Craftsman 152.21152 User manual

Owner's Manual
ICRRFTSMRN'I
G-in. Wheel
1/5 Horsepower (maximum developed)
2000 R.P.M. to 3450 R.P.M. (no load speed)
6-in.VARIABLE SPEED
GRINDING CENTER
Model No.
152.211521
CAUTION:
FOR YOUR OWN SAFETY read
and follow all of the Safety and
Operating Instructions before
operating this Bench Grinder.
Customer Helpline
1-800-897-7709
Please have your Model No.
and Serial No. available.
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
Part No. OR90149 Espa_ol, pg. 17

SECTION PAGE
Warranty ............................................................................................................................................... 2
Product Specifications ....................................................................................................................... 2
Safety Instructions .............................................................................................................................. 3
Grounding Instructions ...................................................................................................................... 4
Specific Safety Instructions for Bench Grinders ............................................................................. 5
Accessories and Attachments ........................................................................................................... 6
Carton Contents .................................................................................................................................. 6
Know your Bench Grinder .................................................................................................................. 7
Assembly Instructions ........................................................................................................................ 8
Operating the Bench Grinder ........................................................................................................... 11
Maintenance ...................................................................................................................................... 13
Troubleshooting Guide ..................................................................................................................... 13
Part List .............................................................................................................................................. 14
Spanish .............................................................................................................................................. 17
Service Infomation ............................................................................................................ Back Cover
FULL ONE YEAR WARRANTY
If this product fails due to a defect in material or workmanship within one year from the date of purchase, RETURN
IT TO THE NEAREST SEARS STORE OR CRAFTSMAN OUTLET, and it will be replaced, free of charge.
This warranty gives you specific legal rights, and you may also have other rights, which vary, from state to state.
Sears, Roebuck and Co., Dept 817 WA, Hoffman Estates, IL 60179
Motor
Maximum HP developed
Volts
Hertz
RPM
Grinding Wheel Size
Grinding Wheel Grit
Wire Wheel Size
Lamp
Tool Rests
Eye Shield Assemblies
Spark Arrestors
Quench tray
1/5
120
60
2000 R.P.M. to 3450 R.P.M.
(no load speed)
6" x 3/4" x 1/2"
60
6"x 3/4" x 1/2"
120V, 40 watt or less
Track Light Bulb, Type R20,
medium base, or equivalent
(not included)
Left and Right
Clear Lexan Left and Right
Left and Right
6"x 2" x2"
To avoid electrical shock to yourself and damage to the
Bench Grinder, use proper circuit protection.
The Bench Grinder is factory wired for 120V, 60 Hz,
operation. Connect to a 120V, 15 amp branch circuit and
use a 15 amp time delay fuse or circuit breaker. The
electrical circuit cannot have any wire size less than #12.
To avoid shock or fire, replace power cord immediately if
it is damaged in any way.
2

GENERAL SAFETY INSTRUCTIONS
Operating a Bench Grinder can be dangerous
if safety and common sense are ignored. The
operator must be familiar with the operation of
the tool. Read this manual to understand this
Bench Grinder. DO NOT operate this Bench
Grinder if you do not fully understand the
limitations of this tool. DO NOT modify this
Bench Grinder in any way.
g. ALWAYS WEAR EYE PROTECTION. Any power
tool can throw debris into the eyes during oper-
ations, which could cause severe and permanent
eye damage. ALWAYS Wear Safety Goggles (that
comply with ANSI standard Z87.1) when operating
power tools. Safety Goggles are available at Sears
Retail Stores.
BEFORE USING THE BENCH GRINDER
V!_I,W_'_;_I10[d
To avoid serious injury and damage to the tool, read and
follow all of the Safety and Operating Instructions before
operating the Bench Grinder.
1. READ the entire Owner's Manual. LEARN how to
use the tool for its intended applications.
2. GROUND ALL TOOLS. If the tool is supplied with a
3-prong plug, it must be plugged into a3-contact
electrical receptacle. The 3rd prong is used to
ground the tool and provide protection against
accidental electric shock. DO NOT remove the 3rd
prong. See Grounding Instructions on page 4.
3. AVOID A DANGEROUS WORKING ENVIRON-
MENT. DO NOT Use electrical tools in a damp
environment or expose them to rain.
4. DO NOT use electrical tools in the presence of
flammable liquids or gasses
5, ALWAYS keep the work area clean, well lit, and
organized. DO NOT work in an environment with
foot surfaces that are slippery from debds, grease,
and wax.
6. KEEP VISITORS AND CHILDREN AWAY.
DO NOT permit people to be in the immediate work
area, especially when the electrical tool is operating.
7. DO NOT FORCE THE TOOL to perform an
operation for which itwas not designed for. It willdo
a safer and higher quality job by only performing
operations for which the tool was intended.
8. WEAR PROPER CLOTHING. DO NOT wear loose
clothing, gloves, neckties, or jewelry. These items
can get caught in the machine during operations and
pull the operator into the moving parts. The user must
wear a protective cover on their hair, if the hair is
long, to prevent it from contacting any moving parts.
10. WEAR A DUST MASK TO PREVENT INHALING
DANGEROUS DUST OR PARTICLES.
11. ALWAYS UNPLUG THE TOOL FROM THE ELEC-
TRICAL RECEPTACLE when making adjustments,
changing parts or performing any maintenance.
12. KEEP PROTECTIVE GUARDS IN PLACE AND IN
WORKING ORDER.
13. AVOID ACCIDENTAL STARTING. Make sure that
the powerswitch is in the "OFF" position before
plugging in the power cord to the electrical
receptacle.
14. REMOVE ALL MAINTENANCE TOOLS from the
immediate area priortoturning "ON"the BenchGrinder.
15. USE ONLY RECOMMENDED ACCESSORIES. Use
of incorrect or improper accessories could cause
serious injury to the operator and cause damage to
the tool. If in doubt, check the instruction manual
that comes with that particular accessory.
16. NEVER LEAVE A RUNNING TOOL UNATTENDED.
Turnthe power switch to the "OFF" position. DO NOT
leave the tool until ithas come to a complete stop.
17. DO NOT STAND ON A TOOL. Serious injury could
result if the tool tips overor you accidentally contact
the tool.
18.
19.
20.
DO NOT store anything above or near the tool where
anyone might try to stand on the tool to reach it.
MAINTAIN YOUR BALANCE. DO NOTextend yourself
over the tool. Wear oil resistant rubber-soled shoes.
Keep floor clear of debris, grease, and wax.
MAINTAIN TOOLS WITH CARE. Always keep tools
clean and in good working order. Keep all blades
and tool bits sharp.
SAVE THESE INSTRUCTIONS.
3

