DeWalt DC415-XE Instruction Manual page 14

To engage the lock, depress the spindle lock button and rotate the spindle until you
are unable to rotate the spindle further.
MOUNTING AND USING DEPRESSED CENTER GRINDING WHEELS
AND SANDING FLAP DISCS
MOUNTING AND REMOVING HUBBED WHEELS
WARNING: To reduce the risk of serious personal injury, turn tool off and and remove
battery pack before making any adjustments or removing/installing attachments or
accessories.
Hubbed wheels install directly on the 14 x 2 mm threaded spindle.
1. Thread the wheel on the spindle by hand.
2. Depress the spindle lock button and use a wrench to tighten the hub of the wheel.
3. Reverse the above procedure to remove the wheel.
CAUTION: Failure to properly seat the wheel before turning the tool on may result in
damage to the tool or the wheel.
MOUNTING NON-HUBBED WHEELS
WARNING: To reduce the risk of serious personal injury, turn tool off and and remove
battery pack before making any adjustments or removing/installing attachments or
accessories.
Depressed center Type 27 grinding wheels must be used with included flanges. See
pages 9 and 10 of this manual for more information.
1. Install the anti-lockup backing flange (F) on spindle
(P) with the raised section (pilot) against the wheel.
Be sure the backing flange recess is seated onto the
flats of the spindle by pushing and twisting the flange
before placing the wheel.
2. Place wheel against the backing flange, centering
the wheel on the raised section (pilot) of the backing
flange.
3. While depressing the spindle lock button, thread the
clamp nut (G) on spindle. If the wheel you are
installing is more than 3.17 mm (1/8") thick, place
the threaded clamp nut on the spindle so that the
raised section (pilot) fits into the center of the
wheel. If the wheel you are installing is 3.17 mm
(1/8") thick or less, place the threaded clamp nut
on the spindle so that the raised section (pilot) is
not against the wheel.
4. While depressing the spindle lock button, tighten
the clamp nut with a wrench.
5. To remove the wheel, depress the spindle lock button
and loosen the threaded clamp nut with a wrench.
NOTE: If the wheel spins after the clamp nut is
tightened, check the orientation of the threaded clamp
nut. If a thin wheel is installed with the pilot on the clamp
nut against the wheel, it will spin because the height of
the pilot prevents the clamp nut from holding the
SURFACE GRINDING WITH GRINDING WHEELS
1. Allow the tool to reach full speed before touching the
tool to the work surface.
2. Apply minimum pressure to the work surface, allowing
the tool to operate at high speed. Grinding rate is
greatest when the tool operates at high speed.
3. Maintain a 20˚ to 30˚ angle between the tool and
work surface.
F
4. Continuously move the tool in a forward and back
motion to avoid creating gouges in the work surface.
5. Remove the tool from work surface before turning tool off. Allow the tool to stop
rotating before laying it down.
EDGE GRINDING WITH GRINDING WHEELS
P
WARNING: Wheels used for cutting and edge grinding may break or kick back 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 13 mm (1/2") in depth]. The
open side of the guard must be positioned away from the operator. For deeper cutting
with a Type 1 cut-off wheel, use a closed Type 1 guard. See pages 9 and 10 for more
G information.
12
6.35 mm (1/4") WHEELS
CLAMP NUT
BACKING FLANGE
3.17 mm (1/8") WHEELS
CLAMP NUT
wheel.
BACKING FLANGE
20˚-30˚