Bauer 1641-B Rotary Hammer — Professional-Grade Drilling & Chiseling Power
Our 1641-B rotary hammer is engineered for professionals who demand consistent power in concrete, brick, and masonry applications. The three-mode operation gives you rotation-only drilling, hammer-only chiseling, and combined rotary hammer action — all controlled by a single selector switch.
We built the 1641-B with a 7.5-amp motor that delivers 2.3 joules of impact energy, making it powerful enough for anchor installation, electrical box cutouts, and demolition work. The ergonomic side handle rotates 360 degrees to give you optimal leverage in tight spaces, while the anti-vibration system reduces operator fatigue during extended use. Whether you’re drilling pilot holes or breaking up tile, the 1641-B keeps you productive on demanding jobsites.
- 7.5-amp motor with 2.3 joules of impact energy for concrete and masonry
- Three-mode selector: rotation-only, hammer-only, rotary hammer drilling
- SDS-plus chuck system for fast bit changes without additional tools
- 360-degree rotating side handle with depth gauge for precise control
- Integrated anti-vibration technology reduces hand fatigue
Three-Mode Versatility for Every Application
The 1641-B rotary hammer gives you complete control over how you work. Rotation-only mode turns the tool into a standard drill for wood and metal, making it useful beyond masonry tasks. Hammer-only mode is ideal for chiseling tile, breaking up concrete, or positioning rebar — the percussion action does the work without rotation.
Rotary hammer mode combines both actions for fast drilling in concrete, brick, and block. This is where the 1641-B excels: the hammer mechanism pulverizes material while the rotation clears debris from the hole. We designed the mode selector to be accessible with your thumb, so you can switch functions without setting the tool down. For professionals managing multiple drill and driver tools on a single project, this versatility reduces the number of tools you need to carry.
SDS-Plus Chuck System & Bit Compatibility
Quick-Change Convenience
We equipped the 1641-B with an SDS-plus chuck that accepts industry-standard bits without requiring chuck keys or additional tools. The spring-loaded mechanism locks bits securely in place and releases them with a simple pull of the collar. This system is engineered for the repetitive bit changes common in electrical and plumbing work.
Accessory Range
The SDS-plus standard opens up a wide selection of drill bits, chisels, and core bits from multiple manufacturers. Our 1641-B works with bits ranging from 3/16-inch to 1-inch diameter, giving you flexibility for anchor holes, conduit passages, and demolition tasks. The tool accepts pointed chisels, flat chisels, and scaling chisels for finish removal and surface prep work.
Anti-Vibration Design & Operator Comfort
We built the 1641-B with internal dampers that isolate the hammer mechanism from the housing, reducing vibration transmission to your hands. The rear handle features a rubber overmold that absorbs residual vibration, while the 360-degree rotating side handle lets you position your support hand at the most comfortable angle for each task.
The depth rod slides into the side handle and locks at your desired measurement, ensuring consistent hole depth across multiple anchor points. This is particularly useful for electrical box installations where uniform depth prevents cracked boxes and ensures proper fastener engagement. The side handle’s D-shape provides a secure grip even when you’re applying significant forward pressure, and the tool’s 6.8-pound weight keeps it manageable during overhead work.
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What people are saying
Common Questions About the 1641-B Rotary Hammer
The 1641-B is rated for drilling holes up to 1 inch in diameter in concrete and masonry. For larger diameter holes, we recommend using a core bit with the appropriate pilot bit. The tool’s 2.3-joule impact energy and 7.5-amp motor provide sufficient power for most anchor and conduit installations without overloading the motor.
Yes, the 1641-B includes a dedicated hammer-only mode that disengages the rotation mechanism. This mode is designed for chiseling applications like tile removal, concrete scaling, and light demolition work. The tool accepts standard SDS-plus chisels in pointed, flat, and wide configurations. The hammer-only setting delivers 4,800 impacts per minute for efficient material removal.
Our 1641-B uses an SDS-plus chuck system, which is an industry-standard quick-change design. You’ll need SDS-plus shank drill bits and chisels, which are widely available from multiple manufacturers. Standard straight-shank bits will not fit this chuck. The SDS system allows tool-free bit changes and provides better power transfer during hammering compared to keyed chucks.
The 1641-B features internal dampers that isolate the hammer mechanism from the tool housing, reducing vibration transmission to the handles. The rear handle includes a rubber overmold grip that absorbs residual vibration. This system helps reduce operator fatigue during extended use, particularly important for trades professionals who use rotary hammers daily. The ergonomic design meets jobsite comfort standards without adding significant weight.
Yes, the 1641-B’s 6.8-pound weight and balanced design make it manageable for overhead work. The 360-degree rotating side handle lets you position your support hand at the most comfortable angle for ceiling-mounted anchor installations. We recommend taking breaks during extended overhead use and using a stable work platform or ladder to maintain proper body position.
Regular maintenance includes cleaning dust from the air vents after each use and applying fresh grease to the SDS-plus chuck every 40-60 hours of operation. We include chuck grease with the tool. The gear case should be serviced according to the schedule in the user manual, typically after 100 hours of use. Keep the carbon brushes inspected and replace them when they reach minimum length. Store the tool in its case to protect it from dust and moisture between jobs.
The 1641-B includes a rotation-only mode that disengages the hammer mechanism, allowing you to use it as a standard drill for wood and metal. However, the SDS-plus chuck only accepts SDS-shank bits, so you would need SDS-shank wood or metal bits rather than standard straight-shank bits. For frequent wood and metal drilling, a dedicated drill with a keyed or keyless chuck offers more bit compatibility.