Checking The Arbor Bushing - Husqvarna K 770 Vac Bedienungsanweisung

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: Certain cutting situations or
poor blades can suffer excessive wear on
the side of the segments. Make sure the
diamond segment (T1) is wider than the
blade (T2). This is to prevent pinching in the
cutting slot and kickback. Refer to
on page 9 .
T1
T2
14
To examine the spindle shaft and the
flange washers
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.
Kickback
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.
CAUTION: Some cutting situations and
worn blades may cause increased wear on
the side of the segments. Replace the blade
before it is worn out.
CAUTION: Use only Husqvarna flange
washers with a minimum diameter of 60 mm
(2.36 in.).
WARNING: Incorrect flange washers 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.
705 - 002 - 12.11.2018