Bauer 1864E-B Disc Grinder | 7.5 Amp Angle Grinder
The Bauer Tools disc grinder 1864E-B is engineered for versatile metalworking, masonry cutting, and surface preparation. Its 7.5 amp motor delivers 11,000 RPM for fast material removal, while the compact design provides excellent maneuverability in tight spaces.
Our paddle switch with lock-on feature gives you precise control during extended grinding sessions, and the spindle lock makes wheel changes quick and tool-free. The auxiliary side handle can be mounted in three positions for optimal comfort and control, whether you're working on vertical surfaces or overhead applications.
Built for job site durability, the 1864E-B features a vented motor housing that dissipates heat during demanding tasks. The mesh intake guards prevent debris from entering the motor, extending tool life even in dusty environments. At just 4.2 pounds, this grinder balances power with all-day usability for professional contractors and serious DIY enthusiasts.
- 7.5 amp motor generates 11,000 RPM for aggressive material removal
- 4-1/2" wheel diameter accepts standard abrasive and diamond discs
- Paddle switch with lock-on button for continuous operation comfort
- Three-position auxiliary handle for vertical, horizontal, and overhead work
- Spindle lock enables tool-free wheel changes in seconds
Motor Power & Speed Performance
The 7.5 amp motor in the 1864E-B delivers professional-grade performance for cutting through 1/4″ steel plate, removing rust and paint, smoothing weld beads, and shaping masonry materials. At 11,000 RPM no-load speed, the disc maintains consistent surface speed for clean cuts and uniform grinding patterns.
Unlike lower-powered models, our motor maintains torque under load, preventing bog-down when you apply pressure during heavy stock removal. The direct-drive spindle eliminates power loss through gearing, transferring maximum energy to your grinding or cutting wheel. This efficiency reduces job completion time and minimizes user fatigue on multi-cut projects.
Wheel Compatibility & Changing System
The 1864E-B accepts all standard 4-1/2″ wheels with 7/8″ arbors, including Type 27 depressed-center grinding wheels, Type 1 flat cutting wheels, flap discs, wire wheels, and diamond blades for tile and concrete. Maximum wheel thickness is 1/4″ for grinding discs and 1/8″ for cut-off wheels.
Spindle Lock Mechanism
Our spindle lock button freezes the drive shaft so you can tighten or loosen the arbor nut with the included two-pin spanner wrench. The lock engages positively without requiring precise shaft positioning, and the hardened steel mechanism withstands repeated wheel changes without wearing. This system eliminates the need for two wrenches or impact methods that can damage the spindle threads.
Safety Features & Ergonomic Design
The paddle switch requires deliberate grip pressure to activate, preventing accidental starts when you set the tool down or reposition your hands. The lock-on button engages only after the trigger is fully depressed, adding a second intentional action before continuous operation begins. Releasing the paddle instantly cuts power, even with the lock engaged.
Our three-position side handle threads securely into mounting points at 90-degree intervals around the gear housing. This versatility lets you configure the grinder for right or left-handed operation, and position your support hand optimally for horizontal cuts, vertical grinding, or overhead work. The rubberized grip reduces vibration transmission and prevents the handle from rotating under torque.
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Common Questions About the 1864E-B Disc Grinder
The 1864E-B accepts 4-1/2 inch diameter wheels with 7/8 inch arbor holes. This includes Type 27 depressed-center grinding wheels, Type 1 flat cut-off wheels, flap discs, wire wheels, and diamond blades.
Maximum wheel thickness is 1/4 inch for grinding applications and 1/8 inch for cutting wheels. Always verify the wheel's RPM rating meets or exceeds 11,000 RPM before installation.
Yes, the grinder works with diamond blades designed for tile, concrete, pavers, and brick. Use continuous-rim diamond wheels for clean cuts in tile and segmented turbo blades for faster cutting in concrete and masonry.
For wet cutting applications that reduce dust, attach a water-feed accessory compatible with 4-1/2 inch grinders. Always wear appropriate respiratory protection when dry-cutting masonry materials, as silica dust poses serious health risks.
Unplug the tool, then press the spindle lock button on the gear housing. While holding the lock, use the included two-pin spanner wrench to loosen the arbor nut counterclockwise.
Remove the nut and outer flange, slide off the old wheel, then install the new wheel with the backing flange's raised hub facing the wheel. Thread the arbor nut back on hand-tight, engage the spindle lock, and snug the nut with moderate wrench pressure. Never overtighten, as this can crack abrasive wheels.
Always wear ANSI Z87.1 rated safety glasses or a face shield to protect against flying sparks and debris. Use cut-resistant work gloves, hearing protection, and closed-toe shoes with slip-resistant soles.
For grinding or cutting operations that generate dust, wear an N95 or P100 respirator appropriate for the material. Secure loose clothing and tie back long hair. Never bypass or remove the wheel guard except when installing specific accessories that require guard removal.
The grinder includes a Type 27 depressed-center grinding wheel for general metalworking, a two-pin spanner wrench for wheel changes, the three-position auxiliary side handle, and an operator's manual.
For specialized tasks, purchase cut-off wheels, diamond blades, flap discs, or wire wheels separately. Our grinding wheel sets provide assortments matched to common applications like metal fabrication, auto body work, or masonry cutting.
Yes, the grinder accepts rubber backing pads that support hook-and-loop sanding discs for surface preparation, paint removal, and finish work. Install a 4-1/2 inch rubber pad with 7/8 inch arbor on the grinder spindle, then attach sanding discs rated for angle grinder speeds.
Flap discs offer longer life than standard sanding discs and conform better to curved surfaces. Use 40-60 grit for aggressive stock removal, 80-120 grit for surface smoothing, and 180-240 grit for finish preparation before painting or coating.
For extension cord runs up to 50 feet, use 14 AWG wire. For distances from 50 to 100 feet, upgrade to 12 AWG to prevent voltage drop that reduces motor power and generates heat.
Outdoor job sites require cords rated for exposure with weather-resistant jackets. Always plug the tool directly into the extension cord before connecting the cord to the power source, and unplug in reverse order to prevent arcing at the connection points.