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8″ Bench Grinder
MOTOR 3.6AMP, 120V- 60Hz
SPEED 3560 RPM (no load speed)
WHEEL DIAMETER 8 in.
WHEEL THICKNESS 1 in.
ARBOR SIZE 5/8 in.
POWER CORD 12 ft.
MACHINE WEIGHT 32 lbs
Call us on our toll free customer support line:
• Technical questions
• Replacement parts
• Parts missing from package
PERFORMAX® 8″ Bench Grinder WARRANTY
30-DAY MONEY BACK GUARANTEE:
This PERFORMAX® brand power tool carries our 30-Day Money Back
Guarantee. If you are not completely satisfied with your PERFORMAX® brand
power tool for any reason within thirty (30) days from the date of purchase, return
the tool with your original receipt to any MENARDS® retail store, and we will
provide you a refund – no questions asked.
2-YEAR LIMITED WARRANTY:
This PERFORMAX® brand power tool carries a 2-Year Limited Warranty to the
original purchaser. If, during normal use, this PERFORMAX® power tool breaks
or fails due to a defect in material or workmanship within two (2) years from the
date of original purchase, simply bring this tool with the original sales receipt
back to your nearest MENARDS® retail store. At its discretion, PERFORMAX®
agrees to have the tool or any defective part(s) repaired or replaced with the
same or similar PERFORMAX® product or part free of charge, within the stated
warranty period, when returned by the original purchaser with original sales
receipt. Not withstanding the foregoing, this limited warranty does not cover any
damage that has resulted from abuse or misuse of the Merchandise. This
warranty: (1) excludes expendable parts including but not limited to blades,
brushes, belts, bits, light bulbs, and/or batteries; (2) shall be void if this tool is
used for commercial and/or rental purposes; and (3) does not cover any losses,
injuries to persons/property or costs. This warranty does give you specific legal
rights and you may have other rights, which vary from state to state. Be careful,
tools are dangerous if improperly used or maintained. Seller’s employees are
not qualified to advise you on the use of this Merchandise. Any oral
representation(s) made will not be binding on seller or its employees. The rights
under this limited warranty are to the original purchaser of the Merchandise and
may not be transferred to any subsequent owner. This limited warranty is in lieu
of all warranties, expressed or implied including warranties or merchantability
and fitness for a particular purpose. Seller shall not be liable for any special,
incidental, or consequential damages. The sole exclusive remedy against the
seller will be for the replacement of any defects as provided herein, as long as
the seller is willing or able to replace this product or is willing to refund the
purchase price as provided above. For insurance purposes, seller is not allowed
to demonstrate any of these power tools for you.
For questions / comments, technical assistance or repair parts –
Please Call Toll Free at: 1-866-915-8626 (M-F Sam – 6pm)
SAVE YOUR RECEIPTS. THIS WARRANTY IS VOID WITHOUT THEM.
Distributed by: Menard, Inc., Eau Claire, Wl 54703
Rev 1.3 15/11/2013
TABLE OF CONTENTS
Rules for safe operation………………………………………………………………….. Page 3
Carton contents…………………………………………………………………………….. Page 9
Description………………………………………………………………………………….. Page 10
Assembly and adjustment…………………………………………………………………PagelO
Grinding Operation………………………………………………………………………. Page 12
Parts list……………………………………………………………………………………… Page 16
Exploded view…………………………………………………………………………….. Page 17
/!\ WARNING: Some of ffie following symbols may appear on the machine. Study
these symbols and leam their meaning. Proper interpretation of these symbols will
allow for more efficient and safer operation of this tool.
N/cm2 Newtons per square
OPM Oscillations per minute
aAy Three-phase alternating
3nAy Three-phase alternating
current with neutral
© Read all safety warnings
——- Direct current
rio No load speed
Alternating or direct
i i Watertight construction
© Protective grounding at
Class I tools
0 Off position
A Warning symbol
IS Wear your safety
glasses <D Wear hearing protection
THIS SYMBOL DESIGNATES THAT THIS TOOL IS LISTED BY
THE UNDERWRITER LABORATORIES INC. TO UNITED STATES
AND CANADIAN STANDARDS.
