Bosch 11255VSR-RT BULLDOG Xtreme 1-Inch vs Bosch GBH18V-22N 18V Brushless SDS-plus®: Spec Comparison
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You are looking at the bosch 11255vsr rt bulldog xtreme 1 inch vs gbh18v 22n 18v brushless. Both are rotary hammers using the SDS-plus system for concrete work. The main difference is power source. One is a corded 7-amp unit. The other is a cordless 18V brushless tool. You need to decide between continuous corded power and portable battery operation. This choice affects weight, runtime, and maximum impact energy available for your specific drilling tasks.
Key differences
| Aspect | Bosch Bulldog Xtreme 1-Inch SDS-Plus Rotary Hammer | Bosch 3/4-Inch Brushless SDS-Plus Rotary Hammer |
|---|---|---|
| Power Source | Corded (7-1/5 Amps) | 18V Battery (Bare Tool) |
| Chuck Size | 1 Inch | 3/4 Inch |
| Impact Energy | 2-1/5 Ft.-Lbs. | 1.4 Ft.-Lbs. (EPTA) |
| Weight | 11.5 lbs. | 5.1 lbs. (tool only) |
| Motor Type | Not listed | Brushless |
| Max BPM | 5,800 | 4,675 |
Which one should you choose?
Choose Bosch Bulldog Xtreme 1-Inch SDS-Plus Rotary Hammer if
- You need the highest impact energy for heavy-duty concrete breaking.
- You prefer unlimited runtime without waiting for battery charges.
- You require the larger 1-inch chuck capacity for bigger bits.
Choose Bosch 3/4-Inch Brushless SDS-Plus Rotary Hammer if
- You want a lightweight tool for overhead or extended use.
- You need the portability of a cordless 18V system.
- You value brushless motor efficiency and kickback control features.
Verdict: The corded 11255VSR-RT is better for stationary, high-impact demolition where maximum power is critical. The cordless GBH18V-22N is the superior choice for general drilling tasks where weight and mobility matter more than peak force. Choose based on whether you prioritize raw power or ease of handling.
Power Source and Weight Comparison
Power Source
The Bosch Bulldog Xtreme 1-Inch relies on a corded 7-1/5-amp motor. This provides continuous power without battery concerns. The Bosch GBH18V-22N uses an 18V battery system. It is a bare tool, meaning you must supply your own batteries. The corded option offers unlimited runtime for heavy jobs. The cordless model offers mobility and freedom from cords. You must decide if you prefer constant electrical connection or portable operation for different job sites.
Weight
Weight differs significantly between these two rotary hammers. The corded Bulldog Xtreme weighs 11.5 pounds. This is a substantial amount for overhead or prolonged use. The GBH18V-22N weighs only 5.1 pounds when tool only. This makes the cordless model much lighter and easier to maneuver. The lighter weight reduces fatigue during extended drilling sessions. If you carry tools up ladders or work high, the lighter unit is a clear advantage for comfort and control.
Impact Energy
Impact energy determines how fast the tool breaks through concrete. The corded Bulldog Xtreme delivers 2-1/5 foot-pounds of impact energy. This is a higher force output for tough materials. The GBH18V-22N provides 1.4 foot-pounds of impact energy. While still powerful, it is less forceful than the corded model. For dense concrete or rebar, the higher impact energy of the corded unit may penetrate faster. This spec favors the heavier, corded machine for pure breaking power.
Chuck Size
The chuck size dictates the maximum bit diameter you can use. The Bosch Bulldog Xtreme features a 1-inch chuck. This allows you to use larger diameter bits for bigger holes. The GBH18V-22N has a 3/4-inch chuck. This limits the maximum bit size to three-quarters of an inch. If your projects require drilling large diameter holes, the 1-inch chuck is necessary. For standard smaller holes, the 3/4-inch chuck is sufficient. This is a critical hardware difference for your specific bit inventory.
