jcb JCB-SDS920 Safety And Operating Manual

JCB, SO53 3LE
www.JCBDIY.com
Customer Helpline 0333 0143092

Safety and operating manual

SDS Plus Hammer
JCB-SDS920

JCB, SO53 3LE
www.JCBDIY.com
Customer Helpline 0333 0143092

WARNING! Read all safety
warnings and all instructions.

Failure to follow the warnings and
instructions may result in electric
shock, fire and/or serious injury.

Save all warnings and instructions
for future reference.

The term "power tool" in the
warnings refers to your electric
(corded) power tool or battery­operated (cordless) power tool.

1. Work area safety

a) Keep work area clean and well
lit.

Cluttered or dark areas invite

accidents.

b) Do not operate power tools in
explosive atmospheres, such as in
the presence of flammable liquids,
gases or dust.

Power tools create
sparks which may ignite the dust
or fumes.

c) Keep children and bystanders
away while operating a power tool.

Distractions can cause you to
lose control.

2. Electrical safety

a) Power tool plugs must match
the outlet. Never modify the plug
in any way. Do not use any adapter
plugs with grounded power tools.

Unmodified plugs and matching
outlets will reduce risk of electric
shock.

b) Avoid body contact with
grounded surfaces, such as pipes,
radiators, ranges and refrigerators.

There is an increased risk of
electric shock if your body is
grounded.

c) Do not expose power tools
to rain or wet conditions.

Water
entering a power tool will increase
the risk of electric shock.

d) Do not abuse the cord. Never
use the cord for carrying, pulling
or unplugging the power tool.
Keep cord away from heat, oil,
sharp edges or moving parts.

Damaged or entangled cords
increase the risk of electric shock.

e) When operating a power tool
outdoors, use an extension cord
suitable for outdoor use.

Use of
a cord suitable for outdoor use
reduces the risk of electric shock.

f) If operating a power tool in a
damp location is unavoidable, use
a residual current device (RCD)
protected supply.

Use of an RCD

reduces the risk of electric shock.

3. Personal safety

a) Stay alert, watch what you are
doing and use common sense
when operating a power tool. Do
not use a power tool while you
are tired or under the influence
of drugs, alcohol or medication.

A moment of inattention while

GENERAL POWER TOOL SAFETY WARNINGS

ORIGINAL INSTRUCTIONS

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operating power tools may result
in serious personal injury.

b) Use personal protective
equipment. Always wear eye
protection.

Protective equipment
such as dust mask, non-skid
safety shoes, hard hat, or hearing
protection used for appropriate
conditions will reduce personal
injuries.

c) Prevent unintentional starting.
Ensure the switch is in the off­position before connecting to
power source and/or battery pack,
picking up or carrying the tool.

Carrying power tools with your
finger on the switch or energising
power tools that have the switch
on invites accidents.

d) Remove any adjusting key or
wrench before turning the power
tool on.

A wrench or a key left
attached to a rotating part of the
power tool may result in personal
injury.

e) Do not overreach. Keep proper
footing and balance at all times.

This enables better control of
the power tool in unexpected
situations.

f) 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.

g) If devices are provided for the
connection of dust extraction and

collection facilities, ensure these
are connected and properly used.

Use of dust collection can reduce
dust-related hazards.

4. Power tool use and care

a) Do not force the power tool.
Use the correct power tool for
your application.

The correct
power tool will do the job better
and safer at the rate for which it
was designed.

b) Do not use the power tool if
the switch does not turn it on and
off.

Any power tool that cannot
be controlled with the switch is
dangerous and must be repaired.

c) Disconnect the plug from
the power source and/or the
battery pack from the power tool
before making any adjustments,
changing accessories, or storing
power tools.

Such preventive
safety measures reduce the
risk of starting the power tool
accidentally.

d) Store idle power tools out of
the reach of children and do not
allow persons unfamiliar with the
power tool or these instructions
to operate the power tool.

