8 Best 20V Rotary Hammers, Compared
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
Choosing the best 20V rotary hammers requires matching specs to your job. We compared 8 models using only the specifications published on their listings. The DEWALT 20V MAX SDS Cordless Rotary Hammer leads for its vibration control and mode versatility. It weighs 6.4 pounds, a manageable weight for overhead work. Each tool offers distinct impact energy and chuck sizes. You need to decide if you require SDS-Plus or SDS-Max bits. This guide helps you select the right tool for concrete drilling or masonry tasks based on power, weight, and battery compatibility.
Quick picks
The best fit for you
- You want the most compact and lightweight rotary hammer DEWALT 20V MAX 1-Inch Cordless Rotary Hammer It weighs 5 pounds and measures 16.2 inches long.
- You need a ready-to-work kit with included batteries Dong Cheng 20V Max Brushless 7/8-Inch Rotary Hammer This brushless model comes as a complete kit with batteries.
- You require high impact energy for heavy duty drilling DEWALT 20V Max 1-1/8-Inch SDS Plus Rotary Hammer The brushless motor delivers strong impact energy for tough concrete.
- You need to drill large holes with SDS-Max bits VEVOR 1-9/16 In. Cordless SDS-Max Rotary Hammer It accepts 1-9/16 inch SDS-Max bits for large diameters.
Our 8 picks
DEWALT 20V MAX SDS Cordless Rotary Hammer
Best for: vibration control and mode versatility
- Voltage
- 20V (what this guide is about)
- Power Source
- Cordless, 20V MAX
- Impact Energy
- 2.1 Joules
- Bit System
- SDS
- Motor Type
- Brushless
- Operating Modes
- 3 modes: Drill, Hammer Drill, Chip
This DEWALT DCH273B is a 20V MAX cordless rotary hammer with a brushless motor. It delivers 2.1 Joules of impact energy for fast concrete drilling. The tool weighs 6.4 lbs and features three modes: drill, hammer drill, and chip. It includes Shock's Active Vibration Control to reduce handle vibration. It is a bare tool, so you need a compatible battery.
Pros
- 2.1 Joules of impact energy
- Brushless motor for efficiency
- Shock's Active Vibration Control
- 3 application modes
Cons
- Sold as a bare tool only
- Heavier than some competitors
- SDS bit system limits chisel options
Good fit if
- You need vibration reduction
- You already own DEWALT 20V batteries
- You require 3 drilling modes
Skip if
- You need a battery included
- You prefer SDS-Max bits
- You want a lighter tool
Verdict: DEWALT 20V SDS Rotary Hammer suits pros who prioritize vibration control and mode versatility. It fits users with existing 20V MAX batteries who need reliable concrete drilling.
DEWALT 20V MAX 1-Inch Cordless Rotary Hammer
Best for: Users needing 2.6 Joules of impact energy
- Voltage
- 20V (what this guide is about)
- Power Source
- 20V MAX Cordless
- Impact Energy
- 2.6 Joules
- Chuck Size
- 1 In.
- Bit System
- SDS Plus
- Motor Type
- Brushless
View on Amazon: DEWALT 20V MAX 1-Inch Cordless Rotary Hammer
This DEWALT 20V MAX cordless rotary hammer features a 1-inch SDS Plus chuck and delivers 2.6 Joules of impact energy. It uses a brushless motor for efficient runtime. The tool includes a 360-degree side handle and depth rod for precise control. It is designed for structural connections and beam anchorage. You should choose this if you need reliable concrete drilling without the weight of a larger SDS Max system.
Pros
- 2.6 Joules of impact energy for fast concrete drilling
- Brushless motor for efficient performance and runtime
- Three application modes: Drill, Hammer Drill, and Chip
- Includes 360-degree side handle and depth rod
Cons
- Sold as a bare tool with no battery included
- SDS Plus bit system limits maximum hole size
- 5-pound weight is heavier than standard drills
Good fit if
- You need 2.6 Joules of impact energy for concrete work
- You prefer the SDS Plus bit system for versatility
- You already own compatible 20V MAX batteries
Skip if
- You require a battery and charger included in the box
- You need to drill holes larger than 1 inch
- You require an SDS Max system for heavy demolition
Verdict: DEWALT 20V 1-Inch SDS Plus Rotary Hammer offers strong 2.6 Joule impact energy for users who already have 20V batteries. It fits contractors who need reliable concrete drilling without the bulk of larger systems.
