DeWalt DW756, DW758 User Manual

INSTRUCTION MANUAL
GUIDE D'UTILISATION
MANUAL DE INSTRUCCIONES

DW756 - 6” Heavy Duty Bench Grinder /DW758 - 8” Heavy Duty Bench Grinder
DW756 - Meuleuse d'établi de 152 mm (6 po) de service intensif /DW758 - Meuleuse d'établi de 200 mm
(8 po) de service intensif
DW756 - Esmeriladora de banco de 152 mm (6")/DW758-Esmeriladora de banco de 200 mm (8") para
trabajo pesado

INSTRUCTIVO DE OPERACIÓN, CENTROS DE SERVICIO Y PÓLIZA
DE GARANTÍA. ADVERTENCIA: LÉASE ESTE INSTRUCTIVO ANTES
DE USAR EL PRODUCTO.

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Safety Instructions For All Tools

• KEEP WORK AREA CLEAN. Cluttered areas and benches invite
injuries.

• CONSIDER WORK AREA ENVIRONMENT. Don’t expose power
tools to rain. Don’t use power tools in damp or wet locations. Keep
work area well lit. Do not use tool in presence of flammable liquids
or gases.

• GUARD AGAINST ELECTRIC SHOCK. Prevent body contact
with grounded surfaces. For example; pipes, radiators, ranges, and
refrigerator enclosures.

• KEEP CHILDREN AWAY. Do not let visitors contact tool or
extension cord. All visitors should be kept away from work area.

• STORE IDLE TOOLS. When not in use, tools should be stored in
dry, and high or locked-up place — out of reach of children.

• DON’T FORCE TOOL. It will do the job better and safer at the
rate for which it was intended.

• USE RIGHT TOOL. Don’t force small tool or attachment to do the
job of a heavy-duty tool. Don’t use tool for purpose not intended.

• DRESS PROPERLY. Do not wear loose clothing or jewelry. They
can be caught in moving parts. Rubber gloves and non-skid
footwear are recommended when working outdoors. Wear
protective hair covering to contain long hair.

• USE SAFETY GLASSES. Also use face or dust mask if operation
is dusty.

• DON’T ABUSE CORD. Never carry tool by cord or yank it to
disconnect from receptacle. Keep cord from heat, oil, and sharp
edges.

• SECURE WORK. Use clamps or a vise to hold work. It’s safer than
using your hand and it frees both hands to operate tool.

• DON’T OVERREACH. Keep proper footing and balance at all
times.

• MAINTAIN TOOLS WITH CARE. Keep tools sharp and clean for
better and safer performance. Follow instructions for lubricating

Important Safety Instructions

WARNING: When using electric tools, basic safety precautions
should always be followed to reduce risk of fire, electric shock, and
personal injury, including the following:

READ ALL INSTRUCTIONS

Grounding Instructions

This tool should be grounded while in use to protect the operator from
electric shock. The tool is equipped with a 3-conductor cord and 3­prong grounding type plug to fit the proper grounding type receptacle.
The green (or green and yellow) conductor in the cord is the
grounding wire. Never connect the green (or green and yellow) wire
to a live terminal. If your unit is intended for use on less than 150 V,
it has a plug that looks like that shown in sketch A. If it is for use on
150 to 250 V, it has a plug that looks like that shown in sketch D. An
adapter, sketches B and C, is available for connecting sketch A type
plugs to 2-prong receptacles. The green-colored rigid ear, lug, or the
like, extending from the adapter must be connected to a permanent
ground, such as a properly grounded outlet box. No adapter is
available for a plug as shown in sketch D. ADAPTER SHOWN IN
FIGURES B and C IS NOT FOR USE IN CANADA.

English

IF YOU HAVE ANY QUESTIONS OR COMMENTS ABOUT THIS
OR ANY D

EWALT TOOL, CALL US TOLL FREE AT:

1-800-4-DEWALT (1-800-433-9258)

AB CD

GROUNDING PIN

GROUNDED

OUTLET

BOX

GROUNDING

MEANS

GROUNDING PIN

ADAPTER

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and changing accessories. Inspect tool cords periodically and if
damaged, have repaired by authorized service facility. Inspect
extension cords periodically and replace if damaged. Keep
handles dry, clean, and free from oil and grease.

