Checking The Arbor Bushing - Husqvarna K 770 Dry Cut Manuel D'utilisation

• Diamond blades ensure lower costs per cutting
operation, fewer blade changes and a constant
cutting depth.
• When using diamond blade make sure that it rotates
in the direction indicated by the arrow on the blade.
Diamond blades for dry cutting
• During cutting 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.
• 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 blade - side clearance
WARNING:
or poor blades can suffer excessive wear
on the side of the segments. Make sure
the diamond segment (A) is wider than the
blade (B). This is to prevent pinching in the
cutting slot and kickback. Refer to
on page 44 .
A
B
T2
861 - 005 - 22.04.2022
Certain cutting situations
Kickback
CAUTION:
worn blades may cause increased wear on
the side of the segments. Replace the blade
before it is worn out.
To examine the spindle shaft and the flange
washers
CAUTION:
flange washers with a minimum diameter of
60 mm (2.36 in.).
WARNING:
can cause the blade to be damaged or come
loose. Do not use defective, worn or dirty
flange washers. Use only flange washers of
the same dimension.
Examine the spindle shaft and the flange washers when
the cutting blade is replaced. Replace damaged parts.
1. Make sure that the threads on the spindle shaft are
not damaged.
2. Make sure that the areas of contact on the cutting
blade and the flange washers are not damaged.
3. Make sure that the flange washers are clean and of
the correct dimension.
4. Make sure that the flange washers run correctly on
the spindle shaft.

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" (25,4mm) centre holes,
or with a fixed 20 mm bushing.
Some cutting situations and
Use only HUSQVARNA
Incorrect flange washers
49