CONFORMS TO UL STANDAND No 987
Certified to Can/CSA STD. C22.2 No. 71.2
RULES FOR SAFE OPERATION
GENERAL SAFETY RULES
/^WARNING! Read and understand all instructions. Failure to follow all
instructions listed below may result in electric shock, fire and/or serious
+/ KNOW YOUR POWER TOOL. Read the operator’s manual carefully. Learn
the grinder’s applications and limitations as well as the specific potential
hazards related to this tool.
</ GUARD AGAINST ELECTRICAL SHOCK BY PREVENTING BODY CONTACT
WITH GROUNDED SURFACE. For example, pipes, radiators, ranges,
</ KEEP GUARDS IN PLACE and in working order.
REMOVE ADJUSTING KEYS AND WRENCHES. Form a habit of checking to see
that keys and adjusting wrenches are removed from tool before turning it on.
«/ KEEP WORK AREA CLEAN. Cluttered areas and benches invite accidents.
«/ DON’T USE IN DANGEROUS ENVIRONMENT. Don’t use power tools in damp
or wet locations, or expose them to rain. Keep work area well lighted.
V KEEP CHILDREN AND VISITORS AWAY. All visitors should be kept safe
distance from work area.
</ MAKE WORKSHOP KID PROOF with padlocks, master switches, or by
removing starter keys.
+/ DON’T FORCE TOOL It will do the job better and safer at the rate for which it
V USE RIGHT TOOL Don’t force tool or attachment to do a job for which it was
AWARMNG: When servicing, use only original equipment replacement parts. The use of any other parts
may create a safety hazard or cause damage to the trim router.
Any attempt to repair or replace electrical parts on this trim router may create a safety hazard unless repairs
are performed by a qualified technician. For more information, call the toll-free helpline, at 1-866-915-8626.
Part No. Description
2 Flat washer
3 Flat washer
4 Anti-skid washer
6 Left guard cover
7 Middle guard cover
8 Hex nut
11 Carriage bolt
12 Left tool rest
14 Light cover
17 Spring washer
18 Flat washer
19 Wire protection
21 Bulb base
24 Light plate
26 Spring washer
27 Flat washer
29 Eyeshield holder
31 Cord plate
32 Eyeshield arm
Part No. Description
36 Spring washer
37 Flat washer
38 End bell
42 Motor cover
43 Flat washer
44 Spring washer
47 Flat washer
48 Spring washer
SO Right tool rest
51 Right guard cover
52 Hex nut
S3 Spring washer
54 Flat washer
57 Switch plate
59 On/off switch
60 Light switch
61 Power cord
64 Strain relief
65 Cord plate
67 Coolant tray plate
68 Coolant tray
1. Turn off and unplug the grinder
2. Remove the wheel cover by loosening the screws.
3. To prevent wheel rotation, push a wood wedge between the grinding wheel
and the guard.
4. Loosen the wheel nut in a clockwise direction for the left side and a
counterclockwise direction for the right side.
5. Remove the outer flange and grinding wheel.
6. To install a new grinding wheel, reverse the above procedure.
NOTE: Be sure the grinding wheel and outer flange are properly seated on the
WORKLIGHT BULB REPLACEMENT (Fig.10)
NOTE: Follow these instructions to
change a burnt out bulb.
1. Turn off and unplug the grinder
2. Remove the two Phillips head
screws from the top of worklight
3. Remove worklignt housing.
4. While gently pushing in bulb, turn
bulb to left to release.
5. Place new bulb into bulb
receptacle and gently push in
while turning to the right until bulb is fully seated.
6. Reinstall the worklight housing using the two Phillips head screws.
NOTE: To avoid the risk of fire, always use a BA15S P21W/12V bulb.
</ WEAR PROPER APPAREL Do not wear loose clothing, gloves, neckties, rings,
bracelets, or other jewelry which may get caught in moving parts. Nonslip
footwear is recommended. Wear protective hair covering to contain long hair.
