What the standard pins down
EN 62841 is a family, not a single document. A common first part sets out general safety requirements for electric motor-operated hand-held tools, transportable tools and lawn and garden machinery; a series of further parts handle particular machines. The garden parts are the ones that matter on this site.
The first part is where the measurement methods live. It fixes how a machine is prepared, which operating condition it is run at, where the accelerometer goes and how many runs are averaged, so that the vibration total value a manufacturer declares is comparable to the one its competitor declares for the same kind of machine. It does the same for sound, defining the operating condition under which the emission figures in the manual are obtained.
The particular parts add what is specific to the machine: guarding of the working element, what the switch must do, how the tool is restrained when it starts, and what the instructions must warn about.
What all of it has in common is that it is written for the person holding the tool. That is the difference between this family and the mower standard: a mower stands on the ground and the hazard is underneath it, while these machines are carried, and a good part of the requirement is about what the machine does to the hands holding it.
What it does not promise
It does not promise your exposure. A declared vibration total value describes a rig running a defined condition; what reaches your wrists depends on the hours, the material, the grip and the temperature. Nothing in the document turns one into the other, and no page on this site attempts the arithmetic.
It does not promise the figures are comparable between machine types. A blower’s declared value and a shear’s declared value were obtained under different defined conditions. Printing them in the same table — as a great many listings do — invites a comparison the method does not support.
It does not promise a noise figure you will experience. The emission figures here are measured at a defined position, and they are not the guaranteed sound power level stamped on the machine, which comes from the outdoor noise directive and means something different again. Confusing the two is the commonest error on this shelf, and it has its own page.
And it does not promise durability, guarding against misuse, or anything about the working element after wear.
The documents it sits next to
The sound power level marked on the machine and printed in an advertisement comes from the outdoor noise directive. The method used to determine that level in the first place is an ISO document on sound power. A battery machine’s pack and charger bring their own standards, and its sealing figure another.
A pedestrian mower is not covered here — it has its own machine standard and its own appliance part. The boundary is roughly whether the machine is carried or walked behind, and it is worth knowing when a listing cites a designation from the wrong family.
Which shelves it reaches here
The blower, shear, tiller, scarifier and powered sprayer families cite it. Those are the machines whose manuals carry a declared vibration value, and where the figure is worth surfacing.
Where a review here reports a vibration or a sound emission figure, it reports it as declared and names the machine’s own manual as the source. Where the listing carries no figure at all — which is most of the imported end of these shelves — the page prints that instead.
The questions that keep coming in
Why do two similar blowers declare very different vibration?
Because the value is measured on a defined operating condition, and the conditions differ between machine types and between the sub-parts of the standard that apply to them. Comparing declared values across two different kinds of tool is not a comparison at all; comparing them between two machines of the same kind is closer to one.
What is the uncertainty figure next to the vibration value?
It is the spread the measurement method itself carries, stated by the standard and reprinted by the manufacturer. A declared value without it is half a figure, and the number a listing quotes is almost always the half without it.
Does a low declared value mean the tool is comfortable?
It means the tool produced that value at the test condition, held for the test duration, by a rig. How long you hold it, what you are cutting, how tight your grip is and how cold the handle is are not in the measurement.
Last reviewed 26 September 2026