Clarke CBG 8W, 6500112 User guide

8”WETSTONE BENCH GRINDER

MODEL NO: CBG8W

PART NO: 6500112

OPERATING & MAINTENANCE

INSTRUCTIONS

ORIGINAL INSTRUCTIONS GC1020 - rev 4

INTRODUCTION

Thank you for purchasing this CLARKE Bench Grinder.

Before attempting to use this product, please read this manual thoroughly and
follow the instructions carefully. In doing so you will ensure the safety of yourself
and that of others around you, and you can look forward to your purchase
giving you long and satisfactory service.

GUARANTEE

This product is guaranteed against faulty manufacture for a period of 12
months from the date of purchase. Please keep your receipt which will be
required as proof of purchase.

This guarantee is invalid if the product is found to have been abused or
tampered with in any way, or not used for the purpose for which it was
intended.

Faulty goods should be returned to their place of purchase, no product can
be returned to us without prior permission.

This guarantee does not effect your statutory rights.

ENVIRONMENTAL PROTECTION

Do not dispose of this product with general household waste. All
tools, accessories and packaging should be sorted, taken to a
recycling centre and disposed of according to the laws governing
Waste Electrical and Electronic Equipment.

Through the purchase of this product, the customer is taking on the obligation
to deal with the WEEE in accordance with the WEEE regulations in relation to
the treatment, recycling & recovery and environmentally sound disposal of
the WEEE.

In effect, this means that this product must not be disposed of with general
household waste. It must be disposed of according to the laws governing
Waste Electrical and Electronic Equipment (WEEE) at a recognised disposal
facility.

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GENERAL SAFETY RULES

CAUTION: FAILURE TO FOLLOW THESE PRECAUTIONS COULD RESULT IN
PERSONAL INJURY, AND/OR DAMAGE TO PROPERTY.

WORK ENVIRONMENT

1. Keep the work area clean, tidy and well lit. Cluttered and dark areas invite
accidents

2. 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.

3. Keep children and bystanders away while operating a power tool.
Distractions can cause you to lose control.

PERSONAL SAFETY

1. 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 operating power tools may result in personal injury.

2. Avoid accidental starting. Ensure the switch is in the off position before
plugging in. Plugging in power tools that have the switch on invites
accidents.

3. Do not overreach. Keep proper footing and balance at all times. This
enables better control of the power tool in unexpected situations.

4. 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.

5. Gloves, manufactured to the current European safety standards should be
worn when operating grinding equipment.

6. Eye protection manufactured to the current European safety standards
should be worn when operating grinding equipment. Eye protectors must
provide protection from flying particles from the front and the side.

GENERAL USE AND CARE OF POWER TOOLS

1. ALWAYS check for any damage or condition that could affect the
grinder’s operation. Any damaged part should be properly repaired.

2. NEVER use the grinder if it is defective or operating abnormally.

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3. NEVER abuse the mains cable. Never yank the cable to disconnect it from
the socket. Keep the cable away from sharp edges/hot surfaces.

4. NEVER carry out any alterations or modifications to this product.

5. NEVER wipe the sharpener clean with solvents. Wipe plastic parts with a
soft cloth, slightly dampened with soapy water.

6. NEVER attempt any repairs yourself. If you have a problem with this product
contact your local CLARKE dealer.

7. Do not use the tool for any purpose than that described in this manual.

8. Always maintain the tool with care. Keep it clean for the best and safest
performance.

9. 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 which it was designed.

10. 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.

11. Store idle 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.

12. Maintain power tools. Check for misalignment or binding of moving parts,
breakage of parts and any other condition that may affect the power
tools operation. If damaged, have the power tool repaired before use.
Many accidents are caused by poorly maintained power tools.

13. Use the power tool and accessories in accordance with these instructions
and in the manner intended for the particular type of power tool, taking
into account the working conditions and the work to be performed. Use of
the power tool for operations different from intended could result in a
hazardous situation.

ELECTRICAL SAFETY

1. Power tool plugs must match the outlet. Never modify the plug in any way.
Do not use adapter plugs with earthed (grounded) power tools. Correct
plugs and matching outlets will reduce the risk of electric shock.

2. Do not abuse the cable. Never use it for carrying, pulling or unplugging the
power tool. Keep the cable away from heat, oil, sharp edges or moving
parts. Damaged or entangled cables increase the risk of electric shock.

