Ryobi RA-N-B User manual

AIR NIBBLER
OPERATOR'S MANUAL
ORIGINAL INSTRUCTIONS
RA-N-B

Important!
It is essential that you read the instructions in this manual before
operating this machine.
Subject to technical modifications.

1. Cutting set
2. Cutting slot
3. Trigger
4. Air inlet
DESCRIPTION
Fig.1
Fig.3 Fig.4
Fig.5
Fig.2
Fig.6
15 mm
1
3
2
3
4
5
6
7
1
1
8
9
1
3
2
5. NITTO style coupler
6. Quick connector (not
included)
7. Air hose (not included)
8. Cutter
9. Cutter retaining
screw
10. Connecting rod
11. Locking nut
12. Nibbler head

Fig.7
Fig.9
Fig.11
Quick
connector
Quick
connector Lubricator Filter
Cut-off
valve
Regulator
(0-8.5 bar)
Quick
coupler
Tool Air
compressor
Quick
coupler
Air hose
Fig.8
Fig.10
1
2
35mm
15 mm
22 mm
9
1
11
12
810

1
GENERAL SAFETY RULES
■For multiple hazards, read and understand the safety
instructions before installing, operating, repairing,
maintaining, changing accessories on, or working
near the nibbler or shear. Failure to do so can result in
serious bodily injury.
■Only qualified and trained operators should install,
adjust or use the nibbler or shear.
■Do not modify this nibbler or shear. Modifications
can reduce the effectiveness of safety measures and
increase the risks to the operator.
■Do not discard the safety instructions; give them to the
operator.
■Do not use the nibbler or shear if it has been damaged.
■Tools shall be inspected periodically to verify that the
ratings and markings required by this part of ISO 11148
are legibly marked on the tool. The employer/user
shall contact the manufacturer to obtain replacement
marking labels when necessary.
■To prevent serious injury from explosion, use only
clean, dry, regulated, and compressed air to power
the product. Do not use oxygen, carbon dioxide,
combustible gases, or any other bottled gas as power
source for the product.
PROJECTILE HAZARDS
■Disconnect the nibbler or shear from the energy
source when changing inserted tool or accessories.
■Be aware that failure of the work piece or accessories
or even of the inserted tool itself can generate high-
velocity projectiles.
■Always wear impact-resistant eye protection during
operation of the tool. The grade of protection required
should be assessed for each use.
■Ensure that the work piece is securely fixed.
■Ensure that metal cuttings are directed so as not to
cause a hazard.
OPERATING HAZARDS
■Use of nibblers and shears can expose the operator's
hands to hazards including cuts, abrasions and heat:
–avoid contact with the cutter whenever the nibbler
or shear is connected to the power supply;
–cutting with nibblers and shears creates sharp
edges.
■Wear relevant protective equipment such as gloves.
■Operators and maintenance personnel shall be
physically able to handle the bulk, weight and power
of the tool.
■Hold the tool correctly; be ready to counteract normal
or sudden movements and have both hands available.
■Maintain a balanced body position and secure footing.
■Release the start-and-stop device in the case of an
interruption of the energy supply.
■Use only lubricants recommended by the manufacturer.
■Avoid direct contact with the inserted tool during and
after use as it can become hot.
■Sharp tools should always be used.
■Avoid unsuitable postures as it is likely for these
positions not to allow counteracting of normal or
unexpected movement of the tool.
■Unexpected tool movement or breakage of cutters can
cause injuries.
■Warnings shall be given against the risk of explosion
or fire due to the material being processed.
■Dress properly. Do not wear loose clothing or
jewellery. Keep your hair, clothing, and gloves away
from moving parts. Loose clothes, jewellery or long
hair can be caught in moving parts.
REPETITIVE MOTIONS HAZARDS
■When using a nibbler or shear to perform work-related
activities, the operator can experience discomfort in
the hands, arms, shoulders, neck or other parts of the
body.
■While using a nibbler or shear, the operator should
adopt a comfortable posture whilst maintaining secure
footing and avoiding awkward or off-balance postures.
The operator should change posture during extended
tasks; this can help avoid discomfort and fatigue.
■If the operator experiences symptoms such as
persistent or recurring discomfort, pain, throbbing,
aching, tingling, numbness, burning sensations or
stiffness, these warning signs should not be ignored.
The operator should tell the employer and consult a
qualified health professional.
ACCESSORY HAZARDS
■Disconnect the nibbler or shear from the energy
supply before fitting or changing the inserted tool or
accessory.
■Use only sizes and types of accessories and
consumables that are recommended by the
manufacturer of nibblers or shears; do not use other
types or sizes of accessories or consumables.
■Cutters can become hot during use; do not touch.
■Do not use cracked or deformed accessories or
inserted tools.
WORKPLACE HAZARDS
■Slips, trips and falls are major causes of workplace
injury. Be aware of slippery surfaces caused by use of
the tool and also of trip hazards caused by the air line
or hydraulic hose.
■Proceed with care in unfamiliar surroundings. There
can be hidden hazards, such as electricity or other
utility lines.

