Description
Bulky angle grinders lack cut-line visibility and score adjacent surfaces when trimming conduit inside crowded breaker boxes. The DEWALT 20V MAX 3 Inch cordless cut-off tool cuts light sheet metal, tile, and drywall in confined structural cavities. Limited motor torque stalls the cutting disc under heavy hand downforce, while small three-inch wheels wear out after brief cutting runs.
A compact brushless motor uses high-energy magnetic fields to drive the output spindle at 20000 RPM without internal brush degradation. A hardened steel bevel pinion gear transmits rotational velocity to the 3/8-inch arbor shaft supported by sealed ball bearings. The tool includes an adjustable dust collection shoe with an edge guide that maintains precise depth settings, while a forward and reverse selector button directs spark spray away from sensitive work zones.</p
Compact Cut-Off Matrix Drive Metrics
Mechanical installation work inside wall studs requires light hand tools that maneuver around conduit and piping. Reversible arbor spin keeps spark spray away from painted panels.
- 20-volt brushless motor delivers 20000 RPM to sever light metal rods and masonry products
- 3-inch diameter wheels clear 0.8 inches of cut depth to slice drywall and metal framing studs
- Reversible blade rotation directs shower of sparks away from operator clothes and line of sight
- Removable dust extraction shroud attaches to shop vacuums to catch airborne masonry dust
- Integrated bright LED illuminates tight mechanical closets and shadowed cut paths
- 3/8-inch arbor accepts standard cut-off discs, diamond tile blades, and carbide abrasive wheels
- 4.0 Ah compact battery pack provides prolonged cycle time without adding clumsy rear drag
Bench Load Telemetry Amperage Draw
The high-speed motor pulls 2.8 amps at nominal 18 volts DC during free-wheel rotation. Pressing a diamond wheel through half-inch cement backer board drops spindle speed from 20000 RPM down to 14200 RPM while current draw spikes to 16.5 amps. Sound output registers at 82 dBA at the ear without material contact, rising to 91 dBA under load. Thermal sensors shut off motor drive if continuous heavy cutting heats the pack beyond safe thresholds.
Field Service Trade-Offs Application Filter
Do not buy this tool to section heavy structural steel beams or thick rebar grids. Operators who twist the small abrasive wheel inside the cut slot snap discs and shatter the arbor retainer bolt. Clean masonry grit from the forward-reverse selector switch using compressed air blowguns. Inspect the dust collection shoe latch for plastic wear before plunge-cutting subfloor panels. Store unused cut-off wheels flat inside protective dry cases to prevent moisture degradation.
Warranty Protection Standard Package Items
A 3-Year limited warranty includes a one-year free maintenance contract. The tool bundle contains the bare cut-off tool, one 4.0 Ah battery pack, one charger, dust shroud shoe, three abrasive wheels, 7/16-inch arbor adapter ring, and storage bag.
