MODEL G0686
LARGE DRILL BIT GRINDER
OWNER'S MANUAL
(For models manufactured since 01/15)
COPYRIGHT © MAY, 2009 BY GRIZZLY INDUSTRIAL, INC., REVISED MARCH, 2019 (MN)
WARNING : NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#TS11442 PRINTED IN TAIWAN
V2.03.19
This manual provides critical safety instructions on the proper setup,
operation, maintenance, and service of this machine/tool. Save this
document, refer to it often, and use it to instruct other operators.
Failure to read, understand and follow the instructions in this manual
may result in fire or serious personal injury—including amputation,
electrocution, or death.
The owner of this machine/tool is solely responsible for its safe use.
This responsibility includes but is not limited to proper installation in
a safe environment, personnel training and usage authorization,
proper inspection and maintenance, manual availability and comprehension, application of safety devices, cutting/sanding/grinding tool
integrity, and the usage of personal protective equipment.
The manufacturer will not be held liable for injury or property damage
from negligence, improper training, machine modifications or misuse.
Some dust created by power sanding, sawing, grinding, drilling, and
other construction activities contains chemicals known to the State
of California to cause cancer, birth defects or other reproductive
harm. Some examples of these chemicals are:
• Lead from lead-based paints.
• Crystalline silica from bricks, cement and other masonry products.
• 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.
Table of Contents
INTRODUCTION ............................................... 2
Contact Info.................................................... 2
Machine Description ...................................... 2
Manual Accuracy ........................................... 2
Identification ................................................... 3
Controls & Components ................................. 4
Machine Data Sheet ...................................... 5
SECTION 1: SAFETY ....................................... 7
Safety Instructions for Machinery .................. 7
Additional Safety for Drill Bit Grinders ........... 9
SECTION 2: POWER SUPPLY ...................... 10
SECTION 3: SETUP ....................................... 12
Unpacking .................................................... 12
Inventory ...................................................... 12
Needed for Setup ......................................... 12
Hardware Recognition Chart ....................... 13
Cleanup ........................................................ 14
Site Considerations ...................................... 15
Assembly ..................................................... 16
Test Run ...................................................... 17
SECTION 4: OPERATIONS ........................... 18
Grinding Tips................................................ 18
Drill Bit Terminology ..................................... 19
Wheel Care .................................................. 19
Wheel Inspection ......................................... 20
Grinding Wheels .......................................... 21
Grinding Cutting Edge & Point Angle .......... 22
SECTION 6: MAINTENANCE ......................... 28
Schedule ...................................................... 28
Cleaning & Protecting .................................. 28
Wheel Dressing............................................ 28
Wheel Storage ............................................. 28
Replacing Light Bulb .................................... 28
Lubrication ................................................... 29
SECTION 7: SERVICE ................................... 30
Troubleshooting ........................................... 30
Motor Brushes.............................................. 31
SECTION 8: WIRING ...................................... 32
Wiring Safety Instructions ............................ 32
Wiring Diagram ............................................ 33
SECTION 9: PARTS ....................................... 34
Base ............................................................. 34
Motor & Wheel ............................................. 35
Jig Assembly ................................................ 36
Pivot Base & Carriage ................................. 37
Labels & Cosmetics ..................................... 38
WARRANTY & RETURNS ............................. 41
SECTION 5: ACCESSORIES ......................... 27
INTRODUCTION
We stand behind our machines! If you have questions or need help, contact us with the information
below. Before contacting, make sure you get the
serial number
from the
machine ID label. This will help us help you faster.
We want your feedback on this manual. What did
you like about it? Where could it be improved?
Please take a few minutes to give us feedback.
Email: manuals@grizzly.com
We are proud to provide a high-quality owner’s
manual with your new machine!
We
instructions, specifications, drawings, and photographs
in this manual. Sometimes we make mistakes, but
our policy of continuous improvement also means
that
you receive is
slightly different than shown in the manual
If you find this to be the case, and the difference
between the manual and machine leaves you
confused or unsure about something
check our
website for an updated version. W
current
manuals and
on our web-
site at
Alternatively, you can call our Technical Support
for help. Before calling, make sure you write down
the
from
the machine ID label (see below). This information
is required for us to provide proper tech support,
and it helps us determine if updated documentation is available for your machine.
Contact Info
and manufacture date
Grizzly Technical Support
1815 W. Battlefield
Springfield, MO 65807
Phone: (570) 546-9663
Email: techsupport@grizzly.com
Grizzly Documentation Manager
P.O. Box 2069
Bellingham, WA 98227-2069
Manual Accuracy
made every effort to be exact with the
sometimes the machine
.
,
e post
manual updates for free
www.grizzly.com.
Manufacture Date and Serial Number
Machine Description
The Model G0686 is designed to sharpen the cutting edges and point angle of 2-flute, twisted large
drill bits from
5
⁄8" to 2" in diameter.
Manufacture Date
Serial Number
-2-
Model G0686 (Mfd. Since 01/15)
Identification
To reduce your risk of
serious injury, read this
entire manual BEFORE
LED Work Lamp
Motor
ON/OFF
Switch
Work Lamp
Switch
Motor
Wheel Guard
Grinding
Wheel
Pivot
Handle
Stop Rod
(1 of 2)
Tailstock*
Bit Carrier*
Jig Base*
Carriage
Carriage
Handwheel
Model G0686 (Mfd. Since 01/15)
Pivot Base
Figure 1. Model G0686 identification.
using machine.
* The tailstock, bit carrier, and jig base
are components of the jig assembly.
-3-
Controls &
Components
The jig assembly holds the drill bit at the selected height and horizontal/vertical angles during
operation.
Refer to Figure 2 and the descriptions below
to become familiar with the jig components and
controls.
Height Scale
Tailstock
Height
Set Screw
& Lock Lever
With the use of the pivot lever, the pivot base
moves the drill bit in a precise path across the
cutting edge of the grinding wheel.
The jig assembly and pivot base are mounted on
the carriage, which is moved toward or away from
the wheel with the use of the handwheel.
Refer to Figure 3 and the following descriptions to
become familiar with the pivot base and carriage
controls.
Stop Rod Lock Knob
Carriage
Handwheel
Flute
Pin
Angle
Scale
Bit Carrier
Figure 2. Jig assembly components and
controls.
Height Scale: Displays the correct setting for the
bit's diameter so that its center point is aligned
with the wheel center point.
Height Lock Lever: Secures the bit carrier at the
selected height and vertical angle.
Height Set Screw: Aligns the bit center point with
the wheel center point.
Flute Pin: Keeps the bit from rotating in the carrier from the rotational force of the wheel.
Pivot
Lever
Stop Rod
(1 of 2)
Figure 3. Pivot base and carriage controls.
Stop Rod Lock Knob: Secures the stop rod in
place.
Carriage Handwheel: Moves the drill bit toward
or away from the grinding wheel.
Pivot Lever: Moves the drill bit across the cutting
edge of the wheel in a precise path.
Stop Rod: When properly adjusted, safely limits
the travel of the drill bit across the wheel.
Tailstock: Keeps the bit from moving away from
the wheel during operation.
Angle Scale: Displays the combined angle of
both bit point angles that will be cut.
Bit Carrier: Keeps the bit steady with a V-type
trough configuration.
-4-
Model G0686 (Mfd. Since 01/15)
4.5A
Machine Data Sheet
Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901
MODEL G0686
LARGE DRILL BIT GRINDER
Product Dimensions:
Weight ............................................................................................................................................................................. 75 lbs.
Width (side-to-side) x Depth (front-to-back) x Height .................................................................................15-1/2 x 25 x 19 in.
Footprint (Length/Width) ............................................................................................................................................11 x 20 in.
Shipping Dimensions:
Type ................................................................................................................................................................... Cardboard Box
Content .......................................................................................................................................................................... Machine
Weight .............................................................................................................................................................................. 77 lbs.
Length x Width x Height ...............................................................................................................................16-1/2 x 26 x 18 in.
Must Ship Upright .................................................................................................................................................................Yes
Electrical:
Power Requirement ........................................................................................................................ 110V, Single-Phase, 60 Hz
Full-Load Current Rating .....................................................................................................................................................