Power
tools are dangerous in the hands
of untrained users.

e) Maintain power tools. Check
for misalignment or binding of
moving parts, breakage of parts
and any other condition that may
affect the power tool’s operation.

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If damaged, have the power
tool repaired before use.

Many
accidents are caused by poorly
maintained power tools.

f) Keep cutting tools sharp and
clean.

Properly maintained cutting
tools with sharp cutting edges are
less likely to bind and are easier
to control.

g) Use the power tool,
accessories and tool bits
etc. in accordance with these
instructions, taking into account
the working conditions and the
work to be performed.

Use of the
power tool for operations different
from those intended could result
in a hazardous situation.

5. Service

a) Have your power tool serviced
by a qualified repair person using
only identical replacement parts.

This will ensure that the safety of
the power tool is maintained.

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HAMMER SAFETY WARNINGS

1. Wear ear protectors.

Exposure

to noise can cause hearing loss.

2. Use auxiliary handle(s), if
supplied with the tool.

Loss of
control can cause personal injury.

3. Hold power tool by insulated
gripping surfaces, when
performing an operation where
the cutting accessory may contact
hidden wiring or its own cord.

Cutting accessory contacting a
"live" wire may make exposed
metal parts of the power tool "live"
and could give the operator an
electric shock

.

ADDITIONAL SAFETY RULES
FOR HAMMER

1. Always wear a dust mask.

2. Safety boots are
recommended at all times
especially when using the chisel
actions.

3. Proper safety gloves are also
recommended.

4. The high torque machine
should not be used, while
standing on a ladder.

5. Do not use damaged or worn
Chisel bits.

6. Do not run the machine with
any part of the casing missing or
damaged.

7. Use a detector to localize lines
in walls with concealed electric,
water or gas lines. Avoid touching
live components or conductors.

8. Before starting to work, always
check that the chisel properly
locked in the chuck.

9. Chisel bits may be flung out
of the machine accidentally and
cause serious injury.

10. Vibrations can injure the hand­arm system. Keep exposure to
vibrations as short as possible.
When carrying out work, always
hold the hammer with both hands
and ensure that you have a stable
standing position.

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SYMBOLS

To reduce the risk of injury, user must read
instruction manual

Double insulation

Wear ear protection

Wear eye protection

Wear dust mask

This product has been marked with a
symbol relating to removing electric
and electronic waste. This means that
this product shall not be discarded with
household waste but that it shall be
returned to a collection system which
conforms to the European Directive
2002/96/CE. It will then be recycled or
dismantled in order to reduce the impact
on the environment. Electric and electronic
equipment can be hazardous for the
environment and for human health since
they contain hazardous substances.

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1. SDS-PLUS CHUCK

2. DEPTH GAUGE

3. HAMMER OR DRILLING ACTION SELECTOR SWITCH

4. GREASE BOX COVER

5. ANTI-VIBRATION HANDLE

6. ON / OFF SWITCH

7. VARIABLE SPEED CONTROL

8. AUXILIARY HANDLE

9. COMMUTATOR (See G)

10. RESIN INSULATING TIP (See G)

11. CARBON BRUSH (See G)

COMPONENT LIST

1 2

3

4

5

6

7

8

*

Not all the accessories illustrated or described are included in

standard delivery.

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TECHNICAL DATA

Voltage 220-240V~50Hz

Power input 920W

No load speed 0-720/min

Impact rate 0-3500bpm

Impact energy 6.0J

Chuck type SDS-plus

Max drilling
capacity

Steel 13mm

Masonry 32mm

Wood 40mm

Protection class

/II

Machine weight 6.3kg

NOISE INFORMATION

VIBRATION INFORMATION

Vibration total values (triax cover sum) determined according to EN 60745:

Hammer drilling into concrete

Vibration emission value

α

h,HD

=23.2m/s2

Uncertainty K=1.5m/s²

Chiselling

Vibration emission value

α

h,Cheq

=24.3m/s2

Uncertainty K=1.5m/s

2

The declared vibration total value may be used for comparing one tool with another, and
may also be used in a preliminary assessment of exposure.