V ALWAYS USE SAFETY GLASSES. Also use face or dust mask if cutting
operation is dusty. Everyday eyeglasses only have impact resistant lenses,
they are NOT safety glasses.
*/ SECURE WORK. Use clamps or a vise to hold work when practical. 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 best and
safest performance. Follow instructions for lubricating and changing
+/ DISCONNECT TOOLS. When not in use, before servicing, or when changing
attachments, grinding wheels, etc., all tools should be disconnected.
•J REDUCE THE RISK OF UNINTENTIONAL STARTING. Be sure switch is off
when plugging in any tool.
*/ NEVER STAND ON TOOL. Serious injury could occur if the tool is tipped or if
the cutting tool is unintentionally contacted.
S 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.
•/ PROTECT YOUR LUNGS. Wear a face or dust mask if the grinding operation is
«✓ PROTECT HEARING. Wear hearing protection during extended periods of
S DO NOT ABUSE’ CORD. Never yank cord to disconnect from receptacle. Keep
cord from heat, oil, and sharp edges.
INSPECT TOOL ICORDS PERIODICALLY. If damaged, have the cord repaired by
a qualified servi ce technician at an authorized service facility. The conductor
with insulation having an outer surface that is green with or without yellow
stripes is the equipment-grounding conductor. If repair or replacement of the
electric cord or plug is necessary, do not connect the equipment-grounding
conductor to a live terminal. Repair or replace a damaged or worn cord
immediately. Stay constantly aware of cord location and keep it well away
from the rotating grinding wheels.
DIRECTION OF FEED. Feed work into a blade or cutter against the direction
of rotation of the blade or cutter only.
V NEVER LEAVE TOOL RUNNING UNAHENDED. TURN POWER OFF. Don’t leave
tool until it comes to a complete stop.
</ INSPECT EXTENSION CORDS PERIODICALLY and replace if damaged.
*/ DO NOT USE TOOL IF SWITCH DOES NOT TURN IT ON AND OFF. Have
defective switches replaced by an authorized service center.
*✓ USE ONLY CORRECT WHEELS. Do not use wheels with incorrect size holes.
Never use wheel washers or wheel bolts that are defective or incorrect. The
maximum wheel capacity of your grinder is 8in.
*/ NEVER TOUCH WHEEL or other moving parts during use.
</ DO NOT OPERATE A TOOL WHILE UNDER THE INFLUENCE OF DRUGS,
ALCOHOL, OR ANY MEDICATION.
WHEN SERVICING use only identical replacement parts. Use of any other
parts may create a hazard or cause product damage.
USE ONLY RECOMMENDED ACCESSORIES listed in this manual or
addendums. Use of accessories that are not listed may cause the risk of
personal injury. Instructions for safe use of accessories are included with the
</ DOUBLE CHECK ALL SETUPS. Make sure wheel is tight and not making
contact with workpiece before connecting to power supply.
SPECIFIC SAFETY RULES FOR BENCH GRINDER
«/ NEVER reach to pick up a workpiece, a piece of scrap, or anything else that
is in or near the grinding path of the wheel.
V AVOID AWKWARD OPERATIONS AND HAND POSITIONS where a sudden
slip could cause your hand to move into the wheel. Always make sure you
have good balance.
Before each use, inspect the grinder, switch and cord for damage. Check for
damaged, missing, or worn parts. Check for loose screws, misalignment or
binding of moving parts, or any other conditions that may affect the operation.
If abnormal vibration or noise occurs, turn the tool off immediately and have the
problem corrected before further use.
Before cleaning or performing any maintenance, the tool should be unplugged
from the power supply. Using compressed air may be the most effective
cleaning method. Always wear safety goggles when cleaning tools with
A WARNING: Do not let brake fluids, gasoline, petroleum-based products, penetrating
oil, etc., come in contact with plastic parts. They contain chemicals that
can damage, weaken or destroy plastic.