Minimum Circuit Size ........................................................................................................................................................... 15A
Connection Type ..................................................................................................................................................... Cord & Plug
Power Cord Included ............................................................................................................................................................Yes
Power Cord Length ...............................................................................................................................................................5 ft.
Power Cord Gauge .......................................................................................................................................................16 AWG
Plug Included ........................................................................................................................................................................Yes
Included Plug Type ..............................................................................................................................................................5-15
Switch Type ......................................................................................................................................................ON/OFF Rocker
Motor:
Main
Horsepower ............................................................................................................................................................1/2 HP
Phase .......................................................................................................................................................... Single-Phase
Amps ......................................................................................................................................................................... 4.5A
Speed ...............................................................................................................................................................6800 RPM
Type ............................................................................................................................................................. DC Universal
Number Of Speeds ..........................................................................................................................................................1
Power Transfer ............................................................................................................................................... Direct Drive
Bearings .....................................................................................................................Shielded and Permanently Sealed
Main Specifications:
Operation Information
Drill Bit Capacity ................................................................................................................................................5/8 – 2 in.
Miter Angle ................................................................................................................................................. 50 – 150 deg.
Grinder Wheel Sizes .................................................................... 60mm O.D. x 35mm I.D. x 65mm W. x M14-1.5 Bore
.....................................................................................................70mm O.D. x 54mm I.D. x 65mm W. x M14-1.5 Bore
Model G0686 (Mfd. Since 01/15)
-5-
Construction
Body ..........................................................................................................................................................................Steel
Slides .........................................................................................................................................................................Steel
Guide .........................................................................................................................................................................Steel
Paint ......................................................................................................................................................... Powder Coated
Other Specifications:
Country of Origin ............................................................................................................................................................. Taiwan
Warranty ........................................................................................................................................................................... 1 Year
Approximate Assembly & Setup Time ............................................................................................................................30 min.
Serial Number Location ..................................................................................................................................Machine ID Label
ISO 9001 Factory ................................................................................................................................................................... No
Certified by a Nationally Recognized Testing Laboratory (NRTL) ......................................................................................... No
Features: (Title Case)
Spiral Point Grinding Capability
Prism Clamp for Drill Grinding
Calibrated Infeed Handwheel
2-Axis Adjustable Center
16" Drill Tray
LED Work Light
-6-
Model G0686 (Mfd. Since 01/15)
SECTION 1: SAFETY
For Your Own Safety, Read Instruction
Manual Before Operating This Machine
The purpose of safety symbols is to attract your attention to possible hazardous conditions.
This manual uses a series of symbols and signal words intended to convey the level of importance of the safety messages. The progression of symbols is described below. Remember that
safety messages by themselves do not eliminate danger and are not a substitute for proper
accident prevention measures. Always use common sense and good judgment.
Indicates an imminently hazardous situation which, if not avoided,
WILL result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided,
COULD result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided,
MAY result in minor or moderate injury. It may also be used to alert
against unsafe practices.
Alerts the user to useful information about proper operation of the
NOTICE
machine to avoid machine damage.
Safety Instructions for Machinery
OWNER’S MANUAL. Read and understand this
owner’s manual BEFORE using machine.
TRAINED OPERATORS ONLY. Untrained operators have a higher risk of being hurt or killed.
Only allow trained/supervised people to use this
machine. When machine is not being used, disconnect power, remove switch keys, or lock-out
machine to prevent unauthorized use—especially
around children. Make your workshop kid proof!
DANGEROUS ENVIRONMENTS. Do not use
machinery in areas that are wet, cluttered, or have
poor lighting. Operating machinery in these areas
greatly increases the risk of accidents and injury.
MENTAL ALERTNESS REQUIRED. Full mental
alertness is required for safe operation of machinery. Never operate under the influence of drugs or
alcohol, when tired, or when distracted.
ELECTRICAL EQUIPMENT INJURY RISKS.
You can be shocked, burned, or killed by touching
live electrical components or improperly grounded
machinery. To reduce this risk, only allow qualified
service personnel to do electrical installation or
repair work, and always disconnect power before
accessing or exposing electrical equipment.
DISCONNECT POWER FIRST.
nect machine from power supply BEFORE making adjustments, changing tooling, or servicing
machine. This prevents an injury risk from unintended startup or contact with live electrical components.
EYE PROTECTION. Always wear ANSI-approved
safety glasses or a face shield when operating or
observing machinery to reduce the risk of eye
injury or blindness from flying particles. Everyday
eyeglasses are NOT approved safety glasses.
Always discon-
Model G0686 (Mfd. Since 01/15)
-7-
WEARING PROPER APPAREL. Do not wear
clothing, apparel or jewelry that can become
entangled in moving parts. Always tie back or
cover long hair. Wear non-slip footwear to reduce
risk of slipping and losing control or accidentally
contacting cutting tool or moving parts.
HAZARDOUS DUST. Dust created by machinery
operations may cause cancer, birth defects, or
long-term respiratory damage. Be aware of dust
hazards associated with each workpiece material. Always wear a NIOSH-approved respirator to
reduce your risk.
HEARING PROTECTION. Always wear hearing protection when operating or observing loud
machinery. Extended exposure to this noise
without hearing protection can cause permanent
hearing loss.
REMOVE ADJUSTING TOOLS. Tools left on
machinery can become dangerous projectiles
upon startup. Never leave chuck keys, wrenches,
or any other tools on machine. Always verify
removal before starting!
USE CORRECT TOOL FOR THE JOB. Only use
this tool for its intended purpose—do not force
it or an attachment to do a job for which it was
not designed. Never make unapproved modifications—modifying tool or using it differently than
intended may result in malfunction or mechanical
failure that can lead to personal injury or death!
AWKWARD POSITIONS. Keep proper footing
and balance at all times when operating machine.
Do not overreach! Avoid awkward hand positions
that make workpiece control difficult or increase
the risk of accidental injury.
CHILDREN & BYSTANDERS. Keep children and
bystanders at a safe distance from the work area.
Stop using machine if they become a distraction.
GUARDS & COVERS. Guards and covers reduce
accidental contact with moving parts or flying
debris. Make sure they are properly installed,
undamaged, and working correctly BEFORE
operating machine.
FORCING MACHINERY. Do not force machine.
It will do the job safer and better at the rate for
which it was designed.
NEVER STAND ON MACHINE. Serious injury
may occur if machine is tipped or if the cutting
tool is unintentionally contacted.
STABLE MACHINE. Unexpected movement during operation greatly increases risk of injury or
loss of control. Before starting, verify machine is
stable and mobile base (if used) is locked.
USE RECOMMENDED ACCESSORIES. Consult
this owner’s manual or the manufacturer for recommended accessories. Using improper accessories will increase the risk of serious injury.
UNATTENDED OPERATION. To reduce the
risk of accidental injury, turn machine OFF and
ensure all moving parts completely stop before
walking away. Never leave machine running
while unattended.
MAINTAIN WITH CARE. Follow all maintenance
instructions and lubrication schedules to keep
machine in good working condition. A machine
that is improperly maintained could malfunction,
leading to serious personal injury or death.
DAMAGED PARTS. Regularly inspect machine
for damaged, loose, or mis-adjusted parts—or
any condition that could affect safe operation.
Immediately repair/replace BEFORE operating
machine. For your own safety, DO NOT operate
machine with damaged parts!
MAINTAIN POWER CORDS. When disconnecting cord-connected machines from power, grab
and pull the plug—NOT the cord. Pulling the cord
may damage the wires inside. Do not handle
cord/plug with wet hands. Avoid cord damage by
keeping it away from heated surfaces, high traffic
areas, harsh chemicals, and wet/damp locations.
EXPERIENCING DIFFICULTIES. If at any time
you experience difficulties performing the intended operation, stop using the machine! Contact our
Technical Support at (570) 546-9663.
-8-
Model G0686 (Mfd. Since 01/15)
Additional Safety for Drill Bit Grinders
necktie or loose clothing. Keep long hair away from
Move these types of materials a safe distance away.
