Eastwood 31659 User manual

1/4” AIR DIE GRINDER
INSTRUCTIONS
Item #31659

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The EASTWOOD 1/4” AIR DIE GRINDER features a contemporary rubber covered, aluminum body
for light weight and minimal vibration. The positive 1/4”, non-slip collet allows quick, convenient and
secure accessory changes. A high-performance, 4 vane, ball bearing motor provides smooth operation
and long life. Speed is easily controlled with an infinitely progressive throttled paddle type control.
CONTENTS
(1) Die Grinder
(1) 1/4” Collet (installed)
(1) 14mm Arbor Wrench
(1) 19mm Collet Wrench
(1) 1/4” MNPT, Male
Quick Disconnect Inlet Fitting
SPECIFICATIONS
• Collet Size: 1/4” [6mm]
• RPM: 25,000 free speed
• Air Consumption: 2.6 [73.6 L/min] @ 90 PSI [6.2 Bar]
• Inlet Thread Size: 1/4” FNPT
• Variable Speed, 4 Vane, Ball Bearing Air Motor

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READ INSTRUCTIONS
• Thoroughly read and understand these product instructions before using
this tool. Failure to follow all warnings can result in tool damage or serious
physical injury.
• Keep these product instructions for future reference.
EYE INJURY HAZARD!
• Rapidly rotating surfaces can eject metal particles, dirt and debris at
high velocity. Always wear ANSI approved eye protection when
operating this tool.
HEARING DAMAGE HAZARD!
• This pneumatic tool emits high sound levels while operating.
Use ANSI approved ear protection when operating.
BURSTING HAZARD!
• Do not exceed 90 psi (6.2 bar) of tool inlet pressure. Permanent tool
damage and/or explosion could occur and cause personal injury.
DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.
WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION used with the safety alert symbol, indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
NOTICE is used to address practices not related to personal injury.
SAFETY INFORMATION
The following explanations are displayed in this manual, on the labeling, and on all other information
provided with this product:

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INJURY HAZARD!
• This tool uses high-speed, highly abrasive cutting surfaces which can
quickly cause injury. Keep fingers and hands away from moving parts when
operating. Wear thick, well-fitting work gloves and keep loose clothing,
sleeves, cords, jewelry and hair away from moving parts.
• This tool will eject sparks at high speed which can ignite flammable materi-
als or injure others nearby. Do not operate near flammable materials and
keep all persons and pets away from the work area.
• Do not force tool or exert excessive side forces on tool while in use as
accessories can bend or disintegrate causing them to fragment and
eject sharp pieces at high velocity.
• Always make sure the workpiece is securely clamped or anchored to avoid
sudden movements which could result in injury.
• Frequently inspect accessories (Not Included) and tool condition. If damage
develops, discontinue tool use immediately and replace damaged acces-
sory. ONLY USE replacement 1/4” shank accessories rated for 25,000 RPM
or greater use otherwise severe injury or death can result in the event of
accessory failure.
• Always disconnect tool from air supply when changing accessories to
prevent accidental tool starting and potential severe injury.
VIBRATION INJURY HAZARD!
• This tool will vibrate during use! Repeated exposure to vibration may cause
physical injury.
SAFETY INFORMATION

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SET-UP
• Using a good quality Teflon sealing tape (not included), thread the 1/4” MNPT, Male quick
disconnect inlet fitting into the air inlet.
• To install or switch accesso-
ries (not included):
• With air supply disconnected,
slide the smaller 14mm Arbor
Wrench over the flats of the
Arbor and the larger 19mm
Collet Wrench over the
flats of the Collet Retainer
(FIG 1). Loosen the threaded-
on Collet Retainer to release
the Collet grip on accessory
then and pull out the acces-
sory. Replace accessory with
one of the same size shank by
sliding the shank into the Col-
let then retighten securely.
CONNECTION
• Be sure that the air supply to the tool is clean and dry. Moisture in the supply line will quickly
damage the motor and valves.
• A minimum 3/8” I.D. air line should be used for optimal performance.
INJURY HAZARD!
To avoid injury, always disconnect air supply to Die Grinder before installing
or replacing accessories.
INJURY HAZARD!
To avoid injury, only use accessories rated for High-RPM, (25,000 or greater) use.
FIG. 1

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OPERATION
• Connect air supply, hold tool
securely, rock the Paddle
Safety Lock forward and
depress Paddle to begin rotat-
ing action (FIG 2). Speed is
regulated by pressure applied
to the Paddle.
MAINTENANCE
• Add several drops of air tool oil before each use by dropping directly into the air inlet.
• If tool is to be unused for an extended period, add 10 drops of air tool oil directly to the air inlet,
rotate the tool motor by hand several times to distribute the oil throughout the motor
and gearbox then store the tool, handle up.
INJURY HAZARD!
To avoid injury, always disconnect air supply to Die Grinder before installing
or replacing accessories.
INJURY HAZARD!
To avoid injury, only use accessories rated for High-RPM, (25,000 or greater) use.
FIG. 2

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PROBLEM CAUSE CORRECTION
Tool Doesn’t
Respond to
Paddle De-
pression
Insufficient
volume of air
(CFM) to
operate tool
Verify sufficient air supply to tool.
(2.6 CFM @ 90 PSI minimum requirement).
Moisture or
other contami-
nation in air
supply
Check for moisture in air line and tool air inlet.
Tool Perfor-
mance is Slow
or Sluggish
Insufficient
volume of air
(CFM) to
operate tool
Verify sufficient air supply to tool.
(2.6 CFM @ 90 PSI minimum requirement).
Moisture or
other contami-
nation in air
supply
Check for moisture in air line and tool air inlet.
Air Motor
is lacking
lubrication
Stop use immediately and add air tool oil directly
to air inlet.
Tool is Exces-
sively Noisy/
Emits High
Pitched Sound
Air Motor
is lacking
lubrication
Stop use immediately and add air tool oil directly
to air inlet.
Tool Vibrates
Excessively
During Use
Out of balance
condition from
damaged
accessory
Stop use immediately, check for damage and
replace accessory.
Loose Collet
Retainer Tighten loose Collet Retainer securely.
TROUBLESHOOTING

© Copyright 2018 Easthill Group, Inc. 5/18 Instruction item #31659Q Rev 2
If you have any questions about the use of this product, please contact
The Eastwood Technical Assistance Service Department: 800.343.9353 >> email: [e-mail]
PDF version of this manual is available at eastwood.com
The Eastwood Company 263 Shoemaker Road, Pottstown, PA 19464, USA
800.343.9353 eastwood.com
ADDITIONAL ITEMS
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