2
■The nibbler or shear is not intended for use in
potentially explosive atmospheres and is not insulated
against contact with electric power.
■Ensure that there are no electrical cables, gas pipes,
etc., which can cause a hazard if damaged by use of
the tool.
DUST AND FUME HAZARDS
■Dust and fumes generated when using nibblers and
shears can cause ill health (for example cancer, birth
defects, asthma and/or dermatitis); risk assessment
and implementation of appropriate controls for these
hazards are essential.
■Risk assessment should include dust created by the
use of the tool and the potential for disturbing existing
dust.
■Operate and maintain the nibbler or shear as
recommended in these instructions, to minimize dust
or fume emissions.
■Direct the exhaust so as to minimize disturbance of
dust in a dust-filled environment.
■Where dust or fumes are created, the priority shall be
to control them at the point of emission.
■All integral features or accessories for the collection,
extraction or suppression of airborne dust and fumes
should be correctly used and maintained in accordance
with the manufacturer's instructions.
■Select, maintain and replace the consumable/inserted
tool as recommended in the instruction handbook to
prevent an unnecessary increase in dust or fumes.
■Use respiratory protection in accordance with
the employer's instructions and as required by
occupational health and safety regulations.
NOISE HAZARDS
■Exposure to high noise levels can cause permanent,
disabling hearing loss and other problems, such as
tinnitus (ringing, buzzing, whistling or humming in the
ears). Therefore, risk assessment and implementation
of appropriate controls for these hazards are essential.
■Appropriate controls to reduce the risk may include
actions such as damping materials to prevent work
pieces from “ringing”.
■Use hearing protection in accordance with employer's
instructions and as required by occupational health
and safety regulations.
■Operate and maintain the nibbler or shear as
recommended in the instruction handbook, to prevent
an unnecessary increase in the noise level.
■Select, maintain and replace the consumable/inserted
tool as recommended in the instruction handbook, to
prevent an unnecessary increase in noise.
■If the nibbler or shear has a silencer, always ensure it
is in place and in good working order when the nibbler
or shear is being operated.
VIBRATION HAZARDS
The information for use shall draw attention to vibration
hazards that have not been eliminated by design and
construction and remain as residual vibration risks. It shall
enable employers to identify the circumstances in which
the operator is likely to be at risk from vibration exposure.
If the vibration-emission value obtained using ISO 28927-
7 does not adequately represent the vibration emission
in the intended uses (and foreseeable misuses) of the
machine, additional information and/or warnings shall be
supplied to enable the risks arising from vibration to be
assessed and managed.
■Exposure to vibration can cause disabling damage to
the nerves and blood supply of the hands and arms.
■Wear warm clothing when working in cold conditions
and keep your hands warm and dry.
■If you experience numbness, tingling, pain or whitening
of the skin in your fingers or hands, stop using the
nibbler or shear, tell your employer and consult a
physician.
■Operate and maintain the nibbler or shear as
recommended in this instruction handbook, to prevent
an unnecessary increase in vibration.
■Hold the tool with a light but safe grip, taking account
of the required hand reaction forces, because the risk
from vibration is generally greater when the grip force
is higher.
ADDITIONAL SAFETY INSTRUCTIONS FOR
PNEUMATIC POWER TOOLS
■Air under pressure can cause severe injury:
–always shut off air supply, drain hose of air
pressure and disconnect tool from air supply when
not in use, before changing accessories or when
making repairs;
–never direct air at yourself or anyone else.
■Whipping hoses can cause severe injury. Always
check for damaged or loose hoses and fittings.
■Cold air shall be directed away from hands.
■Whenever universal twist couplings (claw couplings)
are used, lock pins shall be installed and whipcheck
safety cables shall be used to safeguard against
possible hose-to-tool or hose-to-hose connection
failure.
■Do not exceed the maximum air pressure stated on
the tool.
■Never carry an air tool by the hose.