Dong Cheng 20V Max Brushless 7/8-Inch Rotary Hammer
Best for: users needing a complete 20V SDS-Plus kit
- Voltage
- 20V (what this guide is about)
- Power Source
- 20V Max
- Impact Energy
- 2.1 Joules
- Chuck Size
- 7/8 In.
- Bit System
- SDS-Plus
- Motor Type
- Brushless
View on Amazon: Dong Cheng 20V Max Brushless 7/8-Inch Rotary Hammer
This Dong Cheng rotary hammer delivers 2.1 Joules of impact energy at 4,500 blows per minute. It uses a brushless motor and SDS-Plus chuck for reliable performance. The kit includes two 4.0Ah batteries and a fast charger. You get four operating modes for drilling, hammering, chiseling, and driving. It is a complete cordless system for masonry work.
Pros
- 2.1 Joules of impact energy
- Brushless motor for sustained performance
- Includes two 4.0Ah batteries
- Four operating modes
- 4,500 BPM rate
Cons
- Smaller impact energy than 2.5 Joule competitors
- SDS-Plus bit system limits large hole capacity
- No Bluetooth connectivity
Good fit if
- You need a complete kit with batteries included
- You drill into concrete and masonry regularly
- You prefer SDS-Plus bits
Skip if
- You require SDS-Max for heavy demolition
- You need impact energy above 2.5 Joules
- You want app control
Verdict: Dong Cheng 20V Brushless Rotary Hammer offers a balanced spec set for masonry tasks. It fits users who want a ready-to-work kit with included batteries rather than bare tools.
DEWALT 20V Max 1-1/8-Inch SDS Plus Rotary Hammer
Best for: heavy duty SDS Plus drilling
- Voltage
- 20V (what this guide is about)
- Power Source
- 20V Max Cordless
- Impact Energy
- 3.5 Joules
- Chuck Size
- 1-1/8 In.
- Bit System
- SDS Plus
- Motor Type
- Brushless
View on Amazon: DEWALT 20V Max 1-1/8-Inch SDS Plus Rotary Hammer
This DEWALT rotary hammer delivers 3.5 Joules of impact energy for heavy-duty drilling. The brushless motor supports all-day runtime and durability. Active Vibration Control reduces user fatigue during extended use. The E-Clutch system provides maximum control in bind-up situations. It features a retractable utility hook for convenient hanging. You get corded power without the cord. This tool only model requires separate battery purchase.
Pros
- 3.5 Joules of impact energy
- Brushless motor for extended runtime
- Active Vibration Control reduces fatigue
- E-Clutch for bind-up protection
- Retractable utility hook included
Cons
- Heavier at 8.71 lbs
- Tool only, no battery included
- SDS Plus limits bit size
Good fit if
- You need high impact energy
- You work with SDS Plus bits
- You want vibration reduction
Skip if
- You need a complete kit
- You prefer lighter tools
- You require SDS Max bits
Verdict: DEWALT 20V Brushless 1-1/8" Rotary Hammer suits professionals needing high impact energy and vibration control. It fits users who already own compatible batteries and require robust SDS Plus performance.
VEVOR 1-9/16 In. Cordless SDS-Max Rotary Hammer
Best for: Heavy duty concrete drilling with large bits
- Voltage
- 20V (what this guide is about)
- Power Source
- 20V, 2 x 4.0Ah lithium-ion
- Impact Energy
- 7 J
- Chuck Size
- 1-9/16 In.
- Bit System
- SDS-Max
- Battery Included
- Yes (2 batteries)
View on Amazon: VEVOR 1-9/16 In. Cordless SDS-Max Rotary Hammer
This VEVOR rotary hammer uses SDS-Max bits and delivers 7J of impact energy, making it suitable for heavy concrete work. It includes two 20V 4.0Ah batteries for extended runtime. The tool offers 0-2700 BPM and weighs 23.6 lbs. You get a 360° handle and LED light. It is built for tough masonry tasks where maximum power is required.
Pros
- 7J impact energy for efficient drilling
- Includes two 20V 4.0Ah batteries
- SDS-Max bit system for large bits
- 0-2700 BPM speed range
Cons
- 23.6 lbs weight is heavy for overhead use
- 1-9/16 in chuck size limits bit availability
- No brushless motor specified in data
Good fit if
- You need to drill large holes in concrete
- You require high impact energy for masonry
- You want included batteries for immediate use
Skip if
- You prefer lightweight tools for extended periods
- You primarily use SDS-Plus bits
- You need a brushless motor for longevity
Verdict: VEVOR 1-9/16 in SDS-Max Rotary Hammer suits professionals drilling large diameter holes in concrete. Its high impact energy and included batteries support heavy duty jobs, but the weight and specific bit system limit general use.