21. EACH AND EVERY TIME, CHECK FOR
DAMAGED PARTS PRIOR TO USING THE TOOL.
Carefully check all guards to see that they operate
properly, are not damaged, and perform their
intended functions. Check for alignment, binding or
breaking of moving parts. A guard or other part that
is damaged should be immediately repaired or
replaced.
22. CHILDPROOF THE WORKSHOP AREA by
removingswitchkeys,unpluggingtoolsfrom the
electrical receptacles,and usingpadlocks.
23. DO NOT OPERATE TOOL IF UNDER THE
INFLUENCE OF DRUGS OR ALCOHOL.
24. SECURE ALL WORK. When itis possible, use clamps
or jigs to secure the workpiece. This is safer than
attempting to hold the workpiece with your hands.
25. USE A PROPER EXTENSION CORD IN GOOD
CONDITION. When using an extension cord, be sure
to use one heavy enough to carry the current your
product will draw. The table below shows the correct
size to use depending on cord length and nameplate
amperage rating. If in doubt, use the next heavier
gauge.
The smaller the gauge number, the larger diameter of
the extension cord. If in doubt of the proper size of an
extension cord, use a shorter and thicker cord. An
undersized cord will cause a drop in line voltage result-
ing in a loss of power and overheating. USE ONLY A
3-WIRE EXTENSION CORD THAT HAS A3-PRONG
GROUNDING PLUG AND A 3-POLE RECEPTACLE
THAT ACCEPTS THE TOOL'S PLUG.
GUIDELINES FOR
EXTENSION CORDS
If you are using an extension cord outdoors, be sure
it is markedwith the suffix "W-A"("W"inCanada) to
indicatethatit isacceptablefor outdooruse.
Be sure your extension cord is properly sized, and in
good electricalcondition.Always replace a damaged
extensioncordor have itrepairedby a qualifiedperson
before using it.
Protect your extension cords from sharp objects,
excessiveheat, and damp or wet areas.
Oto6 Amps
6to 10 Arnps
10to 12 Amps
120VOLT OPERATION ONLY
25'LONG 50'LONG 100'LONG
18AWG 16AWG 16AWG
18AWG 16AWG 14AWG
16AWG 16AWG 14AWG
150*LONG
14AWG
12AWG
12AWG
IN THE EVENT OF A MALFUNCTION OR BREAK-
DOWN, grounding provides the path of least resistance
for electric current and reduces the risk of electric shock.
This tool is equipped with an electric cord that has an
equipment grounding conductor and a grounding plug.
The plug MUST be plugged into a matching electrical
receptacle that is properly installed and grounded in
accordance with ALL local codes and ordinances.
CHECK with a qualified electrician or service personnel
if you do not completely understand the grounding
instructions, or if you are not sure the tool is properly
grounded.
USE ONLY A 3-WIRE EXTENSION CORD THAT HAS
A3-PRONG GROUNDING PLUG AND A 3-POLE
RECEPTACLE THAT ACCEPTS THE TOOL'S PLUG.
DO NOT MODIFY THE PLUG PROVIDED. If itwillnot
fit the electricalreceptacle, have the properelectrical
receptacle installedby a qualifiedelectrician.
IMPROPER ELECTRICAL CONNECTION of the
equipment grounding conductor can result in risk of
electric shock. The conductor with the green insulation
(with or without yellow stripes) is the equipment
grounding conductor. DO NOT connect the equipment
grounding conductor to a live terminal if repair or
replacement of the electric cord or plug is necessary.
REPLACE A DAMAGED OR WORN CORD
IMMEDIATELY.
Fig. A
grounding
conductor
3-wire electrical cord
3-prong
electrical
receptacle
SAVE THESE INSTRUCTIONS.
4