A WARNING’.When servicing use only identical replacement parts. Use of any
other parts rtiay create a hazard or cause product damage.
A WARNING:Use only accessories that are recommended by the manufacturer
for the model. Accessories that may be suitable for one tool may become hazardous
when used on another tool.
A WARNING:Maintain tools with care. Keep cutting tools sharp and clean. Properly
maintained tools with sharp cutting edges are less likely to bind and are
easier to control.
A WARNING:Check extension cords before each use. If damaged, replace immediately.
Never use tool with a damaged cord.
A WARNiNG:To ensure safety and reliability, all repairs should be performed by
a qualified service technician.
WHEEL REPLACEMENT (Fig.9)
If you must replace a grinding wheel, be sure to obtain one with a safe rated
speed at least as high as the “no load speed” RPM marked on the data plate of
the grinder and which is marked to comply with ANSI B7.1,
ON/OFF SWITCH (Fig.7)
Your bench grinder is equipped with
a switch that has a built-in locking
feature. This feature is intended to
prevent unauthorized and possible
hazardous use by children and
TO TURN YOUR BENCH GRINDER ON:
With the switch key inserted into the
switch, lift the switch button to turn
TO TURN YOUR BENCH GRINDER OFF:
Press the switch button down to turn
TO LOCK YOUR BENCH GRINDER:
With the grinder turned OFF, pull the
switch key from the switch and store
in a safe, secure location.
Your bench grinder is equipped with
a separate On/Off switch for lights.
SHARPENING TWIST DRILL BITS
Drill bits are best sharpened on a
sharpening jig (not included),but some
sharpening can be done on your
bench grinder. Begin on one side of
the point at the existing angle, twist
the bit while maintaining contact with
the grinding surface. Sharpen only the tip.
This technique requires considerable practice, so take your time and make a
few “dry runs” first with the grinder off. Be sure to maintain the original cutting
edge angle as this is important to the efficiency of your bits. One tool rest has
a V-groove angled to fit 118° drill bits.
SHARPENING CHISELS AND SCREWDRIVER BLADES
When sharpening chisels and screwdrivers, the tool rest should support the
blade at the correct angle against the wheel.
+/ NEVER stand or have any part of your body in line with the path of the wheel.
s/ DO NOT TURN MOTOR SWITCH ON AND OFF RAPIDLY. This could cause the
wheel to loosen and could create a hazard. Should this ever occur, stand
clear and allow the wheel to come to a complete stop. Disconnect your
grinder from the power supply and securely retighten the wheel nut.
S USE ONLY FLANGES furnished with this bench grinder.
s/ IF ANY PART OF THIS GRINDER IS MISSING or should break, bend, or fail in
any way, or should any electrical component fail to perform properly, shut off
the power switch, remove the machine plug from the power source and have
damaged, missing, or failed parts replaced before resuming operation.
V MAKE SURE THE GRINDER IS SECURELY MOUNTED as described in the
operating instructions before connecting the tool to a power supply.
<y DO NOT OVERTIGHTEN WHEEL NUT. Excessive tightening can cause the
wheel to crack during operation.
</ ALWAYS USE THE GRINDER’S WHEEL GUARDS AND SAFETY SHIELDS.
V INSPECT GRINDING WHEEL for visible defects. Check the wheel for fissures
and cracks, and test for normal operation prior to use. Replace cracked
ADJUST distance between wheel and tool rest to maintain 1/16 in. or less
separation as the diameter of the wheel decreases with use. The value of
separation used in the marking is to be the separation recommended by the
manufacturer but shall not be more than 1/8 in.
V ALWAYS EASE THE WORKPIECE AGAINST ABRASIVE WHEEL when starting
to grind. A harsh impact can break the wheel. Use light pressure when
starting to grind; too much pressure on a cold wheel can cause the wheel to
*/ NEVER START THE GRINDER when the wheel is in contact with the
«✓ SECURE WORK. Always hold workpiece firmly against the tool rest.
S DO NOT USE THE BENCH GRINDER if the flange nut or clamp nut is missing
or if the spindle shaft is bent.