DCK 20V Brushless SDS-Plus Rotary Hammer
Best for: Heavy duty concrete drilling with long runtime
- Voltage
- 20V (what this guide is about)
- Power Source
- 20V
- Impact Energy
- 3.6J
- Bit System
- SDS Plus
- Motor Type
- Brushless
- Operating Modes
- 3 modes
This DCK rotary hammer features a brushless motor and 3.6J impact energy. It includes a 6.0Ah battery and 6A fast charger. The tool offers three operating modes and 4,500 BPM. It suits users needing high capacity for concrete and masonry. The ergonomic design reduces vibration. It is a solid option for heavy-duty drilling tasks.
Pros
- 6.0Ah battery capacity for extended runtime
- 3.6J impact energy for tough materials
- Brushless motor for durability
- 6A fast charger included
- Three operating modes for versatility
Cons
- Heavier build due to 6.0Ah battery
- Limited to SDS-Plus bit system
- No variable speed display shown
Good fit if
- You need long runtime for large jobs
- You work with concrete or masonry
- You prefer brushless motor durability
Skip if
- You require SDS-Max bits
- You need a lighter tool
- You want a bare tool only
Verdict: DCK 20V Brushless SDS Plus Rotary Hammer fits users who prioritize battery life and impact power for concrete work. It is ideal for those tackling large projects without frequent recharging.
DEWALT 1-1/8 Inch 20V SDS Plus Rotary Hammer
Best for: Standard masonry drilling up to 1-1/8 inch
- Voltage
- 20V (what this guide is about)
- Power Source
- 20V
- Chuck Size
- 1-1/8 In.
- Bit System
- SDS-plus
- Included Tools
- Rotary Hammer
- Dimensions
- 21.7 × 1 × 5.5 inches
View on Amazon: DEWALT 1-1/8 Inch 20V SDS Plus Rotary Hammer
This DEWALT rotary hammer delivers 1-1/8 inch drilling capacity in an SDS-plus system. It runs on a 20V power source and weighs 16 pounds. The unit measures 21.7 inches in length. It suits users who need robust masonry drilling without the bulk of SDS-max tools. The design focuses on core drilling performance for standard construction tasks.
Pros
- 1-1/8 inch maximum drilling capacity
- SDS-plus bit system for quick changes
- 20V power source for cordless use
- 16 pound weight for stability
Cons
- 16 pound weight is heavy for overhead work
- 21.7 inch length reduces maneuverability in tight spaces
- No variable speed trigger mentioned in specifications
Good fit if
- You need to drill up to 1-1/8 inch holes in masonry
- You prefer the SDS-plus bit system over SDS-max
- You work on standard residential or light commercial construction
Skip if
- You require drilling larger than 1-1/8 inch
- You need an SDS-max bit system for heavy duty rock
- You prioritize lightweight tools for overhead use
Verdict: DEWALT 1-1/8 Inch 20V SDS Plus Rotary Hammer fits contractors who need reliable masonry drilling up to 1-1/8 inch. It is a solid choice for standard SDS-plus tasks where weight is not a primary concern.
CRAFTSMAN V20 7/8-Inch Brushless Rotary Hammer
Best for: Existing V20 users needing a durable tool
- Voltage
- 20V (what this guide is about)
- Power Source
- 20V (V20)
- Impact Energy
- 2.0 Joules
- Chuck Size
- 7/8 in.
- Bit System
- SDS
- Motor Type
- Brushless
View on Amazon: CRAFTSMAN V20 7/8-Inch Brushless Rotary Hammer
The Craftsman V20 RP SDS Rotary Hammer Drill uses a brushless motor for extended runtime and efficiency. It delivers 2.0 joules of impact energy for faster application speed. Weighing 6.09 lbs, it features a lightweight, balanced design. This bare tool requires a separate 20V battery. It suits users who need a durable mechanism for tough applications without the weight of a fully kitted unit.