Fig. B grounding
adapterlug
grounding (_
conductor _/
_ctrical cord 2-prong
electricalreceptacle
This tool is intended for use on a circuit that has an
electrical receptacle as shown in FIGURE A. FIGURE A
shows a 3-wire electrical plug and electrical receptacle
that has a grounding conductor. If a property grounded
electhcal receptacle is not available, an adapter as
shown in FIGURE B can be used to temporarily connect
this plug to a 2-contact ungrounded receptacle. The
adapter has a rigid lug extending from it that MUST be
connected to a permanent earth ground, such as a
properly grounded receptacle box. THIS ADAPTER IS
PROHIBITED IN CANADA.
CAUTION: In all cases, make certain the electrical
receptacle in question is properly grounded. If you are
not sure have a certified electrician check the electrical
recaptacle.
This BenchGrinder is for indoor use only. To avoid
serious injury, do not expose to rain or use in damp
locations.
1.
2.
3.
4,
5.
ALWAYS USE THE EYE SHIELDS AND WHEEL
GUARDS provided withthe grinder.
REPLACE A CRACKED OR DAMAGED
GRINDING WHEEL IMMEDIATELY. Adamaged
wheel can discharge debris at a high velocity
towards the operator. Carefully handle the grinding
wheels since they are abrasive. Prior to replacing a
grinding wheel, check it for cracks. DO NOT remove
the blotter or label on the both sides of the gdnding
wheel. Tighten the spindle nut just enough to hold
the grinding wheel firmly to the Bench Grinder. Do
not over-tighten the nut. Excessive clamping force
can damage the grinding wheel. Only use the wheel
flanges provided with the grinder. When selecting a
replacement grinding wheel, verify that the grinding
wheel has a higher R.P.M. rating than the maximum
R.P.M. of the Bench Grinder.
THE DIAMETER OF THE GRINDING WHEELS
WILL DECREASE WITH USE. Adjust the toolrests
and spark arrestorsto maintaina distance of 1/16"
from the wheel.
DO NOT STAND IN FRONT OF THE BENCH
GRINDER WHEN STARTING IT. Stand to one side
ofthe BenchGrinderand turnit"ON".Wait at the
side for one minuteuntilthe grinder comesup tofull
speed. There is alwaysa possibility that debrisfrom
a damaged grindingwheel may be discharged
towards the operator.
THE BENCH GRINDER WILL PRODUCE SPARKS
AND DEBRIS DURING GRINDING OPERATIONS.
Be sure that there are not any flammable materials
in the vicinity. Frequently clean grinding dust from
the back of the BenchGrinder.
SPECIFIC SAFETY INSTRUCTIONS
FOR BENCH GRINDERS
The operation of any grinder can result in debris being
thrown into your eyes, which can result in severe eye
damage. ALWAYS Wear Safety Goggles (that comply
with ANSI standard Z87.1) when operating the grinder,
Safety Goggles are available at Sears Retail Stores. Keep
your thumbs and fingers away from the grinding wheels.
6.
7.
NEVER FORCE THE WORKPIECE AGAINST A
GRINDING WHEEL, especially if the wheel is cold.
Apply the workpieca slowly, allowing the grinding
wheel an opportunity to warm up. This will minimize
the chance of wheel breakage. DO NOT gdnd using
the sides of the grinding wheels. DO NOT apply
coolant directly to the grinding wheel.
KEEP ALL WHEEL GUARDS IN PLACE. DO NOT
USE THE BENCH GRINDER WITH THE WHEEL
GUARDS REMOVED.
8. KEEP THE TOOL RESTS FIRMLY TIGHTENED.
9. ALWAYS USE THE SUPPLIED WHEEL DRESSER
TO RESURFACE THE FACE OF THE GRINDING
WHEEL.
SAVE THESE INSTRUCTIONS.

