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Bosch Random Orbital Sander PEX 400 AE
Bosch Exzenterschleifer PEX 400 AE (370 Watt, im Koffer)
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Anyone who's tried to sand a larger wooden surface by hand knows how that ends: aching wrists, uneven results, and the nagging feeling there has to be a better way. The Bosch PEX 400 AE was built precisely for those moments — a random orbital sander that takes the guesswork and the grunt work out of getting a clean finish. The 370-watt motor delivers solid power for mid-sized and larger surfaces. But what really makes a difference day to day is the electronic speed preselection. It sounds technical, yet it's straightforward in practice: you dial in the right speed before you start, matching it to the material — softer wood, a tougher lacquer layer, or something more delicate. No guessing, no risk of oversanding. The ergonomics are another genuine strength. Bosch designed the PEX 400 AE to sit comfortably in the hand even when working overhead or on vertical surfaces. That matters more than it might seem — anyone who's spent time sanding a wall or a ceiling knows how quickly a poorly balanced tool becomes a burden. Here, the grip feels natural, and the sander works equally well horizontally and vertically without constant readjusting. It handles both flat and curved surfaces, which gives it real versatility. Tabletops, curved cabinet fronts, gently contoured wooden pieces — the orbital movement reliably prevents the swirl marks that other sanders can leave behind, the kind that show up clearly once you apply paint or varnish. The package includes the sander itself, a K80 sandpaper sheet, a Paper Assistant for trimming sanding sheets to size, and a plastic carrying case. The case isn't luxury, but it does its job well: everything has a place, and you're not hunting through a toolbox when you need to get started. Thousands of buyers have made this their go-to sander, and the consistently strong feedback confirms what you sense when you first pick it up: Bosch didn't cut corners where it counts. For anyone who sands regularly and wants reliable control, good ergonomics, and clean results, the PEX 400 AE is a dependable choice from a brand with a long track record in power tools.
Pros & cons
What speaks for it
- 370-watt motor for efficient sanding of mid-sized and large surfaces
- Electronic speed preselection — easily adapted to different materials
- Excellent ergonomics: comfortable for overhead and vertical work
- Works on flat and curved surfaces without leaving swirl marks
- Practical plastic carrying case for tidy storage and transport
What to consider
- Only one sandpaper sheet (K80) included — additional sheets needed separately
- Plastic case offers limited protection in very rough job-site environments
Frequently asked
Use cases
- Sanding and smoothing wooden furniture or floors before painting, oiling, or waxing
- Stripping old paint layers and preparing doors, windows, or furniture for renovation
- Fine-sanding and finishing curved or contoured wood surfaces without leaving swirl marks
Alternatives
Clean surfaces without swirl marks — the random orbital sanders that actually deliver in woodworking and DIY.