Summary

Robust, cordless 18V random orbit sander with a 125 mm pad, offering on-site portability, reliable finish quality and solid Bosch build.

Findings

As a tradesman who needs dependable tooling on site, the Bosch 18V cordless 125 mm random orbit sander sits well in the hand and feels purpose-built for finish work. The construction is sturdy, with a solid feel in the palm and a comfortable, well-routed grip that reduces fatigue during longer sessions. Disc changes are quick and straightforward thanks to the hook-and-loop system, and the abrasive platen seats securely without slipping. The random orbit action delivers a smooth finish with minimal swirl marks on softwoods and readily accepts a range of grits for intermediate and finishing passes. The speed control helps dial in performance for different materials, and handling remains balanced whether you're working flat on a bench or overhead. Dust management is acceptable with the integrated dust box, and when connected to a vacuum extractor or shop vac the setup becomes noticeably cleaner--though for finer dust control a dedicated extraction system is preferable. On battery power, performance stays consistent for typical finish tasks, with the trade-off that longer sessions or heavy material removal will necessitate swapping to a fresh cell. Overall, the tool feels durable enough for daily use on site, with reliability grounded in Bosch's 18V ecosystem and proven mechanical design.

Pros

  • Solid build quality and ergonomic balance for extended use.
  • Cordless convenience with reliable 18V platform compatibility.
  • Smooth random orbit action delivers good finish with minimal swirl marks.
  • Quick-disc changes with secure disc seating.
  • Practical dust box with the option to improve cleanliness via a vacuum hookup.

Cons

  • Battery runtime can become a limiting factor on larger jobs; plan for extra packs.
  • Dust extraction, while usable, isn't as thorough as dedicated dust extractors for fine dust.
  • Heavier than some corded models when mounted with a battery, impacting prolonged overhead use.
  • Higher upfront cost relative to corded equivalents within the same pad size.
  • Requires regular disc replacement and occasional maintenance to keep performance optimal.

Price at time of review: £124.97