DeWalt DW821 Instruction Manual page 8

FIG. 12
FIG. 11
FIG. 14
with either matching flanges or with depressed center flanges if
they are under 5" in diameter. 6" depressed center edge-grinding
wheels (for DW827 only) must be mounted with depressed center
flanges only. Refer to the chart below to select the appropriate
flange and guard for your wheel.
CAUTION: Wheels used for cutting and edge grinding may break
if they bend or twist while the tool is being used to do cut-off work or
deep grinding. To reduce the risk of serious injury, limit the use of
these wheels with a standard type 27 guard to shallow cutting and
notching (less than 1/2" in depth). The open side of the guard must
be positioned away from the operator. For deeper cutting with a type
1 wheel, use a closed, type 1 guard (FIG. 2). Type 1 guards are avail-
able at extra cost from your local dealer or authorized service center.
FIG. 13
FIG. 15
Wheel
Application
Shape
Type
depressed
shallow type
center, 5"
cutting
or smaller
shallow depressed type
cutting center, 6"
flat, 6" or type
all cutting
smaller
depressed
type
grinding center, 5"
or smaller
depressed type
grinding
center, 6"
1. Place the backing flange on the machine spindle (FIG. 11 or
FIG 12).
2. Place the wheel against the flange, centering the grinding wheel
on the backing flange pilot.
3. Screw the threaded flange onto the spindle, piloting the wheel
on the backing flange hub (FIG. 13).
4. Rotate the spindle by hand while pressing the spindle lock but-
ton until the spindle locks, preventing the spindle from rotating
(Fig. 14).
5. While depressing spindle lock button, firmly tighten the thread-
ed flange with supplied hex wrench (Fig. 15).
5
Guard
Flange
Type
matching flanges
type
or depressed
2 7 2 7
center flanges
depressed center type
2 7 flanges 2 7
type 1
matching flanges
1 only
matching flanges
type
or depressed
2 7 2 7
center flanges
depressed center type
2 7 flanges 2 7