-30-
For Machines Mfd. Since 12/20
South Bend Tools
Model SB1108/SB1109
O P E R A T I O N
4.
Remove Torx screw and insert, then clean
all dust and debris from both parts and
cutterhead pocket.
Note:
Proper cleaning of insert, Torx screw,
and cutterhead pocket is critical to achieving
a smooth finish. Dirt or dust trapped between
insert and cutterhead will raise insert,
and make marks on your workpiece when
planing.
Tip:
Use low-pressure compressed air or a
vacuum nozzle to clean out cutterhead pocket.
Figure 30. Example of cutterhead inserts and Torx
screws.
Torx Screw
Cutterhead
Insert
3.
Remove any sawdust or debris from head
of insert, Torx screw, and surrounding area
(see Figure 30).
5.
Replace insert so that a fresh cutting edge
faces outward.
— If all four insert cutting edges have been
used, replace insert with a new one.
Always position insert reference dot in
same position when installing a new
insert to aid in rotational sequencing.
6.
Lubricate Torx screw threads with a very
small amount of light machine oil, wipe
excess off, and torque screw to 50–55 inch/
pounds.
Note:
If too much oil is applied to the
threads, excess oil will attempt to squeeze
out of the threaded hole and raise insert
during installation, bringing it out of height
alignment.
Cutterhead Inserts
Rotating/Replacing
Cutterhead Inserts
Items Needed
Qty
Hex Wrench 5mm .................................................1
Wrench or Socket 10mm .......................................1
T-25 Torx Bit .........................................................1
Carbide Cutterhead Inserts.................. As Needed
Rags ...................................................... As Needed
Light Machine Oil ................................. As Needed
The spiral cutterhead is equipped with 4-sided
indexable carbide inserts. Each insert can be
removed, rotated, and re-installed to use any one
of its four cutting edges. Therefore, if one cutting
edge becomes dull or damaged, simply rotate it
90˚ (as shown below) to use a sharp cutting edge.
The inserts have a reference dot on one corner.
The position of the reference dot on installed
inserts can be used to track which edges are
sharp/unused and which edges are dull or
damaged. Replace inserts once the reference dot
has been rotated back to its original position.
Reference Dot
Figure 29. Insert rotating sequence.
The carbide inserts are very sharp and can
quickly cut your hands. ALWAYS use caution
when handling these parts to reduce the risk
of personal injury.
1.
DISCONNECT MACHINE FROM POWER!
2.
Remove dust hood, top cover, and belt cover.
To rotate or replace a helical cutterhead
insert:
!
