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For Maximum Drill Bit Size for Concrete
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Bosch Electric Rotary Hammers
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Style A |
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Style B |
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Style C |
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Style D |
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Style E |
Use the rotary-only mode for general purpose drilling and driving fasteners (requires a chuck adapter or a magnetic bit holder). In rotary-percussion mode, the tool provides both a rotary drilling and hammering action. In the percussion-only mode, the tool provides only the hammering action. Use this mode when working with chisels and other masonry tools (see Chisels for Rotary Hammers). All have a variable speed motor—the further you depress the trigger, the faster the drill rotates.
For Spline Bit Shanks—Designed to drill larger holes than a SDS-Plus hammer, these models use spline-shank drill bits (see Spline-Shank Masonry Drill Bits and Spline-Shank Masonry Core Drill Bits). A powerful and durable hammer mechanism lets you drill deeper, larger holes in masonry and concrete in less time than with hammer drills.
For SDS-Plus Bit Shanks—Also known as SDS-Drive rotary hammers, these are lightweight and ideal for overhead work and drilling smaller holes. A powerful and durable hammer mechanism lets you drill deeper, larger holes in masonry and concrete in less time than with hammer drills. Use with SDS-Plus drill bits. Note: SDS-Plus and SDS-Max bits are not interchangeable.
For SDS-Max Bit Shanks—A deeper drive system minimizes wobble for straighter, more accurate holes and better overall performance to other rotary hammers. A powerful and durable hammer mechanism lets you drill deeper, larger holes in masonry and concrete in less time than with hammer drills. Use with SDS-Max drill bits (see SDS-Max-Shank Masonry Drill Bits and SDS-Max-Shank Core Drill Bits). Note: SDS-Plus and SDS-Max bits are not interchangeable.
12 Chisel Lock Positions and 36 Chisel Lock Positions—A chisel lock allows you to choose from 12 or 36 chisel positions to match the angle of many surfaces.
Model Number RH1255VC—Model number RH1255VC provides smooth starts and won't slow down as you drill deeper.
Built-In Safety Clutch—A built-in safety clutch protects you and the hammer if the bit gets stuck in your material.
Vibration Reduction—These rotary hammers have a vibration reduction system for increased user comfort, provides smooth starts, and won't slow down as you drill deeper.
For Max. Rotary Hammer Bit Size for Concrete | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Style | Drill Bit | Core Drill Bit | Max. No-Load Rotational Speed, rpm | Max. No-Load Blows per min. | No. of Chisel Lock Positions | Overall Lg. | Wt., lb. | Current, amp | Gear Housing Material | Mfr. Model No. | Certification | Features | Each | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
For Spline Bit Shanks | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
A | 1 5/8" | 4 1/8" | 300 | 2,900 | 12 | 18 13/16" | 14.5 | 13 | Metal | 11265EVS | UL Listed | Built-In Safety Clutch Chisel Lock Cushioned Grip Service-Reminder Light Vibration Reduction | 0000000 | 0000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
For SDS-Plus Bit Shanks | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
B | 1" | — | 1,300 | 5,100 | 36 | 15" | 6.4 | 8 | — | GBH2-26 | CSA-US Certified, UL Listed | Built-In Safety Clutch Chisel Lock | 00000000 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
C | 1" | — | 1,300 | 5,800 | 36 | 17 1/4" | 7 | 7.5 | — | 11255VSR | UL Listed | Built-In Safety Clutch Chisel Lock | 00000000 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
D | 1 1/8" | — | 900 | 3,800 | 36 | 13 5/8" | 8 | 8 | — | RH328VCQ GBH3-28 | UL Listed | Built-In Safety Clutch Chisel Lock | 00000000 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
For SDS-Max Bit Shanks | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
E | 1 9/16" | 4" | 300 | 2,900 | 12 | 19" | 15.2 | 12 | Metal | RH540M | UL Listed | Built-In Safety Clutch Chisel Lock | 00000000 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
E | 2" | 6" | 200 | 2,150 | 12 | 23 1/2" | 30 | 15 | Metal | RH1255VC | C-UL Listed, CSA Certified, CSA-US Certified, ETL Listed, UL Listed | Built-In Safety Clutch Chisel Lock Cushioned Grip Service-Reminder Light | 00000000 | 00000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Bosch Electric Hammer Drills
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Just push a switch and this tool will change from a standard electric drill to a hammer drill.
The rotary-only mode is for general purpose drilling and driving fasteners. Use this mode with standard drill bits for wood and metal. In rotary-percussion mode, the tool provides both a rotary drilling and hammering action. The hammering action pounds concrete and masonry, which breaks up the material while it drills. Use this mode for drilling masonry materials using carbide-tipped masonry drill bits.
This drill has a variable speed motor—the further you depress the trigger, the faster the drill rotates.
Keyed Chuck—Drills with keyed chuck can be tightened with the included key.
For Max. Bit Shank Size | For Max. Drill Bit Size for Concrete | For Max. Drill Bit Size for Steel | Max. No-Load Rotational Speed, rpm | Max. No-Load Blows per min. | Chuck Type | Chuck Key Included | Current, amp | Gear Housing Material | Overall Lg. | Wt., lb. | Mfr. Model No. | Certification | Features | Each | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Pistol Grip | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1/2" | 3/4" | 1/2" | 3,200 | 51,000 | Keyed | Yes | 8.5 | Metal | 13 1/2" | 6 | HD18-2 | CSA Certified, UL Listed | Auxiliary 360° Handle | 0000000 | 0000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||