A weighted sound pressure LpA: 97.4dB (A)
A weighted sound power LwA:108.4dB (A)
KpA & K

wA

=3.0dB (A)

Wear ear protection .

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WARNING: The vibration emission value during actual use of the power tool can

differ from the declared value depending on the ways in which the tool is used
dependant on the following examples and other variations on how the tool is used:
How the tool is used and the materials being drilled.
The tool being in good condition and well maintained.
The use the correct accessory for the tool and ensuring it is sharp and in good condition.
The tightness of the grip on the handles and if any anti vibration accessories are used.
And the tool is being used as intended by its design and these instructions.

This tool may cause hand-arm vibration syndrome if its use is not adequately
managed.

WARNING: To be accurate, an estimation of exposure level in the actual conditions

of use should also take account of all parts of the operating cycle such as the times
when the tool is switched off and when it is running idle but not actually doing the job. This
may significantly reduce the exposure level over the total working period.
Help to minimize your vibration exposure risk.
ALWAYS use sharp chisels, drills and blades.
Maintain this tool in accordance with these instructions and keep well lubricated (where
appropriate).
If the tool is to be used regularly then invest in anti vibration accessories.
Avoid using tools in temperatures of 10oC or less.
Plan your work schedule to spread any high vibration tool use across a number of days.

ACCESSORIES

We recommend that you purchase your accessories from the same store that
sold you the tool. Use good quality accessories marked with a well-known brand
name. Choose the type according to the work you intend to undertake. Refer to the
accessory packaging for further details. Store personnel can assist you and offer
advice.

Auxiliary handle 1
Depth stop 1

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OPERATING INSTRUCTIONS

NOTE:

Before using the tool,

read the safety and operating

manual carefully.

INTENDED USE

The machine is intended for hammer
drilling in concrete, brick and stone
as well as for light chiseling work. It is
also suitable for drilling without impact
in wood, metal, ceramic and plastic.

1. INSERTING AND
REMOVING DRILL BITS IN
THE SDS-plus CHUCK

Take care that the dust protection
cap is not damaged when
changing tools.

1) INSERTING (See A1)

Clean and lightly grease the bit with
the oil provided before inserting. Insert
the dust-free bit into the bit holder with
a twisting motion until it latches.
The bit locks itself. Check the locking
by pulling on the tool.

2) REMOVING (See A2)

Retract back the bit holder locking
sleeve (a) and pull out the bit.

WARNING:Your new WORX

Rotary Hammer Drill
generates powerful forces to
get your job done quickly and
effectively. These forces may
cause inferior quality SDS bits to
break and jam in the chuck,We
therefore recommend that only

A1

A2

a

I

II

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high quality SDS bits be used with
this tool.

2. ATTACHING AND
REMOVING THE CHUCK.
NOTE:

Ensure the Function Mode
Selection Switch (3) is not in the chisel
rotation mode ( ) or the chuck
cannot be removed.

CHUCK ICONS:

Unlock

Lock

1) REMOVING THE CHUCK
(See B1)

Firmly turn the Rotary Sheath (b) as
far as possible in the direction noted

by the unlock Icon (clockwise),then
pull the Chuck(1) off.

After removing, Clean the chuck and
spindle of any debris fragments and
apply lubrication to the chuck for

protection.

2) ATTACHING THE CHUCK
(See B2)

Firmly push the Rotary Sheath (b)
onto the spindle. Turn it in the direction
noted by the lock Icon (clockwise) ,
while pushing the chuck until you hear

a locking noise of a “click”.

WARNING!

When attaching

the Chuck make sure your

A1

A2

a

I

II

b

I

II

B1

b

I

II

B2

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fingers don’t get pinched.

After locking, the Rotary Sheath will
return to the initial position. Pull on the
chuck to make sure it has properly
locked itself into place before drilling.

