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The DEWALT 20V MAX XR DCS438B brushless cut-off tool spins at 20,000 RPM, cuts a wide range of materials, and includes three wheels for metal, tile, and multi-material work.
Categories : tools
SKU : WOR-TOO-146
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The DEWALT 20V MAX XR DCS438B is a brushless, compact cut-off tool built for cutting metal, tile, stone, plastic, drywall, and fiber cement. With a no-load speed of 20,000 RPM and a 3-inch wheel, this bare tool is ready for tight corners and demanding materials.
The DCS438B makes wheel swaps fast. Press the spindle lock to keep the arbor stationary, then use the onboard hex wrench stored right on the tool to loosen the arbor nut. Remove the old wheel, place the new one, tighten, and release the lock. No hunting for tools.
The included dust shroud offers tool-free depth adjustment with mm and inch markings, so you can set consistent cuts. It also connects to DEWALT extractors via AirLock for dust-managed work.
With 550 MWO, this cut-off tool powers through a variety of materials. Forward and reverse settings let you change the direction of the cut for better control. The bright LED illuminates dark work areas.
Brushless motor with 550 MWO powers through demanding materials
20,000 RPM no-load speed for fast, clean cuts
Onboard hex wrench and spindle lock enable quick wheel changes
Adjustable dust shroud with AirLock connects to DEWALT extractors
Includes bonded abrasive, diamond multi-material, and tile wheels
LED: Yes
Model: DCS438B
Weight: 2.8 lbs
Reverse: Yes
Voltage: 20V MAX
Dimensions: 10 x 4 x 4 in
Motor Type: Brushless
Dust Shroud: Yes, with AirLock connection
Product Type: Cut-Off Tool (Bare Tool)
No-Load Speed: 20,000 RPM
Onboard Wrench: Yes
Wheel Diameter: 3 inches
Included Wheels: Bonded Abrasive, Diamond Multi-Material, Diamond Tile
Depth Adjustment: Tool-free with mm/inch markings
Seller: Workbench World
MPN: DCS438B
The DCS438B is a versatile addition to any kit. Use the bonded abrasive wheel for general metal cutting, the diamond multi-material wheel for masonry and tile, and the diamond tile wheel for precision tile work.
1. Engage spindle lock. 2. Loosen nut with onboard wrench. 3. Replace wheel. 4. Tighten and release. Always verify the wheel is rated for 20,000 RPM before use.
The AirLock-compatible shroud keeps dust out of the air and your lungs. Without it, cutting tile or concrete creates a health hazard—use the shroud and a connected extractor whenever possible.
Press the spindle lock so the arbor doesn't turn, then use the onboard hex wrench to loosen the nut. Swap the wheel, tighten the nut, and release the lock—the whole process takes under a minute.
It handles metal, tile, stone, plastic, drywall, and fiber cement. The included wheels are specifically designed for these materials.
Yes, the removable dust shroud has an AirLock connection that attaches to DEWALT extractors (sold separately).
No, this is a bare tool. It operates with any DEWALT 20V MAX battery and charger.
Turn the shroud ring to the desired depth; the markings are in both mm and inches for quick reference.
Cuts through anything.
This tool is great for cutting rebar and tile. It's fast and precise. The battery drains quickly, but that's expected.
I do metal fabrication and this cut-off tool has saved me a lot of time. The 20,000 RPM spins through steel like butter. The three included wheels are a nice touch, though I wish the metal wheel lasted longer. The tool itself is well balanced and the safety lock is easy to use. The only downside is that it eats batteries, but that's a known trade-off for cordless. With a 5Ah battery, I can get about 20 cuts through 1/2-inch rebar. Overall, I'm very happy with it.
I used the tile wheel to cut porcelain tiles for a backsplash. It made clean cuts without chipping. The tool is easy to handle. I'm impressed.
This is a powerful little saw. It cuts through metal quickly. The noise is quite high, so wear ear protection. The wheels are easy to change. Good overall.
I've used this to cut concrete backer board and metal studs. It's very reliable. It's straightforward. The included wheels are decent.
I bought this thinking it would cut through a thick metal plate. It struggled and the disc wore down. Maybe I used it wrong, but I was disappointed. It's probably better for thinner materials.
I'm a remodeler and this is my go-to for cutting old nails and screws. It's fast and safe. The guard is solid. Love it.
This thing rips through bolts and rebar. It doesn't bind. The grip is comfortable. Good investment.
I borrowed my son's and had to get one. It's great for cutting off rusted bolts. The battery from my drill works. I just wish it came with a case.