V FREQUENTLY clean grinding dust from beneath grinder.
AwARNING: Some dust created by power sanding, sawing, grinding, drilling,
and other construction activities contains chemicals known to cause
cancer, birth defects or other reproductive harm. Some examples of these
• Lead from lead-based paints,
• Crystalline silica from bricks and cement and other masonry products, and
• Arsenic and chromium from chemically treated lumber.
Your risk from these exposures varies, depending on how often you do this type
of work. To reduce your exposure to these chemicals: work in a well ventilated
area, and work with approved safety equipment, such as those dust masks that
are specially designed to filter out microscopic particles.
Use only 3-wire extension cords that have 3-prong grounding plugs and
3-pole receptacles that accept the tool’s plug. When using a power tool at a
considerable distance from the power source, use an extension cord heavy
enough to carry the current that the tool will draw. An undersized extension
cord will cause a drop in line voltage, resulting in a loss of power and causing
the motor to overheat. Use the chart provided below to determine the minimum
wire size required in an extension cord. Only round jacketed cords listed by
Underwriter’s Laboratories (UL) should be used.
“Ampere rating (on tool data plate)
0-2.0 2.1-3.4 3.5-5.0 5.1-7.0 7.1-1 2.0 12.1-16.0
Cord Length Wire Size (A.W.G.)
25’ 16 16 16 16 14 14
50’ 16 16 16 14 14 12
100’ 16 16 14 12 10 —
“Used on 12 gauge – 20 amp circuit.
NOTE: AWG = American Wire Gauge
When tool is used outdoors, use an extension cord that is designed for outdoor
use. This is indicated by the letters “WA” on the cord’s jacket.
Before using an extension cord, inspect it for loose or exposed wires and cut or
4. Place the machine on the workbench and insert a bolt with a washer
through the mounting holes in the base into each of the holes drilled in the
workbench. Make sure the protruding length X (see figure) is at least 5/8″
for each of the bolts used.
5. Place a nut on each of the bolts and securely tighten the nuts.
JLWARNING: Do not allow familiarity with tools to make you careless. Remember
that a careless fraction of a second is sufficient to inflict serious injury.
I WARNING: Always wear safety goggles or safety glasses with side shields
when operating power tools. Failure to do so could result in objects being
thrown into your eyes resulting in possible serious injury.
A WARNING: Do not use any attachments or accessories not recommended
by the manufacturer of this tool. The use of attachments or accessories not
recommended can result in serious personal injury.
To be efficient and work as designed, your tools should be kept sharp. Dull tools
can cause accidents. Bench Grinders are ideal for sharpening tools such as
chisels, planer blades, scissors, etc., and for removing rust or corrosion.
AwARNING: Never sharpen or grind anything made of aluminum, brass, or
Grinders remove material rapidly, so pressure is the key to efficient grinding.
The proper way to sharpen a tool and avoid overheating is:
1. Keep the object in constant motion, moving it at an even pace.
2. Never force a tool against the grinding wheel.
3. Keep the tool cool by using either the coolant tray or a pan of water.
4. The grinding wheel should rotate “into” the object being sharpened.
NOTE: Excessive pressure may damage the tool, cause the motor to overheat,
and prematurely wear down the grinding wheel.
A WARNING: Excessive pressure on a cold wheel may cause the wheel to
USING COOLANT TRAY (Fig.7)
The built-in coolant tray allows you to cool overheated workpieces. Simply pull
out the tray and fill with the appropriate coolant.
2. Attach the eyeshield assembly(C) to the wheel guard using a flat washer(l)
and eyeshield knob(H).
NOTE: The eyeshield assembly w/ magnifier mounts on the left side.
■ WARNING: The use of attachment or accessories from other types of
grinder might be hazardous and could cause serious personal injury.
MOUNTING WORK REST(Fig. 5)
1. Turn off and unplug the grinder
2. Using the carriage bolt(F), flat
washer(l) and tool rest knob(G),
attach the tool rest(E) to the
inside of the wheel guard as shown.
