Description
Overview
The Bosch Bulldog Extreme 1″ SDS Plus (11255VSR) is designed for rotary hammer drilling and chiseling applications in concrete, masonry, and similar hard materials.
| Specification | Value |
|---|---|
| MPN | 11255VSR |
| Brand | Bosch |
| Chuck Style | SDS-Plus |
| Handle Type | D-Handle |
| Motor Current | 8 A |
| Voltage | 120V AC |
| No-Load Speed | 0 1,300 RPM |
| Blows per Minute | 0 5,800 BPM |
| Impact Energy | 2.0 ft-lb |
| Solid Bit Capacity in Concrete | 1 in |
| Optimal Drilling Range in Concrete | 3/16 in 5/8 in |
| Modes of Operation | Hammer and Rotate, Hammer Only, Rotate Only |
| Clutch Style | Integral Anti-Kickback Clutch |
| Auxiliary Handle Positions | Continuous (36 positions) |
| Cord Length | 13 ft |
| Weight | 11.60 lb |
| Kit Contents | Bare Tool |
Technical Features
- 7.5 Amp Motor at 01,300 RPM and 05,800 BPM: Variable speed output allows the tool to be matched to application demand, reducing material damage and improving bit control.
- SDS-Plus Bit System with Tool-Free Bit Change and Auto Locking: Eliminates the need for a chuck key, reducing downtime during bit swaps and ensuring secure bit retention under load.
- 2.0 ft-lb Impact Energy at up to 5,800 BPM: Delivers consistent percussion force for efficient material removal in concrete and masonry up to 1 in capacity.
- Three-Mode Multifunction Selector (Rotation Only, Rotary Hammer, Hammer Only): Enables the tool to perform drilling, hammer drilling, and chiseling from a single unit, reducing the need for multiple tools on site.
- Integral Anti-Kickback Clutch: Disengages the drive train upon binding to reduce torque reaction at the handle, improving operator safety.
- Vario Lock Positioning 36 Auxiliary Handle Positions: Continuous handle rotation with 36 locking points allows the operator to optimize grip angle for overhead, horizontal, or downward drilling.
- D-Handle Design: Provides a stable, ergonomic grip that is particularly suited to overhead and downward drilling orientations.
- Patented Cord Turret with 35-Degree Pivot: Relieves stress at the cord entry point, extending cord service life and improving maneuverability in confined work areas.
- Variable-Speed Trigger with Reverse: Enables controlled bit starting to prevent surface skipping and allows reverse rotation for fastener removal or bit extraction.
- 13 ft Cord Length: Extends reach on the job site without requiring an immediate extension cord in many standard work configurations.
Applications
- Rotary hammer drilling in concrete for anchor bolt installation, rebar doweling, and utility penetrations within the 3/16 in 5/8 in optimal range.
- Full-capacity solid bit drilling in concrete up to 1 in diameter.
- Light chiseling and surface preparation using hammer-only mode.
- General masonry drilling using rotation-only mode with appropriate SDS-Plus bits.
- Overhead drilling applications where the D-handle and multi-position auxiliary handle provide stabilized control.
Reviews
There are no reviews yet.