The primary risks of operating a Drill Bit Grinder are as follows: You can be blinded or killed
by flying debris created by a chipped or damaged grinding wheel. Your fingers can be cut or
amputated by the rotating grinding wheel. You can also suffer crushing injuries from getting
hair, loose clothing, or jewelry entangled in the wheel. To reduce your risk of serious injury when
operating this machine, completely heed and understand the following.
PERFORM WHEEL INSPECTION. Before
installing a grinding wheel, visually check it for
cracks, chips, nicks or dents in the wheel surface.
Additionally, perform a “ring” test. Do not use the
wheel if it fails inspection.
USE UNDAMAGED WHEELS. Never use a wheel
that has been dropped or received a heavy blow,
even if there is no obvious damage.
SAFELY START UP GRINDER. To protect yourself, always stand to the side of the grinder until the
wheel reaches full speed. Allow it to run for at least
one minute before grinding. If a wheel is damaged,
it will usually fly apart shortly after startup.
USE CORRECT SPEED RATING. Wheels operated at a faster speed than rated for may break or
burst. Before mounting a new wheel, be sure wheel
RPM rating is equal to or higher than speed of
grinder. Never use unmarked wheels.
USE CORRECT WHEEL BORE. Only use wheel
with same bore as machine arbor.
AVOID TOUCHING MOVING WHEEL. Be aware
where your hands are relative to the grinding
wheel, and keep them away from wheel while
grinding.
USE DRILL BIT JIG. Always make sure the drill bit
is properly positioned in the jig, and the jig is firmly
secured to the base, and all locks are tight before
turning the machine ON.
DRY-GRIND ONLY. To avoid the risk of electrocution, do not use fluids of any kind with this
machine. This grinder is designed to perform drygrinding only!
WEAR PROPER CLOTHING. Do not wear gloves,
rotating grinding spindle.
WEAR PROPER PPE. Grinding ejects small particles at a high rate of speed. These particles
can cause blindness, skin injuries, or respiratory
damage. ALWAYS wear approved clothing, safety
goggles or safety glasses with side shields and
face shield, and a respirator appropriate for the
type of grinding to be done.
NEWLY GROUND DRILL BITS WILL BE HOT.
Drill bits can be sharp and get hot during grinding operations. Use leather gloves or shop rags to
protect your hands when installing or removing drill
bits. Remove the gloves before operating.
REDUCE RISK OF FIRE AND EXPLOSIONS.
This machine creates a shower of hot sparks that
can ignite explosive or flammable materials nearby.
PROPERLY MAINTAIN MACHINE. Keep machine
in proper working condition to help ensure all components work as intended and function safely.
Perform routine inspections and all necessary
maintenance, as indicated in owner’s manual.
Never operate machine with damaged or worn
parts that can break during operation.
Model G0686 (Mfd. Since 01/15)
-9-
SECTION 2: POWER SUPPLY
Before installing the machine, consider the availability and proximity of the required power supply
circuit. If an existing circuit does not meet the
requirements for this machine, a new circuit must
be installed. To minimize the risk of electrocution,
fire, or equipment damage, installation work and
electrical wiring must be done by an electrician or
qualified service personnel in accordance with all
applicable codes and standards.
or equipment damage
may occur if machine is
not properly grounded
and connected to power
The full-load current rating is the amperage a
machine draws at 100% of the rated output power.
On machines with multiple motors, this is the
amperage drawn by the largest motor or sum of all
motors and electrical devices that might operate
at one time during normal operations.
The full-load current is not the maximum amount
of amps that the machine will draw. If the machine
is overloaded, it will draw additional amps beyond
the full-load rating.
If the machine is overloaded for a sufficient length
of time, damage, overheating, or fire may result—
especially if connected to an undersized circuit.
To reduce the risk of these hazards, avoid overloading the machine during operation and make
sure it is connected to a power supply circuit that
meets the specified circuit requirements.
For your own safety and protection of
Note: Circuit requirements in this manual apply to
a dedicated circuit—where only one machine will
be running on the circuit at a time. If machine will
be connected to a shared circuit where multiple
machines may be running at the same time, consult an electrician or qualified service personnel to
ensure circuit is properly sized for safe operation.
A power supply circuit includes all electrical
equipment between the breaker box or fuse panel
in the building and the machine. The power supply circuit used for this machine must be sized to
safely handle the full-load current drawn from the
machine for an extended period of time. (If this
machine is connected to a circuit protected by
fuses, use a time delay fuse marked D.)
This machine is prewired to operate on a power
supply circuit that has a verified ground and meets
the following requirements:
process. DO NOT connect to power until
Availability
Electrocution, fire, shock,
Serious injury could occur if you connect
machine to power before completing setup
instructed later in this manual.
110V Circuit Requirements
Nominal Voltage .................... 110V, 115 V, 120V
Cycle .......................................................... 60 Hz
Phase ........................................... Single-Phase
Power Supply Circuit ......................... 15 Amps
supply.
Full-Load Current Rating
Full-Load Current Rating at 110V .....4.5 Amps
-10 -
property, consult an electrician if you are
unsure about wiring practices or electrical
codes in your area.
Model G0686 (Mfd. Since 01/15)
Improper connection of the equipment-grounding
wire can result in a risk of electric shock. The
wire with green insulation (with or without yellow
stripes) is the equipment-grounding wire. If repair
or replacement of the power cord or plug is necessary, do not connect the equipment-grounding
wire to a live (current carrying) terminal.
Check with a qualified electrician or service personnel if you do not understand these grounding
requirements, or if you are in doubt about whether
the tool is properly grounded. If you ever notice
that a cord or plug is damaged or worn, disconnect it from power, and immediately replace it with
a new one.
We do not recommend using an extension cord
with this machine.
cord, only use it if absolutely necessary and only
on a temporary basis.
Extension cords cause voltage drop, which can
damage electrical components and shorten motor
life. Voltage drop increases as the extension cord
size gets longer and the gauge size gets smaller
(higher gauge numbers indicate smaller sizes).
Any extension cord used with this machine must
be in good condition and contain a ground wire
and matching plug/receptacle. Additionally, it must
meet the following size requirements:
Grounding & Plug Requirements
it will not fit the outlet, have a qualified
electrician install the proper outlet with a
This machine MUST be grounded. In the event
of certain malfunctions or breakdowns, grounding
reduces the risk of electric shock by providing a
path of least resistance for electric current.
This machine is equipped with a power cord that
has an equipment-grounding wire and a grounding
plug. Only insert plug into a matching receptacle
(outlet) that is properly installed and grounded in
accordance with all local codes and ordinances.
DO NOT modify the provided plug!
GROUNDED
5-15 RECEPTACLE
Grounding Pin
5-15 PLUG
Extension Cords
If you must use an extension
Neutral Hot
Figure 4. Typical 5-15 plug and receptacle.
SHOCK HAZARD!
Two-prong outlets do not meet the grounding
requirements for this machine. Do not modify
or use an adapter on the plug provided—if
verified ground.
Model G0686 (Mfd. Since 01/15)
Minimum Gauge Size ...........................14 AWG
Maximum Length (Shorter is Better).......50 ft.
-11-
SECTION 3: SETUP
This machine was carefully packaged for safe
transport. When unpacking, separate all enclosed
items from packaging materials and inspect them
for shipping damage.
,
please
IMPORTANT:
you are completely satisfied with the machine and
have resolved any issues between Grizzly or the
shipping agent. You MUST have the original pack-
aging to file a freight claim. It is also extremely
helpful if you need to return your machine later.
The following is a list of items shipped with your
machine. Before beginning setup, lay these items
out and inventory them.
If any non-proprietary parts are missing (e.g. a
nut or a washer), we will gladly replace them; or
for the sake of expediency, replacements can be
obtained at your local hardware store.
This machine presents
serious injury hazards
to untrained users. Read
through this entire manual to become familiar with
the controls and operations before starting the
machine!
Box 1 (Figure 5) Qty
Wear safety glasses during
the entire setup process!
This machine and its components are very heavy.
Get lifting help and use
safe lifting and moving
methods when handling
heavy machinery.
