Page 1
SXMC38 and SXMC12 07/01/16
Operating Instructions • Warning Information • Parts Break down
WARNING
SXMC38 and SXMC12
3/8" and 1/2" SUPER DUTY MINI
IMPACT WRENCH
ALWAYS READ INSTRUCTIONS BEFORE
USING POWER TOOLS
ALWAYS WEAR SAFETY GOGGLES
ALWAYS WEAR HEARING PROTECTION
AVOID PROLONGED EXPOSURE TO VIBRATION
SXMC38 - SPECIFICATIONS SXMC12 - SPECIFICATIONS
Breakaway Torque .................................. 450 ft. lbs.
Working Torque .............................102 ~350 ft. lbs.
Free Speed ............................................ 7,000 RPM
Air Inlet .......................................................1/4" NPT
Recommended Hose Size ......................... 3/8" I.D.
Avg. Air Cons. ...........................................3.76 CFM
Sound Level ..................................................98 dbA
Weight ...........................................................2.9 lbs.
Length .............................................................. 4.29"
Vibration Level ........................................ 7.5 m/sec²
Breakaway Torque .................................. 500 ft. lbs.
Working Torque .............................102 ~350 ft. lbs.
Free Speed ............................................ 9,500 RPM
Air Inlet .......................................................1/4" NPT
Recommended Hose Size ......................... 3/8" I.D.
Avg. Air Cons. ...........................................3.76 CFM
Sound Level ..................................................98 dbA
Weight ...........................................................2.9 lbs.
Length .............................................................. 4.29"
Vibration Level ........................................ 7.5 m/sec²
© Copyright 2016, Sunex Tools
®
Page 2
WARNING
FAILURE TO OBSERVE THESE WARNINGS COULD RESULT IN INJURY
THIS INSTRUCTION MANUAL CONTAINS IMPORTANT SAFETY
INFORMATION.
READ THIS INSTRUCTION MANUAL CAREFULLY AND
UNDERSTAND ALL INFORMATION BEFORE OPERATING THIS
TOOL.
• Read and understand all instructions. Failure to follow
all instructions listed below, may result in electric
shock, fire, explosion and/or serious personal injury. It is
the responsibility of the owner to make sure all personnel
read this manual prior to using the device. It is also
the responsibility of the device owner to keep this
manual intact and in a convenient location for all to
see and read. If the manual or product labels are lost
or not legible, contact Sunex Tools for replacements.
If the operator is not fluent in English, the product
and safety instructions shall be read and discussed
with the operator in the operator's native language by
the purchaser/owner or his designee, making sure that
the operator comprehends its contents.
• 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 protection when
operating or performing maintenance on this tool (users
and bystanders).
• High sound levels can cause permanent hearing loss.
Always use hearing protection as recommended by your
employer an OSHA regulations while using this tool
(users and bystanders).
• 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.
• Keep tool out of reach of children.
• 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.
• 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.
• Place the tool on the work before starting the tool. Do not
point or indulge in any horseplay with this tool.
• Keep body working stance balanced and firm. Do
not overreach when operating the tool.
• Note direction of rotation BEFORE operating this 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.
• Do not use (or modify) the tool for any other purpose
than that for which it was designed without consulting
the manufacturer's authorized representative.
• Impact wrenches are not torque control devices. Fasteners
with specific torque requirements must be checked with
suitable torque measuring devices after installation with an
impact wrench.
• Use only impact sockets and accessories on this tool.
Do not use hand sockets and accessories.
• Use accessories recommended by Sunex Tools.
• Do not lu bri cate tools with flam ma ble or vol a tile liq uids
such as ker o sene, die sel or jet fuel.
• This tool is not insulated against electric shock.
• This tool must not be used in explosive atmospheres.
• Servicing and repairs should only be made by an
authorized service center.
• Do not force tool beyond its rated capacity.
• Do not remove any labels. Replace damaged labels.
• This product may contain one or more chemicals known
to the State of California to cause cancer and birth
defects or other reproductive harm. Wash hands
thoroughly after handling.
• Failure to heed these warnings may result in serious or fatal
personal injury and/or property damage.
SXMC38 and SXMC12 2 07/01/16
Page 3
Operating Instructions • Warning Information • Parts Break down
Whip Hose
Nipple
Hose
fig. 1.
Do Not Install
Quick Coupling
Here
INSTRUCTION MANUAL
This product is designed to tighten or loosen threaded fasteners. No
other use is permitted.
AIR SUPPLY REQUIREMENTS
Tools operate on a wide range of air pressures. It is recommended that
air pressure measures 90 psig at the tool with the trigger fully depressed
and no load applied to the tool. Higher pressure (over 90 psig; 6.2 bar)
raises performance beyond the rated capacity of the tool, which will
shorten tool life 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 water from air lines and
compressor prior to running tool. Clean the air inlet filter screen weekly.