Motor Type
The motor technology affects efficiency and maintenance. The corded unit uses a standard brushed motor design typical for this class. The GBH18V-22N features a brushless motor. Brushless motors are more efficient and extend battery runtime. They also typically last longer with less maintenance. The corded model does not have this efficiency benefit, but it does not rely on batteries. The brushless motor in the cordless model offers better energy management and potentially longer tool life.
Which Bosch Rotary Hammer Fits You
Heavy duty concrete drilling needs
The Bosch Bulldog Xtreme delivers 2-1/5 ft.-lbs. of impact energy, which is higher than the 1.4 ft.-lbs. of the GBH18V-22N. It also reaches 5,800 BPM compared to 4,675 BPM. If you need maximum force for large holes in concrete, this corded unit provides the raw power and continuous runtime without worrying about battery charge levels.
Lightweight tool for overhead work
The Bosch GBH18V-22N weighs only 5.1 lbs. as a bare tool, significantly lighter than the 11.5 lb. corded Bulldog. This reduced weight improves maneuverability and reduces fatigue during extended use. The brushless motor also helps maximize battery runtime, making it a practical choice for jobs where you need to move frequently or work overhead.
Users wanting kickback control
The Bosch GBH18V-22N includes kickback control technology to reduce sudden tool reactions when bits bind. This feature is not listed for the corded Bulldog Xtreme. If you drill in varying conditions where binding is a risk, this safety mechanism offers better control. The variable-speed trigger also allows for accurate bit starting in this cordless model.
The products compared
Bosch Bulldog Xtreme 1-Inch SDS-Plus Rotary Hammer
Best for: Heavy duty concrete drilling
- Power Source
- 7-1/5 Amps (corded)
- Impact Energy
- 2-1/5 Ft.-Lbs.
- Chuck Size
- 1 In.
- Bit System
- SDS-plus
- Blows Per Minute
- 0-5,800 BPM
- Weight
- 11.5 lbs.
View on Amazon: Bosch Bulldog Xtreme 1-Inch SDS-Plus Rotary Hammer Affiliate link
This Bosch 11255VSR-RT is a corded rotary hammer designed for heavy-duty drilling and chiseling. It delivers 2.2 foot-pounds of impact energy and reaches 5,800 blows per minute. The 7.2-amp motor provides consistent power without battery limitations. Weighing 11.5 pounds, it offers substantial force for masonry work. The variable speed trigger allows for precise control during operation.
Pros
- High impact energy of 2.2 foot-pounds
- Variable speed trigger for control
- Corded 7.2-amp motor ensures continuous power
- 1-inch SDS-plus chuck capacity
Cons
- Heavy 11.5-pound build reduces maneuverability
- Corded design limits mobility on site
- Renewed status may show cosmetic wear
Good fit if
- You need maximum impact force for large holes
- You work in areas with easy power access
- You prefer corded reliability over battery management
Skip if
- You require lightweight tools for overhead work
- You need battery-powered flexibility
- You want brand-new condition items
Verdict: Bosch 11255VSR-RT 1-Inch Corded Rotary Hammer suits professionals drilling large holes in concrete where corded power and high impact energy are priorities. It is ideal for stationary heavy-duty tasks rather than agile, mobile jobs.
Bosch 3/4-Inch Brushless SDS-Plus Rotary Hammer
Best for: Concrete drilling with existing batteries
- Power Source
- 18V
- Impact Energy
- 1.4 ft.-lbs.
- Chuck Size
- 3/4 In.
- Bit System
- SDS-plus
- Motor Type
- Brushless
- Battery Included
- No (bare tool)
View on Amazon: Bosch 3/4-Inch Brushless SDS-Plus Rotary Hammer Affiliate link
This bare tool rotary hammer features a brushless motor and delivers 1.4 ft.-lbs. of impact energy. It weighs 5.1 lbs. without the battery, offering maneuverability on the jobsite. The variable-speed trigger allows for accurate bit starting. You get 0-4,675 no-load bpm and 0-1,050 no-load rpm. It suits users needing heavy-duty concrete drilling with efficient runtime.
