extended periods.
Ultimately, the best rotary hammer drill depends on your specific needs, frequency of use, and budget. By carefully considering the factors outlined above and matching them to your requirements, you can select a tool that will provide reliable service for years to come.