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Installing Boring Bits
The Model G0642 boring machine accepts boring
bits with the following specifications:
Total Quantity .................................................. 15
Total Left Rotating ............................................. 8
Total Right Rotating ........................................... 7
Shank Diameter ......................................... 10mm
The boring bits have a flat surface on the shank
(see Figure 18), and an adjusting screw inside for
height alignment.
Figure 18. Standard boring bit.
Boring bits are sharp and can cut your
hands. Protect your hands when removing
or installing the bits.
To install boring bits:
1.
DISCONNECT MACHINE FROM POWER!
2.
Unscrew the two knurled knobs and remove
the front see-through guard from the boring
head assembly.
Note: Make sure the boring bits to be installed
match the rotation direction of the chucks, as
shown in the information circle above the
chuck on the boring head assembly.
For example, in Figure 19, the center chuck
will rotate to the right, as viewed from above
the chuck. This is shown by the letter "R" in
the information circle. The boring bit will also
be 64mm on center from the middle or num-
ber "0" boring bit, as shown by the number in
the top of the information circle.
-22-
Flat on Shank
Adjusting Screw
Information Circle
Figure 19. Boring chuck information circle on
boring head assembly.
3.
Align the flat surface of the bit shank with
the chuck set screws and insert the bit com-
pletely into the chuck.
4.
Use a 2.5mm hex wrench to firmly tighten
two M5-.8 x 5mm set screws (see Figure 20)
against the flat shank of the boring bit.
Flat Shank
Figure 20. Boring bit installed.
5.
Repeat Steps 3–4 with the rest of the bits
to be installed, making sure the bit direction
matches that of the chuck.
6.
Re-install the boring head guard.
Note: Generally, slight differences of drilling
depth from one bit to another is acceptable.
However, if the drilling depth across all bor-
ing bits is required, see Aligning Boring Bit
Height on Page 30.
Model G0642 (Mfd. Since 11/14)
Chuck Set
Screws
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