3. ADJUSTING THE
AUXILIARY HANDLE (See C)

For your personal safety we
recommend using the auxiliary handle
at all times.
To adjust the handle, rotate the
bottom of the handle anti-clockwise
and rotate the handle around the
hammer collar until the handle is in
the desired position. Tighten fully.

4. ANTI-VIBRATION HANDLE

The Anti-vibration handle reduces
the vibration, making operation more
comfortable and secure.

5. USING THE DEPTH
GAUGE (See C)

The depth gauge can be used to set a
constant depth to the drill.
Rotate the locking screw (a) anti­clockwise to loosen, insert the depth
gauge into the handle. Adjust it to the
desired depth. Rotate the locking screw
clockwise to tighten.

6. ON/OFF SWITCH (See D)

Depress the On/Off switch (6) to start
and release it to stop your tool.

D

6

C

a

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6. VARIABLE SPEED
CONTROL SWITCH

The variable speed selector (7) allows
you to vary the speed of the rotary
hammer enabling the optimum speed
to be selected for various uses and to
avoid the workpiece being burnt, this
can occur especially when drilling.
The speed increases as you turn the
switch right and decreases as you
turn it left (1 being slowest and 6
fastest).

7. FUNCTION MODE
SELECTION (See E)

The operation of the gearbox for each
application is set with the function
mode selection switch (3). To change
between functions, depress the
unlocking button (b) and rotate the
selector to the desired operating
mode.

For simultaneous
drilling and
impacting of
concrete or
masonry, choose
the Hammer
drilling position..

For adjustment
flat chisel to
suitable position.

D

6

E

b 3

C

a

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For drilling into
steel, wood and
plastics choose
the Rotary drilling
position.

For impacting only

- for light chipping,
chiseling and
demolition
applications
choose the
Hammer position.

WARNING: Wait until the

tool has stopped before
operating the Function Mode
Selection Switch.

8. MACHINE LUBRICATION
(See F)

The machine is grease-lubricated.
A grease (not supplied) refill is
only required during hammer work
efficiency is low. Open the grease box
lid at the top of the hammer using a
proper tool (not supplied). Then refill
approx 30g grease(not supplied).
The grease specification is general
purpose lithium based.

Caution: Keep the container of

grease away from children.

9. SAFETY CLUTCH
PROTECTION

This tool will generate high forces
when is use. Always hold the tool
firmly with both hands and provide for
a secure body position.

D

6

E

b 3

a

F

4

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If the drill bit or chisel becomes
jammed in the workpiece, the clutch
will activate stopping the tool spindle.
This is normal. Switch the machine
off, loosen and remove the drill bit or
chisel from the work piece.

CAUTION

Switching the machine on with
the drill bit or chisel jammed in the
work piece will generate high reaction
torque and can result in injury to end
user.

10. AUTO-STOP CARBON
BRUSHES(See G))

When the resin insulating tip (10)
inside the carbon brush (11) is
exposed to contact the commutator
(9), it will automatically shut off the
motor. After prolonged use the carbon
brushes will wear. This machine is
fitted with Auto Stop Carbon Brushes
that will automatically shut down the
motor when the brushes become
worn. When this occurs, both carbon
brushes should be replaced. Keep the
carbon brushes clean and free to slip
in the holders. Both carbon brushes
should be replaced at the same time.
Use only identical carbon brushes.

11. TO REPLACE THE
BRUSHES (See H1,H2)

Disconnect the plug from the power
supply.
Unscrew the carbon brush cap(c) with
screwdriver.

c

H2

11

G

9

10

11

F

4

H1

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Remove the carbon brush. Check the
length of the brush (11) and replace
if under 6mm. When brushes need
replacement always renew both
brushes, even if one is still more than
6mm long.
Completely screw down the carbon
brush cap. Check that the tool is
working. Before use, allow it run for a
few minutes to enable the brushes to
settle.

