Sunex Tools SX221B User manual

SX221B 1 Rev. 06/01/04
Operating Instructions • Warning Information • Parts Breakdown
SX221B
1/2" DR.
REVERSIBLE
AIR DRILL
SPECIFICATIONS
Free Speed ......................500 RPM
Chuck Capacity .....................1/2"
Air Inlet ..........................1/4” NPT
Hose Size ..........................3/8” ID
Rec. Air Pressure ..................90 PSI
Avg. Air Consumption ......... 4 CFM
Sound Level ....................89.0 dBA
Length ................................9-1/4"
Shipping Weight ........... 4-1/2 Lbs.
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.
ALWAYS READ
INSTRUCTIONS
BEFORE USING
POWER TOOLS
ALWAYS WEAR
SAFETY GOGGLES
WEAR HEARING
PROTECTION
AVOID
PROLONGED
EXPOSURE TO
VIBRATION
SX221B_opMan_060104.indd 1 6/15/04 11:49:49 AM

SX221B 2 Rev. 06/01/04
This Instruction Manual Contains Important Safety
Information.
Read THIS INSTRUCTION MANUAL Carefully and
understand ALL INFORMATION Before
Operating THIS Tool.
• 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 codes and regulations.
• For safety, top performance and maximum durability of
parts, operate this tool at 90 psig; 6.2 bar max. air pressure
with 3/8" diameter air supply hose.
• Always wear impact-resistant eye
and face protection when operating or
performing maintenance on this tool.
Always wear hearing protection when
using this tool.
• High sound levels can cause perma-
nent hearing loss. Use hearing protection
as recommended by your employer or OSHA
regulation.
• Keep the tool in efficient operating condition.
• Operators and maintenance personnel must be
physically able to handle the bulk, weight and power of this
tool.
• Air under pressure can cause severe
injury. Never direct air at yourself or
others. Always turn off the air supply, drain
hose of air pressure and detach tool from air
supply before installing, removing or
adjusting any accessory on this tool, or before
performing any maintenance on this tool.
Failure to do so could result in injury. Whip
hoses can cause serious injury. Always check
for damaged, frayed or loose hoses and
fittings, and replace immediately. Do not
use quick detach couplings at tool. See
instructions for correct set-up.
• Air powered tools can vibrate in use. Vibration,
repetitive motions or uncomfortable positions over
extended periods of time may be harmful to your hands
and arms. Discontinue use of tool if discomfort, tingling
feeling or pain occurs. Seek medical advice before
resuming use.
• Place the tool on the work before starting the tool. Do not
point or indulge in any horseplay with this tool.
• Slipping, tripping and/or falling while operating air tools
can be a major cause of serious injury or
death. Be aware of excess hose left on the
walking or work surface.
• Keep body working stance balanced and
firm. Do not overreach when operating the
tool.
• Anticipate and be alert for sudden changes in motion during
start up and operation of any power tool.
• Do not carry tool by the hose. Protect the hose from sharp
objects and heat.
• Tool shaft may continue to rotate briefly after throttle is
released. Avoid direct contact with accessories during and
after use. Gloves will reduce the risk of cuts or burns.
• Keep away from rotating end of tool. Do
not wear jewelry or loose clothing. Secure
long hair. Scalping can occur if hair is not kept
away from tool and accessories. Choking can
occur if neckwear is not kept away from tool
and accessories.
• Drill bits can bind suddenly and cause
rotation of the work piece or tool, causing
injury to arms and/or shoulders. Enough
torque is generated to cause falls. Always
use sharp bits. Use less downward pressure at
breakthrough.
• Do not lubricate tools with flammable or
volatile liquids such as kerosene, diesel or jet fuel.
• Do not force tool beyond its rated capacity.
• Do not remove any labels. Replace any damaged labels.
• Use accessories recommended by Sunex Tools.
FAILURE TO OBSERVE THESE WARNINGS COULD RESULT IN INJURY
SX221B_opMan_060104.indd 2 6/15/04 11:49:52 AM

