Speedaire 21AA82 Instructions for use

21AA82 21AA84
21AA87 21AA88 21AA92 21AA93
21AA85 21AA86
21AA
82
3/8
3/8
3/8
3/8
3/8
3/8
1/4
1/4
Free
Speed
(RPM)
Collet
Size
(Inch)
Hose
Size
(Inch)
Average Air
Consumption
(CFM)
Length
(Inch)
Horsepower
(HP)
Weight
(Lbs)
1/4
1/4
1/4
1/4
1/4
1/4
1/8
1/8
0.35
0.5
0.5
0.5
0.5
0.5
0.1
0.1
1/4”
1/4”
1/4”
1/4”
1/4”
1/4”
1/4”
1/4”
4
4
4
4
4
4
1.5
1.5
6-1/2
7-3/8
13
6-11/16
7-3/8
6-3/4
5-1/4
7-1/8
1.1
1.5
2.2
1.2
1.5
1.5
0.25
0.31
21AA82
21AA84
21AA85
21AA86
21AA87
21AA88
21AA92
21AA93
20,000
18,000
22,000
22,000
22,000
22,000
56,000
70,000
Speedaire® die grinders are designed for cleaning tire molding, porting and general high-speed polishing and grinding in confined areas.
These lightweight units feature built-in comfort grip, adjustable air regulator, safety throttle lever, rear exhaust with silencer, and low
operational noise.
SNC1007312
09451
Version 0
05/2013
Please read and save these instructions.
21AA82, 21AA84, 21AA85, 21AA86,
21AA87, 21AA88, 21AA92 and 21AA93

< 2 >
Always operate, inspect and maintain this tool in accordance with American National Standards Institute
Safety Code of Portable Air Tools (ANSI B186.1) and any other applicable safety code and regulations.
Always wear impact-resistant eye and face protection when operating or performing maintenance on the
tool. Always wear hearing protection when using this tool. High sound levels can cause permanent hearing
loss. Use hearing protection as recommended by your employer or OSHA regulation.
Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to cause
cancer, birth defects or other reproductive harm. Some examples of these chemicals are :
. Lead from Lead-based paints
. Crystalline silica from bricks and cement and other masonry products, and
. Arsenic and chromium from chemically-treated lumber.
Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals :
work in a well-ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter out
microscopic particles.

< 3 >
Installation
Operation
1. Supply tool with 90PSI of clean, dry air. Higher pressure
drastically reduces tool life. Connect tool to air line using
pipe, hose, and fitting sizes. Do not install a quick
coupler directly into the grinder throttle handle.
2. Use only mounted wheels or tire buffing accessories
with adequate speed rating and the correct shaft diameter.
Grinding accessory's rated speed must be equal to or
greater than the speed of the die grinder.
The amount of moisture carried by compressed air
varies as the temperature of the air drops after
compression. As the temperature drops, water is
precipitated. In order to eliminate as much water

< 4 >
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PN21AA399G
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< 5 >
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< 11 >
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Air Intake Tube
Hose Plug
Short Pin
O-ring
Sliding Knob
O-ring
Screw
Rear End Holder
Air Inlet W/hose
Silencer
Wrench
Wrench
1
2
3
4
5
6
7
8
9
10
11
12
Lock Nut
Collet 1/8"
Collet Foundation
Ball Bearing
Front End Plate
Rotor
Rotor Blade
Cylinder
Ball Bearing
Rear End Plate
Angle Housing
Boay
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< 12 >
Problem Possible Cause Solution
There is moisture blowing out
of the tool's exhaust.
There is water in the tank. Drain the tank. (see the air compressor manual for
instrucons.) Lubricate the tool again and run for 1-2
seconds.
The tool runs slowly or will not
operate.
There is grit or gum in the tool. Flush the tool with air tool oil or gum solvent.
The tool is out of oil. Lubricate the tool according to the lubricaon
instrucons in this manual.
The air pressure is low. ˏAdjust the regulator seng on the tool.
ˏAdjust the compressor regulator to the tool's
maximum seng of 90psi.
The air hose leaks. ƷCheck the ng and connecon;
ƷCheck the air hose.
The air pressure drops. ˏEnsure the hose is the proper size. Long hoses or
tools using large volumes of air may require a hose
with an I.D. of 1/2" or large depending on the total
length of the hose.
ˏDo not use a mulple number of hoses connected
together with a quick connect ng. This causes
addional pressure drops and reduces the tool power.
Directly connect the hoses together.
There is a worn rotor blade in the motor. Replace the rotor blade.
There is a worn ball bearing in the motor. Remove and inspect the bearing for rust, dirt, and
grit. Replace or clean and grease the bearing with
bearing grease.
Troubleshooting

< 13 >
100 Grainger Parkway, Lake Forest, Illinois 60045 USA.

< 14 >