Model#: BSHN11255VSR

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Bosch 11255VSR 1 in. SDS-plus D-Handle Bulldog Xtreme Rotary Hammer

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Product Overview


Doing the Job Every Day - Bosch has the right tool to optimize work on the jobsite, including the Bosch 11255VSR Bulldog Xtreme Rotary Hammer. The technology built into every Bosch tool drives maximum power and performance. From anchoring to large material breaking, this Bosch Bulldog Xtreme hammer gets the job done right the first time.
Power and Design Combined- A powerful 7.5 Amp motor (0-1300 RPM; 0-5800 BPM) is capable of delivering 2.0 Ft./Lbs. of impact energy. The rotary hammer's D-handle design is ideal for overhead and downward drilling applications.
Many Modes- The Bosch 11255VSR 1 In. SDS-plus Bulldog Xtreme Rotary Hammer features three modes of operation: rotary hammer, rotation only and hammer only. Additionally, Vario-Lock positioning rotates and locks the chisel into 36 different positions to optimize working angle in hammer-only mode.
  • 7.5 amp motor produces 0 - 1,300 RPM and 0 - 5,800 BPM
  • SDS-plus bit system Tool-free bit changes with automatic bit locking, dust protection and maximum impact energy transfer rate
  • Multi-function selector - 3 modes of operation, rotation only, rotary hammer and hammer only mode
  • Variable-speed reversing trigger - For accurate bit starting, as well as removing fasteners or bound bits
  • Vario-Lock positioning - Rotates and locks chisel into 36 different positions to optimize working angle
  • D-handle design - For extra control, ideal for overhead and downward drilling applications
  • Patented rotating brush plate - Provides equal power in forward and reverse
  • Patented cord turret - 35    pivot for added flexibility and longer cord life
  • Integral clutch - Helps minimize torque reaction
  • Double insulated, UL listed, complies to OSHA
  • 1 in. SDS-plus Rotary Hammer - 11255VSR
  • Auxiliary Handle - 2 602 025 141
  • Depth Gauge - 1 613 001 010
  • Carrying Case - 1 615 438 396


Series: Bulldog
Amperage: 7.5
BPM: 0 - 5,800
Chuck Type: SDS-Plus
Impact Energy: 2.2 ft-lbs.
Max. Capacity (Concrete): 1 in.
Max. Capacity (Steel): 1/2 in.
Max. Capacity (Wood): 3/4 in. - 1 in.
Power Type: Electric
RPM: 0 - 1,300
Voltage: 120V



4.8 / 5.0
203 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Yes, I would recommend this to a friend (122)
No, I would not recommend this to a friend (2)
Powerful (109)
Lightweight (76)
Easy To Use (62)
Ergonomic Design (50)
Heavy (2)
Loud (1)
Best Uses
Frequent Use (63)
Jobsite (5)
Heavy Duty Requirements (4)
Small Projects (4)
nothing comes close
I had owned this bulldog for seven years using it daily installing handrails in concrete, and apparently some one had to have it worse than me, so I purchased several competitor type hammer drills to no avail finally realized if you need to get the job done right! get the right tool for the job. purchased a new bulldog and have had absolutely not one problem. this bulldog hammer drill from bosch is definitely getting it done right.
February 10, 2016
Originally posted at
Yes, I would recommend this to a friend
Ergonomic Design
Best Uses
Frequent Use
Great concrete drill. Best value for the quality.
Don't be cheap with the bits and it will do what it's supposed to.
I like it's versatility and power. For some reason it seems to be quieter than other hammer drills. Be aware that it takes several hrs of use for the braking period (read the manual), but it will perform very well out of the box. It may not be powerful enough for heavy construction, but then again, it's not designed to do that. Get a bigger drill if that is what you need...

I trust CPO tools...My RECON works perfectly every time.
February 23, 2010
Completely satisfied with this hammer drill
I have actually owned this drill for several years. It has worked flawlessly and I'm always amazed at what I can accomplish it. I have continued to add sds bits to my collection.
May 30, 2016
Originally posted at
Takes the Abuse
I have had a Bosch Bulldog for many years and have drilled thousands of holes with it - often in very difficult circumstances. It has survived being tossed around on concrete and amongst rubble. It has endured rain and being dropped in the mud on many occasions. But it just keeps on going.

