Bosch Angle Grinder GWS12-450PBD 4-1/2 Inch Corded Tool (12A Motor 11500 RPM Paddle Switch Brake KickBack Drop Control Metal Concrete Slabs Cutting)
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Bosch GWS12-450PBD 4-1/2" 12-Amp Ergonomic Angle Grinder with Paddle Switch
The Bosch GWS12-450PBD 4-1/2-inch ergonomic angle grinder delivers heavy-duty surface prep and cutting capability powered by a high-output 12.0-amp corded motor running at 11,500 RPM. Engineered with a multi-position no lock-on paddle switch, an electronic braking system, and sensor-based Drop Control, this variable-speed tool provides immediate wheel deceleration upon switch release or accidental jobsite drops. Outfitted with integrated KickBack Control and an anti-vibration auxiliary side handle, it protects operators during aggressive metal beveling, weld grinding, and masonry cut-off tasks.
Best Used For:
- Structural Steel Fabrication: Beveling thick plate steel, cutting structural rebar, and smoothing heavy weld seams at continuous high speeds.
- Concrete and Masonry Tuckpointing: Slitting mortar joints and cutting concrete pavers cleanly when paired with compatible Bosch dust extraction hoods.
- High-Safety Industrial Maintenance: Operating in safety-critical manufacturing plants where no lock-on deadman switches and rapid braking systems are strictly mandated.
Key Performance & Safety Features
- Powerful 12-Amp Motor: Produces up to 11,500 no-load RPM to maintain aggressive stock removal rates without stalling under heavy load.
- Comprehensive Sensor Protection: KickBack Control shuts off power during wheel binding, while Drop Control cuts the motor if the unit falls.
- Electronic Rapid Braking System: Brings rotating abrasive wheels to a complete stop within seconds after releasing the paddle switch.
- No Lock-On Paddle Switch: Ergonomic full-length deadman trigger provides versatile grip positions and stops operation when released.
- Anti-Vibration Side Handle: Dampens harsh harmonic vibrations transferred to the operator's hands during extended grinding sessions.
- Dual Guard System Included: Ships complete with both a Type A cutting wheel guard and a Type B grinding guard for complete application safety.
What's Included
- (1) Bosch GWS12-450PBD 4-1/2" Ergonomic Angle Grinder
- (1) Type A (41/1A) Cutting Wheel Guard
- (1) Type B (27) Grinding Wheel Guard
- (1) Anti-Vibration Auxiliary Side Handle
- (1) Backing Flange (for grinders with brake)
- (1) Lock Nut
- (1) Lock Nut Spanner Wrench
Technical Specifications
| Brand | Bosch Power Tools |
| Model Number | GWS12-450PBD |
| Motor Amperage | 12.0 A |
| Operating Voltage | 120V AC (60 Hz) |
| Wheel Diameter | 4-1/2 inches (114.3 mm) |
| No-Load Speed (RPM) | Up to 11,500 RPM (Variable Speed Selection) |
| Spindle Thread Size | 5/8" - 11 UNC |
| Switch Configuration | No Lock-On Paddle Switch (Deadman Style) |
| Safety Systems | KickBack Control, Drop Control, Restart Protection, Soft Start, Overload Protection |
| Tool Length | 12.87 inches (326.9 mm) |
| Tool Height | 4.29 inches (109.0 mm) |
| Tool Weight | 5.29 lbs (2.40 kg) |
Pro-Tip: When swapping between Type 27 grinding wheels and Type 1A cutting wheels, always pair the operation with its matching included guard to ensure 100% compliance with OSHA wheel containment standards.