SX221B 3 Rev. 06/01/04
SX221B
1/2" Dr. Reversible Air Drill
REF. PART
NO. NO. DESCRIPTION QTY.
1 RS76201 Motor Housing 1
2 RS76202 Pin 1
3 RS78803 Air Inlet 1
4 RS78804 Trigger 1
5 RS76205 Valve Stem 1
6 RS76206 Reverse Bushing 1
7 RS233A07 O-Ring 1
8 RS78808 Valve Spring 1
9 RS78609 O-Ring 1
10 RS78610 Reverse Lever 1
11 RS78711 Motor Gasket 1
13 RS21114 Ball Bearing 2
14 RS78714 End Plate 2
15 RS76215 Rotor 1
16 RS78816 Rotor Blade 5
17 RS78617 Pin 1
18 RS78718 Cylinder 1
19 RS78619 Spacer 1
20 RS78620 Spacer 1
21 RS78621 Spacer/Washer 1
22 RS78822 Internal Gear 1
REF. PART
NO. NO. DESCRIPTION QTY.
23 RS78823 Planet Gear 3
25 Bushing (Included w/#23)
26 RS78626 Work Spindle w/pins 1
27 RS78627 Reduction Spindle w/pins 1
28 RS21118 Ball Bearing 2
29 RS78829 Chuck Spacer 1
30 RS78630 Chuck Screw 1
31 RS76231 O-Ring 1
32 RS76232 Exhaust Diffuser 1
33 RS76233 Screw 2
34 RS29120 Ball Bearing 1
36 RS78636 Clamp Nut 1
37 RS87109 Drill Chuck (1/2") with key 1
38 RS78638 Set Screw 1
39 RS78639 Retainer 1
40 RS78640 Handle 1
41 RS78641 Planet Gear 3
42 RS78642 Internal Gear 1
43 RS78643 Set Screw 1
Also available: Part#RS87109-KK Key for 1/2” Drill Chuck
SX221B_opMan_060104.indd 3 6/15/04 11:49:55 AM

SX221B 4 Rev. 06/01/04
Operating Instructions • Warning Information • Parts Breakdown
Air Supply...
Tools of this class operate on a wide range of air pressures.
It is recommended that air pressure of these tools measures
90 PSI at the tool while running free. Higher pressure (over
90 psig; 6.2 bar) raises performance beyond the rated
capacity of the tool, which will shorten tool life because of
faster wear and could cause injury.
Always use clean, dry air. Dust, corrosive fumes and/or
water in the air line will cause damage to the tool. Drain the
air tank daily. Clean the air inlet filter screen on at least a
weekly schedule. The recommended hookup procedure can
be viewed in the above figure.
The air inlet used for connecting air supply, has standard
1/4" NPT . Line pressure should be increased to compensate
for unusually long air hoses (over 25 feet). Minimum hose
diameter should be 3/8" I.D. and fittings should have the
same inside dimensions and be tightly secured.
Lubrication...
Lubricate the air motor daily with quality air tool oil. If no
air line oiler is used, run a teaspoon of oil through the tool.
The oil can be squirted into the tool air inlet or into the hose
at the nearest connection to the air supply, then run the tool.
The amount of oil to be used is 1 ounce. Overfilling will
cause a reduction in the power of the tool.
Operation...
Locate center of new hole by using a center punch. Place
drill bit tip in punch mark. Hold drill square with work and
start motor. Apply steady, even pressure. Do not force. Too
much pressure can cause bit to break or overheat. Too little
pressure will keep bit from cutting and cause it to overheat.
Reduce pressure just before bit cuts through the work. When
bit has penetrated work and is spinning freely, take it from
the work while the motor is running, then turn off drill. If the
drill jams in the work, release throttle immediately.
Disconnect the drill before removing bit and determining
cause of trouble. Do not attempt to free the bit by starting
and stopping the motor.
Trigger
Forward &
Reverse Lever
Air Inlet
SX221B_opMan_060104.indd 4 6/15/04 11:49:56 AM
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