3. Do not expose power tools to rain or wet conditions. Water entering a
power tool will increase the risk of electric shock. If operating the power
tool in a damp location is unavoidable, use a residual current device
(RCD) protected supply.

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4. When operating a power tool outdoors, use an extension cable suitable for
outdoor use. Use of a cable suitable for outdoor use reduces the risk of
electric shock.

GRINDING STONE SAFETY

1. Check the speed of the grindstone before fitting to your grinder. Never use
a stone with a rpm speed less than the rpm speed of your grinder. See
specification.

2. The outside diameter and thickness of your accessories must be within the
capacity rating of the power tool. The correct size accessories can be
correctly guarded and controlled.

3. Never use a stone that is chipped, cracked or damaged. Fragments from
a broken or damaged grinding stone can cause serious injury. Make sure
that defective stones are destroyed and not used.

4. Bonded abrasive products are breakable and shall therefore be handled
with utmost care. The use of damaged or improperly mounted or used
abrasive products is dangerous and can cause serious injuries.

5. Always refer to the label for specified usage and observe the safety
information. Do not use for purposes other than specified.

6. Always use the correct stone for it’s intended task. Using the incorrect stone
can cause serious injury.

7. Allow the stone and tool to do the work. Never force the workpiece
against the stone as this could cause kickback and/or shatter the stone
causing serious injury.

8. Do not use separate reducing bushes or adapters to adapt large hole
abrasive wheels. Do not force a stone onto a machine or alter the size of
the arbor hole.

9. Never use a damaged grinding stone. Inspect the stone before each use
for chips, cracks or excess wear. If the tool or accessory is dropped, inspect
for damage or install a new accessory. After fitting the accessory, position
yourself away from the plane of the rotating accessory and run the tool at
full speed. damaged stones may break apart during this test.

10. Abrasive products shall be handled and transported with care. Abrasive
products shall be stored in such a manner that they are not subjected to
mechanical damage and harmful environmental influences.

BENCH GRINDER SAFETY WARNINGS

1. Hold a hand tool or blade being sharpened firmly to prevent loss of control.

2. Never install a abrasive flap wheel or sanding disc on this grinder.

3. Always replace a cracked grinding wheel immediately.

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4. Never use damaged or incorrect grindstones. The stone and retaining
fixtures were specially designed for your grinder, for optimum performance
and safety of operation. Inspect the condition of the grinding stone before
use and do not use if any damage is found.

5. Always use the tool rests to steady the workpiece, the torque of the
spinning grinding wheel may pull the workpiece from your hands.

6. ALWAYS check for damaged parts. Before further use any part that is
damaged should be carefully checked to determine if it would operate
properly and perform its intended function. Check for misalignment or
binding of moving parts, breakage of parts and any other condition that
may affect the tool's operation. A part that is damaged should be properly
repaired or replaced at an authorised service center. Following this rule will
reduce the risk of electric shock, fire or serious injury.

NOTE: Bench grinders used in industrial environments may be subject to

the requirements of The Provision and Use of Work Equipment
regulations 1992 (particularly regarding the training requirement
of The Abrasive Wheels Regulations 1970), or other legislation. If in
doubt seek advice.

Please keep these instructions in a safe place for future reference.

SAFETY SYMBOLS

The meanings of the markings and symbols on the product are shown below

Read this manual
before use and keep
in a safe place for
future reference

Gloves should be
worn when grinding.

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Wear eye protection
when using this tool.

Wear dust mask.

ELECTRICAL CONNECTIONS

Plug must be BS1363/A approved.

Always fit a 13 Amp fuse.

Ensure that the outer sheath of the cable is firmly held by the clamp

Neutral

(Blue)

Live

(Brown)

Earth

(Green and Yellow)

WARNING! READ THESE ELECTRICAL SAFETY INSTRUCTIONS
THOROUGHLY BEFORE CONNECTING THE PRODUCT TO THE
MAINS SUPPLY.

Before switching the product on, make sure that the voltage of your electricity supply is
the same as that indicated on the rating plate. This product is designed to operate on
230VAC 50Hz. Connecting it to any other power source may cause damage.

This product may be fitted with a non-rewireable plug. If it is necessary to change the
fuse in the plug, the fuse cover must be refitted. If the fuse cover becomes lost or
damaged, the plug must not be used until a suitable replacement is obtained.