AVAILABLE ACCESSORIES
Visit your Sears Hardware Department or see the Sears
Power and Hand Tool Catalog for the following
accessories.
ITEM
Replacement grinding wheels
Wire and Buffing wheels
Spacers
Wheel dressers
Universal stand
STOCK NUMBER
See catalog or store
See catalog or store
See catalog or store
See catalog or store
9-22250
Sears may recommend other accessories not listed in
this manual.
See your nearest Sears Hardware Department or Sears
Power and Hand Tool Catalog for other accessories.
Do not use any accessory unless you have completely
read the Owner's Manual for that accessory.
Use only accessories recommended for this Bench
Grinder. Using other accessodes may be cause serious
injury and cause damage to the Bench Grinder.
UNPACKING AND CHECKING
CONTENTS (Fig. C)
This Bench Grinder will require a minimal amount of
assembly. A 12mm x 10mm open end wrench is pro-
vided for mounting the Tool Rest Assemblies and the
Spark Arrestor Assemblies. A philips screwdriver is not
provided to mount the Wheel Dresser Support
Remove all of the parts from the shipping box and lay
them on a clean work surface. Compare the items to
(Fig. C), verify that all items are accounted for before
discarding the shipping box.
Fig. C
If any parts are missing, do not attempt to plug in the
power cord and turn "ON" the Bench Grinder. The
Bench Grinder can only be turned "ON" after all the
parts have been obtained and installed correctly.
The following items are to be provided inthe shipping box:
A. Grinder
B. Quench tray
C. Wheel dresser
D. Hex Wrench 12mm x 10mm open end
E. Left Eyeshield assembly (not shown)
F. Right Eyeshield assembly
G. Left tool rest assembly (not shown)
H. Right tool rest assembly
I. Drill Bit Sharpening Plate
D
H
A
F
6

13
\318
5
16
11B
6
11A
15
412B
1. WHEEL GUARD - Covers the grinding wheels and
protects against accidental contact.
2. WHEEL COVER - Covers the grinding wheels and
provides access for routine maintenance.
3. MOTOR HOUSING - Contains the electrical motor.
4. MOUNTING FEET- Helps to minimize vibration of
the grinder.
5. EYE SHIELD MOUNTS- Supports the eyeshields.
6. EYE SHIELDS- Protective Lexan see-thru shields to
prevent any loose debris from contacting the operator.
7. FLEXIBLE WORK LIGHT - Provides assistance to
the operator for grinding operations.
8. SPARK ARRESTORS - Prevents hot sparks and
debris from contacting the operator.
9. TOOL REST ADJUSTABLE SUPPORTS- Lets the
operator position the tool rest closer to the wheel as
the wheel decreases in diameter due to wear.
10. TOOL RESTS -Used to support the workpiece that is
being ground. Adjustable to provide angled surfaces.
11. A) 6" GRINDING WHEEL 60 GRIT - Used to
remove heavy material from workpiece.
9
A
11. B) 6" WIRE WHEEL - Used to remove light material
from workpiece.
12. A) ON /OFF SWITCH - Used to turn "ON" and turn
"OFF" the grinder.
12. B) VARIABLE SPEED SWITCH - Permits adjusting
rotational speed of grinding wheels.
13. WHEEL DRESSER- Used to clean and smooth
surface of the 6" Grinding Wheel only. Not to be
used with the 6" Wire Wheel.
14. QUENCH TRAY - Used to cool workpiece after
grinding.
15. MOUNTING PAD - Used to secure the grinder to a
workbench or suitable work surface.
16. GRINDING WHEEL IDENTIFICATION LABEL -
Provides information on wheel size, grit and
maximum rpm. Must be left on to distribute the load
of tightening the Lock Nuts.
17. FLANGES - Used to secure the grinding wheels to
the grinder and distribute the load of the Lock Nuts.
18. LOCK NUT -Used to secure the grinding wheels to
the grinder.
19. SPACER - Used to align the wire wheel into the
center of the Left Tool Rest.

A 12mm x 10mm open end wrench is provided for
mounting the Tool Rest Assemblies and the Spark
Arrestor Assemblies. A philips screwdriver is not
provided to mount the Wheel Dresser Support.
1. DO NOT assemble the Bench Grinder until you are
sure the tool IS NOT plugged in.
2. DO NOT assemble the Bench Grinder until you are
sure the power switch is in the "OFF" position.
3. DO NOT assemble the Bench Grinder until you are
sure the grinding wheels are firmly tightened to the
Bench Grinder.
TOOL RESTS (Figs. D and E)
The Bench Grinder is provided with two different Tool
Rests assemblies. The Left Side Tool Rest is entirely
flat. The Right Side Tool Rest is also flat but it also has
an accessory plate for sharpening drill bits.
1. Remove both Tool Rest Assemblies from the plastic
bags and check to see that you have the following.
Left Side Tool Rest
Left Side Tool Rest Support
Right Side Tool Rest
Right Side Tool Rest Suppor
Drill Bit Sharpening Plate
5/16" Fiat Washer
5/16-18 x 5/8" Hex head screw
Adjustment Knob (qty. 2)
2. Assemble the Tool Rest Supports (A) to the inside
surface of the Wheel Covers (B) with the flat washers
(C) and hex head screws (D) as shown. See Figure D.
3. Assemble the Tool Rests (E) to the Supports (F) with
the flat washers (G) and Adjustment Knobs (H) as
shown. See Figure E.
4. Adjust each Tool Rest until its inside edge (I) is 1/16"
from the grinding wheel.
Fig. D
C
B
Fig. EE
G
H
5. Install the Ddll Bit Sharpening Plate, by loosening
the Right Side Adjustment Knob until there is
approximately a 1/4" of threads visible. Place the
Plate onto the Right Side Tool Rest and over the
visible threads. The Flat Washer must be placed
between the Plate and the Adjustment Knob.
Tighten the Adjustment Knob.
SPARK ARRESTORS (Fig. F)
1. Remove both Spark Arrestor Assemblies from the
plastic bags and check to see that you have the
following.
Left Side Spark Arrestor
Right Side Spark Arrestor
1/4" Flat Washer (qty. 2)
1/4-20 x 1/4" Hex head screw (qty. 2)
2. Assemble the Spark Arrestors (A) to the inside
surface of the Wheel Covers (B) with the flat
washers (C) and hex head screws (D) as shown.
See Figure E.
3. Adjust each Spark Arrestor until the lower edge (E)
is 1/16" from the grinding wheel.
Fig. FA
B
D

