Bosch Cutoff Saw GCS18V-230N 9 Inch 18V Brushless (3.3 Inch Depth 7/8 Arbor Water Feed Masonry Concrete Metal Cutting Cordless Bare Tool)
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Bosch GCS18V-230N 18V Brushless 9-Inch Cordless Concrete and Metal Cutoff Saw Bare Tool
The Bosch GCS18V-230N 18V Brushless 9-Inch Cordless Cutoff Saw cuts cured concrete, rebar, steel pipe, masonry pavers, and structural cinder block with a maximum cutting depth of up to 3.3 inches. Powered by an industrial high-torque brushless motor engineered for heavy demolition and utility fabrication, this cordless cutoff tool delivers gas-free indoor cutting without hazardous engine emissions or pull cords. Featuring an integrated wet-cutting water feed with an onboard shut-off valve, an enclosed waterproof battery compartment, a 6-position adjustable wheel guard, and an ergonomic wraparound handle, this 11.8-pound portable saw equips concrete contractors, masons, and commercial metal fabricators with balanced cutting control. **Battery and charger sold separately.
Best Used For:
- Concrete Slab & Paver Cutting: Making up to 3.3-inch deep relief cuts and sizing brick pavers using the wet-cut water attachment to suppress airborne silica dust.
- Rebar & Structural Steel Sectioning: Slicing heavy-duty steel pipe, structural rebar cages, and metal studs cleanly on jobsites without trailing power cords.
- Indoor Demolition & Plumbing Trenching: Sinking floor cuts in basements and occupied commercial facilities where gas-powered saw exhaust is prohibited.
Key Performance & Safety Features
- High-Output Brushless Motor: Delivers corded-equivalent cutting power and constant rotational speed under heavy concrete and steel loads.
- Integrated Wet-Cut Water Delivery: Directs water spray directly to both sides of the blade with an accessible brass shut-off valve for OSHA Table 1 silica compliance.
- 6-Position Adjustable Blade Guard: Rotates smoothly around the 9-inch wheel to optimize sightlines, spark deflection, and ergonomics across varying approach angles.
- Sealed Waterproof Battery Bay: Enclosed compartment shields 18V lithium-ion battery packs from water slurry, concrete slurry, and jobsite dust intrusion.
- Spindle Lock Lever Mechanism: Simplifies wheel swaps by locking the 7/8-inch arbor firmly for fast blade exchanges using the included on-tool wrench.
- AMPShare™ System Compatibility: Operates seamlessly across the global multi-brand AMPShare and Bosch Professional 18V battery platforms.
What's Included
- (1) Bosch GCS18V-230N 18V Brushless 9-Inch Cutoff Saw (Bare Tool)
- (1) 9-Inch Diamond Masonry Cutting Wheel (DB944)
- (1) 9-Inch Abrasive Metal Cut-Off Wheel (TCW1S900)
- (1) Integrated Water Feed Line with Shut-Off Valve
- (1) Heavy-Duty Lock Nut Wrench
Technical Specifications
| Specification | Detail |
|---|---|
| Model Number / Part ID | GCS18V-230N (Cutoff Saw) |
| Operating Battery Voltage | 18V Lithium-Ion (AMPShare™ Platform) |
| Cutting Wheel Diameter | 9.00 in (9 in / 230 mm) |
| Maximum Depth of Cut | 3.30 in (3-5/16 in / 83.8 mm) |
| Blade Arbor Hole Size | 0.875 in (7/8 in / 22.23 mm) |
| Motor Architecture | High-Torque Maintenance-Free Brushless |
| Blade Guard Positions | 6-Position Adjustable Guard |
| Dust Management System | Integrated Wet-Cut Water Attachment with Valve |
| Overall Tool Length | 26.10 in (26-1/8 in / 66.3 cm) |
| Overall Tool Height & Width | 12.10 in H x 8.50 in W (30.7 cm x 21.6 cm) |
| Bare Tool Weight | 11.80 lbs (5.35 kg) |
Pro-Tip: Connect a portable pressurized water tank to the integrated water shut-off valve when cutting cured concrete indoors; wet cutting completely suppresses respirable crystalline silica dust while lubricating diamond segments to prevent premature core warping.