While it isn't the fastest hammer drill in the world, it drills holes at an acceptable rate and stands up to whatever conditions you may throw at it.
June 21, 2011
Originally posted at
Yes, I would recommend this to a friend
Ergonomic Design
Smooth, powerful and lightweight tool
I purchased this drill specifically to build finished walls in my basement. I needed to drill holes into 60 year old concrete to install Tapcon masonry screws to attach studs to the outside walls and sill plates to the floor. In the past I had used small non-SDS hammer drills which took excessively long to drill 3/16 holes. With the Bosch SDS drill and Bosch SDS bits it takes about 8-10 seconds per hole going about 5 inches deep. It is smooth and yet very lightweight. So far I have drilled 20 holes using the same Bosch SDS bit. This drill will be used extensively for several upcoming basement projects and possibly outdoor projects where drilling into concrete is a requirement. My new Bosch drill was one of the best and most time saving purchases I have ever made.
September 16, 2009
Built tough
I bought this tool 2 months ago after trying a similar product from Ryobi.There is no comparaison between the 2 tools.The Bosch has more power and endurance and the D handle is more confortable :you have a better control when you are using a chisel.I would recommand this tool to any serious DIY.
November 15, 2016
Originally posted at
Yes, I would recommend this to a friend
Easy To Use
Best on the market
Have owned this hammer drill for 7 years and has never skipped a beat. I have tried competitors and this is by far the best on the market.
August 18, 2015
best tool
best tool for pulling up old tile ive used sofar !!!!!!!
January 30, 2017
Originally posted at
Yes, I would recommend this to a friend
Easy To Use
Great tool to have around
For small chipping chores and ripping up tile this tool is excellent. I wound up using it on 3 project right after delivery, removing old floor tiles, chipping through a block wall to repair a leaking outside water pipe and breaking up some large limerick stones that were buried near my homes main water service line. Using 3 different types of chisels, the tool made short and easy work of each project. It was impressive. It won't get daily use, but having a hammer drill on hand definitely makes chipping and breaking jobs easier. The price on this Bosch hammer drill was big selling point for me. I prices them out all over and wanted this model. CPO had the best price and free ,fast shipping. I will continue to buy my recon tools from CPO. haven't been let down yet.
October 16, 2013
Great tool
Great tool for the price. Does a lot better job then the same tool for other manufacturers that cost a lot more
June 20, 2017
Originally posted at

Questions & Answers

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Browse 12 questions Browse 12 questions and 15 answers
What's the difference between a Bosch Bulldog Hammerdrill, Model 11255 VSR, and a Bosch 11255 VSR RT
BILLY on Mar 2, 2015
BEST ANSWER: The Bosch 11255vsr rt is reconditioned and the other unit is new. Both of the units carry the same 1 year warranty.
Is there an adapter so smooth wood drill bits can be used?
Francis on Nov 1, 2016
BEST ANSWER: Yes there is !!!! Bosch makes a sds to 1/2" chuck that will take any drill bit so you can use it like a 1/2" drill
I own a Bosch 5/8" 11210 VSR. Will the SDS bits I have for the 11210 fit this?
Sparky Jules on Mar 29, 2016
BEST ANSWER: Yes, they are compatible. Please note that any SDS Plus bit will work with this hammer
Will this accept a 1/2 inch diameter drill bit? I mistakenly thought the 1-inch reference meant it would accept a drill bit with a shank of up to one inch. Looks like we won't be able to use our soil drill bit that has a half-inch diameter shank. :-( Please clarify...
Love2hike on Sep 16, 2015
BEST ANSWER: The Bosch 11255VSR requires SDS Plus bits. It is a specific system that has grooves in the shank of the bit to lock the bit into the chuck. This drill does not have a keyless chuck to tighten down onto a regular drill bit.SDS-Plus bits must be used, and there are a few made that have a 1/2in diameter, for example the Bosch model HC2084
How do I find instruction manuals for Boshhammer Buldog Xtream
None on Mar 12, 2015
BEST ANSWER: Please copy the following link in your browser to download the manual for the Bosch 11255vsr:
what does the 1" stand for? the other models i noticed go up and down in inch size but what is it the size of? thank you
Frank on Sep 30, 2012
BEST ANSWER: One Inch is the maximum through hole diameter this tool is rated to drill in concrete.