3
SPECIFICATIONS
Air Nibbler
Model number RA-N-B
Average air consumption 335 L/min @
6.3 bar (90 psi)
No-load speed 3000 spm
Maximum working pressure 6.3 bar (90 psi)
Weight 0.8 kg
Air inlet size 6.35 mm (1/4”)
Air hose ID 9.52 mm (3/8”)
Maximum cutting thickness 1.0 mm
Recommended cutting material Zinc plated steel,
roong steel
Recommended material
hardness HRB<70
A-weighted sound pressure
level 78dB(A), k=3dB
Sound power level 89dB(A), k=3dB
Vibration value 4.0 m/s2
Uncertainty 1.5 m/s2
Noise emission values are in accordance with EN ISO
4871 and EN ISO 15744, and tested at no load.
Vibration emission values are in accordance with EN ISO
28927-7, and tested with load.
Replacement parts
Cutter, OD6.5 x L48.6 079081001004
INTENDED USE
The product is intended for free-style cutting of zinc plated
steel or roong steel with maximum thickness of 1.0 mm
and material hardness of HRB<70.
Use the product only for its intended purpose.
RESIDUAL RISKS
Even if you are operating this product in accordance
with all the safety requirements, potential risks of injury
and damage remain. The following dangers can arise in
connection with the structure and design of this product:
1. Health defects resulting from vibration and noise
emission if the product is being used over long periods
of time or not adequately managed and properly
maintained.
–Wear hearing protection and limit operating time.
–Do not use damaged equipment. If abnormal
noise, vibration or air leak occurs, stop using
the product and have the product inspected and
corrected before use. If abnormality continues,
send the product to an authorised service centre
for repair.
2. Injuries and damage to property due to broken cutting
attachments or the sudden impact of hidden objects
during use.
–To prevent serious personal injury, always wear
safety equipment such as heavy-duty work gloves,
non-skid safety shoes, hardhat, safety goggles,
safety mask, hearing protection, protective work
clothes, etc. before use. Inspect workpiece and
tool for hidden objects before operation.
3. Danger of injury and property damage caused by
ying objects.
–Prior to operation, protect other people and
property in the work area from ying debris by
providing barriers or shields. Wear appropriate
personal protective equipment.
ASSEMBLY
AIR SUPPLY SET UP
■Ensure the trigger is not depressed before connecting
to the air supply.
■Connect the product to a quick coupler.
■Attach the air hose to the compressor's air outlet. Then
connect the other end to the quick coupler attached to
the product.
NOTE: The air hose must be long enough to reach
the work area with enough extra length to allow free
movement while working.
■Turn on the air compressor according to the
manufacturer's instructions. Allow it to build up
pressure until it cycles off.
■Adjust the air compressor's output regulator to not
more than 6.3 bar (90 psi).
■The minimum hose diameter should be 9.52 mm
(1/4”) I.D. and the fittings must have the same inside
dimensions.
■Check for leaks in the air connections. Repair as
needed.
■Keep hose away from heat, oil and sharp edges. Check
hose for wear, and make sure that all connections are
secure.
■If the product will not be used, turn off and disconnect
the air supply. Discharge any residual air pressure to
prevent accidental operation.
OPERATION
PREPARATION
■Designate a work area which is clean and well lit.
Prevent access by children and animals.

