Riving Knife - Grizzly G0764Z Owner's Manual

Riving Knife

The riving knife (see Figure 76) is a metal plate
that prevents freshly cut pieces of workpiece from
pinching the backside of the blade and causing
kickback. It also acts as a barrier behind the blade
to shield hands from being pulled into the blade if
a kickback occurs while the operator is reaching
behind the blade. (Reaching behind the blade is a
major safety risk and should never be done.) Use
the riving knife for all operations.
Riving Knife
Figure 76. Riving knife location.
To ensure riving knife works safely, it MUST
be aligned with and correctly adjusted to
blade.
Riving Knife Installation & Removal
The riving knife must be correctly installed, adjust-
ed, and aligned in order to provide the maximum
safety benefit.
The riving knife attaches to the mounting block as
shown in Figure 77. Always firmly tighten the hex
nut when securing the riving knife in place.
1
Figure 77. Installing riving knife on mounting
block.
-46-
2
3
Secure the riving knife 1–5mm below the top level
of the blade, as shown in Figure 78.
Minimum 1mm
Maximum 5mm
Figure 78. Height difference between riving knife
and blade.
The height difference between the riving knife and
the blade allows the workpiece to pass over the
blade during non-through cuts (those in which the
blade does not cut all the way through the thick-
ness of the workpiece).
The riving knife also prevents the freshly cut sides
of the workpiece from pinching the blade and
causing kickback. For maximum effectiveness of
this safety design, the riving knife must be posi-
tioned within 3–8mm of the blade, as shown in
Figure 79.
Top Distance
Minimum 3mm
Maximum 8mm
Bottom Distance
Minimum 3mm
Maximum 8mm
Figure 79. Allowable top and bottom distances
between riving knife and blade.
Model G0764Z (Mfd. Since 10/15)
Height Difference