Bauer 20V Cordless Drill 1791C-B1 | Professional Power Tool
Our Bauer 20V Cordless Drill 1791C-B1 combines power and precision for demanding drilling and fastening applications. This professional-grade tool features a variable speed trigger that gives you complete control over every task, from delicate work to heavy-duty drilling.
We designed the 1791C-B1 with a compact, lightweight body that reduces user fatigue during extended use. The ergonomic grip and balanced weight distribution make this drill ideal for professionals who need reliable performance throughout the workday. Whether you’re working on cabinetry, framing, or general construction, this drill delivers consistent torque and speed control.
- 20V lithium-ion battery system for extended runtime and fade-free power
- Variable speed trigger with 0-550 RPM for precise control
- 3/8-inch keyless chuck accepts standard drill and driver bits
- 18+1 clutch settings for optimal torque control in multiple materials
- LED work light illuminates dark workspaces and tight corners
Power System & Battery Compatibility
The Bauer Tools Cordless Drill 1791C-B1 runs on our universal 20V lithium-ion platform, which means your battery works across our entire cordless tool lineup. This interchangeable system reduces your investment in multiple battery packs and chargers.
Our lithium-ion cells maintain consistent voltage throughout the discharge cycle, so you get the same drilling power whether the battery is at 100% or 20% capacity. The 20V system delivers enough torque for wood boring up to 1-1/4 inches and steel drilling up to 3/8 inches. We include battery level indicators on every 20V battery pack so you can monitor remaining runtime at a glance.
Chuck System & Bit Compatibility
We equipped the 1791C-B1 with a professional 3/8-inch keyless chuck that accepts all standard hex shank and round shank bits. The ratcheting chuck design provides secure bit retention with simple hand-tightening—no separate chuck key required.
The single-sleeve chuck mechanism allows for one-handed bit changes, keeping your workflow efficient when switching between drilling and driving tasks. The chrome-plated steel jaws grip bits firmly to prevent slippage during high-torque applications. This chuck handles twist drill bits, spade bits, hole saws, and all standard screwdriver bits without requiring adapters.
Clutch Settings & Torque Control
Eighteen Precision Settings
The 1791C-B1 features 18 numbered clutch positions that let you dial in exact torque output for different fastener sizes and materials. Lower settings prevent overdriving small screws in soft materials like drywall or softwood. Higher settings deliver maximum torque for lag bolts and large fasteners in hardwood or engineered lumber.
We calibrated each clutch detent to provide repeatable, consistent results across multiple fasteners. The numbered collar rotates smoothly with positive clicks at each position. A dedicated drill mode bypasses the clutch entirely for continuous rotation during boring operations.
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Common Questions About the 1791C-B1 Drill
The 3/8-inch chuck on the Bauer Tools Cordless Drill 1791C-B1 accepts drill bits up to 3/8-inch diameter. For practical drilling capacity, we recommend up to 1-1/4 inches in wood with spade bits and up to 3/8 inches in steel with twist bits. Larger hole saws will fit the chuck but may require a high-capacity battery for optimal performance.
Yes, your purchase includes one 20V lithium-ion battery pack and a standard wall charger. The kit also includes a double-ended screwdriver bit and instruction manual. You can start working immediately after charging the included battery, which typically takes 60-90 minutes depending on capacity.
The 1791C-B1 is designed for wood, metal, and plastic drilling applications. For masonry, concrete, or brick, we recommend our <a href=”/hammer-drill-1992e-b/”>hammer drill models</a> that feature percussion drilling action. Standard rotary drills like the 1791C-B1 will struggle with masonry materials and may damage the chuck or motor when forced.
Battery runtime depends on the capacity of your battery pack and the intensity of your work. A 2.0Ah battery typically drives 200-300 deck screws or drills 40-60 holes in dimensional lumber. A 4.0Ah battery approximately doubles those figures. Lighter tasks like cabinet installation will yield longer runtime than heavy-duty boring operations.
The 18 numbered clutch positions control torque output and disengage when resistance reaches a preset level—ideal for driving screws without stripping heads or overdrive. Drill mode bypasses the clutch entirely for continuous rotation during boring operations. Use clutch settings for all fastening work and drill mode when making holes with twist bits or hole saws.
Yes, the forward/reverse selector switch is located above the trigger. Push the switch to the left for forward rotation (drilling and driving) or to the right for reverse (removing screws and backing out jammed bits). The center position locks the trigger to prevent accidental activation during storage or transport.
We offer replacement chucks, battery packs, chargers, belt clips, and other serviceable components through our parts department. Contact our customer service team with your drill’s model number for specific part availability and pricing. Most wear items like chuck jaws and trigger switches are available as individual replacement parts rather than requiring a complete tool replacement.