If the plug has to be changed because it is not suitable for your socket, or due to
damage, it should be cut off and a replacement fitted, following the wiring instructions
shown below. The old plug must be disposed of safely, as insertion into a mains socket
could cause an electrical hazard.

WARNING! THE WIRES IN THE POWER CABLE OF THIS PRODUCT
ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE:
BLUE = NEUTRAL BROWN = LIVE YELLOW AND GREEN =
EARTH

If the colours of the wires in the power cable of this product do not correspond with the
markings on the terminals of your plug, proceed as follows.

•The Blue wire must be connected to the terminal marked N or coloured Black.

•The Brown wire must be connected to the terminal marked L or coloured Red.

•The Yellow and Green wire must be connected to the terminal marked E or

or coloured Green.

We strongly recommend that this machine is connected to the mains supply via a
Residual Current Device (RCD). If in any doubt, consult a qualified electrician. DO NOT
attempt any repairs yourself.

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OVERVIEW

No Description No Description

1 Grinding Wheel Trough 5 Tool/Work Rest

2 Wet Grinding Stone 6 On/Off Switch

3 Eyeshield 7 Bench Mounting Holes

4 Dry Grinding Wheel 8 Motor Housing

The items above should be supplied with the grinder. If any items are missing or
damaged, please contact the Clarke dealer where you purchased the
product.

Position the machine in good light and fixed to a suitable workbench using the
boltholes in the machine base.

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ASSEMBLY & INSTALLATION

1. Fix the grinder to the bench using
suitable screws or bolts through
the holes In the grinder base. Do
not overtighten the securing
screws.

2. The grinder has rubber mounting
feet to help minimise vibration,
and these will not be effective if
compressed too tightly. If using
bolts, make sure they will not work
loose under vibration by fitting
locknuts.

3. Fit the guard visor as shown in the illustration. Position the visor mounting
bracket to within 1.5mm (1/16") of the wheel.

4. Fit the work rest as shown in the illustration, positioning it to within 1.5mm (1/
16") of the wheel. This will help to prevent the workpiece being dragged
between the wheel and the work rest.

5. Rotate the wheel by hand to make sure the visor mounting bracket and
work rest are clear of the wheel.

6. Any fault which might lead to fracture in a new grinding wheel is likely to
show in its first minute of operation. Switch the grinder on, stand clear, and
allow the grinder to run for a minute or so before using it for the first time.

USING YOUR GRINDER

WARNING: FRAGMENTS FROM A BROKEN/DETACHED GRINDING WHEEL
CAN CAUSE INJURY.

WARNING: THE STONE WILL CONTINUE TO ROTATE BRIEFLY AFTER THE OFF
SWITCH HAS BEEN PRESSED.

WARNING: WARNING: APPLYIING EXCESSIVE FORCE TO THE GRINDING
WHEEL CAN BE DANGEROUS AND COULD CAUSE DAMAGE TO THE
MACHINE. NEVER ATTEMPT TO USE THE SIDE OF THE GRINDING WHEEL.

1. Switch on and allow the grinder to reach full speed, then hold the tool
firmly on the tool rest and apply slight pressure on to the grinding wheel,
allowing the grinder to do the work.

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NOTE: Never attempt to grind a piece of metal that is thinner than the

gap between the tool rest and the grinding wheel.

2. Press the tool blade evenly onto the grinding stone and move the tool
sideways across the stone. Make sure that at least half the width of the tool
cutting edge comes into contact with the grinding stone at any time to
avoid damage to the stone.

MAINTENANCE

GENERAL MAINTENANCE

Make sure that all components are tight and secure. Always have any
damaged or worn parts repaired or replaced by qualified service personnel.
Do not attempt to repair the grinder unless you are qualified to do so.

The drive motor and bearings are sealed units and require no regular
maintenance. Should you require assistance, contact your local Clarke
service agent.

The stone will wear down with use and may well go out of true. Use a dressing
wheel or stone grader to correct the trueness and to remove worn, glazed
grains from the stone.

The stone will have a finite life expectancy, dependant upon the nature of the
work being done. Periodically, make a note of the wheel diameter and
replace your 150mm dia wheel if it reduces to an little as 130mm in diameter.

INSTALLING A NEW GRINDING WHEEL

WARNING: NEVER RE-START THE GRINDER WITHOUT THE GUARDS
INSTALLED.