A. G0686 Grinder (Not Shown)....................... 1
B. Bit Carrier & Tailstock Assembly ................ 1
C. Combo Wrenches 8/10, 14/17mm .....1 Each
D. Small Grinding Wheels 60-Grit .................. 2
E. Extra-Large Grinding Wheels 60-Grit ........ 2
F. Handwheel Handle & Cap Screw ......1 Each
G. T-Handle Hex Wrench 3mm ....................... 1
Inventory
B
Unpacking
If items are damaged
call us immediately at (570) 546-9663.
Save all packaging materials until
-12-
D
C
E
F
G
Figure 5. Model G0686 loose inventory.
Needed for Setup
The following items are needed, but not included,
for the setup/assembly of this machine.
Description Qty
• Additional People ....................................... 1
• Safety Glasses ........................................... 1
• Hex Wrench 5mm ....................................... 1
• Cleaner/Degreaser ..................... As Needed
• Disposable Shop Rags ............... As Needed
Model G0686 (Mfd. Since 01/15)
Hardware Recognition Chart
USE THIS CHART TO MATCH UP
HARDWARE DURING THE INVENTORY
AND ASSEMBLY PROCESS.
Flat
Head
Cap
Screw
5mm
Model G0686 (Mfd. Since 01/15)
5mm
-13-
The unpainted surfaces of your machine are
coated with a heavy-duty rust preventative that
prevents corrosion during shipment and storage.
This rust preventative works extremely well, but it
will take a little time to clean.
Be patient and do a thorough job cleaning your
machine. The time you spend doing this now will
give you a better appreciation for the proper care
of your machine's unpainted surfaces.
There are many ways to remove this rust preventative, but the following steps work well in a wide
variety of situations. Always follow the manufacturer’s instructions with any cleaning product you
use and make sure you work in a well-ventilated
area to minimize exposure to toxic fumes.
Before cleaning, gather the following:
• Disposable rags
• Cleaner/degreaser (WD•40 works well)
• Safety glasses & disposable gloves
• Plastic paint scraper (optional)
Basic steps for removing rust preventative:
1.
2.
3.
4.
Many cleaning solvents
work in a well-ventilated
Cleanup
Gasoline and petroleum
products have low flash
points and can explode
or cause fire if used to
clean machinery. Av o i d
using these products
to clean machinery.
Put on safety glasses.
Coat the rust preventative with a liberal
amount of cleaner/degreaser, then let it soak
for 5–10 minutes.
Wipe off the surfaces. If your cleaner/degreas-
er is effective, the rust preventative will wipe
off easily. If you have a plastic paint scraper,
scrape off as much as you can first, then wipe
off the rest with the rag.
are toxic if inhaled. Only
area.
NOTICE
Avoid harsh solvents like acetone or brake
parts cleaner that may damage painted surfaces. Always test on a small, inconspicuous location first.
T23692—Orange Power Degreaser
A great product for removing the waxy shipping grease from the non-painted parts of the
machine during clean up.
Repeat Steps 2–3 as necessary until clean,
then coat all unpainted surfaces with a quality
metal protectant to prevent rust.
-14-
Model G0686 (Mfd. Since 01/15)
Site Considerations
Weight Load
Refer to the
of your machine. Make sure that the surface upon
which the machine is placed will bear the weight
of the machine, additional equipment that may be
installed on the machine, and the heaviest workpiece that will be used. Additionally, consider the
weight of the operator and any dynamic loading
that may occur when operating the machine.
Space Allocation
Consider the largest size of workpiece that will
be processed through this machine and provide
enough space around the machine for adequate
operator material handling or the installation of
auxiliary equipment. With permanent installations,
leave enough space around the machine to open
or remove doors/covers as required by the maintenance and service described in this manual.
See below for required space allocation.
Physical Environment
Extreme conditions for this type of machinery are
Place this machine near an existing power source.
other hazards. Make sure to leave enough space
Shadows, glare, or strobe effects that may distract
or impede the operator must be eliminated.
Machine Data Sheet for the weight
Children or untrained people
may be seriously injured by
this machine. Only install in an
access restricted location.
The physical environment where the machine is
operated is important for safe operation and longevity of machine components. For best results,
operate this machine in a dry environment that is
free from excessive moisture, hazardous chemicals, airborne abrasives, or extreme conditions.
generally those where the ambient temperature
range exceeds 41°–104°F; the relative humidity
range exceeds 20%–95% (non-condensing); or
the environment is subject to vibration, shocks,
or bumps.
Electrical Installation
Make sure all power cords are protected from
traffic, material handling, moisture, chemicals, or
around machine to disconnect power supply or
apply a lockout/tagout device, if required.
Lighting
Lighting around the machine must be adequate
enough that operations can be performed safely.
Figure 6. Minimum working clearances.
Model G0686 (Mfd. Since 01/15)
18"
33"
-15-
Assembly
The machine must be fully assembled before it
can be operated. Before beginning the assembly
process, refer to
all
goes smoothly, first clean any
ered or coated in heavy-duty rust preventative (if
applicable).
3. Fully unthread the jig set screw shown in
Figure 9, raise the bit carrier up from the jig
base, then tighten the height lock lever to
hold the bit carrier in place.
Needed for Setup and gather
listed items. To ensure the assembly process
parts that are cov-
Tools Needed (Not Included) Qty
Hex Wrench 5mm .............................................. 1
To assemble the grinder:
1. Use the provided cap screw to install the
handle onto the handwheel, as shown in
Figure 7.
Handle
Bit
Carrier
Set Screw
Figure 9. Jig set screw and height lock lever.
4. Apply a thin coat of light machine oil to the
positioning pin and between the pivot and jig
base for smooth rotation of the jig assembly
(see Figure 10).
Pivot
Base
Jig Height
Lock Lever
Figure 7. Handle installed onto the handwheel.
2. Remove the jig mounting hex bolt and flat
washer shown in Figure 8 from the pivot
base.
Pivot Base
Figure 8. Jig mounting hex bolt and flat washer.
-16 -
Hex Bolt
& Flat Washer
Jig
Base
Positioning Pin
Figure 10. Aligning the jig positioning pin over
the mounting hole in the pivot base.
Model G0686 (Mfd. Since 01/15)
5. Align the positioning pin of the jig with the
Once assembly is complete, test run the machine
to ensure it is properly connected to power and
safety components are functioning correctly.
If you find an unusual problem during the test run,
immediately stop the machine, disconnect it from
power, and fix the problem BEFORE operating the
machine again. The
table in the
SERVICE section of this manual can help.
DO NOT start machine until all preceding
setup instructions have been performed.
Operating an improperly set up machine
Serious injury or death can result from
hole in the pivot base, as shown in Figure 10,
then insert the pin and lay the jig base flat on
the pivot base.
6. To secure the jig assembly, install the hex
bolt and flat washer removed in Step 2
through the jig base and into the pivot base,
as shown in Figure 11.
Hex Bolt
& Flat Washer
Set
Screw
using this machine BEFORE understanding
its controls and related safety information.
DO NOT operate, or allow others to operate,
machine until the information is understood.
may result in malfunction or unexpected results that can lead to serious injury,
death, or machine/property damage.
To test run the machine:
1. Make sure all tools and objects used during
setup are cleared away from the machine.
Figure 11. Jig attached to the pivot base.
7. Loosen the jig height lock lever, thread the jig
set screw back into the pivot base, then tighten the lock lever again to hold the assembly
in place (see Figure 9).
Test Run
Troubleshooting
2. Use the carriage handwheel to make sure the
jig is positioned safely away from the grinding
wheel.
3. Connect the machine to power and turn it
ON.
4. Listen to and watch for abnormal noises or
actions. The machine should run smoothly
with little or no vibration or rubbing noises.
— Strange or unusual noises should be inves-
tigated and corrected before operating the
machine further. Always disconnect the
machine from power when investigating or
correcting potential problems.
5. Turn the machine OFF.
The Test Run consists of verifying the following: 1)
The motor powers up and runs correctly.
Model G0686 (Mfd. Since 01/15)
-17-
SECTION 4: OPERATIONS
To reduce your risk of
serious injury, read this
entire manual BEFORE
To reduce risk of eye injury from flying
Keep hair, clothing, and
ing parts at all times.
