GEX 18V-125 Random Orbital Sander

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‹ Random Orbital Sanders

18V Professional · Brushless

GEX 18V-125 Random orbital sander No product photo yet

Random Orbital Sanders · Bosch 18V Professional

Bosch GEX 18V-125 Professional Brushless 125mm Random Orbital Sander (Body Only)

6-speed1.1kg bare3 years (with registration)

Bosch GEX 18V-125: cordless random orbital sander, 125mm pad, 2.5mm orbit, 12,000–20,000 orbits/min, 1.1kg bare.

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125mm

Pad size

2.5mm

Orbit

1.1kg

Weight (bare)

1.5m/s²

Vibration

Where it sits among 125mm random orbital sanders

Scaled against the 38 random orbital sanders with a 125mm pad we list, so other sizes aren't in the mix. Not a score: bigger isn't always better for your job.

Orbit2.5mm

2mm lowestFestool ETSC 125highest 5mmMirka DEROS II 550

Weight (bare)1.1kg

0.9kg lightestFestool ETSC 125heaviest 1.9kgBosch Green PEX 400 AE

Vibration1.5m/s²

1.5m/s² lowestThis onehighest 9.0m/s²Bosch Green PEX 300 AE

Top speed20,000opm

10,000opm lowestMakita BO001CGhighest 26,000opmEinhell TC-RS 425 E

Compare it with: + Festool ETSC 2 125 + Makita DBO180 + DeWalt DCW211 + Bosch Green EasyOrbit 18V-10

Full specs

From Bosch's own documentation. Checked 10/10/2026. Report a spec error ›

Pad & Sanding

MotionRandom orbit

Pad size125 mm

Orbit2.5 mm

Abrasive fixingHook and loop

Physical & Build

Weight (bare)1.1 kg

Weight (with battery)1.7 kg

Noise level<70 dB(A) LpA

Vibration (sanding)1.5 m/s²

Speed & Control

Top speed (orbits)20,000 opm

Lowest speed (orbits)12,000 opm

Top speed (rpm)10,000 rpm

Lowest speed (rpm)6,000 rpm

Speed dial positions6

Variable speed✓ Yes

Constant speed electronics✓ Yes

Power & Motor

Voltage18V

MotorBrushless

Powered by Bosch 18V Professional · 13

All 13 batteries that fit this tool, smallest first. Kits and chargers ›

GBA18V-20 2.0Ah · 36Wh 0.35kg 1.45kg £56.99at Machine Mart + £4.99 delivery View at Machine Mart ›

GBA18V-30 3.0Ah 0.6kg 1.7kg No retailer price yet About this battery ›

PROCORE18V-40 4.0Ah · 72Wh 0.52kg 1.62kg from £54.99at Tooled Up + £6.95 delivery View at Tooled Up ›

GBA18V-40 4.0Ah · 72Wh 0.6kg 1.7kg from £73.99at Machine Mart + £4.99 delivery View at Machine Mart ›

EXBA18V-40 4.0Ah · 72Wh 0.61kg 1.71kg No retailer price yet About this battery ›

GBA18V-50 5.0Ah · 90Wh 0.62kg 1.72kg from £85.00at Machine Mart + £4.99 delivery View at Machine Mart ›

PROCORE18V-55 5.5Ah · 99Wh 0.96kg 2.06kg No retailer price yet About this battery ›

EXBA18V-55 5.5Ah · 99Wh 1.02kg 2.12kg from £157.95at 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.