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Bosch Cordless Sander GEX 18V-125
Bosch PRO 18V System Akku Exzenterschleifer GEX 18V-125 (inkl. Schleifteller (125mm), 1x Schleifpapier, Staubbeutel, ohne Akku/Ladegerät)
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In detail
Anyone who's spent an afternoon with a cheap random orbital sander knows the drill: after thirty minutes your wrist aches, and the surface still shows faint swirl marks. Bosch's GEX 18V-125, part of the PRO 18V System lineup, tackles that problem from a different angle — ergonomics and drivetrain, rather than raw power alone. The balance is the first thing you notice. Bosch positioned the weight so your hand sits close to the workpiece rather than at the back of the housing. That sounds minor on paper, but it shows during longer sessions: less tipping moment, steadier tracking, more even pressure across the whole surface. Paired with the ergonomically shaped hand rest, the tool stays controllable even at awkward angles or overhead — a scenario where rear-heavy designs tend to get shaky fast. Under the hood sits a brushless motor, and the payoff is twofold. First, the sander pushes through tough spots — knots, old paint layers — without the RPM dropping off noticeably. Second, a brushless motor simply wears down slower than a traditional brushed one, since there's no mechanical friction from carbon brushes to begin with. For anyone who plans on keeping this tool in rotation for years in a workshop or on job sites, that's an argument that only really pays off after a few hundred hours of use — but it pays off clearly. The 125mm sanding pad follows the common hook-and-loop standard, so swapping the included sandpaper (C430, Expert for Wood + Paint, grit 120) for a different grit is straightforward — handy when moving from heavy material removal to a fine finish. The included dust bag captures a portion of sanding dust right at the source, which cuts down cleanup on indoor jobs, though a shop vac remains the more thorough option for dustier tasks. One thing to know before buying: this variant ships as a bare tool — no battery, no charger. That's deliberate, part of the 18V System philosophy. If you already own Bosch Professional batteries, you skip a redundant purchase and slot the GEX straight into your existing lineup. If you're starting fresh, factor that into your budget. Altogether, the GEX 18V-125 isn't a sander that wins you over with one flashy spec — it's one that gets several smaller things right at once: balance, motor, and system compatibility. That combination shows up consistently in buyer feedback too, with steady praise for smooth running and handling, alongside the clear reminder that this listing is tool-only.
Pros & cons
What speaks for it
- Well-balanced design keeps your hand close to the workpiece — less fatigue over long sessions
- Brushless motor delivers consistent power and a longer service life
- Compatible with the Bosch Professional 18V System for battery sharing
- 125mm hook-and-loop pad makes swapping sandpaper quick
- Included dust bag cuts down on cleanup
What to consider
- Sold as a bare tool — no battery or charger included
- Only one sheet of sandpaper (120 grit) included in the box
Frequently asked
Use cases
- Fine-sanding furniture and wood surfaces before painting or oiling
- Removing old paint or varnish layers from doors, frames, and window sills
- Sanding between coats on multi-layer paint or varnish projects, indoors or out
Alternatives
Clean surfaces without swirl marks — the random orbital sanders that actually deliver in woodworking and DIY.