Chicago Electric 9"Angle Grinder 93179 - Manual (Page 7)

Page 7 For technical questions, please call 1-800-444-3353. SKU 93179
You must install the Grinding Wheel (502) before
using your tool.
1. Place the Backing Washer (2) on the Arbor
Spindle (7) as shown, making sure it fits tight.
2. Place the Grinding Wheel (502) on top of the
Backing Washer (2), making sure the bore of the
Grinding Wheel fits onto the step of the Arbor
Spindle (7).
3. Place the Disc Locking Nut (1) onto the Arbor
Spindle (7) with the concave recessed side
against the Grinding Wheel (502).
4. Press in and hold the Spindle Lock (22). Be sure
that the Spindle Lock has engaged in the Arbor
Spindle (7) and is preventing it from turning.
5. While holding in the Spindle Lock (22) tighten the
Disc Locking Nut (1) by turning it clockwise with
the Spanner (501). Tighten securely.
6. Before using the tool, let it run for a minute,
checking to be sure there is no excess vibration.
If there is excess vibration, the Grinding Wheel
(502) is either not installed properly, or is
damaged. Unplug the tool, and reinstall or replace
the Grinding Wheel.
7. Removing the Grinding Wheel is the reverse of
these steps.
About Power Grinders and Grinding Wheels
While an extremely useful tool, power grinders can
be dangerous if damaged or used improperly.
1. Grinding wheels are made of aggregates of a
cutting material (grit) such as Aluminum Oxide,
an epoxy binder and usually a fabric matrix.
During manufacture, the grit portion of the wheel
is bonded to steel flanges which provide an area
to slide onto the arbor and fix in place using the
arbor nut.
2. Grinding wheels come in dimensional sizes, speed
ranges and grit sizes.
3. This grinder is designed to accept 9” diameter
grinding wheels, with an arbor hole diameter of
5/8”. The included adapter will allow you to use
arbor sizes of 7/8”. Do not use wheels of any other
size.
4. This grinder has a maximum speed of 6500 RPM.
WARNING: Do not use a grinding wheel which
is not rated for at least this speed. using
lower speed rated wheels at higher speed
may cause the grinding wheel to come apart
and be ejected from the grinder at high speed,
possibly causing severe personal or property
damage.
5. Grinding wheels are identified by the material
which makes up the grit, the recommended work
piece material, and a grit number which indicates
the coarseness of the grit. Lower numbers are
more coarse. Coarse grits cut faster, but leave a
rough surface. Finer grits (higher grit numbers) cut
more slowly, but leave a more finished surface.
Select the grit which is appropriate to the job at
hand.
6. During use, grinding wheels may become
unevenly worn, cracked or chipped. Wheels which
are damaged in this way will usually cause the
grinder to vibrate. WARNING: Damaged grinding
wheels may break apart during use, possibly
causing injury. Never use a damaged or
unevenly worn grinding wheel.