EYESHIELDS(Fig. G)
1. Remove both Eye Shield Assemblies from the
plastic bags and chock to see that you have the
following.
Eyeshield (qty. 2)
Lock Knob (qty. 2)
Spacer (qty. 2)
M6 Flat washer (qty. 2)
M6 x 80mm carriage head screw (qty. 2)
2. Assemble the Eyeshield (C) to the Spark Arrestor
(A) by insertingthe carriage head screw (B) through
the Eyeshield, Spark Arrestor and the spacer (D).
See Figure G.
3. Assemble the flat washer (E) and Lock Knob (F) to
the carnage head screw and tighten until the
Eyeshield remains in the desired position. See
Figure G.
Fig. G DB
WHEEL DRESSER (Fig. H)
1. Remove the Wheel Dresser,the plasticSupport,and
the two #10-24 x 3/8" screws from the plasticbag.
2. Attach the plasticSupport(A) tothe top ofthe motor
housingwith the twoscrews (B). See FigureH.
3. Assemble the Wheel Dresser (C) to the Support as
shown. See Figure H.
Fig. H C
A
E\
F A
C
QUENCH TRAY (Fig. I)
The Quench Tray isprovidedtocoolthe workpiece
duringand aftergrindingoperations.
1. Attach the QuenchTray (A) to baseof the Bench
Grinder (B) as shown.See FigureI.
2. Partially filltheQuench Tray withwater. DO NOT
ove_ll! DO NOT use anyotherliquidin theQuench
Tray otherthan water.
3. Place the workpieceintothe water after performing
the grindingoperationtocoolit.
4. DO NOT putany water directlyontothe grinding
wheels.
Fig. I
A
9

WORK LIGHT (Fig. J)
The Bench Grinderisprovidedwitha FlexibleWork
Lightto assistinvisibilityof theworkpiece.
The Bench Grinderis NOT providedwitha light bulbfor
the FlexibleWork Light.
PERMANENT MOUNTING (Fig. K)
Use the mounting pads on the base of the gdnder to
firmly attach grinder to a solid work surface (hardware
not included). See Figure K.
Fig. K
To reduce the risk of fire, use a 120V, 40 watt or less
Track Light Bulb, Type R20, medium base or equivalent
(not included). DO NOT use a light bulb that extends
past the end of the light housing.
1. The Flexible Work Light (A) may be turned "ON" or
"OFF" by using the rotary switch (B) on the top
surface of the housing. The switch can be rotated in
the clockwise direction only. See Figure J.
NOTE: The Flexible Work Light can be turned "ON" or
"OFF" even if the Bench Grinder is turned "OFF".
CAUTION: The FlexibleWork Lighthousing will remain
hot for a few minutes after turning it "OFF". Avoid contact
with housing until it is cool.
Fig. J AB
To avoid serious injury, secure the Bench Grinder to a
solid work surface. If the Bench Gdnder is not securely
mounted, it will have the ability to move or tip over during
grinding operations and possibly cause the operators
fingers to contact the grinding wheels.
10

