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EN
9
Handling wet diamond core
drill bits
•
Always use and store wet diamond core drill
bits in accordance with the manufacturer's
instructions.
•
Too soft diamond segments:
f
Wet diamond core drill bits wear too quickly
at very high removal rate.
Remedy
: The material to be machined
requires wet diamond core drill bits with a
harder bond.
•
Too hard diamond segments:
f
The diamond grains become blunt and do
not break out of the bond. The wet diamond
core drill bits no longer have any cutting
power.
Remedy
: The material to be machined
requires wet diamond core drill bits with a
softer bond.
•
If water flushing is not used during machining,
the wet diamond core drill bit increasingly
rubs against “soft” drill dust. The core drill bit
segments heat as a result, they become soft and
the diamond splinters sink into the substrate.
The wet diamond core drill bit becomes less
sharp. The cutting performance weakens and
the user increases the pressure on the wet
diamond core drill bit, which in turn increases
the effect. After drilling a few holes, the wet core
drill bit segments are “glazed” or they tear off
at the least resistance in the stone and the wet
diamond core drill bit must be replaced.
•
Sharpening the wet diamond core drill bit using
the BAIER professional whetstone (ID No.
15453) or a soft stone between drilling enables
sunken in diamonds to be re-released and the
wet diamond core drill bit is sharp again.
•
Water cooling of the core drill bit segments is
necessary to extend the life of the wet diamond
core drill bit and to keep the cutting speed high.
•
Excessive drilling pressure can cause material
fatigue in the base metal and therefore the
formation of cracks. Before use, ensure that
there are no cracks in the wet diamond core
drill bit.
•
14
The wet diamond core drill bit should plunge
into the wall only after the working speed has
been reached – green LED (1) lights up.
10 Disposal
Recycle the machine and its packaging
in an environmentally friendly way in
accordance with the provisions applicable
in your country.
11 Tools and Accessories
•
BAIER wet diamond core drill bits with different
drilling diameters and lengths, see BAIER
catalogue
•
BAIER drill stand for BDB 819, Id No. 8167
f
BAIER vacuum kit for drill stand BDB 819, Id
No. 73312
– BAIER replacement rubber vacuum seal
for baseplate Id No. 60244
f
BAIER water extraction kit for drill stand
BDB 819 up to 180 mm Ø Id No. 8207
– BAIER replacement rubber cap for water
extraction kit, Id No. 60236
•
BAIER centring suction plate for BDB 819
Id No. 44867
f
BAIER centring disc with rubber sealing disc,
see BAIER catalogue
f
BAIER rubber sealing disc (replacement),
see BAIER catalogue
•
BAIER water pressure vessel (8 l capacity)
Id No. 60723
•
BAIER vacuum pump, with 10 m suction hose Id
No. 46771
•
BAIER special dust extractor, see BAIER
catalogue
•
Professional whetstone Id No. 15453
•
BAIER plastic transport case for BDB 819 Id
No. 8495
Summary of Contents for BDB 819
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