M18 FCSG66 Circular Saw

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M18 FCSG66 Circular saw No product photo yet

Circular Saws · Milwaukee M18

Milwaukee M18 FCSG66-0 Brushless 190mm Circular Saw (Body Only)

4.05kg bare18V3 years (with registration)

18V FUEL POWERSTATE brushless 190mm guide-rail compatible circular saw. 64.5mm cut at 90°. Variable speed. Slim full-metal motor housing. REDLINK Plus. LED light. Metal rafter hook. Compatible with guide rails. Bare unit.

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190mm

Blade

64.5mm

Cut depth (90°)

5,800rpm

Max speed

4.05kg

Weight (bare)

Where it sits among 190mm circular saws

Scaled against the 29 circular saws with a 190mm blade we list, so other sizes aren't in the mix. Not a score: bigger isn't always better for your job.

Cut depth at 90°64.5mm

61mm lowestDeWalt DCS579highest 70mmBosch GKS 18V-68 C

Cut depth at 45°46.8mm

43mm lowestMakita DHS783highest 53mmMilwaukee M18 FCS66GR3

Max bevel angle50°

45° lowestEinhell TC-CS 1410highest 57°DeWalt DCS573

Weight (bare)4.05kg

2.92kg lightestEinhell TP-CS 18/190 Li BLheaviest 5kgDeWalt DCS577

Compare it with: + Bosch GKS 18V-68 G + DeWalt DCS573 + Einhell TP-CS 18/190 Li BL + Makita DHS710

Full specs

From Milwaukee's own documentation. Checked 25/09/2026. Report a spec error ›

Cutting

Saw typeWood

Blade diameter190 mm

Blade bore30 mm

Max depth (90°)64.5 mm

Max depth (45°)46.8 mm

Bevel range0–50°

Blade included✓ Yes

Rip fence included✓ Yes

Kickback technologyNo

Power & Motor

Voltage18V

MotorBrushless

No-load speed5,800 rpm

Dust & Rail

Dust port sizeDust extractor adaptor (supplied)

Extractor hoseOther extractor hoses: check the adaptor fits this port

Compatible railsMilwaukee rail 48-08-0571 (1.4m) / 48-08-0572 (2.7m), native (Milwaukee rail is FS-pattern: Festool and Makita rails fit too)

Extractor auto-startNo

Physical & Build

Weight (bare)4.05 kg

Weight (with battery)4.75 kg

LED work light✓ Yes

Noise level93.5 dB(A) LpA / 104.5 dB(A) LwA

Vibration1.8 m/s²

The verdictOur take

Milwaukee's FUEL 190mm rail-compatible saw, built for straight guided cuts in sheet material on Milwaukee's own rail. On spec it pairs a 190mm blade and 5800rpm POWERSTATE motor with 64.5mm of depth at 90°, and noise and vibration are well controlled at 93.5 dB(A) and 1.8 m/s². It has since been joined by the newer FCS66GR3, which adds FORGE and a little more depth, so this sits as the established rail option below the current flagship. Worth noting the guide rail is sold separately, and because Milwaukee's rail uses the FS-pattern profile, Festool and Makita rails fit it too. A solid choice for guided cutting if you do not need the GR3's extra speed.

Powered by Milwaukee M18 · 11

All 11 batteries that fit this tool, smallest first. Kits and chargers ›

M18B2 2.0Ah · 36Wh 0.4kg 4.45kg from £56.95at Tooled Up + £6.95 delivery View at Tooled Up ›

M18HB3 3.0Ah · 54Wh 0.7kg 4.75kg from £64.95at Tooled Up + £6.95 delivery View at Tooled Up ›

M18B4 4.0Ah · 72Wh 0.7kg 4.75kg from £57.95at Tooled Up + £6.95 delivery View at Tooled Up ›

M18B5 5.0Ah · 90Wh 0.7kg 4.75kg from £59.95at Tooled Up + £6.95 delivery View at Tooled Up ›

M18B5-CR 5.0Ah · 90Wh 0.7kg 4.75kg from £87.95at Tooled Up + £6.95 delivery View at Tooled Up ›

M18HB5 5.0Ah 0.79kg 4.84kg No retailer price yet About this battery ›

M18HB5-CR 5.0Ah 0.79kg 4.84kg No retailer price yet About this battery ›

M18HB5.5 5.5Ah · 99Wh 1.1kg 5.15kg from £99.95at Tooled Up + £6.95 delivery View at Tooled Up ›

Tool weight worked out by adding each pack's weight to the bare tool, using the makers' figures. The maker's own with-battery figure can differ slightly. We may earn a commission on retailer links.