Pros
- Brushless motor for extended runtime
- 2.0 joules of impact energy
- Lightweight 6.09 lbs design
- Durable mechanism for tough jobs
Cons
- Sold as a bare tool only
- 7/8 inch chuck size limits bit compatibility
- Heavier than some compact competitors
Good fit if
- You already own Craftsman V20 batteries
- You need a durable tool for tough applications
- You prefer a lightweight, balanced design
Skip if
- You need a complete kit with batteries
- You require SDS-Max compatibility
- You need maximum impact energy
Verdict: The Craftsman V20 SDS Rotary Hammer offers a balanced, durable option for existing V20 users. It fits those who value runtime and a manageable weight for standard SDS-Plus tasks.
Specifications side by side
| Spec | DEWALT 20V MAX SDS Cordless Rotary Hammer | DEWALT 20V MAX 1-Inch Cordless Rotary Hammer | Dong Cheng 20V Max Brushless 7/8-Inch Rotary Hammer | DEWALT 20V Max 1-1/8-Inch SDS Plus Rotary Hammer | VEVOR 1-9/16 In. Cordless SDS-Max Rotary Hammer | DCK 20V Brushless SDS-Plus Rotary Hammer | DEWALT 1-1/8 Inch 20V SDS Plus Rotary Hammer | CRAFTSMAN V20 7/8-Inch Brushless Rotary Hammer |
|---|---|---|---|---|---|---|---|---|
| Power Source | Cordless, 20V MAX | 20V MAX Cordless | 20V Max | 20V Max Cordless | 20V, 2 x 4.0Ah lithium-ion | 20V | 20V | 20V (V20) |
| Impact Energy | 2.1 Joules | 2.6 Joules | 2.1 Joules | 3.5 Joules | 7 J | 3.6J | not specified | 2.0 Joules |
| Chuck Size | not specified | 1 In. | 7/8 In. | 1-1/8 In. | 1-9/16 In. | not specified | 1-1/8 In. | 7/8 in. |
| Bit System | SDS | SDS Plus | SDS-Plus | SDS Plus | SDS-Max | SDS Plus | SDS-plus | SDS |
| Motor Type | Brushless | Brushless | Brushless | Brushless | not specified | Brushless | not specified | Brushless |
| Operating Modes | 3 modes: Drill, Hammer Drill, Chip | not specified | 4 modes | not specified | not specified | 3 modes | not specified | not specified |
| Battery Included | No (bare tool) | No (Bare Tool Only) | not specified | No (Tool Only) | Yes (2 batteries) | not specified | not specified | No (bare tool only) |
| Blows Per Minute | not specified | not specified | 4,500 BPM | not specified | 0-2,700 BPM | 4,500 BPM | not specified | not specified |
| Weight | 5.95 pounds | 5 lbs. | not specified | 8.71 lbs. | 23.6 lbs. | not specified | not specified | 6.09 lbs. |
| Variable Speed | not specified | not specified | not specified | not specified | not specified | Variable speed trigger | not specified | not specified |
| Voltage | 20V | 20V | 20V | 20V | 20V | 20V | 20V | 20V |
| Included Tools | Drill Driver, Hammer Drill, Rotary Hammer | Drill Driver, Hammer Drill, Rotary Hammer | Drill Driver, Hammer Drill, Rotary Hammer | Drill Driver, Hammer Drill, Rotary Hammer | Drill Driver, Hammer Drill, Rotary Hammer | Drill Driver, Hammer Drill, Rotary Hammer | Rotary Hammer | Drill Driver, Hammer Drill, Rotary Hammer |
| Battery Capacity | not specified | not specified | not specified | not specified | not specified | 6.0 Ah | not specified | not specified |
| Bit Type | not specified | SDS-Plus | SDS-Plus | SDS-Plus | SDS-Max | SDS-Plus | SDS-Plus | not specified |
| Application | not specified | not specified | not specified | not specified | Concrete | Concrete | not specified | not specified |
| Dimensions | 13 × 4.2 × 8.6 inches | 16.2 × 9 × 4 inches | 11.4 × 2.2 × 8.3 inches | 15.3 × 4 × 10.6 inches | 18.5 × 4.13 × 10.2 inches | 3 × 1.5 × 5 inches | 21.7 × 1 × 5.5 inches | 15.9 × 10 × 4.21 inches |
| Size | One Size | One Size | not specified | One Size | 1-9/16 in | Tool Only | not specified | not specified |
| Color | Multi | Yeif | not specified | Multi | Orange+black | not specified | Black Yellow | Black |
| Model | DCH273B | DCH133B | DCZC22EM | DCH293B | BL-DC3805/20V-MT | KRH20V-28-01 | DCH263R2 | CMCH234B |
If you share batteries across outdoor gear, you can evaluate the best 20V chainsaws by bar length and chain speed.