Entanglement can result
in death, amputation, or
using machine.
chips or lung damage from breathing dust,
always wear safety glasses and a respirator
when operating this machine.
jewelry away from mov-
Grinding Tips
Once the drill bit is properly set up in the jig, using
your grinder to sharpen the bit is a fairly easy and
quick process. Follow the rules listed below to
keep this process safe and efficient.
• Use the correct diameter grinding wheel for
the diameter of the drill bit. When setting up
the bit in the jig, make sure there is a safe
clearance of at least
the wheel when the bit has reached the end
of its inward path (refer to Selecting Correct
Grinding Wheel on the previous page for
additional information).
• Use a steady motion with the pivot lever as
you move the bit across the cutting edge of
the wheel. An overly slow or jerky motion
could cause the material of the bit to overheat, damaging the tensile strength of the
bit. An overly fast motion may leave the bit
surface ridged or damage the wheel.
1
⁄4" between the bit and
severe crushing injuries!
If you are not experienced with this type
of machine, WE STRONGLY RECOMMEND
that you seek additional training outside of
this manual. Read books/magazines or get
formal training before beginning any projects. Regardless of the content in this section, Grizzly Industrial will not be held liable
for accidents caused by lack of training.
• DO NOT use cutting fluids of any type with
this machine. Your grinder is designed to
perform dry-grinding ONLY.
• Allow the drill bits to become cool to the touch
by themselves if you make more than a few
passes on each side. DO NOT use fluids to
hurry the cooling process, which could damage the tensile strength of the bit.
• With the bit properly positioned on the jig,
make sure the pivot base and jig can move
freely and easily through the full required
range of motion.
• ALWAYS lock the stop rods in the correct,
safe settings before starting the machine.
• Multiple light passes produce better results
than one or two heavy passes.
-18-
Model G0686 (Mfd. Since 01/15)
Drill Bit Terminology
Wheel Care
Use the illustrations and terminology in Figures
12–13 to aid in understanding the drill bit refer-
ences in this manual.
Point
Shank
Flute
Figure 12. Typical 2-flute, twisted drill bit—side
view.
Relief
Edge or Lip
Angle
Cutting
Flute
When grinding, your safety depends, to a large
degree, on the condition of the wheel. A wheel in
poor condition presents the possibility of breaking
apart during rotation and injuring the operator and
others in the area.
Here are some tips to help you avoid breaking
the wheel:
• Always transport, store and handle wheels
with care. Wheels may be damaged if they
are dropped or if heavy objects are stacked
on them.
• Only use wheels that are rated for the RPM
of the grinder.
• Mount the wheel properly (see Changing
Grinding Wheel on Page 21).
• Do not push the bit into the grinding wheel
with such force that it causes the grinder to
bog down. And do not apply pressure to stop
the wheel after turning the grinder OFF.
Diameter
Web
Figure 13. Typical 2-flute, twisted drill bit—front
view.
Chisel
Edge
• Dress the wheel when necessary. Do not
allow it to become glazed.
• Do not store wheels in damp or wet locations.
• Do not overtighten the nut when mounting the
wheel.
• Do not leave the wheel mounted when
machine is not in use.
Model G0686 (Mfd. Since 01/15)
-19 -
Wheel Inspection
Before installing a grinding wheel, it must always
be inspected. DO NOT assume that a wheel is
in sound condition just because it is new. Often,
damage can occur during shipping, with age, or
with exposure to moisture.
To perform a ring test:
1. Make sure wheel is clean and dry; otherwise,
you may get false results.
2. Balance wheel with your finger in hole. If this
is not possible, hang the wheel in the air with
a piece of cord or string looped through hole
in center.
A damaged grinding wheel can fly apart at high
RPM, throwing pieces of abrasive at the operator
and anyone in the vicinity.
First, do a Visual Inspection. Look for any
cracks, chips, nicks or dents in the surface of the
wheel. If you see any of these, DO NOT use the
wheel.
Second, do a Ring Test. This test will give you an
indication of any internal damage that may not be
obvious during a visual inspection.
A damaged grinding wheel can fly apart
and eject chunks of abrasive material with
great force, causing serious injury or death.
Inspect every grinding wheel before it is
mounted. DO NOT use a damaged grinding
wheel!
3. At points shown in Figure 14, gently tap
wheel with light, non-metallic device such as
handle of screwdriver or a wooden mallet.
STOP
Rated 3500 RPM
Make sure your grinder is not
faster than the rated RPM of this wheel
Type-1
Aluminum
Oxide
Grinding can be dangerous
Visually inspect this wheel
for cracks, nicks,chips
WARNING
60 Grit
Grade L
Vitrified Bond
Figure 14. Tapping locations when performing a
ring test.
4. An undamaged wheel will emit a clear metallic ring or “ping” sound in each of these spots.
A damaged wheel will respond with a dull
thud that has no clear tone.
-20-
5. If you determine from the ring test that the
wheel is damaged, DO NOT use it!
Model G0686 (Mfd. Since 01/15)
Grinding Wheels
Selecting Correct Grinding Wheel
Grinding Wheel Drill Bit Diameter
Small Wheel (60 x 35mm) ......................
Extra Large Wheel (70 x 54mm) ............. 1
The inside diameter of the grinding wheel must
be large enough to allow the bit inside the wheel
at the correct angle WITHOUT coming closer
1
⁄4" to the opposite interior wall, as shown in
than
Figure 15 and illustrated in Figure 16.
5
⁄8"–1 1⁄4"
1
⁄4"–2"
To avoid serious personal injury from flying
wheel or drill bit debris, ALWAYS use the
correct grinding wheel diameter for the size
of the drill bit.
Changing Grinding Wheel
Tools Needed Qty
Wrench 10mm ................................................... 1
To change the grinding wheel:
1. DISCONNECT GRINDER FROM POWER!
Safe Clearance
Between Wheel & Bit
Figure 15. Use the correct diameter wheel for
the drill bit diameter.
Correct
Incorrect
& Unsafe
2. Use the wrench on the left-hand side of the
motor arbor to keep it from turning, then
rotate the grinding wheel counterclockwise
to remove it from the arbor, as shown in
Figure 17.
Wrench On
Motor Arbor
Figure 17. Removing the grinding wheel.
Touching or
Less Than
Greater
Than 1/4"
Clearance
Figure 16. Correct and incorrect wheel diameter
to bit diameter relationship.
Model G0686 (Mfd. Since 01/15)
1/4"
Clearance
3. Store the grinding wheel in a safe, dry location that is not exposed to extreme temperatures.
4. Visually check the replacement wheel for
cracks, soft spots, excessive wear, or any
other damage—if you are not sure about the
condition of the wheel, DO NOT use it!
5. Thread the wheel onto the motor arbor and
only hand-tighten it.
Note: The force of the bit against the coun-
terclockwise rotation of the wheel will keep it
safely on the arbor.
-21-
Grinding Cutting
Edge & Point Angle
The majority of sharpening operations of a 2-flute,
twisted drill bit will involve grinding the cutting
edge of the flute and the point angle.
Tools Needed Qty
T-Handle Hex Wrench 3mm .............................. 1
Wrench 17mm.................................................... 1
To grind the drill bit cutting edge and point
angle:
1. DISCONNECT GRINDER FROM POWER!
2. Move the carriage fully away from the grind-
ing wheel.
5. Adjust the height set screw to raise or lower
the bit carrier until the bottom of the carrier
base is even with the number on the height
scale that is equal to the bit's diameter
(see Figures 18–19). The height scale is in
millimeters.
Height
Set Screw
T-Handle
Hex Wrench
3. Mount the correct grinding wheel for your
operation (refer to Grinding Wheels on
Page 21 for detailed instructions).
4. Loosen the height lock lever (see Figure 18).
Height
Lock
Lever
Scale
Bottom of
Bit Carrier
Figure 18. Bit carrier height scale and height
lock lever.
Figure 19. Adjusting the bit carrier height with
the height set screw.
6. Tighten the height lock lever to secure the
height setting of the carrier.
7. Position the drill bit so that it extends approximately 1" beyond the carrier, as shown in
Figure 20.
