SX275B 1 Rev. 05/02/02
Operating Instructions • Warning Information • Parts Breakdown
Blows Per Minute ..................3,000
Bore ..................................11/16”
Stroke ................................2-5/8”
Air Inlet Thread ..............1/4" NPT
Hose Size ........................3/8” I.D.
SX275B
MEDIUM DUTY
AIR HAMMER
Avg. Air Consumption ..........4 cfm
Rec. Air Pressure ..90 psig (6.2bar)
Sound Level......................105 dBA
Length ................................6-3/4”
Shipping Weight............3-1/2 Lbs.
SPECIFICATIONS
ALWAYS READ
INSTRUCTIONS
BEFORE USING
POWER TOOLS
ALWAYS WEAR
SAFETY GOGGLES
WEAR HEARING
PROTECTION
AVOID
PROLONGED
EXPOSURE TO
VIBRATION
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.
SX275B 2 Rev. 05/02/02
WARNING!
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 permanent
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.
• Never use a chisel as a handstruck tool. They are
designed and heat treated to be used only in air
hammers. Select the correct shank and retainer for the
tool.
• Never use dull accessories. Never cool a hot accessory in
water as brittleness and early failure can result. Accessory
breakage or tool damage may result from prying. Take
smaller bites to avoid getting stuck.
• Do not lubricate tools with flammable or volatile liquids
such as kerosene, diesel or jet fuel.
• Don’t 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.
SX275B 3 Rev. 05/02/02
SX275B
Medium Air Hammer
1
2
8
3
7
9
10
12
12
13
15
14
16
17
18
19
REF.
NO.
1
2
3
7
8
9
10
12
13
14
15
16
17
18
19
PART NO.
87301
275B02
275B03
275B07
275B08
275B09
275B10
275B12
275B13
275B14
275B15
275B16
275B17
275B18
275B19
QTY.
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
DESCRIPTION
Spring Retainer
Cylinder
Piston
Valve Disc
Valve Assembly
Handle
Trigger
Pin
O-Ring
Regulator
O-Ring
Valve Stem
Valve Ball
Valve Spring
Air Inlet
SX275B 4 Rev. 05/02/02
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 the tool’s 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.
Operation...
Always place a chisel in the hammer and hold the tool
down to the work before operating. Damage to the tool
or the retainer may result if this precaution is not followed.
The chisel retainers are not designed for complete safety
against accidental release of cutters or hammers. To avoid
injury, the throttle must never be depressed unless the
chisel is held firmly against the work place. When tool is
not in actual use, the chisel must be removed. During
operation, safety goggles should always be used to guard
against flying rust and chips. When using tool, regulate
the speed so that the chisel is not being driven out of the
cylinder. If piston is allowed to strike the cylinder wall,
internal damage will result.
To change chisel, pull back on spring hook and insert
chisel. Release spring hook.
To regulate air, turn air regulator knob out for maximum
air pressure and in for minimum.
Limited Warranty...
SUNEX INTERNATIONAL, INC. WARRANTS TO ITS CUSTOMERS THAT THE COMPANY’S SUNEX TOOLS®BRANDED
PRODUCTS ARE FREE FROM DEFECTS IN WORKMANSHIP AND MATERIALS.
Sunex International, Inc. will repair or replace its Sunex Tools
®
branded products which fail to give satisfactory service due to defective
workmanship or materials, based upon the terms and conditions of the following described warranty plans attributed to that specific product. This
product carries a ONE-YEAR warranty. During this warranty period, Sunex Tools will repair or replace at our option any part or unit which proves
to be defective in material or workmanship.
Other important warranty information...
This warranty does not cover damage to equipment or tools arising from alteration, abuse, misuse, damage and does not cover any repairs or
replacement made by anyone other than Sunex Tools or its authorized warranty service centers.The foregoing obligation is Sunex Tools’ sole
liability under this or any implied warranty and under no circumstances shall we be liable for any incidental or consequential damages.
Note: Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not
apply to you. Return equipment or parts to Sunex Tools, or an authorized warranty service center, transportation prepaid. Be
certain to include your name and address, evidence of the purchase date, and description of the suspected defect.
If you have any questions about warranty service, please write to Sunex Tools. This warranty gives you specific legal rights and you may also have
other rights which vary from state to state. Repair kits and replacement parts are available for many of Sunex Tools products regardless of whether
or not the product is still covered by a warranty plan.
Shipping Address: Sunex Tools • 315 Hawkins Rd. • Travelers Rest, SC 29690
Mailing Address: Sunex Tools • P.O. Box 4215 • Greenville, SC 29608
Nipple
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