Saw Band Guides - EFA SB 287 E Betriebsanleitung, Wartungsanleitung, Ersatzteilliste

Direction of band run
Figure 3: Changing saw band
The functional diagram in fig. 3 is not identical with
that of model SB287E
4.1.2 Changing saw band
Place the saw band tightly across the wheels
with the teeth against the housing. Ensure that
the teeth are facing in motor direction. The set
of the teeth must be positioned above the cut-
out in the diameter (free rotation, see Abb. 5).
Pre-tighten the saw band lightly, using the
torque wrench (D).
Slide the guide mechanism upwards by
operating the lever (E). Move the saw band by
hand into a vertical position and insert it into the
guide mechanism.
Release the lever (E) (automatic working
position).
Tighten the saw band with the torque wrench
(D) until the torque wrench engages (clicking
sound).
Let the machine run for a short period of time.
The saw band aligns itself in the correct position
in the guide wheels.
Retighten the saw band.
The tips of the saw band teeth are hardened
and cannot be resharpened.
4.2 Saw band guide mechanism
The band saws are equipped with two band guide
mechanisms. They are important devices of the
band saw and must be cleaned and inspected daily.
In the event of wear, replace the guides.
The guides of the band saw feature the
following components (see Abb. 4):
Schmid & Wezel
D 75433 Maulbronn
Lever E (fig. 64)
top = working position
bottom = guide mechanism
released for band change
Saw band
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Hard metal plate
Counteracts the sawing pressure
2 hard metal rods
Guide and deflect the saw band
Compression spring
Counteracts sawing pressure
The fibre guide (003 009 634) is not shown in
the diagram.
Grooves in hard metal
Gap (default width 0.6 mm)
Turn rods (b) if there are
grooves
Figure 4: Saw band guide mechanism
If there are grooves caused by wear on the hard
metal plate (a), it can still be used, as it has 4
sides. Simply turn the plate to prevent cracks
from the pressure applied by the saw band.
The hard metal rods (b) cannot be readjusted.
They can however be turned so that an unworn
section is exposed to the saw band. If they are
completely worn, replace them to prevent
cracks and ensure proper and safe cutting
operation.
The saw band guide mechanism must be
flexible.
Regularly inspect the fibre guide (003 009 634)
(Abb. 6) for damage and replace it, if necessary.
The distance between the front side of the drive
and guide wheel to the saw band must be 1.5 to
2.5 mm in order to ensure free movement of the
straight-set teeth (see Abb. 5).
Open the lids (B), see chapter 4.1.1
"Dismantling saw band" (page 5).
Tighten the saw band, see chapter 4.1.2
"Changing saw band" (page 6).
Version/ Ausführung
09.2012