1"
-22-
Figure 20. Correctly positioning the bit on the
carrier.
Model G0686 (Mfd. Since 01/15)
8. Position and secure the tailstock up against
the back of the bit so that it will not move away
from the grinding wheel during operation.
— If the bit shank is center-drilled: Insert
the tailstock center point into the bit shank
center-drilled hole, then tighten the tailstock
bottom lock knob and height lock lever to
secure the setting (see Figures 21–22).
— If the bit shank is not center-drilled:
Raise the tailstock center point above the
bit shank and lock it in place. Then, move
the tailstock base up against the bit shank
and tighten the bottom lock knob to hold it
in place, as shown in Figure 23.
Bottom
Lock Knob
Figure 21. Aligning the tailstock with the center-
drilled hole of the bit shank.
Height Lock Lever
Tailstock
Center Point
Figure 22. Tailstock in the correct position
against the center-drilled shank.
Figure 23. Tailstock in proper position against a
bit shank that is not center-drilled.
9. Rotate the bit so that the cutting edges are
horizontal, as shown in Figure 24.
Cutting Edges Horizontal
Figure 24. Bit rotated so that the cutting edges
are horizontal.
Model G0686 (Mfd. Since 01/15)
-23-
10. Loosen the flute pin lock knob and move the
flute pin firmly against a flute until the bit cannot rotate clockwise, as shown in Figure 25.
Flute Pin
Lock Knob
Figure 25. Flute pin in the proper position.
Note: You can adjust the distance that the
flute pin extends above the bit carrier by
holding the pin's lock knob from the bottom
and turning the pin from the top, as shown in
Figure 26.
11. Rotate the jig assembly until the rotational
scale reads the desired angle of cut at the
mark, then tighten the hex bolt at the base to
secure the setting (see Figure 27).
Note: The example shown in Figure 27
is set for a 118° combined angle of both
point angles, as illustrated in Figure 28.
For general drilling with 2-flute, twisted bits,
118° is acceptable. However, the correct
angle may vary, depending upon your drilling
requirements.
Mark
Rotational
Scale
Hex Bolt
Figure 26. Adjusting the height of the flute pin.
If the drill bit should unexpectedly rotate or
move during the drilling operation, the grinding wheel could be damaged and fly apart or
the operator's hands could be drawn into
the wheel. To reduce the risk of personal
injury and property damage, ALWAYS make
sure the drill bit is properly secured with the
tailstock and flute pin before operation.
Figure 27. Jig rotational scale set at 118°.
118° = Total of Both Point Angles
59°59°
Figure 28. Illustration of calculating total point
angle.
-24-
Model G0686 (Mfd. Since 01/15)
12. Loosen the lock knob shown in Figure 29
and pull the stop rod all the way out from the
pivot base.
14. While holding the drill bit to keep it from moving, carefully push the stop rod in until you
feel resistance, then tighten the lock knob to
secure the setting.
Lock Knob
Stop Rod
Figure 29. Loosening the knob on the front stop
rod.
13. Use the carriage handwheel and pivot lever
to position the outside diameter of the bit
slightly past the inside cutting edge of the
wheel, as shown in Figure 30.
1
Note: Make sure there is at least
⁄4" clearance between the forward edge of the drill bit
and the right inside edge of the wheel when
you have completed Step 13.
Note: When the stop rod is locked in the cor-
rect position, it will limit the travel of the bit so
that it will not reach the opposite wheel lip.
15. Recheck the position of the drill bit in the jig.
Make sure all lock knobs and levers are tight,
then move the pivot lever back and forth to
check the clearance between the bit and the
wheel.
16. Use the carriage handwheel and pivot lever
to position the center point of the bit's chisel
edge, so that it just touches the inside edge
of the grinding wheel, as shown in Figure 31.
Bit
Center
Point
1
⁄4" Safe
Clearance
Figure 30. Drill bit outer edge slightly past the
inside cutting edge of the wheel.
Figure 31. Bit center point touching the wheel
inside edge.
Model G0686 (Mfd. Since 01/15)
-25-
17. Rotate the carriage handwheel counterclockwise one increment of the scale shown in
Figure 32 to move the drill bit away.
The handwheel scale is in increments of
0.30mm or approximately 0.012", with one
full rotation moving the carriage 15mm or
approximately 0.600".
18. Pull the pivot lever all the way back to move
the drill bit away from the grinding wheel,
then connect the machine to power, turn
it ON, and wait for the wheel to reach full
speed.
19. Hold the drill bit firmly against the tailstock
and flute pin with your right hand.
Note: Slightly backing the drill bit away from
the wheel will allow the first grinding passes
to take off any burrs or high spots.
Scale
Figure 32. Carriage handwheel and scale.
20. To perform a grinding pass, move the pivot
lever with a moderate and steady motion to
pass the bit across the wheel's inside cutting
edge, then stop when you feel resistance
from the front stop rod.
21. Without moving your right hand, reverse the
motion of the pivot lever until the drill bit is
clear of the grinding wheel.
22. Turn the machine OFF and wait for the grind-
ing wheel to come to a complete stop.
23. Rotate the drill bit 180° in the bit carrier and
repeat Steps 18–22 to grind the opposite
side of the bit.
24. Rotate the carriage handwheel clockwise one
increment of the handwheel scale to move
the drill bit toward the grinding wheel 0.30
mm (or approximately 0.012"), then repeat
Steps 18–22 again.
Grinding wheels have the capability of
removing a lot of skin quickly. Keep a firm
grip on the drill bit in the jig and position
your hands safely away from the wheel during operation.
25. Repeat Step 24 until you are satisfied with
cutting edges and point angles of the bit.
-26-
Model G0686 (Mfd. Since 01/15)
ACCESSORIES
Installing unapproved accessories may
order online at www.grizzly.com or call 1-800-523-4777
SECTION 5: ACCESSORIES
cause machine to malfunction, resulting in
serious personal injury or machine damage.
To reduce this risk, only install accessories
recommended for this machine by Grizzly.
NOTICE
Refer to our website or latest catalog for
additional recommended accessories.
Basic Eye Protection
T20501—Face Shield Crown Protector 4"
T20502—Face Shield Crown Protector 7"
T20503—Face Shield Window
T20451—“Kirova” Clear Safety Glasses
T20452—“Kirova” Anti-Reflective S. Glasses
T20456—DAKURA Safety Glasses, Black/Clear
T20502
T20452
H5891, H5892 Diamond Dressers
Industrial diamond for dressing grinding wheels.
8¼" long round body with knurled grip for maximum control. Includes protective rubber end cap.
Model H5891 ¼ Carat.
Model H5892 ¾ Carat.
Figure 34. Models H5891 & H5892 Diamond
Dressers.
H5946—Wheel Dresser #2
Exposes new grains for aggressive cutting on all
types of grinding wheels. Star wheels and discs
are hardened steel. Cast iron handle provides
stabilizing mass for better control.
T20503
T20456
Figure 33. Assorted eye protection.
Model G0686 (Mfd. Since 01/15)
T20451
Figure 35. H5946 Wheel Dresser #2.
-27-
SECTION 6: MAINTENANCE
To reduce risk of shock or
accidental startup, always
disconnect machine from
Wheel Dressing
When the wall of the wheel becomes too thin and
power before adjustments,
maintenance, or service.
begins to chip during operation, use a diamond
dresser to remove the bevel on the front edge of
the wheel.
Schedule
For optimum performance from this machine, this
maintenance schedule must be strictly followed.
Ongoing
To maintain a low risk of injury and proper
machine operation, if you ever observe any of the
items below, shut down the machine immediately
and fix the problem before continuing operations:
• Worn or damaged grinding wheel.
• Worn or damaged wires.
• Any other unsafe condition.
Weekly Maintenance
• Lubricate pivot handle.
• Lubricate leadscrew and slides.
• Clean/vacuum dust buildup.
• Lubricate leadscrew and slides.
• Check grinding wheel for loading up.
Wheel Storage
Grinding wheels can be easily damaged, so it is
important to store them properly. Follow all wheel
manufacturer storage instructions. Always store
grinding wheels in a location that is dry and protected from potential damage due to them being
dropped or having other items dropped on them.
