Diamond Blades - Husqvarna K3000 Operator's Manual

Blade vibration
The blade can become out-of-round and vibrate if an
excessive feed pressure is used.
A lower feed pressure can stop the vibration. Otherwise
replace the blade. The blade must be of the recommended
type for the material to be cut.
Abrasive discs
The cutting material on abrasive discs consists of grit bonded
using an organic binder. "Reinforced blades" are made up of
a fabric or fibre base that prevents total breakage at maximum
working speed if the blade should be cracked or damaged.
A cutting blade's performance is determined by the type and
size of abrasive corn, and the type and hardness of the
bonding agent.
Check that the blade is approved for the same or higher
speed according to the aproval plate of the engine. Never use
a cutting blade with a lower speed rating than that of the
power cutter.
Ensure the blade it not cracked or damaged in any other way.
Test the abrasive disc by hanging it on your finger and tapping
it lightly with a screwdriver or the like. If the disc does not
produce a resonant, ringing sound it is damaged.
Abrasive discs for different materials
Disc type Material
Concrete, asphalt, stone masonry,
Concrete disc cast iron, aluminium, copper,
brass, cables, rubber, plastic, etc.
Steel, steel alloys and other hard
Metal disc
metals.
WARNING! Avoid using abrasive discs with
!
water. The strength is impaired when
abrasive discs are exposed to moisture.
SAFETY INSTRUCTIONS

Diamond blades

WARNING! Cutting plastics with a diamond
!
blade can cause kickback when the material
melts due to the heat produced when cutting
and sticks to the blade.
Diamond blades consist of a steel body provided with
segments that contain industrial diamonds.
Diamond blades ensure lower costs per cutting operation,
fewer blade changes and a constant cutting depth.
When using diamond blades make sure that it rotates in the
direction indicated by the arrow on the blade.
There is an arrow on the rear of the machine that indicates the
axles direction of rotation that the disc is mounted on.
Always use a sharp diamond blade.
Material
Diamond blades are ideal for masonry, reinforced concrete
and other composite materials. Diamond blades are not
recommended for cutting metal.
Diamond blades are available in several hardness classes. A
"soft" diamond blade has a relatively short service life and
large cutting capacity. It is used for hard materials such as
granite and hard concrete. A "hard" diamond blade has a
longer service life and reduced cutting capacity, and should
be used for soft materials such as brick and asphalt.
Sharpening diamond blades
Diamond blades can become dull when the wrong feeding
pressure is used or when cutting certain materials such as
heavily reinforced concrete. Working with a blunt diamond
blade causes overheating, which can result in the diamond
segments coming loose.
Sharpen the blade by cutting in a soft material such as
sandstone or brick.
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