- Diamond blades consist of a steel core 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.
Diamond blades for different materials
- Diamond blades are ideal for masonry, reinforced concrete and other composite materials.
- Diamond blades are available in several hardness classes.
- Special blades should be used when cutting metal. Ask your dealer for help in choosing the right
product.
Sharpening diamond blades
- Always use a sharp diamond blade.
- 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 dull 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.
Diamond blades and cooling
- During culling the friction in the cut causes the diamond blade to be heated up. If the blade is
allowed to get too hot this can result in loss of blade tensioning or core cracking.
Diamond blades for dry cutting
- Although no water is required for cooling, dry cutting blades must be cooled with air flow around
the blades. For this reason dry cutting blades are recommended only for intermittent cutting. Every
few seconds of cutting the blade should be allowed to run 'free" with no load to allow the air flow
around the blade to dissipate the heat.
Diamond blades for wet cutting
- Wet cutting diamond blades must be used with water to keep the blade core and segments cool
during sawing.
- Wet cutting blades should NOT be used dry.
- Using wet cutting blades without water can cause excessive heat build-up, resulting in poor
performance, severe blade damage and is a safety hazard.
Diamond hlade - side clearance
Water cools the blade and increases its service life while also reducing the formation of dust
Toothed blades, carbide tipped blades and emergency situations
Use of this power cutter with a carbide tipped blade is a violation of work safety regulations.
Due to the hazardous nature and exigent circumstances involved with fire fighting and rescue ope-
rations conducted by the various highly trained public safety forces, safety professionals (fire
departments), e are aw re that they may use this power cutter with carbide tipped blades in certain
emergency situations due to the ability of carbide tipped blades to cut many different types of
obstructions and materials in combination without having to take time to switch blades or machines.
When using this power cutter be aware at all times that carbide tipped blades are more kickback
prone than abrasive or diamond blades if not used properly. Carbide tipped blades can also throw
pieces of material away from the blade.
For these reasons, a power cutter equipped with a carbide tipped blade should never be used
except by highly trained public safety professionals who are aware of the risks associated with its
use and then only in those exigent circumstances when other tools are deemed inefficient and
ineffective to for fire or rescue operations. A power cutter equipped with carbide tipped blade
should never be used to cut wood in non-rescue operations.
Transport and storage
- Do not store or transport the power cutter with the cutting blade fitted. All blades should be remo-
ved from the cutter after use and stored carefully.
- Store cutting blades in dry, frost free conditions. Special care should be taken with abrasive
blades. Abrasive blades must be stored on a flat, level surface. If an abrasive blades is stored in
humid conditions, this can cause imbalance and result in injury.
- Inspect new blades for transport or storage damage.
4. ASSEMBLING AND ADJUSTMENTS
General
The blades are high speed approved for hand held power cutters
Checking the spindle shaft and flange washers
When the blade is replaced with a new one, check the flange washers and the spindle shaft.
- Check that the threads on the spindle shaft are undamaged.
- Check that the contact surfaces on the blade and the flange washers are undamaged, of the
correct dimension, clean, and that they run properly on the spindle shaft.
Do not use warped, notched, indented or dirty flange washers. Do not use different dimensions of
flange washers.
Checking the arbor bushing
The arbor bushings are used to fit the machine to the centre hole of the cutting blade. The machine
is supplied with either a bushing that can be flipped over to fit blades with either 20 mm or 1" (25,4
mm) centre holes, or with a fixed 20 mm bushing. A decal on the blade guard indicates which bus-
hing has been factory fitted together with appropriate blade specification.
- Check that the bushing on the machine's spindle shaft corresponds with the centre hole of the
cutting blade. The blades are marked with the diameter of the centre hole.
Checking the direction of the blade rotation
- When using diamond blades make sure that it rotates in the direction indicated by the arrow on the
blade. The direction of rotation for the machine is shown by arrows on the cutting arm.
Fitting the cutting blade
The blade is placed on the bushing (A) between the inner flange washer (B) and the flange washer
(C). The flange washer is turned so that it fits on the axle.
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