Head to head
Bona FlexiSand 1.9 vs Karcher HDS 5/11 U
The Bona FlexiSand 1.9 is a single-disc rotary floor sanding and buffing machine. The Karcher HDS 5/11 U is a professional hot water pressure washer, upright class.
Last reviewed 13 September 2026
Specifications side by side
| Bona FlexiSand 1.9 | Karcher HDS 5/11 U | |
|---|---|---|
| Weight | 50kg (plus optional 11kg magnetic weight) | 65.4 kg (with accessories) |
| Power | 1.9kW | - |
| Voltage | 230V, 50Hz, 11A | - |
| Disc diameter | 407mm (16in) | - |
| Max pressure | - | 110 bar |
| Flow rate | - | 450 l/h |
| Max water temperature | - | 80 C |
| Motor power | - | 2.2 kW |
Sources: Bona FlexiSand 1.9, Karcher HDS 5/11 U. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the FlexiSand 1.9 if...
A single-disc rotary sander used for buffing, screening and light sanding rather than heavy stock removal, which is why floor contractors keep one alongside a belt or drum sander rather than instead of one. Its 407mm disc and 1.9kW motor put it in the same bracket as other single-phase rotary buffers sold through UK flooring trade counters.
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Buy or hire the HDS 5/11 U if...
The HDS 5/11 U is an entry point into Karcher's hot-water professional range, used by cleaning contractors and agricultural or workshop users needing hot water for grease and oil removal. It is a common unit on trade cleaning equipment hire fleets rather than a domestic purchase.
Full HDS 5/11 U specifications →Common questions
What is the difference between the Bona FlexiSand 1.9 and the Karcher HDS 5/11 U?
The Bona FlexiSand 1.9 is a single-disc rotary floor sanding and buffing machine; the Karcher HDS 5/11 U is a professional hot water pressure washer, upright class.
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