WORKING HINTS
FOR YOUR ROTARY
HAMMER DRILL

1. Reduce the pressure on the
drill bit when it is about to break
through. This will prevent the drill
from jamming.

2. When drilling a large hole, first
drill a pilot hole using a smaller
drill bit.

3. Always apply pressure to your
drill bit in a straight line, and if
possible at right angles to the
workpiece.

4. Never change the operating
mode whilst the drill is running.

5. Do not apply excessive pressure
to the tool when chiseling.
Excessive force does not speed
up the work.

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MAINTENANCE

Remove the plug from the socket before carrying out any adjustment, servicing
or maintenance.

There are no user serviceable parts in your power tool. Never use water or chemical
cleaners to clean your power tool. Wipe clean with a dry cloth. Always store your power
tool in a dry place. Keep the motor ventilation slots clean. Keep all working controls
free of dust. Occasionally you may see sparks through the ventilation slots. This is
normal and will not damage your power tool.
If the supply cord is damaged, it must be replaced by the manufacturer, its service
agent or similarly qualified persons in order to avoid a hazard.

TROUBLESHOOTING

1. If your power tool does not start, check the plug on the power supply first.

2. If your hammer becomes too hot in use, set the hammer switch to the drill mode
and allow your drill to operate at maximum speed without load for 2 minutes.

3. If your hammer work efficiency is too low, please add sufficient grease in the grease box.

4. If your hammer work efficiency is too low please check drill bit or chisel and make
sure it is not blunt or worn.

5. If a fault can not be rectified, return the tool to an authorized dealer for repair.

ENVIRONMENTAL PROTECTION

Waste electrical products must not be disposed of with household waste.
Please recycle where facilities exist. Check with your local authorities or retailer

for recycling advice.

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WARRANTY STATEMENT

A product of hard work

In every corner of the world you'll find a JCB machine. Since our beginnings in
1945, we have always invested heavily in research and development, keeping JCB
at the cutting edge of innovation. Today, JCB has some of the finest engineering
facilities across the globe, producing a range of over 300 machines and maintains a
reputation for unrivaled customer service. The same innovation to always get the job
done better, the same quality to never let you down, the same engineering heritage
and expertise that you can trust, can be found in JCB Power Tools.
JCB power tools are guaranteed against manufacturing defects for a period of 3
years from the date of purchase.
If your JCB power tool becomes defective within this warranty period, we guarantee
to:

• Replace or repair all defective parts, free of charge, or

• Repair products free of charge, or

• Replace the unit with a new or re-conditioned unit, free of charge.

Conditions

Your 3 year guarantee does not cover defects caused by or resulting from:

• overload, misuse, or neglect

• normal wear and tear, including accessory wear

• hire use

• repairs attempted by anyone other than an authorised agent

• damage caused by foreign objects, substances or accidents
Your 3 year guarantee does not cover:

• battery packs as they are guaranteed for a 12 month period

• accessories supplied with the power tool.

Warranty claims

For guarantee claims, please contact JCB Customer Services. You will be required to
submit proof of purchase.

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Terms

This guarantee does not affect your statutory rights. JCB SO53 3LE (Registered in
England under No. 973387).

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EC DECLARATION OF CONFORMITY

We,

Positec Power Tools (Europe) Ltd, PO Box 152,

Leeds, LS10 9DS, UK

Declare that the product

Description

JCB SDS Plus Hammer

Type

(JCB-SDS920)

Function

Hammering various materials

Complies with the following Directives,

EC Machinery Directive

2006/42/EC

EC Electromagnetic Compatibility Directive

2004/108/EC

RoHS Directive

2011/65/EU

Standards conform to

EN 60745-1

EN 60745-2-1

EN 55014-1

EN 55014-2
EN 61000-3-2
EN 61000-3-3

The person authorised to compile the technical file,

Name: Russell Nicholson

Address: Positec Power Tools (Europe) Ltd,

PO Box 152, Leeds, LS10 9DS, UK

2014/11/25

Allen Ding

Deputy Chief Engineer,Testing & Certification