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M18 · Brushless

M18 FHSAG125XPDB2 Angle grinder No product photo yet

Angle Grinders · Milwaukee M18

Milwaukee M18 FHSAG125XPDB2 18V FUEL HIGH OUTPUT Brushless 125mm Paddle Switch Angle Grinder (Body Only)

2.4kg bare18V3 years (with registration)

18V M18 FUEL brushless 125mm high-power angle grinder. 9000rpm, M14 spindle with FIXTEC tool-free nut. Paddle switch. Anti-Kickback and brake. Body only.

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125mm

Disc

9,000rpm

Max speed

2.4kg

Weight (bare)

Where it sits among 125mm angle grinders

Scaled against the 59 angle grinders with a 125mm disc we list, so other sizes aren't in the mix. Not a score: bigger isn't always better for your job.

Max speed9,000rpm

7,000rpm lowestDeWalt DCG412highest 12,000rpmDeWalt DWE4117

Weight (bare)2.4kg

1.57kg lightestEinhell TP-AG 18/125 F Li BLheaviest 2.9kgMakita GA5021C

Noise (LpA)86.6dB(A)

79dB(A) lowestMakita DGA513highest 95dB(A)Bosch GWS 14-125 S

Compare it with: + Makita DGA513 + Bosch Green AdvancedGrind 18V-80 + Bosch GWS 18V-11 S + DeWalt DCG412

Full specs

From Milwaukee's own documentation. Checked 24/06/2026. Report a spec error ›

Disc & Cutting

Disc diameter125 mm

Disc bore22.23 mm

Disc mount systemM14 (Standard)

Spindle threadM14

Voltage18V

Extractor auto-startNo

Year released2023

Safety

Electronic brake✓ Yes

Electronic kickback brake✓ Yes

Kickback technologyAnti-Kickback Protection

Overload protection✓ Yes

Tool-free nutFIXTEC (tool-free nut)

Performance

No-load speed9,000 rpm

MotorBrushless

Handle & Control

Switch typePaddle

Side handle✓ Yes

Lock wrench✓ Yes

Physical & Build

Weight (bare)2.4 kg

Weight (with battery)3.1 kg

Noise level86.6 dB(A) LpA / 94.8 dB(A) LwA

Vibration7.7 m/s²

The verdictOur take

The muscle of the 125mm line. The HIGH OUTPUT motor delivers roughly 1,800W of corded-equivalent power, the most of any M18 125mm grinder, and holds 9,000 rpm under load for heavy cutting and grinding. That comes at a cost: it's the loudest and highest-vibration of Milwaukee's M18 125s at 7.7 m/s², so it earns its keep on hard graft rather than light all-day work. The RAPIDSTOP brake, Anti-Kickback Protection and FIXTEC nut all carry over. Reach for it when the standard FUEL grinders run out of grunt.

Powered by Milwaukee M18 · 11

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

M18B2 2.0Ah · 36Wh 0.4kg 2.8kg from £56.95at Tooled Up + £6.95 delivery View at Tooled Up ›

M18HB3 3.0Ah · 54Wh 0.7kg 3.1kg from £64.95at Tooled Up + £6.95 delivery View at Tooled Up ›

M18B4 4.0Ah · 72Wh 0.7kg 3.1kg from £57.95at Tooled Up + £6.95 delivery View at Tooled Up ›

M18B5 5.0Ah · 90Wh 0.7kg 3.1kg from £59.95at Tooled Up + £6.95 delivery View at Tooled Up ›

M18B5-CR 5.0Ah · 90Wh 0.7kg 3.1kg from £87.95at Tooled Up + £6.95 delivery View at Tooled Up ›

M18HB5 5.0Ah 0.79kg 3.19kg No retailer price yet About this battery ›

M18HB5-CR 5.0Ah 0.79kg 3.19kg No retailer price yet About this battery ›

M18HB5.5 5.5Ah · 99Wh 1.1kg 3.5kg 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.