Use only correct replacement wheels of a suitable grade for your intended
use. Check that the spindle speed (no-load speed) marked on the machine
does not exceed the maximum rpm marked on the grinding wheel. Consult
your dealer if in doubt about choosing the correct replacement wheel.

Check replacement wheels thoroughly for any signs of damage before fitting.
Replacement wheels must fit easily, but not loosely, on to the machine spindle.
Do not attempt to fit a wheel that is tight on the spindle. There is a danger of a
tight fitting wheel bursting in use if the spindle expands due to becoming hot.

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TO REPLACE THE DRY GRINDING WHEEL

Remove the wheel guard and guard visor (three nuts and bolts). Unscrew the
wheel retaining nut (normal right hand thread), and remove the flange,
blotter, and used wheel. Reassemble as shown in the diagram.

Refit the wheel guard and guard visor (three nuts and bolts) before starting the
grinder.

TO REPLACE THE WET STONE WHEEL

Drain the water trough by removing the plug in the bottom. Remove the water
bath (three screws). Unscrew the wheel retaining nut (normal right hand
thread), flange, and used wheel. Reassemble as shown in the diagram.

Do not overtighten the wheel retaining nut when reassembling - hand pressure
with a standard spanner is sufficient. There is a danger of damaging the wheel
if the nut Is overtightened.

Refit the wheel guard and guard visor (three nuts and bolts) before starting the
grinder.

Switch the grinder on, stand clear, and allow the grinder to run for a minute or
so before using a new wheel for the first time.

DRESSING A NEW STONE

New grinding stones are frequently not true or in time can become grooved,
glazed (built-up), out of round or otherwise mis-shapen. To correct these
defects, a grinding stone dresser is available from your Clarke dealer.

• ET125 Grinding Wheel Dresser - Part No:1700225

• Replacement Dresser Wheel - Part No:1700230

• ET154 ½ Carat Diamond Tip Wheel Dresser - part No:1700329

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1. If the grinding stone is new, allow it to spin for a minute with no load. Check
that it is spinning straight and true. If not, it will require dressing before use.

2. Stand to the side of the stone and hold the dresser handle firmly. Place the
dresser on the tool support so that its wheels can move freely (i.e, the
exposed part of the wheel should be facing up). Run the stone and apply
the dresser to the surface of the stone.

CLEANING & STORAGE

Clean the exterior the machine if required using a mild detergent or mild
solvent. Never immerse the machine in water. To reduce any fire hazard, keep
any cooling vents in the grinder free of debris.

If not bolted to a workbench, store the grinder in a clean, dry location, out of
reach of children.

ACCESSORIES

Description Part No

150mm Dry Grinding Wheel - Fine 6501043

150mm Dry Grinding Wheel -Medium 6501044

150mm Dry Grinding Wheel -Coarse 6501045

SPECIFICATIONS

Feature Value

Weight 11 kg

Grinding Stone Dimensions (Dry Wheel) 150 dia x 21 mm (12.7 mm bore)

Grinding Stone Dimensions (Wet Wheel) 200 dia x 40mm (20mm bore)

Rated Voltage / Frequency 230 V / 50 Hz

Motor Wattage 275 W

No Load Speed 135/2900 rpm

Duty Cycle Classification 10 minutes on/10 minutes off

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DECLARATION OF CONFORMITY

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COMPONENT PARTS DIAGRAM

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COMPONENT PARTS LIST

No Description No Description

1 Screw 24 Switch Cover

2 Washer 25 Sealing Plate

Cover 26 Earth Connection

3

4 Water Trough 27 Cable Adaptor

5 Rubber Bung 28

6 Pin 29 Cable Washer

7 Worm Wheel 30 Cable Nut

8Worm Gear 31Power Cable

9 Bolt 32 Centre Main Body

10 Spindle

11 Bearing 34

12 Worm Gear Casing 35 Inner Cover

Penny Washer 36 Hand Knob

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14 Wheel Retaining Disc 37 Tool Rest

15 Grinding Wheel 38 Square Neck Screw

16 Nut 39 Wheel Disc

Left Main Body 40 Grinding Wheel

17

Cable Protector 41 Outer Cover

18

19 Capacitor

20 Connector

21 Base

22 Rubber Foot

23 Switch

Rotor

33 Stator

Right Main Body

42 Bolt

43 Eyeshield

44 Eyeshield Bracket

45 Spring Washer

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