DeWalt D28112 Instruction Manual page 15

thethreaded clamp nut o nthe spindle sothat t heraised s ection
(pilot) isnot a gainst the wheel.
4.While d epressing thespindle lockbutton, tighten t heclamp nut
with awrench.
5.To remove the wheel, depress the spindle lock button a nd loosen
thethreaded clamp n ut w ithawrench.
NOTE: Ifthewheel spins a fter t heclamp n utistightened, check t he
orientation ofthethreaded clamp n ut.Ifa thin wheel isinstalled with
thepilot o nthe clamp nutagainst the wheel, itwill s pin because the
height ofthepilot p revents theclamp n utfrom holding the wheel.
FIG. 11 1/4" ( 6.35 mm) 1/8" ( 3.17 m m)
WHEELS WHEELS
CLAMP NUT CLAMP NUT
BACKINGFLANGE
BACKING FLANGE
SURFACE GRINDING WITH GRINDING WHEELS (FIG. 12)
1. Allow the tool to reach full speed before touching the tool to the
work surface.
2. Apply minimum pressure to the FIG.12 ...........
work surface, allowing the tool to ':
operate at high speed. Grinding _0o_30 °
rate is greatest when the tool
operates at high speed.
3. Maintain a 20 °to 30 ° angle between the tool and work surface.
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 (FIG, 13)
_ 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. Toreduce 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 operato_ For deeper cutting with a Type 1
cut-off wheel, use a closed, Type 1 guard. See the chart on page 10
for more information. Type 1 guards are available at extra cost from
your local dealer or authorized service cente_
1. Allow the tool to reach full speed FIG.13
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. Position yourself so that the open-
underside of the wheel is facing
away from you.
4. Once a cut is begun and a notch is
established in the workpiece, do not
5,
change the angle of the cut. Changing the angle will cause the
wheel to bend and may cause wheel breakage. Edge grinding
wheels are not designed to withstand side pressures caused by
bending.
Remove the tool from the work surface before turning the tool off.
Allow the tool to stop rotating before laying it down.
14