Fig. L 4.
5.
6.
7,
Allow the grinding wheels to come up to a steady
speed for at least one minute. The R.P.M.'s of the
Bench Grinder can be now increased to the desired
speed for the particular grinding operation by
rotating the Variable Speed Switch clockwise.
The Flexible Work Light may be turned "ON" if desired.
Adjust the eyeshields. Place the workpiece on the
appropriate tool rest for the desired operation.
Move the workpiece towards the grinding wheel
until it lightly touches. Move the workpiece back
and forth across the front surface of the grinding
wheel removing the amount of material desired.
The Bench Grinder is designed for hand held grinding,
sharpening, and cleaning operations.
ALWAYS WEAR EYE PROTECTION! Hot sparks are
produced during grinding operations.
Sharpening and removal of metal can be done on the
right side of the Bench Grinder using the grinding wheel.
Cleaning of metal surfaces can be done using the wire
wheel on the left side of the Bench Grinder.
GRINDING SPEED CHART
Low Speed 2000 RPM High Speed 3450 RPM
Light Duty Operations Heavy Duty/Normal Operations
Lightgrinding Heavy grinding
Sharpening Stock removal
Rust and paint removal Deburring
Lowered grinding temperature Buffing
1. The Power Switch must be in the "OFF" position
(see Fig. L) and the Variable Speed Switch must be
turned to its slowest setting by being turned all the
way to the left until solid resistance is felt.
2. Stand to the side of the Bench Grinder and plug in
the power cord to a suitable power source.
3. Remain to the side of the Bench Grinder and turn it
"ON" by moving the power switch to the up position.
To avoid serious injury, never grind on the sides of
the grinding wheels.
8, If the Drill Bit Sharpening Plate was installed earlier,
lay the drill bit flat in the "V" groove. Firmly hold on to
the drill bit shank. Slide the drill bit towards the
grinding wheel until it lightly touches. Keep the drill
bit flat to the plate and rotate the drill bit.
9. The operator may place the hot end ofthe
workpieceintothe water in the quench tray to cool it.
10. After completing the grinding operations, turn "OFF"
the Bench Grinder by pushing down on the Power
Switch. CAUTION: It will take afew minutes for the
grinding wheels to come to a complete stop.
11. Turn the Variable Speed Switch counterclockwise to
return it to its slowest setting.
12. Turn "OFF" the Flexible Work Light.
CAUTION: The Flexible Work Light housing will
remain hot for a few minutes after turning it"OFF".
13. Avoid contact with housing until it is cool. Unplug the
Bench Grinder from the power source.
NOTE: To prevent unauthorized use of the Bench
Grinder, the power switch has a removable locking key.
With the power switch in the "OFF" position, pull the
locking key out. The Bench Grinder cannot be turned
"ON" with the key removed. Insert the locking key to
resume grinding operations.
11

USING THE WHEEL DRESSER (Fig. M)
Fig. M
CHANGING THE GRINDING WHEEL
AND WIRE WHEEL (Fig. N)
Fig. N
A
B
.JJ
The Wheel Dres_r is grinding wheel
only. It will remove buildup of material on the grinding
wheel, remove imperfections and make the corners of
the grinding wheel square. See Figure M.
DO NOT use the Wheel Dresser on the Wire Wheel.
1. If the optional Drill Bit Sharpening Accessory Plate
was installed earlier, remove itand reassemble the
right side tool rest (A) and adjust it until it is in the flat
horizontal position as shown and 1/16" away from
the grinding wheel.
2. Turn =ON"the Bench Grinder and then turn the
Variable Speed Switch clockwise until solid
resistance isfelt. Let the grinding wheel come up
to asteady speed for one minute.
3. After the grinding wheel has gotten to a steady
speed, place the Wheel Dresser (B) flat on the Tool
Rest with the serrated wheels facing the grinding
wheel.
4. Firmly hold on to the handle of the Wheel Dresser.
5. Move the Wheel Dresser forward until the serrated
wheels make light contact with the grinding wheel
(C). After contact has been made, slide the Wheel
Dresser side to side across the Tool Rest to dress
the grinding wheel until the edge of the grinding
wheel is square and the surface is clean.
6. After the operator has completed dressing the
grinding wheel, turn "OFF" the Bench Grinder and let
the grinding wheel come to a complete stop.
7. Inspect the grinding wheel for any damage?
8. The grinding wheel may now be slightly smaller in
diameter after dressing. Readjust the tool rests and
spark arrestors to maintain a 1/16" clearance to the
grinding wheel.
C
FD
E
B
A
Due to normal wear, both wheels will need to be
replaced occasionally. See Figure N.
1. Turn the power switch "OFF" and unplug the power
cord from its power source
2, Rotate the eyeshieids to the "UP" position for access
to the tool rests.
3. Remove the three screws (F) holding the Wheel
Covers (E) to the Bench Grinder.
4. Remove the Wheel Covers.
5. Place a small wooden wedge between the Abrasive
wheel and Tool Rest to prevent the wheels from
rotating.
6. Remove the right side grinding wheel by turning the
Iocknut (D) in the counterclockwise direction with a
13/16" hex wrench. The left side wire wheel can be
removed by turning the Iocknut in the clockwise
direction with a 13/16" hex wrench.
7. Remove the Outer Wheel Flange (C) and then
remove the abrasive wheel (B) from the arbor shaft (A).
8. CAUTION: The new abrasive wheel to be put onto
the Bench Grinder must be have a higher R.P.M
rating than the Bench Grinder. The abrasive wheel
must have a 6" diameter with a 1/2" bore diameter
for the arbor shaft. The label on the side of the abra-
sive wheels must stay on, DO NOT remove this label.
9. Replace the abrasive wheel, outer wheel flange, and
the Iocknut in reverse order from removal.
CAUTION: DO NOT OVER-TIGHTEN the lock nut as
this may damage the abrasive wheels and cause serious
injury to the operator.
CAUTION: A 4mm thick spacer is provided between the
Inner Wheel Flange and the motor on the Wire Wheel
side of the Grinder. This spacer must be used when a
Wire Wheel is to be mounted on the Grinder. The spacer
locates the Wire Wheel in the center of the Tool Rest.
Remove the spacer if you are using a Grinding Wheel.
12