Pros
- Brushless motor maximizes battery runtime
- 1.4 ft.-lbs. of impact energy
- Kickback control reduces sudden reactions
- Anti-vibration system for comfort
Cons
- Sold as a bare tool without battery
- Heavier than comparable 12V models
- No included carrying case
Good fit if
- You need high impact energy for concrete
- You already own compatible 18V batteries
- You prioritize brushless motor efficiency
Skip if
- You require a complete kit with batteries
- You need a lighter tool under 4 lbs
- You prefer hammer drills over rotary hammers
Verdict: Bosch 18V Brushless SDS-plus Rotary Hammer fits professionals drilling into concrete who already have 18V batteries. Its brushless motor and high impact energy make it a capable tool for demanding jobsites.
Specifications side by side
| Spec | Bosch Bulldog Xtreme 1-Inch SDS-Plus Rotary Hammer | Bosch 3/4-Inch Brushless SDS-Plus Rotary Hammer |
|---|---|---|
| Power Source | 7-1/5 Amps (corded) | 18V |
| Impact Energy | 2-1/5 Ft.-Lbs. | 1.4 ft.-lbs. |
| Chuck Size | 1 In. | 3/4 In. |
| Bit System | SDS-plus | SDS-plus |
| Motor Type | not stated | Brushless |
| Battery Included | not stated | No (bare tool) |
| Blows Per Minute | 0-5,800 BPM | 0-4,675 BPM |
| Weight | 11.5 lbs. | 5.1 lbs. |
| Variable Speed | Variable speed | Variable-speed trigger |
| Voltage | not stated | 18V |
| Included Tools | Rotary Hammer | Rotary Hammer |
| Bit Type | SDS-Plus | SDS-Plus |
| Dimensions | 24 × 12 × 5.5 inches | 11.5 × 3.25 × 8.1 inches |
| Size | 1 | 11.5" in |
| Color | Black Blue | Black |
| Model | 11255VSRRT | GBH18V-22N |
Frequently asked questions
Which rotary hammer is lighter and easier to handle for overhead work?
The Bosch GBH18V-22N is the lighter option for agile tasks. It weighs only 5 pounds, making it significantly easier to manage than the corded model. The Bosch Bulldog Xtreme 1-Inch weighs 11.5 pounds. Its heavier build provides stability for stationary drilling but reduces maneuverability for overhead or tight-space jobs.
Does the cordless model come with a battery included in the box?
No, the Bosch GBH18V-22N is sold as a bare tool. You must supply your own 18V batteries to operate it. This design benefits users who already own the Bosch 18V system. The corded Bosch Bulldog Xtreme requires no batteries, as it plugs directly into a standard electrical outlet for continuous power.
What is the maximum hole size each tool can handle in concrete?
The Bosch Bulldog Xtreme features a 1-inch chuck capacity. It is designed for heavy-duty concrete drilling and larger diameter holes. The Bosch GBH18V-22N has a 3/4-inch chuck size. Both use the SDS-plus bit system, but the corded model offers greater capacity for larger structural drilling needs.
Which tool is better if you already own Bosch 18V batteries?
The Bosch GBH18V-22N is the better choice for existing battery owners. It utilizes the 18V brushless motor system, allowing you to use your current batteries. This avoids the cost of purchasing new power sources. The corded Bulldog Xtreme does not accept batteries, so it offers no compatibility with your existing cordless inventory.
How do the physical dimensions compare between the two rotary hammers?
The corded Bosch Bulldog Xtreme is larger, measuring 24 inches in length and 12 inches in width. The cordless GBH18V-22N is more compact at 11.5 inches in length and 3.25 inches in width. The smaller footprint of the brushless model makes it easier to store and transport in tight workspaces.
Is the cordless model suitable for professional daily use on jobsites?
Yes, the Bosch GBH18V-22N is built for demanding jobsites. Its brushless motor provides efficiency and durability for professional concrete drilling. The tool delivers high impact energy suitable for serious work. It fits professionals who need mobile power without sacrificing the performance required for daily commercial construction tasks.