NOTE: The grooved tool rest mounts on the left side.
NOTE: Adjust the distance between the wheel and the tool rest to maintain
1/16 in. or less separation as the diameter of the wheel decreases with use.
AwARNING: Always make sure your bench grinder is securely mounted to a
workbench. Failure to do so could result in an accident or possibly serious
MOUNTING GRINDER TO WORKBENCH (Fig.6)
If grinder is to be used in a
permanent location, it should be
fastened securely to a firm supporting
surface, such as a workbench with
NOTE: Hardware not included.
1. Turn off and unplug the grinder
2. Mark the position of the four
mounting holes provided in the
base of the machine on the
3. Drill a hole at each of the marked positions.
AwARNING: Keep the extension cord clear of the working area. Position
the cord so that it will not get caught on lumber, tools or other obstructions
while you are working with a power tool. Failure to do so can result in serious
AwARNING: Check extension cords before each use. If damaged replace
immediately. Never use tool with a damaged cord since touching the damaged
area could cause electrical shock resulting in serious injury.
This tool is powered by a precision built electric motor. It should be connected
to a power supply that is 120 volts, 60 Hz, AC only (normal household current).
Do not operate this tool on direct current (DC). A substantial voltage drop will
cause a loss of power and the motor will overheat. If the grinder does not
operate when plugged into an outlet, double check the power supply.
SPEED AND WIRING
The no-load speed of this tool is approximately 3560 rpm. This speed is not
constant and decreases under a load or with lower voltage. For voltage, the
wiring in a shop is as important as the motor’s horsepower rating. A line
intended only for lights cannot properly carry a power tool motor. Wire that is
heavy enough for a short distance will be too light for a greater distance. A line
that can support one power tool may not be able to support two or three tools.
1. All grounded, cord-connected tools:
*/ In the event of a malfunction or breakdown,
grounding provides a path of least
resistance for electric current to reduce the
risk of electric shock. This tool is equipped
with an electric cord having an equipmentgrounding
conductor and a grounding plug.
The plug must be plugged into a matching
outlet that is properly installed and
grounded in accordance with all local codes
Do not modify the plug provided. If it will not fit the outlet, have the proper
outlet installed by a qualified electrician.
«/ Improper connection of the equipment-grounding conductor can result
in a risk of electric shock. The conductor with insulation having an outer
surface that is green with or without yellow stripes is the equipmentgrounding
conductor. If repair or replacement of the electric cord or plug
is necessary, do not connect the equipment-grounding conductor to a live
«/ Check with a qualified electrician or service personnel if the grounding
instructions are not completely understood, or if in doubt as to whether the
tool is properly grounded.
Repair or replace a damaged or worn cord immediately.
The following items are to be provided in the shipping box: (Fig.2)
A. Grinder(not shown)
B. Eyeshield assembly w/ magnifying lens, left
C. Eyeshield assembly, right
D. Tool rest, left
E. Tool rest, right
F. Carriage bolt(2)
G. Tool rest knob(2)
H. Eyeshield knob(2)
I. Flat washer(4)
KNOW THE BENCH GRINDER (Fig. 3)
The machine is intended for sharpening tools such as chisels, planer blades,
scissors, etc., and for removing rust or corrosion.
/t wARNING: Do not allow familiarity with the grinder to cause carelessness.
Remember that a careless fraction of a second is sufficient enough to inflict
1. On/Off switch with key
2. Worklight switch
3. Coolant tray
4. Right tool rest
5. Left tool rest (grooved)
6. Left safety shield (w/
7. Right safety shield
8. Left wheel guard
10. Grinding wheel
11. Right wheel guard
ASSEMBLY AND ADJUSTMENTS
/^ WARNING: Remove the bench grinder from the carton and examine it carefully.
Do not dispose of carton or any packaging material until all parts are
^ WARNING: To avoid injury, ALWAYS
turn the tool off and disconnect the
grinder from the power outlet before
installing or changing the grinding
MOUNTING SAFETY SHIELD
1. Turn off and unplug the grinder