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Sanding Disc Selection
Use sanding discs and accessories that are:
• correct size as written on tool's nameplate.
• rated at or above the RPM listed on the tool's name-
plate.
• correct accessory, wheel type and grit for the job.
Select the correct type of sanding disc for the job.
Generally, use 24 or 36 grit for heavy stock removal;
50, 60, or 80 grit for medium stock removal and 120
grit for finishing. Always begin with a coarse grit, us-
ing successively finer grits to obtain the desired finish.
• Aluminum Oxide: For fast cutting, general purpose
discs for most metal jobs. Best for cold-rolled steel,
stainless steel or metals requiring tough, fast cutting,
long lasting abrasives.
• Aluminum Zirconia Bi-Cut: Unique grit pattern is
arranged in clusters for faster stock removal and
cleaning. Ideal for removing paint from cars, boats,
etc. without clogging.
• Ceramic: Lasts up to 3 times longer than aluminum
oxide discs. For general metal working. Ideal for
tough jobs.
Installing Backing Pad and Sanding Discs
1. WARNING! Remove battery to avoid starting the tool.
2. Wipe the accessories, disc nut and spindle to
remove dust and debris. Inspect the parts for dam-
age. Replace if needed. Use only MILWAUKEE
mounting hardware designed for this tool.
3. Place the flange on spindle, as shown. Rotate
flange until it is engaged on the spindle.
4. Slip backing pad onto spindle with flat side away
from gear case.
5. Place sanding disc on backing pad and secure
assembly to spindle with disc nut.
6. Press in the spindle lock button while turning
flange nut clockwise. Tighten securely.
7. To remove backing pad and sanding disc, remove
the battery pack and reverse the procedure.
Disc nut
Sanding disc
Backing pad
Flange
Spindle
Installing/Removing/Cleaning
the Dust Screen
Using the dust screen will increase the performance
and extend the life of the tool.
1. WARNING! Remove battery to avoid starting the tool.
2. To install the dust screen, snap the screen over
the tool's handle.
3. To remove the dust screen, pry it away from the
tool using a flat screwdriver.
4. WARNING! Always wear eye protection. To clean
the dust screen, tap against a hard surface, or blow
clean with compressed air.
ONE-KEY™
To learn more about the ONE-KEY™ functionality
for this tool, go to milwaukeetool.com/One-Key. To
download the ONE-KEY™ app, visit the App Store
or Google Play™ from a smart device.
ONE-KEY™ Indicator
Solid Blue
Wireless mode is active and
ready to be configured via the
ONE-KEY™ app.
Blinking Blue Tool is actively communicating with
the ONE-KEY™ app.
Blinking Red Tool is in security lockout and can
be unlocked by the owner via the
ONE-KEY™ app.
OPERATION
To reduce the risk of injury, always
WARNING
wear proper eye protection marked
to comply with ANSI Z87.1.
When working in dusty situations, wear appro-
priate respiratory protection or use an OSHA
compliant dust extraction solution.
Never grind without proper safety equipment.
Mode Selector Button
MILWAUKEE grinders have a speed selection panel
located at the end of the handle to set the minimum
and maximum speed. Press the mode select button
to switch between the different speeds.
Maximum RPM
Mode 1
Mode 2
5000
6000
Controlled Start
The controlled start feature reduces the torque reac-
tion "jerk" when the trigger is pulled.
RAPIDSTOP™
The electric brake engages when the switch is re-
leased, causing the wheel to stop within seconds.
There may be a delay between the time the switch is
released and when the brake engages. Occasionally
the brake may miss completely. If the brake misses
frequently, have the tool serviced by an authorized
MILWAUKEE service facility. Make sure the tool
comes to a complete stop before laying it down.
8
Mode 3
Mode 4
7000
8400
®
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