4
■Route the air hose along a safe route to reach the
work area. The air hose must be long enough to reach
the work area with enough extra length to allow free
movement while working.
■Make sure that the material to be cut does not exceed
the capacity of the tool.
■Make sure no hazardous objects such as utility lines or
foreign objects are present nearby.
■If possible, clamp the workpiece so that it will not move
freely.
WARNING
Prior to operation, protect other people and property in
the work area from ying debris by providing barriers
or shields. Wear appropriate personal protective
equipment.
GENERAL OPERATING INSTRUCTION
See gure 3-4.
■Ensure the trigger is not depressed before connecting
to the air supply.
■Connect the air hose to the quick coupler attached to
the product.
■Turn the compressor's regulator to 6.3 bar (90 psi).
WARNING
Ensure the air supply is clean and does not exceed
6.3 bar (90 psi) while operating the product. Too high an
air pressure and unclean air will shorten the product's
life due to excessive wear, and may be dangerous
causing damage and/or personal injury.
■Turn on the compressor. Hold the nibbler firmly.
■Insert the nibbler head's slot into the workpiece.
Squeeze the trigger and apply a forward motion along
the line of cut. Do not use any additional force upon
the nibbler.
■When finished cutting, release the trigger. Turn off
the air compressor and squeeze the trigger once to
release residual pressure in the nibbler. Disconnect
the nibbler from the air supply.
■Clean and store the nibbler out of reach of children.
If the product is jammed or stalls:
■Remove the product from the workpiece.
■Disconnect the product from air supply.
■Check and remove any foreign materials on cutting
set. Loosen and remove cutting set if necessary.
■Ensure the product performs properly before resuming
operation.
CAUTION
Do not allow the product to free run for an extended
period of time as this will shorten its life.
LUBRICATION
An automatic in-line lter-regulator-lubricator is
recommended (Fig. 11) as it increases product life and
keeps the product in sustained operation. The in-line
lubricator should be regularly checked and lled with air
tool oil.
Proper adjustment of the in-line lubricator is performed by
placing a sheet of paper next to the exhaust ports and
holding the throttle open for approximately 30 seconds.
The lubricator is properly set when a light stain of oil
collects on the paper. Excessive amounts of oil should be
avoided.
If it becomes necessary to store the product for an extended
period of time (overnight, weekend, etc.), it should receive
a generous amount of lubrication at that time. The product
should be run for approximately 30 seconds to ensure oil
has been evenly distributed throughout the product. The
product should be stored in a clean and dry environment.
●It is most important that the product be properly
lubricated by keeping the air line lubricator filled
and correctly adjusted. Without proper lubrication
the product will not work properly and parts will
wear prematurely.
●Use correct lubricant in the air line lubricator. The
lubricator should be of low air flow or changing air
flow type, and should be kept filled to the correct
level. Use only recommended lubricants, specially
made for pneumatic applications. Substitutes
may harm the rubber compounds in the product's
O-rings and other rubber parts.
IMPORTANT!
See Figure 11.
If a lter/regulator/lubricator is not installed on the air
system, air operated tools should be lubricated at least
once a day or after 2 hours of work with 2 - 6 drops
of #10 spindle oil, depending on the work environment,
directly through the air inlet.
MAINTENANCE
■Disconnect the product from the air source before
changing accessories or making adjustments.
■Keep the product safe by regular maintenance.
Maintenance shall be performed weekly.
■Always keep your air tool clean and lubricated. Daily
lubrication is essential to avoid internal corrosion and
possible failure.
■#10 spindle oil is recommended for lubrication.