• DISCONNECT OR LOCK OFF TOOLS when not in use, before

servicing, and when changing accessories, such as blades, bits,
cutters.

• REMOVE ADJUSTING KEYS AND WRENCHES. Form habit of

checking to see that keys and adjusting wrenches are removed
from tool before turning it on.

• AVOID UNINTENTIONAL STARTING. Don’t carry tool with finger

on switch. Be sure switch is off when plugging in.

• EXTENSION CORDS. Use only 3-wire extension cords that have

3-prong grounding-type plugs and 3-pole receptacles that accept
the tool’s plug. Replace or repair damaged cords. Make sure your
extension cord is in good condition. When using an extension cord,
be sure to use one heavy enough to carry the current your product
will draw. An undersized cord will cause a drop in line voltage
resulting in loss of power and overheating. The following table
shows the correct size to use depending on cord length and
nameplate ampere rating. If in doubt, use the next heavier gage.
The smaller the gage number, the heavier the cord.

Minimum Gage for Cord Sets

Volts Total Length of Cord in Feet

120V 0-25 26-50 51-100 101-150
240V 0-50 51-100 101-200 201-300

Ampere Rating

More Not more AWG

Than Than
0-6 18161614
6 - 10 18 16 14 12
10-1216161412
12 - 16 14 12 Not Recommended

• OUTDOOR USE EXTENSION CORDS. When tool is used
outdoors, use only extension cords intended for use outdoors and
so marked.

1

English

• STAY ALERT. Watch what you are doing. Use common sense.
Do not operate tool when you are tired.

• CHECK DAMAGED PARTS. Before further use of the tool, a
guard or other part that is damaged should be carefully checked
to determine that it will operate properly and perform its intended
function. Check for alignment of moving parts, binding of moving
parts, breakage of parts, mounting, and any other conditions that
may affect its operation. A guard or other part that is damaged
should be properly repaired or replaced by an authorized service
center unless otherwise indicated elsewhere in this instruction
manual. Have defective switches replaced by authorized service
center. Do not use tool if switch does not turn it on and off.

Additional Safety Instructions for
Grinders

• ALWAYS USE GUARDS AND EYE SHIELDS. WHEN GRIN­DING, ALWAYS KEEP GUARDS IN PLACE.

• Use only grinding wheels having a maximum operating speed at
least high as “No Load RPM” marked on the tool’s nameplate.

• Before using, inspect recommended accessory for cracks or flaws.
If such a crack or flaw is evident, discard the accessory. DO NOT
USE A GRINDING WHEEL THAT IS CRACKED OR FLAWED IN
ANY WAY.

• When starting the tool, let it run for one minute. Never start the
tool with a person in line with the wheel. This includes the operator.

• Do not grind on the sides of grinding wheels unless they are
specifically designed for that purpose.

• Do not overtighten wheel clamp nut. This may crack the grinding
wheel.

• Clean the cavity around the grinding wheel periodically.

• CAUTION: Some wood contains preservatives such as copper
chromium arsenate (CCA) which can be toxic. When sanding
these materials extra care should be taken to avoid inhalation and
minimize skin contact.

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Installing Spark Guards and Eye Shield
Brackets

TURN OFF TOOL AND DISCONNECT FROM POWER SUPPLY
The combination spark guard and eye shield brackets are assembled

and in a plastic bag. They are identified L for left and R for right. Refer
to Figure 3 to install them to the bench grinder using the two screws
in the wheel guard (in some cases these screws will be in the plastic
bag). Adjust the edge of the spark guard to within 1/16” of the
grinding wheel or other accessory as shown in the figure. Tighten the
two screws securely.

