Husqvarna robotic lawn mowers have an excellent pedigree.
Hailing from Sweden, the company that in previous centuries were armourers of the Swedish royal family have led the market in the development of advanced robotic mowers with exemplary performance.
The Automower® range of robotic lawnmowers is market-leading and highly sought-after for gardens of all sizes.
Husqvarna has engineered this diverse range of mowers for a high degree of manoeuvrability and consistently perfect cut.
These all-weather mowers give you your time back to enjoy your garden as they quietly and effortlessly level your lawn.
Maintenance is straightforward with hard-wearing parts.
The robotic lawnmower blades are probably the only part of your Husqvarna Automower® that require replacement, and even these are changed infrequently.
In This Quick Article – We will run through the essentials on Automower® blades including how often you need to change them and the replacement blades that are available.
Husqvarna Automower® Blades Are Designed for Perfomance
The efficiency and quality of cutting are down to the blades that are driven by the powerful Husqvarna motors.
For your lawn to remain healthy, the grass blades need to be cleanly cut, with the mulching action, chopping up the clippings into a fine mulch that the lawn can readily absorb.
Rusted and blunted blades just aren’t up to the job and will end up damaging the lawn that can become yellowed and diseased.
Strong, sharp blades will achieve clean, almost noiseless cutting with durable materials that deliver a decent lifespan.
Just like a Gillette Mach 3 razor, the Husqvarna Automower® relies on 3 pivoting razor blades that are screwed into the cutting disc of the lawnmower.
The metal blade disc is rotated at centrifugal speeds by the powerful onboard blade motor at over three thousand rotations per minute.
Carbon Steel Is the Secret of the Sharpness and Durability of Automower® Blades
Husqvarnas proprietary blades are made from an iron-carbon alloy known as carbon steel.
Pearlite high-carbon steel has a carbon content of 0.60 to 1.25 per cent weight and is known for its toughness and hardness and low ductility (meaning the blade is unlikely to deform and break).
The blades are well-tempered and hardened so they are wear-resistant.
How Long Do Automower® Blades Last?
Husqvarna advise that the lifetime of its Automower® blade have a lifespan of up to 8 weeks if the mower uses the blades for regular cutting of 1000 square meters (10,763 square feet).
The type of soil and grass as well as other ground surfaces that the mower captures affect the longevity of Automower® blades.
What Wears Down Robotic Mower Blades?
Robotic mowers are inevitably going to get worn down by the continuous cutting action of the mower.
But some surfaces and materials will contribute to faster wear.
You should avoid contact with the following items as much as possible by raking or clearing your lawn ahead of setting the robotic mower to work:
- Clothes and toys that are strewn across the lawn
- Fallen branches, fruits and pine cones
- Running your mower along surfaces with grit, pebbles or bark
- Dog poop and other animal waste
Any surface that brings your mowers blades into contact with materials other than grass will cause wear on the blade as the robot will automatically work harder to shred up the material and progress its rounds.
Objects that are small enough for the robot to run over without triggering its sensors are the worst offenders and the blades can become warped as the mower attempts to cut them.
Grass juices can also corrode blades if there is prolonged contact with the mower blades without cleaning.
You can prevent this gradual damage by washing off the underside of the mower regularly.
What Are the Options for Replacing Automower® Blades?
Husqvarna’s lightweight robotic mower blade can be easily replaced in a few minutes using a standard flat head screwdriver.
You can use OEM blades or other blades with an appropriate specification, but they may not have the same durability and performance guarantees as Husquvarna blades and may compromise your warranty.
Here are the replacement blade options that Husqvarna provides.
Husqvarna Automower® blades
These are Husqvarna’s standard carbon steel blades, that will provide excellent service for any mower in the Automower® series.
These pivoting blades are designed for safe handling, effective cutting and decent service life.
They carry a Rockwell hardness rating (HRC) of 58, and have two cutting edges.
Husqvarna Endurance blades
Husqvarna have developed these carbon steel specialist blades to have more than double the lifespan of their standard blades.
They are extremely hard and sharp. These performance robotic mower blades are precision manufactured with cutting edges on all four sides.
They carry a Rockwell hardness rating (HRC) of 61, a very high rating comparable with some of the worlds finest knives.
Husqvarna Automower® Endurance High-Speed Steel Blades
Husqvarna Automower® Endurance HSS blades have hardened ultra-sharp edges and a softer core for supreme cutting performance with the robustness that imparts durability.
All four sides of these special blades have cutting edges and have a safety blade design.
They are made from a combination of carbon steel and high-speed steel for improved cutting properties with an HRC rating of 64.
You can buy these replacement Automower® blades in quantities between 6 and 300. Screws are supplied to secure them to the mowing deck of your Automower®.
Husqvarna produces some beautiful-looking, high-specification mowers that would not look out of place in any garden.
Like any robotic mower, maintenance is key to the performance and longevity of the mower and changing the blades on your Automower® every couple of months during the grass growing season should mean that you enjoy a carpet soft cut from your robot mower every time.