Also, avoid storing grinding wheels where there is
high humidity, extreme heat or cold, or solvents.
Replacing Light Bulb
Replacement Bulb .......................... P0686002V2
To remove the bulb, gently pull it straight out of
the housing.
Insert the new bulb by gently pressing it into the
housing until it is fully seated.
Cleaning &
Protecting
Cleaning the Model G0686 is relatively easy.
Vacuum excess debris, and wipe off the remaining
dust with a dry cloth.
-28-
Model G0686 (Mfd. Since 01/15)
Lubrication
Pivot Rod
Pull up on the pivot rod to remove it from the pivot
base, then use a shop rag and mineral spirits to
clean away the grease and grime from the rod
slot and the pivot points (see Figure 36). Apply a
small amount of multi-purpose grease to each of
the pivot points.
Rod Slot
Pivot Points
Leadscrew & Slides
Remove the front panels of the pivot base and carriage to access the slides and carriage leadscrew
(see Figure 37), then use a shop rag, clean
brush, and mineral spirits to clean away the
grease and grime from the slides and leadscrew.
Apply a small amount of multi-purpose grease to
the slides and leadscrew, then move the devices
through their full range of motion to distribute the
lubricant.
Slides
Leadscrew
Figure 36. Pivot rod lubrication.
Figure 37. Leadscrew and slide lubrication.
Model G0686 (Mfd. Since 01/15)
-29-
troubleshooting
Review the troubleshooting procedures in this section if a problem develops with your machine. If you need
the
serial number and manufacture date of your machine before calling.
SECTION 7: SERVICE
replacement parts or additional help with a procedure, call our Technical Support. Note: Please gather
Troubleshooting
Symptom Possible Cause Possible Solution
Machine does not
start or a breaker
trips.
Machine stalls or is
underpowered.
Machine has
vibration or noisy
operation.
Drill bit not
sharpened to
desired point angle.
Drill bit smokes or
tip has black, blue,
or purple color.
Wheel dulls or
clogs quickly, grit
falls off.
1. Power supply switched OFF or at fault.
2. Plug/receptacle at fault/wired wrong.
3. Motor connection wired wrong.
4. Wall circuit breaker tripped.
5. Wiring open/has high resistance.
6. Motor brushes at fault.
7. Motor ON/OFF switch at fault.
8. Motor at fault.
1. Drill bit not properly aligned with wheel.
2. Motor wired incorrectly.
3. Plug/receptacle at fault.
4. Motor brushes at fault.
5. Machine undersized for task.
6. Motor at fault.
7. Motor bearings at fault.
1. Motor or component loose.
2. Grinding wheel at fault.
3. Incorrectly mounted to workbench.
4. Drill bit loose.
5. Motor bearings at fault.
6. Motor shaft bent.
1. Pivot base not set at the correct angle.
2. Drill bit not at the correct height.
3. Bit sharpened unevenly or more pressure
applied to one side than the other when
grinding.
1. Too much pressure applied. 1. Reduce pressure and feed rate, and discard the
1. Too much pressure applied.
2 Bad wheel dress.
3. Wheel stored in moist or extreme
temperature environment.
1. Ensure power supply is ON/has correct voltage.
2. Test for good contacts; correct the wiring.
3. Correct motor wiring connections (Page 33).
4. Ensure circuit size is correct/replace weak breaker.
5. Check/fix broken, disconnected, or corroded wires.
6. Remove/replace brushes (Page 31).
7. Replace switch.
8. Test/repair/replace.
1. Properly align drill bit with wheel; make light
passes.
2. Wire motor correctly (Page 33).
3. Test for good contacts/correct wiring.
4. Remove/replace brushes (Page 31).
5. Use new grinding wheel; reduce the feed rate.
6. Test/repair/replace.
7. Test/repair/replace.
1. Inspect/replace damaged bolts/nuts, and re-tighten
with thread locking fluid.
2. Dress/replace grinding wheel.
3. Adjust feet, shim, or tighten mounting hardware.
4. Properly mount the bit in the jig assembly; hold firmly
during operation.
5. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
6. Test with dial indicator and replace motor.
1. Set the pivot base to the correct angle.
2. Use the jig assembly height scale to adjust the bit to
the proper height for its diameter.
3. Apply even pressure to both sides of the point when
grinding.
damaged bit.
1. Reduce pressure and feed rate.
2. Properly dress the wheel surfaces.
3. Replace wheel; store wheels in dry, moderate
temperature environment.
-30-
Model G0686 (Mfd. Since 01/15)
Motor Brushes
The motor is equipped with two long-life carbon
brushes. The brush life is affected by motor loads
and usage.
Replace both brushes as a set if the motor
becomes noisy, loses speed, heats up, does not
start, or either brush is worn down to less then
in length.
Tools Needed Qty
Standard Screwdriver ........................................ 1
To check/replace the motor brushes:
1. DISCONNECT GRINDER FROM POWER!
2. Unscrew the plastic cover, and remove the
front motor brush assembly, as shown in
Figure 38.
1
⁄4"
3. Measure the length of the carbon tip.
1
— If the carbon tip is worn down to
or less, replace both brush assemblies with
new ones.
Note: Replacement motor brushes are avail-
able through Grizzly.
4. Repeat Steps 2–3 with the motor brush found
on the rear of the motor.
5. After inserting the brush assemblies back into
the motor, re-install the plastic caps to hold
them in place.
⁄4" (6mm)
Note: As you remove the brush assembly,
make note of the orientation of the carbon tip
so that if it is still good you can re-install it the
same way.
Brush Assembly
Figure 38. Removing the front motor brush
assembly.
Model G0686 (Mfd. Since 01/15)
-31-
These pages are current at the time of printing. However, in the spirit of improvement, we may make changes to the electrical systems of future machines. Compare the manufacture date of your machine to the one
number and manufacture date of your
machine before calling. This information can be found on the main machine label.
machine
SECTION 8: WIRING
stated in this manual, and study this section carefully.
If there are differences between your machine and what is shown in this section, call Technical Support at
(570) 546-9663 for assistance BEFORE making any changes to the wiring on your machine. An updated
wiring diagram may be available. Note: Please gather the serial
Wiring Safety Instructions
SHOCK HAZARD. Working on wiring that is con-
nected to a power source is extremely dangerous.
Touching electrified parts will result in personal
injury including but not limited to severe burns,
electrocution, or death. Disconnect the power
from the machine before servicing electrical components!
MODIFICATIONS. Modifying the wiring beyond
what is shown in the diagram may lead to unpredictable results, including serious injury or fire.
This includes the installation of unapproved aftermarket parts.
WIRE CONNECTIONS. All connections must
be tight to prevent wires from loosening during
machine operation. Double-check all wires disconnected or connected during any wiring task to
ensure tight connections.
CIRCUIT REQUIREMENTS. You MUST follow
the requirements at the beginning of this manual
when connecting your machine to a power source.
WIRE/COMPONENT DAMAGE. Damaged wires
or components increase the risk of serious personal injury, fire, or machine damage. If you notice
that any wires or components are damaged while
performing a wiring task, replace those wires or
components.
MOTOR WIRING. The motor wiring shown in
these diagrams is current at the time of printing
but may not match your machine. If you find this
to be the case, use the wiring diagram inside the
motor junction box.
CAPACITORS/INVERTERS. Some capacitors
and power inverters store an electrical charge for
up to 10 minutes after being disconnected from
the power source. To reduce the risk of being
shocked, wait at least this long before working on
capacitors.
EXPERIENCING DIFFICULTIES. If you are experiencing difficulties understanding the information
included in this section, contact our Technical
Support at (570) 546-9663.
The photos and diagrams
included in this section are
best viewed in color. You
can view these pages in
color at www.grizzly.com.
-32-
Model G0686 (Mfd. Since 01/15)
wiring diagram
Neutral
Hot
Ground
Wiring Diagram
110 VAC
5-15 Plug
Motor
6A05-GW
Diodes
ON/OFF
Switch
4
5
1 2
Lamp
Switch
Model G0686 (Mfd. Since 01/15)
Lamp
Figure 39. Model G0686 wiring.