To avoid serious inury, turn the power switch "OFF" and
unplug the power cord from its power source prior to any
maintenance.
LUBRICATION
The Bench Grinder has sealed lubricated bearings in the
motor housing that do not require any additional
lubrication from the operator.
CLEANING
With the Bench Grinder unplugged, rotate the abrasive
wheels slowly and inspect for any damage or trapped
shavings.
Replace the abrasive wheels if there is any damage at
all. Failure to replace a damaged wheel can cause
serious injury to the operator
CAUTION: DO NOT USE FLAMMABLE MATERIALS
to clean the Bench Grinder. A clean dry rag or brush is
all that is needed to remove dust and debris buildup.
Repairs to the Bench Grinder should be performed by
trained personnel only. Contact your nearest Sears
Service Center for authorized service. Unauthorized
repairs or replacement with non-factory parts could
cause serious injury to the operator and damage to the
Bench Grinder.
TO PREVENT INJURY TO YOURSELF or damage to the Bench Grinder, turn the switch to the =OFF"position and
unplug the power cord from the electrical receptacle before making any adjustments.
PROBLEM
Motor does
not run
Motor does not
have full power
Motor runs hot
Motor stalls or
or runs slow
Fuse blows or
circuit breaker
trips
LIKELY CAUSE
1. Machine not plugged in
2. Power switch in "OFF" position
3. Power cord is faulty
4. Fuse or circuit breaker are open
5. Damaged motor
1. Incorrectlinevoltage
2. Damaged motor
1. Motor is overloaded
2. Poor air circulation around motor
3. Motor is overloaded
1. Motor is overloaded
2. Motor is overloaded
3. Incorrect line voltage
4. Capacitor has failed
1. Motor overloaded
2. Overloaded electrical circuit
3. Wrong fuse or circuit breaker
4. Undersized or excessive length of
extension cord
5. Grinding wheels are blocked
SOLUTION
1. Plug power cord intoelectrical receptacle
2. Liftswitch to "ON" position
3. Return to Sears Service Center
4. Ovedoaded electrical circuit
5. Returnto Sears Service Center
1. Have a qualified electrician check line for proper
voltage.
2. Return to Sears Service Center
1. Reduce pressure on workpiece
2. Remove any blockage around motor
3. Adjust variable speed to higher R.P.M.'s
1. Reduce pressure on workpiece
2. Adjust variable speed to higher R.P.M.'s
3, Have a qualified electrician check line for proper
voltage
4. Return to Sears Service Center
1. Reduce pressure on workpiece
2. Reduce the amount of items on circuit
3. Replace with correct fuse or circuit breaker
4. Use correct size; see manual
5. Unplug machine and remove obstruction
13

