Best Orbital Sander UK 2026: 125mm and 150mm Picks
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The tool that separates a professional finish from a DIY one
A random orbital sander is what turns raw wood into a finished surface. Used well, it leaves no swirl marks, no dips, and a glass-smooth surface ready for stain or lacquer. Used badly, it leaves circular scratches visible under any top-coat.
This guide covers the best random orbital sanders for UK trade and DIY use in 2026: 125 mm and 150 mm models in cordless and corded formats.
What to look for
- Pad size: 125 mm (5") for joinery, furniture and general work. 150 mm (6") for floor sanding and large panels.
- Orbit diameter: 2.5–3 mm for fine finishing. 5–6 mm for rougher stock removal. Some models have adjustable orbit (Festool ETS EC).
- Variable speed: 5,000–13,000 OPM range lets you match sanding speed to the material. Too fast on softwoods burns the surface.
- Dust extraction: Built-in bag is decorative. Real work requires pairing with an M-class extractor (Festool, Mirka, Bosch). The difference in finish quality is dramatic.
- Weight and balance: A heavy sander on light stock tears the veneer. Lighter sanders (~1.2 kg) are better for furniture; heavier units (1.5 kg+) for floors and structural timber.
Top picks: best orbital sanders UK 2026
Mirka DEROS 5650CV 125mm Random Orbital Sander
~£440–£520Best for: Professional furniture and joinery
Mirka's DEROS is the trade standard for fine finishing. Brushless motor, 125 mm pad, 5 mm orbit, speed dial from 4,000 to 10,000 OPM. The killer feature is the integrated vibration control — you can sand all day without your hand going numb. Pairs with Mirka's Abranet mesh abrasives and a Dust Extractor for a truly closed dust system.
View on Amazon →Festool ETS EC 125/3 EQ Professional Sander
~£370–£440Best for: Final-sand veneer / fine work
Festool's ETS EC 125 is the 3 mm-orbit variant — built for final-sand finish work on hardwoods and veneer. Brushless motor, incredibly smooth, integrated dust port that fits Festool's extractors. Lighter than the Mirka at 1.2 kg, easier for overhead or long sessions.
View on Amazon →Bosch GEX 125-150 AVE 400W Professional Random Orbital Sander
~£190–£230Best for: Dual-pad workshop sander
Bosch's GEX 125-150 AVE swaps between 125 mm and 150 mm pads with a quick change. 400 W corded motor, variable speed 4,000–12,000 OPM, microcellular dust filter. Good mid-range choice for workshops that need one versatile sander rather than two dedicated pad sizes.
View on Amazon →DeWalt DCW210N 18V XR Brushless Random Orbital Sander
~£130 (bare) / £240 (kit)Best for: Cordless site fitting
DeWalt's cordless XR 125 mm orbital sander is the right choice for site fitters who already run XR batteries. Brushless motor, 8,000–12,000 OPM variable speed, low-vibration design. About 30–45 minutes of active sanding per 5Ah battery.
View on Amazon →Buying advice and abrasives
For workshop use, Mirka DEROS + Mirka Abranet mesh abrasives + an M-class extractor is the gold standard. The setup is expensive but the finish quality and dust-free operation are in a different category.
For general trade use, Festool ETS EC 125 or Bosch GEX 125-150 AVE is the pragmatic choice. Both pair well with any M-class vacuum.
Always sand through the grit sequence: P80 → P120 → P180 → P240. Skipping grits leaves marks that only become visible under finish. Never start coarser than P80 on veneer — it will burn through.
For finding a carpenter or painter in Kent, see our carpenter and painter guides.
Frequently asked questions
125mm or 150mm sander?
125 mm (5 inch) is standard for joinery, furniture and general work. 150 mm (6 inch) is better for floor sanding and large panels. Most trade users own a 125 mm as their primary tool.
Why does my finish have swirl marks?
Usually one of three causes: sanding too fast for the grit, not working through the grit sequence properly, or a worn pad that no longer keeps abrasive flat. Run the sander through P80–P240 progressively and replace pads every 50–100 hours of use.
Do I really need a dust extractor?
For professional results, yes. The built-in dust bag catches maybe 50% of fines. A pairing with an M-class extractor catches 99%+ and delivers a visibly better finish because dust is not re-rubbing into the surface.