2

SAVE THESE INSTRUCTIONS

Motor

Be sure your power supply agrees with the nameplate marking. 120
Volts, 50/60 Hz means alternating current only should be used to
operate this tool.A power decrease of more than 10% will cause loss
of power and overheating. All DeWalt tools are factory tested; if this
tool does not operate, check the power supply

Bench Mounting

1. The grinder should be unplugged.

2. Remove the drilling template from this manual (pg. 5) and place it
in position of the bench. Check for the availability of power for the
grinder. Tape the template to the bench.

3. Using a center punch, transfer the hole centers for drilling.

4. Drill appropriate sized holes.

5. Insert 1/4” (6mm) Hex head bolts through washers and the holes.
You may want to use washers on the underside of the bench as
well.

6. Tighten the nuts. Do not overtighten. Allow the rubber feet to
absorb the vibration when the grinder is running.

Installing Tool Rests

TURN OFF POWER AND DISCONNECT FROM POWER SUPPLY.
Your grinder includes a hex wrench, attached to the right of the

On/Off switch. Use this wrench when installing the tool rest brackets,
tool rest and eye shield brackets.

First install the tool rest brackets, as shown in Fig. 2. Next attach the
tool rests. Use the bolts, washers, spacers and lock nuts from the
plastic bag to secure the brackets and tool rests in place.

NOTE: There is a left and right tool rest. When in actual use, the tool
rests should be adjusted to within 1/8” of the grinding wheel or other
accessory being used.

English

FIG. 1

SWITCH (ON - OFF)

EYE SHIELD BRACKETS

SPARK GUARDS

TOOL RESTS

COARSE

GRINDING

WHEEL

(36 GRIT)

MEDIUM

GRINDING

WHEEL

(60 GRIT)

EYE SHIELDS

DW756 - 6” Bench Grinder 1/2”(13mm) Arbor, 3450 RPM
DW758 - 8” Heavy Duty Bench Grinder 5/8”(16mm) Arbor, 3600 RPM

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English

Installing Eye Shields

TURN OFF TOOL AND DISCONNECT FROM POWER SUPPLY.
Remove the steel strip from the top surface of each eye shield by

removing the two screws. Install the shields, (they are identical and
will fit either side) to the brackets, as shown in Fig. 4. Tighten screws
securely. Adjust eye shields so they are between the wheels and your
eyes.

EYE SHIELDS ARE NOT DESIGNED TO REPLACE SAFETY
GLASSES.

Tighten the shields in place by tightening the plastic knob in the
bracket assembly. Remove protective paper cover.

Operation

NEVER USE A BENCH GRINDER IF IT IS NOT FIRMLY
FASTENED TO A WORK BENCH OR RIGID FRAME. Before turning
the grinder on, put on safety glasses. Turn on the grinder and allow
it to reach full speed (3450 RPM - DW756, 3600 RPM - DW758).
Hold the workpiece firmly and against the tool rest. Hold very small
pieces with pliers or other suitable clamps. Feed the work smoothly
and evenly into the grinding wheel. Move the work slowly and avoid
jamming the work against the wheel. As the wheel tends to slow
down you should occasionally release the pressure to let the wheel
return to full speed.

Grind only on the face of the grinding wheel and never on the side.
(Some wheels are designed for side grinding and will say so on their
instruction sheets).

CAUTION: Prolonged grinding will cause most materials to

become hot. Handle them with pliers or thick gloves.

Switch

The switch is located on the front of the grinder, on the base. (Figure

1) To turn the tool on depress the side of the rocker switch on the left
side, marked “ON”. To turn off the grinder, depress the right side of
the rocker switch, marked “OFF”.

FIG. 2

FIG. 3

BOLT

LOCK WASHER

TOOL REST

BOLT

LOCK WASHER

EYE SHIELD

BRACKET

SPARK

GUARD

FIG. 4

SCREWS

EYE

SHIELD

STEEL

STRIP

LOCK NUTS

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4

English

Installing Tool Rests

TURN OFF AND UNPLUG THE BENCH GRINDER

Remove the tool rests from the packing and install as shown in
Figure 2. Use the washers and screws supplied.