5
■Only lubricants recommended by the manufacturer
should be used.
■Drain the air tank daily. Water in the air line will
damage the product.
■If the product cannot be used anymore, make sure to
dispose of it so as not to impose hazards on people
and the environment.
■Clean the air inlet filter on the nibbler and compressor
weekly.
REPLACING THE BLADE
See gure 5-10.
■Make sure to disconnect the product from air supply.
■Loosen and remove the cutting set.
■Loosen and remove cutter retaining screw.
■Remove the cutter from the cutter retaining screw.
■Insert a new cutter (not included) into the connecting
rod. Then insert the cutter retaining screw and tighten
it. (Tightening torque: 3-6 Nm)
■Screw in the cutting set. Make sure that:
–the hole on the cutting set faces the front as
shown, and
–the cutting set is 35 mm protruding from the
nibber's head.
■Using a wrench to hold the cutting set in place, tighten
the locking nut.
WARNING
For greater safety and reliability, all repairs should be
performed by an authorised service centre.
SYMBOLS
Safety alert
CE conformity
Please read and understand all instructions
before operating the product, follow all
warnings and safety instructions.
Please read the instructions carefully before
starting the product.
Wear eye protection.
Wear ear protection.
Lubricate with air tool oil daily.

6
PARTS LIST
No. Description No. Description No. Description No. Description
01 Cutting Set 12 Bearing 6200-2Z 23 Straight Pin 1.5*6 32.2 Strainer
02 Hexagon Nut 13 Washer 24 Cylinder 33 O-ring 3.2*1.9y
03 Screw 14 Snap Ring 25 Rotor 34 Pin
04 Cutter Pole 15 Hexagon Nut 26 Blade 35 Spring
05 Connecting Rod 16 Planet Cageincl 27 Back Cylinder Head 36 O-ring 8*2
06 L-Head 17 Pin 28 Bearing 626-2Z 37 Nut
07 Shaft Bushing 18 Planet Gear 29 Housing 38 Coupler
08 O-ring 17*1.8 19 Gear Ring 30 Rivet
09 Screw 20 Washer 31 Trigger
10 Swing Block 21 Bearing 608-2Z 32 Air Inlet Connector
Assembly
11 Eccentric Shaft 22 Front Cylinder Head 32.1 Air Inlet Connector
npt 1/4
20180404v1

7
TROUBLESHOOTING
WARNING
If any of the following symptoms appears during operation, stop using the product immediately, or serious personal
injury could result. Only qualied persons or an authorised service centre can perform repairs or replacement of the
product.
PROBLEM CAUSE SOLUTION
Product will not run. 1. Compressor is not turned on.
2. Air line is not connected
properly.
3. There are iron chips into
cutting set.
1. Turn compressor on.
2. Check that air line is connected
properly.
3. Remove the cutting set and any chips
found.
Product runs at normal speed but
fails under load.
1. Motor parts are worn.
2. Cam clutch is worn or sticking
due to lack of lubricant.
1. Lubricate clutch housing.
2. Check for excess clutch oil. Clutch
cases need only be half full. Overlling
can cause drag on high speed clutch
parts, i.e. a typical oiled/lubricated tool
requires 14.20 ml (1/2 ounce) of oil.
3. Grease lubrication
NOTE: Heat usually indicates
insufficient grease in chamber. Severe
operating conditions may require more
frequent lubrication.
Product runs slowly. Air ows
slightly from exhaust.
1. Motor parts are jammed with
dirt particles.
2. Power regulator is in closed
position.
3. Air ow is blocked by dirt.
1. Check air inlet lter for blockage.
2. Pour air tool lubricating oil into air inlet
as per instructions.
3. Operate the product in short bursts
quickly reversing rotation back and
forth where applicable.
4. Repeat above as needed.
Product will not run. Air ows
freely from exhaust.
1. One or more motor vanes are
stuck due to material build up.
1. Pour air tool lubricating oil into air inlet.
2. Operate the product in short bursts of
forward and/or reverse rotation where
applicable.
3. Tap motor housing gently with a plastic
mallet.
4. Disconnect the air supply. Free the
motor by rotating drive shank manually
where applicable.
5. If the product remains jammed, return
to the service centre.
Product will not shut off. 1. ‘O’ rings throttle valve is
dislodged from seat inlet valve.
1. Replace the ‘O’ ring.
NOTE: Repairs should be carried out
by a qualified person.
NITTO is a registered trademark owned by Nitto Kohki Co., Ltd

Techtronic Industries Australia Pty Ltd
31 Gilby Road, Mount Waverley, VIC 3149,
Melbourne, Australia
Techtronic Industries N.Z. Limited
2 Landing Drive, Mangere
Auckland, 2022, New Zealand