The recommended hookup procedure can be viewed in the Figure 1.
Air Supply
Nipple
Filter
Regulator Oiler Quick Coupler Leader
Drain Daily
OPERATION
Always turn off the air supply, drain hose of air pressure and
detach tool from air supply before installing, removing or adjusting
any part or accessory on this tool, or before performing any maintenance on this tool.
This im pact wrench is rated at 3/8" and 1/2" USS bolt size. Rat ing must
be down grad ed for spring U bolts, tie bolts, long cap screws, double
depth nuts, badly rust ed conditions and spring fas ten ers as they absorb
much of the impact power. When possible, clamp or wedge the bolt to
prevent springback.
Soak rusted nuts in pen e trat ing oil and break rust seal before removing
with im pact wrench. If nut does not start to move in three to five sec onds,
use a larger size impact wrench. Do not use impact wrench be yond rated
ca pac i ty as this will dras ti cal ly reduce tool life.
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.
Always turn off the air supply, drain hose of air pressure and detach tool
from air supply before installing, removing or adjusting any part or accessory on this tool, or before performing any maintenance on this tool.
Ensure an accessible emergency shut off valve has been installed in the
air supply line and make others aware of its location.
LUBRICATION
Lubricate the air motor daily with high quality air tool oil. If no air line oiler
is used, run 1/2 oz. of oil through the tool. The oil can be squirted into the
tool air inlet or into the hose at the nearest con nec tion to the air supply,
then run the tool. The oil plug is only for adding multi-purpose grease
after repair or maintenance of the impact mechanism. Overfilling will
cause a re duc tion in the power of the tool.
WARNING: After an air tool has been lubricated, oil will discharge
through the exhaust port during the first few seconds of operation.
The exhaust port must be covered with a towel before applying air
pressure to prevent serious injury.
The reversing lever is used to change the direction of the tool. When the
valve is pushed to the left, the tool is in a for ward or right hand direction.
When the valve is pushed to the right, the direction is reverse or left hand.
NOTE: Actual torque on a fastener is directly related to joint hardness, tool speed, condition of socket and the time the tool is allowed
to impact. Use the simplest possible tool-to-socket hook up. Every
connection absorbs energy and reduces power.
WARNING: Use only impact sockets and accessories on this tool.
Do not use hand sockets and accessories.
SXMC38 and SXMC12 3 07/01/16
Page 4
SXMC38 and SXMC12
3/8" and 1/2" SUPER DUTY MINI
IMPACT WRENCH
ITEM NO. PART NO. DESCRIPTION QTY.
1 RS383821
RS381221
2 RS381222
3 RS381223
4 RS381224
5 RS381207 Motor Housing (Incl. #5-1) 1
5-1 Grease Fitting (Incl. with #5) 1
6 RS381218 Anvil Bushing 1
7 RS381234
8 RS381236
9 RS381239 Hex SOC. HD Bolts 4
11
12 RS381226
13 RS381228
14 RS381227
15 RS381229
16 RS381232 Rear Plate 1
17 RS381233
18 RS381230
19
RS85324 Ball Bearing
RS381231
3/8"
Dr. Anvil Assembly 1
(Incl. O-Ring & Socket Retainer
1/2"
Dr. Anvil Assembly 1
(Incl. O-Ring & Socket Retainer
Hammer Pin 2
Hammer Cage
Hammer
Gasket
Housing Cap 1
Front Plate
Rotor Blade
Rotor
Cylinder
Ball Bearing
Spring Pin
Spring Pin
1
1
1
1
1
6
1
1
1
1
1
ITEM NO. PART NO. DESCRIPTION QTY.
20
21
22
23
24
25
26
27
28
29
30
31 RS381204 Valve Stem 1
32
33
34
35
36
37
Not Shown RSSXMC38PLK
RS381208 Trigger 1
RS381212 Reverse Valve 1
RS381210 Steel Ball 1
RS381211 Spring 1
RS381213 O-Ring 2
RS381214 O-Ring 1
RS381237
RS381238
RS381216 Spring Pin 1
RS381206 Seal Bushing 1
RS381205 Seal 1
RS381203 Throttle Valve Spring 1
RS381202 Exhaust Deflector 1
RS381201 Air Inlet 1
RS381235
RS381240
RS383841
RSSXMC12PLK
Power Management Knob
Screw
Washer
Grip
SXMC38 - Muffler 1
SXMC38PLK Product Label Kit 1
SXMC12PLK Product Label Kit 1
1
1
1
1
SXMC38 and SXMC12 4
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