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17
7.6 Flush cutting
– For flush cutting, the pulleys
with ball-bearing pivot must
always be used. These pulleys
are designed to pivot easily
and follow the movement of
the diamond wire. They can be
easily differentiated from the
type with plain bearings (see
fig. 10.3).
– The pulleys with ball-bearing
pivot should always be posi-
tioned at the points where the
diamond wire enters or leaves
the concrete.
7.5 Aligning the guide pulleys
As a general rule, all guide pulleys must be aligned with each other so that the diamond wire always runs in the
middle of the pulley (minimises pulley wear and reduces the risk of the diamond wire jumping off).
Exception
Two guide pulleys on the
slack
side,
between the wire distribu-
tor pulleys and the pulley stand
at the point the diamond wire
enters the concrete, should be
set up at a slight angle (see fig.
7.5). This assists the diamond
wire to rotate about its own axis
while cutting, thereby achieving
more even wear.
1
2
Water
W
at
er
Diamond wire
Tension side
7.5
Slack side
7. Basic applications
Pulley with
ball-bearing pivot
Pulley with
ball-bearing pivot
Diamond wire
Clamping screw
Ball bearing
Pivoting pulley
Kerf
Plain bearing
Can be clamped
in position
Clamping screw
Loosen screw
for flush cutting
7.6
Printed: 08.07.2013 | Doc-Nr: PUB / 5069762 / 000 / 01