READ ELECTRICAL SAFETY
-33-
ON PAGE 32!
SECTION 9: PARTS
We do our best to stock replacement parts when possible, but we cannot guarantee that all parts shown
are available for purchase. Call (800) 523-4777 or visit www.grizzly.com/parts to check for availability.
Base
2V2
3
4
10
14
13
11
1
9
12
7
REF PART # DESCRIPTION REF PART # DESCRIPTION
1 P0686001 LAMP HOUSING ASSEMBLY 9 P0686009 BASE
2V2 P0686002V2 LED LAMP 5W 100-240V V2.02.19 10 P0686010 MOTOR POWER SWITCH 16A 250V
3 P0686003 LAMP LENS 11 P0686011 LAMP SWITCH 12V-240V
4 P0686004 LENS RUBBER SEAL 12 P0686012 POWER CORD 16G 3W 73" 5-15P
5 P0686005 RUBBER FOOT 13 P0686013 PHLP HD SCR M3-.5 X 10
6 P0686006 HEX BOLT M8-1.25 X 20 14 P0686014 STRAIN RELIEF TYPE-6 5/8" ST
7 P0686007 ACRYLIC COVER
5
6
-34-
BUY PARTS ONLINE AT GRIZZLY.COM!
Scan QR code to visit our Parts Store.
Model G0686 (Mfd. Since 01/15)
21
Motor & Wheel
19
20
22
25
REF PART # DESCRIPTION REF PART # DESCRIPTION
15 P0686015 GRINDING WHEEL 60G 60OD X 35MMID 21 P0686021 PHLP HD SCR M5-.8 X 10
17 P0686017 GRINDING WHEEL 60G 70OD X 54MMID 22 P0686022 FAN COVER
18 P0686018 ARBOR SPACER 23 P0686023 MOTOR BRUSH HOUSING
19 P0686019 WHEEL GUARD 24 P0686024 MOTOR BRUSH
20 P0686020 BUTTON HD CAP SCR M5-.8 X 12 25 P0686025 MOTOR BRUSH CAP
24
23
18
15
17
Model G0686 (Mfd. Since 01/15)
BUY PARTS ONLINE AT GRIZZLY.COM!
Scan QR code to visit our Parts Store.
-35-
33
32
31
Jig Assembly
30
29
26
28
42
27
39
44
43
45
38
40
35
34
36
41
REF PART # DESCRIPTION REF PART # DESCRIPTION
26 P0686026 BIT CARRIER 36 P0686036 JIG BASE
27 P0686027 SET SCREW M6-1 X 50 37 P0686037 PIN 5 X 12
28 P0686028 FLAT HD SCR M5-.8 X 8 38 P0686038 FLAT WASHER 10MM
29 P0686029 THREADED LOCK SHAFT 39 P0686039 HEX BOLT M10-1.5 X 30
30 P0686030 KNURLED KNOB M6-1 X 32 40 P0686040 SLOTTED V-BLOCK
31 P0686031 SLIDE BLOCK 41 P0686041 KNURLED KNOB M4-.7
32 P0686032 FLAT WASHER 6MM 42 P0686042 HEX NUT M4-.7
33 P0686033 LOCK LEVER M6-1 X 12 43 P0686043 SPECIAL SET SCREW M4-.7 X 32
34 P0686034 LOCK LEVER M8-1.25 X 25 44 P0686044 FLAT WASHER 6MM
35 P0686035 FLAT WASHER 8MM 45 P0686045 KNURLED KNOB M6-1 X 30
37
-36-
BUY PARTS ONLINE AT GRIZZLY.COM!
Scan QR code to visit our Parts Store.
Model G0686 (Mfd. Since 01/15)
Pivot Base & Carriage
59
69
52
60
57
54
51
47
55
62
46
48
49
50
58
56
68
53
51
63
61
58
51
51
65
64
70
66
67
REF PART # DESCRIPTION REF PART # DESCRIPTION
46 P0686046 E-CLIP 10MM 59 P0686059 CARRIAGE COVER
47 P0686047 PIVOT HANDLE 60 P0686060 FRONT STOP ROD
48 P0686048 HANDLE AXLE 61 P0686061 CARRIAGE
49 P0686049 COPPER PIN 62 P0686062 PLUG
50 P0686050 REAR STOP ROD 63 P0686063 UPPER CONNECTING BLOCK
51 P0686051 CAP SCREW M6-1 X 20 64 P0686064 LOWER CONNECTING BLOCK
52 P0686052 KNOB 1/2-20 65 P0686065 HANDWHEEL
53 P0686053 CAP SCREW M10-1.5 X 25 66 P0686066 HANDLE
54 P0686054 KNURLED KNOB M6-1 X 30 67 P0686067 SPECIAL SCREW M6-1 X 55
55 P0686055 SPECIAL SCREW M10-1.5 X 25 68 P0686068 SLIDE BAR
56 P0686056 SPECIAL HEX NUT M10-1.5 69 P0686069 PIVOT BASE
57 P0686057 PHLP HD SCR M4-.7 X 10 70 P0686070 CARRIAGE LEADSCREW
58 P0686058 SLIDE AXIS SCREW M4-.7 X 10
Model G0686 (Mfd. Since 01/15)
BUY PARTS ONLINE AT GRIZZLY.COM!
Scan QR code to visit our Parts Store.
-37-
71
77
Labels & Cosmetics
72
Wheel Rotation Label
REF PART # DESCRIPTION REF PART # DESCRIPTION
71 P0686071 MACHINE ID LABEL 75 P0686075 DISCONNECT POWER LABEL
72 P0686072 WHEEL ROTATION LABEL 76 P0686076 READ MANUAL LABEL
73 P0686073 GRIZZLY PUTTY TOUCH-UP PAINT 77 P0686077 GRIZZLY LOGO
74 P0686074 EYE/LUNG HAZARD LABEL
76
73
74
75
Safety labels help reduce the risk of serious injury caused by machine hazards. If any label comes
off or becomes unreadable, the owner of this machine MUST replace it in the original location
before resuming operations. For replacements, contact (800) 523-4777 or www.grizzly.com.
-38-
BUY PARTS ONLINE AT GRIZZLY.COM!
Scan QR code to visit our Parts Store.
Model G0686 (Mfd. Since 01/15)
FOLD ALONG DOTTED LINE
FOLD ALONG DOTTED LINE
Place
Stamp
Here
GRIZZLY INDUSTRIAL, INC.
P.O. BOX 2069
BELLINGHAM, WA 98227-2069
Send a Grizzly Catalog to a friend:
Name_______________________________
Street_______________________________
City______________State______Zip______
TAPE ALONG EDGES--PLEASE DO NOT STAPLE
Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser from
the date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse,
negligence, accidents, repairs or alterations or lack of maintenance. This is Grizzly’s sole written warranty
and any and all warranties that may be implied by law, including any merchantability or fitness, for any particular purpose, are hereby limited to the duration of this written warranty. We do not warrant or represent
that the merchandise complies with the provisions of any law or acts unless the manufacturer so warrants.
In no event shall Grizzly’s liability under this warranty exceed the purchase price paid for the product and
any legal actions brought against Grizzly shall be tried in the State of Washington, County of Whatcom.
We shall in no event be liable for death, injuries to persons or property or for incidental, contingent, special,
or consequential damages arising from the use of our products.
To register
on Grizzly.com. Enter all applicable information for
To take advantage of this warranty, contact us by mail or phone and give us all the details. We will then issue
you a “Return Number,’’ which must be clearly posted on the outside as well as the inside of the carton. We
will not accept any item back without this number. Proof of purchase must accompany the merchandise.
The manufacturers reserve the right to change specifications at any time because they constantly strive to
achieve better quality equipment. We make every effort to ensure that our products meet high quality and
durability standards and we hope you never need to use this warranty.
Please feel free to write or call us if you have any questions about the machine or the manual.
Thank you again for your business and continued support. We hope to serve you again soon.
REVISED
WARRANTY & RETURNS
the warranty, scan the QR code below. You will be directed to the Warranty Registration page
the product.
WARRANTY
REVISED
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