How to choose the right 20V rotary hammer
-
Check included battery status
You must verify whether the kit includes batteries or is sold as a bare tool. The DEWALT DCH273B is a bare tool, meaning you need compatible 20V MAX batteries already in your inventory. In contrast, the Dong Cheng DCZC22EM comes with included batteries, offering a complete ready-to-work solution. If you lack existing power tool batteries, selecting a kit with included packs ensures immediate usability without additional purchases.
-
Match bit system to holes
Your drilling requirements dictate the necessary bit type. SDS-Plus systems, found on the DEWALT DCH133B and DCK KRH20V-28-01, accommodate smaller holes up to 1-1/8 inches for standard masonry work. For larger diameter holes, you need an SDS-Max system like the VEVOR BL-DC3805/20V-MT, which supports 1-9/16 inch bits. Choosing the wrong bit system limits your tool's capability for specific concrete tasks.
-
Consider motor efficiency
Brushless motors offer improved efficiency and durability compared to brushed alternatives. The Dong Cheng DCZC22EM and DCK KRH20V-28-01 both feature brushless motors, which typically provide longer runtime and less maintenance. The DEWALT DCH293B also utilizes a brushless design for heavy-duty performance. If you prioritize sustained operation and reduced wear over time, selecting a model with a brushless motor is a practical specification to verify.
-
Evaluate weight for control
Weight significantly affects your ability to control the tool during overhead or prolonged use. The DEWALT DCH133B weighs only 5 pounds, making it manageable for extended periods. Conversely, the VEVOR BL-DC3805/20V-MT weighs 23.6 pounds, reflecting its heavy-duty SDS-Max design. If you need a lightweight option for general tasks, the 5-pound model is preferable. For stationary heavy drilling, the heavier unit provides necessary stability and power.
-
Assess battery capacity needs
For extended runtime, check the battery capacity if included. The DCK KRH20V-28-01 is highlighted for its 6.0 Ah battery, which supports long projects without frequent recharging. Other models may include smaller capacity batteries or none at all. If you tackle large concrete projects, a higher amp-hour rating ensures the tool remains operational longer. Verify the included battery specs to match your expected daily workload duration.
Frequently asked questions
Which 20V rotary hammer is best for vibration control?
The DEWALT DCH273B is the top choice for reducing hand fatigue. It weighs 6.4 pounds and measures 13 inches in length. This model suits pros who prioritize comfort during extended use. The compact design helps manage vibration better than heavier alternatives.
What is the lightest 20V rotary hammer on this list?
The DEWALT DCH133B is the lightest option at 5 pounds. It measures 16.2 inches long and 9 inches wide. This weight makes it easier to handle for overhead work or tight spaces. It delivers 2.6 Joules of impact energy for efficient drilling.
Which tool supports the largest bit size?
The VEVOR BL-DC3805/20V-MT supports the largest bits at 1-9/16 inches. It uses the SDS-Max system for heavy-duty concrete drilling. The unit weighs 23.6 pounds and measures 18.5 inches long. This size is ideal for large diameter holes in tough masonry.
Are there brushless motor options available?
Yes, three models feature brushless motors. The Dong Cheng DCZC22EM, DEWALT DCH293B, and DCK KRH20V-28-01 all use brushless technology. Brushless motors typically offer longer runtime and durability. The DCK model includes a 6.0 Ah battery for extended heavy-duty use.
Which rotary hammer comes with included batteries?
The Dong Cheng DCZC22EM is sold as a complete kit with batteries. Most other models, like the DEWALT DCH273B, are bare tools. You must purchase compatible 20V batteries separately for bare tools. The Dong Cheng option is ready to work out of the box.
What is the heaviest tool in this comparison?
The VEVOR BL-DC3805/20V-MT is the heaviest at 23.6 pounds. It measures 18.5 inches long and 10.2 inches high. The weight supports its high impact energy for heavy-duty concrete work. It is not suited for users who need a lightweight, portable option.
Which model is best for users with existing 20V batteries?
The DEWALT DCH273B is ideal for those with existing 20V MAX batteries. It is sold as a bare tool. This allows you to use your current power source without buying new batteries. It offers versatile modes and strong vibration control for general masonry tasks.