Serra de esquadria e meia-esquadria DeWALT DCS781N-XJ

With a 305 mm blade spinning at 3800 rpm, the DeWALT DCS781N-XJ delivers clean, fast cuts across framing lumber, trim, and moulding. This 54V XR FlexVolt brushless sliding mitre saw runs cordless for total jobsite freedom, yet its cutting capacity rivals corded models—up to 305 x 85 mm at 90°/90°.

Overview

The DCS781N-XJ is a bare unit, meaning battery and charger are sold separately. It belongs to DeWALT's XR FlexVolt platform, sharing batteries with other 54V tools. The brushless motor provides efficient power delivery and longer runtime per charge. A sliding rail system extends crosscut capacity while maintaining a compact footprint. The saw weighs 23.2 kg and stands 450 mm tall, balancing stability with portability.

What stands out

• XPS Shadow Line cut indicator for accurate blade alignment without lasers.
• Dual bevel (49° left/right) and mitre range (50° left, 60° right) for complex compound cuts.
• Wireless Tool Control (WTC) pairs with compatible dust extractors for automatic activation.
• 35 mm dust extraction port keeps the work area cleaner.
• Brushless motor reduces maintenance and extends tool life.

Technical details

• Power source: 54V XR FlexVolt battery (not included)
• Motor: Brushless
• Blade diameter: 305 mm, bore 30 mm
• No-load speed: 3800 rpm
• Cutting capacity (90°/90°): 305 x 85 mm
• Cutting capacity (90°/45° bevel): 305 x 50 mm
• Cutting capacity (45° mitre/90°): 215 x 85 mm
• Cutting capacity (45° mitre/45° bevel): 215 x 50 mm
• Max depth of cut: 170 mm
• Bevel capacity: 49° left/right
• Mitre capacity: 50° left, 60° right
• Cut line indicator: XPS Shadow Line
• Dust extraction port: 35 mm
• Wireless Tool Control: Yes
• Weight: 23.2 kg
• Height: 450 mm

Our verdict

For professionals who need cordless convenience without sacrificing cut capacity, the DCS781N-XJ is a top-tier sliding mitre saw. Its FlexVolt power and precise adjustments make it a reliable choice for framing, trim, and finish carpentry on any site.