CAUTION: Longer screws may interfere with the movement of the

grinding wheel.

Maintenance

CLEANING

Blowing dust and grit out of the motor housing using compressed air
is a necessary regular maintenance procedure. Dust and grit
containing metal particles often accumulate on interior surfaces and
could create an electrical shock hazard if not frequently cleaned out.
ALWAYS WEAR SAFETY GLASSES.

CAUTION: Never use solvents or other harsh chemicals for

cleaning the non-metallic parts of the tool. Use clean, dry rag only.

LUBRICATION

DeWAL T tools are properly lubricated at the factory and are ready for
use. Tools should be relubricated regularly every sixty days to six
months, depending on usage. (Tools used constantly on production
or heavy-duty jobs and tools exposed to heat may require more
frequent lubrication.) This lubrication should only be attempted by
trained power tool repair persons, such as those at DeWALT service
centers or in other qualified service organizations.

Accessories

Recommended accessories for use with your tool are available at
extra cost from your distributor or local service center.

Grinding wheels must fit within the confines of the guard and must be
rated higher than the recommended speed as marked on the
nameplate.

Recommended accessories for use with your tool are available at
extra cost from your distributor or local service center.

CAUTION: Strands of wire cup brushes may break and fly off
while in use. Users and others in the area should wear adequate eye,
face and body protection. Use only wire cup brushes that are rated at
or greater than the RPM shown on the tool’s nameplate.

WARNING: T o reduce the risk of injury , always use proper guards
when grinding and wear eye protection.

CAUTION: The use of any non-recommended accessory may
be hazardous.

Changing Accessories

TURN OFF THE TOOL AND DISCONNECT FROM POWER
SUPPLY.

CHANGE ACCESSORIES WHEN THE SPARK GUARD CAN NO
LONGER BE ADJUSTED TO 1/16” FROM THE WHEEL.

DW756 - USE ONLY WHEELS THAT MEASURE 6” IN DIAMETER.
THIS TOOL HAS 1/2” ARBORS ON EACH SIDE.

DW758 - USE ONLY WHEELS THAT MEASURE 8” IN DIAMETER.
THIS TOOL HAS 5/8” ARBORS ON EACH SIDE.

Follow the steps below to remove and replace an accessory.

1. Raise the eye shield.

2. Loosen and pull the tool rest out as far as possible. Do no remove it.

3. Loosen and pull the spark guard out as far as possible, Do not

remove it.

4. Remove the screws from the side cover and remove cover .

5. Using hex or adjustable wrenches, grasp the two hex nuts holding

the wheels to the arbor shaft at each end of the tool. To remove the
wheel from the left turn the hex nut clockwise while holding the other
stationary.

6. Remove the wheel washer and the wheel.

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5

English

FRONT

DEVANT
FRENTE

2 13/16”

68mm

6”

152mm

1/4” (7 mm) Hole DW756 - 3/8” (12,4mm) DW758

Trou de 7mm (1/4 po) DW756, 12,4 mm (3/8 po) DW758

NEVER ATTEMPT TO USE YOUR BENCH GRINDER UNLESS IT IS

FIRMLY BOLTED TO A WORKBENCH OR RIGID FRAME.

NE JAMAIS TENTER D'UTILISER LA MEULEUSE D'ÉTABLI SI ELLE

N'EST PAS FERMEMENT BOULONNÉE À UN ÉTABLI OU À TOUT

AUTRE CADRE RIGIDE.

NUNCA INTENTE USAR SU ESMERILADORA DE BANCO A MENOS

QUE ESTÉ FIRMEMENTE ATORNILLADA A UN BANCO DE TRABAJO

O A OTRA ESTRUCTURA RÍGIDA.

CUT ALONG THIS LINE

DÉCOUPER LE LONG DU POINTILLÉ

CORTE A LO LARGO DE ESTA LÍNEA

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English

OUTPUT THIS PAGE BLANK

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