Three characteristics describe the new Bosch 1-inch SDS-plus® Bulldog Xtreme™ Rotary Hammers – fastest, longest lasting and most productive. For concrete drilling, professionals have depended on the Bosch Bulldog™ for more than 25 years. Today, as the market leader and innovator, Bosch continues to provide the best with the Bosch Bulldog Xtreme Rotary Hammers in both D-handle (11255VSR) and Pistol-Grip (11253VSR) designs.

For rotary hammers, speed and long life are the top requirements. And the Bosch Xtreme answers the call with a total system improvement. Faster than the competition, this means significant time saved over a full days drilling. And in terms of life, the new Bosch Xtreme lasts longer than any key competitor in its class, period! Convert that into productivity and replacement tool dollars, and there is no competition. (Independent testing by Trace Laboratories in 5000 PSI concrete – April/May 2005)

To achieve such a competitive advantage, Bosch truly made a total system improvement. Vital components such as the piston, striker, impact bolt and guide tube are “dialed in” with tight tolerances to remain concentric, smoothly transfer impact energy and last longer. Combine this with a more powerful and better cooled 7.2 AMP motor, and drilling speeds also increase. Additionally, reinforced gearing and more gear teeth increase tool life and enable higher load carrying capacities for better performance. When the system hits harder (2.2 ft. lbs. at 0-5,800 BPM), drills faster (0-1,300 RPM) and is consistently on target, users see results measured in dollars, as well as holes drilled.

For general contractors, electricians, HVAC contractors, window and door installers and façade builders, the Bulldog Xtreme offers a world of application opportunities. Some include drilling for Tapcons for brackets and junction boxes, Redi-Drives for window frames and signage, sleeve anchors in brick and block-base materials for support, and wedge anchors for precast panels (tilt up) or stud walls. Others may include dowling applications, class capsules when installing heavy machinery, LDTs for racking and seating or even simple drop-in anchors for pipe and cable tray support.

At the top of its class, the Bulldog Xtreme optimal drilling range in concrete is 3/16-inch to 5/8-inch with a solid bit capacity of 1-inch and thin wall core capacity of 2-5/8-inches. At only 6.7 lbs and 17.25-inches (d-handle) or 6.4 lbs and 14.75-inches (pistol grip), these tools bring a lot of productivity to the table for their size.

The on-tool features of the 11255VSR/11253VSR Bulldog Xtreme models also make extreme difference when it comes to deciding which tool to buy. Such features include the highly successful patented rotating brush plate, which provides equal power in forward and reverse for removing bound bits, plus adds significantly longer brush life. The patented cord turret rotates 35 degrees on a ball joint for added cord durability. Each Bosch invented and industry standard SDS-plus tool holder offers tool-free bit changes with automatic bit locking, dust protection and maximum impact energy transfer. An integral clutch helps minimize torque reaction. And a three-mode selector makes changes between rotary hammer, hammer-only or rotation-only modes quick and easy.

Other features include a soft-grip trigger handle and a 360-degree soft-grip auxiliary handle with built in quick release depth gauge for better control and comfort. A variable-speed trigger allows accurate bit actuation in addition to better control when removing fasteners or bound bits.