Robot blades
STONE REEF SR-1332
Thirty stainless blades with a titanium carbide alloy, for eleven named machines — and the only listing that says it is not an original part.
What the maker prints on its own page
Thirty blades in the set. A robot carries three to six blades depending on the
model and the whole set is always changed, so thirty is a supply for several
changes across the season rather than reordering each time.
The blades are stainless steel with a titanium carbide alloy, which the maker
states keeps the edge sharp longer and is insensitive to moisture — the robot
stands in the garden in all weather.
A blunt blade tears the stem, the cut surface yellows and the lawn looks grey;
fresh blades separate cleanly, the area stays evenly green and the stem closes
faster. With sharp blades the motor works less, which spares the battery and
the drive, shortens the mowing time and makes the robot audibly quieter,
particularly in dense or damp grass.
Suitable for eleven named machines across six brands. Not an original part —
compare the blade shape and hole pattern first.
The sentence that separates this listing
“Kein Originalteil — Klingenform und Lochbild vorher abgleichen.”
Not an original part. Compare the blade shape and the hole pattern before
buying.
Every other listing on this shelf says “100 % compatible” or “fits all models”.
This one tells you to look. It is the least confident claim on the shelf and
the most useful one, because a robot blade is a three-gram part on a spinning
disc and the hole is the whole of the fit.
Why the whole set
The explanation in the first feature line is the correct one and nobody else
gives it.
A robot’s blades hang from a disc and pivot. They wear at different rates
depending on what each one has met. Replacing one worn blade among five fresh
ones — or one fresh among five worn — leaves the disc out of balance, and an
unbalanced disc at working speed puts load into the motor bearing.
Change the set. Thirty is five to ten sets.
The argument about sharpness
Also correct, and worth repeating because it is the reason to care at all.
A blunt blade tears. A torn grass stem has a large damaged surface that dries
and whitens, which is the pale cast a lawn gets two days after being cut badly.
And a blunt blade makes the motor work harder for the worse result, which on a
battery machine comes straight out of the runtime.
What goes unpublished
Length, thickness, and whether screws are included. Two other listings here
give a thickness in millimetres and four supply screws.
Availability
From 8 € to 11 €, that being the spread across the German and Spanish Amazon stores on the day of the survey.
Beyond the euro zone, the British Amazon store prices it in its own currency, which the spread above sets aside.
More than 1.6× the cheapest country at the French and Italian Amazon stores; a gap of that size normally means forwarded stock rather than a seller on the ground, so the spread above leaves it out.
Nothing came back from the American Amazon store at all; the buy button there runs a search rather than opening an empty page.
Taken from Keepa on the day this page was last revised; stock and prices move without notice.
Prices quoted in this text were read on 26 September 2026. The live price is at the top of the page.