6-IN. GRINDING CENTER PARTS LIST MODEL NO.152.211521
When servicing, use only CRAFTSMAN replacement parts. Use of any other parts may create a HAZARD or cause
product damage.
Any attempt to repair or replace electrical parts onthis Bench Gdnder may create a HAZARD unlessrepair is done by a
qualified service technician. Repair service is available at your nearest Sears Service Center.
Always order by PART NUMBER, not by key number.
KeyNo. PART No. Description Qty. Key No. PARTNo. Description Qty,
1 OR90055 CARRIAGE HD SCR M6 x 80ram 1
2 OR90152 EYEBHIELD 1
3 BTO851006 FLAT WASHER M6 1
4 ORS0001 KNOB M6 1
5 OR90002 SPACER 1
6 OR9SO03 SPARK ARRESTOR (RIGHT) 1
7 ST8551012 FLAT WASHER 1/4" 1
8OR90150 HEX HD SCR 114-20 x 1/4" 1
9 STD511002 SCR #10-24 x 1/4" 3
10 ORSD004 COVER 1
11 OR90030 HEX NUT 1/2-12 1
12 OR90005 FLANGE 2
13 9-64534 6" GRINDtNG WHEEL 60 GRIT 1
(AVAILABLE AT MOST RETAIL STORES)
14 OR90006 WHEEL GUARD (R_GHT) 1
15 OR90007 ROTATION LABEL 1
16 STD511003 SCR #10`24 x 3/6- 3
17 OR90008 TOOL REST SUPPORT (RIGHT) 1
18 OR90153 TOOL REST (RIGHT) 1
19 OR90154 DRILL BIT SHARPENING PLATE 1
20 ST8551031 FLAT WASHER 5/16" 1
21 OR90155 KNOB 5/16-18 1
22 ST8551031 FLAT WASHER 5/16- 2
23 ST8523105 HEX HD BCR 5/16-18 x 1/2" 2
24 ST8511007 SCR #10`24 x 5/6- 4
25 OR90012 END BELL (RIGHT) 1
54 OR90ti05 FLANGE 2
55 OR90029 LEFT HAND HEX NUT 1/2-12 1
56 ORSO004 COVER 1
57 ST8511002 SCR #t0`24 x 1/4" 3
58 STD364839 POWER CORD 1
59 BT8511882 SCR #10-24 x 114" 1
60 OR98053 EXT TOOTH WASHER #18 1
62 OR90017 STRAIN RELIEF 6N3-4R 1
63 STD511003 SCR #10`24 x 3/6- 2
64 OR98831 CORD MOUNTING pLATE 1
65 OR90832 BARE 1
66 OR90218 LIGHT ASSY 1
67 0R91453 WARNING LABEL 1
68 OR98837 SWITCH 1
69 OR98038 SWITCH KEY 1
70 OR90056 HE)( SOC BET BCR M4 x 8ram 1
71 OR90039 KNOB 1
72 BT8511883 BCR#10-24x3/6- 2
73 OR80036 VARIABLE SPEED LABEL 1
74 OR80035 SWITCH PLATE 1
75 OR98040 QUENCH TRAY 1
76 ST8551125 LOCK WASHER 1/4" 2
77 ST8541825 HEX NUT 1/4-28 2
78 OR80041 CAPACITOR 1
80 ST8511002 SCR #10`24 x 1/4" 1
81 OR98045 PAD 4
26 OR90056 HE)( SOC SET SCR M4 x 6mm 182 STD551018 FLAT WASHER #10
27 OR98013 PLATE 1
28 OR98014 SENSOR ASSY 1
29 OR98857 SCR M3 x 6ram 2
38 OR90015 MOTOR ASS'Y 1
(See KEY NO.'s 100`118 for individual parts)
31 OR90823 NAMEPLATE 1
33 OR90824 SPEC PLATE 1
36 OR98801 KNOB M6 1
37 ST8851006 FLAT WASHER M6 1
38 OR90152 EYESHIELD 1
39 OR90055 CARRIAGE HD SCR M8 x 80ram 1
40 OR98802 SPACER 1
41 OR90025 SPARK ARRESTOR (LEFT) 1
42 OR98158 HEX HD BCR 1/4-20 x 114" 1
43 ST8551812 FLAT WASHER 1/4" 1
44 OR90155 KNOB 5/16-18 1
45 ST8551031 FLAT WASHER 5/16" 1
46 OR98156 TOOL REST (LEFT) 1
47 OR90826 TOOL REST SUPPORT (LEFT) 1
48 ST8523105 HEX HD SCR 5/16-18 x1/2" 2
48 STD551ti31 FLAT WASHER 5/16- 2
58 OR98887 ROTATION LABEL 1
51 OR90028 WHEEL GUARD (LEFT) 1
52 ST8511082 SCR #10-24 x 3/6- 3
53 8-64129 6" WIRE WHEEL 1
(AVAILABLE AT MOST RETAIL STORES)
4
83 STD511005 SCR #10`24 x 1/2" 4
84 OR90042 CIRCUIT BOARD ASBY 1
85 STD851004 FLRT WASHER M4 2
86 0R90854 TAP SCR M4 x 6ram 2
87 OR98044 COVER PLATE 1
88 BT8551110 LOCK WASHER #10 4
89 ST8511885 BCR #10`24 x 1/2" 4
90 ST8511803 BCR #10`24 x 3!6- 2
81 OR90048 WHEEL DRESSER 1
92 OR9004B SUPPORT 1
93 ORS00S0 18ram x 12mm OPEN END WRENCH 1
94 OR90149 Owner's ManUal (Not l]]ustrated) 1
95 OR90058 128V, 48W, Mini Reflector Bulb TYPE R14,
(Not Illustrated, Not Included)
180 0R90052 SCR M4 x 135mm 4
101 OR98816 MOTOR BELL (LEFT) 1
102 BTD315225 BEARING 628ZT_Z 2
103 OR90018 FAN 1
104 ST8512510 BCR 1/4-28 x 1" 2
185 OR90819 MOTOR BODY 1
106 OR90820 ARMATURE 1
187 OR98821 FIELD 1
108 ORg00Z2. MOTOR BELL (RIGHT) 1
108 ST8852804 LOCK WASHER M4 4
118 ST8840487 HE)( NUT M4 4
111 OR90157 SPACER 1
14

47
I
-107
o
rll
r-
z
0
ol
k)
,.&
_n

16