UNIVERSAL KNIFE GRINDER
MODEL G2790
INSTRUCTION MANUAL
COPYRIGHT © 1992 BY GRIZZLY INDUSTRIAL, INC.
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
REVISED APRIL, 1999. PRINTED IN U.S.A.
-C- G2790 Universal Knife Grinder
Table Of Contents
PAGE
1. SAFETY
SAFETY INSTRUCTIONS FOR POWER TOOLS................................................1-2
ADDITIONAL SAFETY INSTRUCTIONS FOR GRINDERS ....................................3
2. CIRCUIT REQUIREMENTS
110V OPERATION ....................................................................................................4
FUSING ....................................................................................................................4
EXTENSION CORDS ................................................................................................4
GROUNDING ............................................................................................................4
3. INTRODUCTION
COMMENTARY ........................................................................................................5
UNPACKING..............................................................................................................6
PARTS INVENTORY ................................................................................................6
CLEAN UP ................................................................................................................7
SITE CONSIDERATIONS ........................................................................................7
4. ASSEMBLY
WORK PLATE SYSTEM ..........................................................................................8
STATIONARY CLAMPS ........................................................................................8-9
GRINDER CONTROLS GUIDE ................................................................................9
5. OPERATIONS
OVERVIEW..............................................................................................................10
WIDE KNIVES ....................................................................................................10-11
NARROW KNIVES ............................................................................................11-12
OTHER BLADES ....................................................................................................12
6. MAINTENANCE
WHEELDRESSING ................................................................................................13
WHEEL REMOVAL ................................................................................................13
7. CLOSURE ....................................................................................................................14
MACHINE DATA......................................................................................................................15
WARRANTY AND RETURNS..................................................................................................16
PARTS DIAGRAM ..................................................................................................................17
PARTS LIST ............................................................................................................................18
G2790 Universal Knife Grinder -1-
Safety Instructions For Power Tools
SECTION 1: SAFETY
5. KEEP CHILDREN AND VISITORS
AWAY. All children and visitors should be
kept a safe distance from work area.
6. MAKE WORK SHOP CHILD PROOF with
padlocks, master switches, or by removing
starter keys.
7. DON’T FORCE TOOL. It will do the job
better and safer at the rate for which it was
designed.
8. USE RIGHT TOOL. Don’t force tool or
attachment to do a job for which it was not
designed.
1. KEEP GUARDS IN PLACE and in working
order.
2. REMOVE ADJUSTING KEYS AND
WRENCHES. Form habit of checking to
see that keys and adjusting wrenches are
removed from tool before turning on.
3. KEEP WORK AREA CLEAN. Cluttered
areas and benches invite accidents.
4. DON’T USE IN DANGEROUS ENVIRONMENT. Don’t use power tools in damp or
wet locations, or where any flammable or
noxious fumes may exist. Keep work area
well lighted.
For Your Own Safety Read Instruction
Manual Before Operating This Equipment
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.
This symbol is used to alert the user to useful information
about proper operation of the equipment.
The purpose of safety symbols is to attract your attention to possible hazardous conditions.
This manual uses a series of symbols and signal words which are 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.
NOTICE
-2- G2790 Universal Knife Grinder
9. USE PROPER EXTENSION CORD. Make
sure your extension cord is in good condition. Conductor size should be in accordance with the chart below. The amperage
rating should be listed on the motor or tool
nameplate. An undersized cord will cause a
drop in line voltage resulting in loss of
power and overheating. Your extension
cord must also contain a ground wire and
plug pin. Always repair or replace extension cords if they become damaged.
Minimum Gauge for Extension Cords
10. WEAR PROPER APPAREL. Do not wear
loose clothing, gloves, neckties, rings,
bracelets, or other jewelry which may get
caught in moving parts. Non-slip footwear
is recommended. Wear protective hair covering to contain long hair.
11. 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.
12. SECURE WORK. Use clamps or a vise to
hold work when practical. It’s safer than
using your hand and frees both hands to
operate tool.
LENGTH
AMP RATING 25ft 50ft 100ft
0-6 18 16 16
7-10 18 16 14
11-12 16 16 14
13-16 14 12 12
17-20 12 12 10
21-30 10 10 No
Safety Instructions For Power Tools
13. DON’T OVERREACH. Keep proper foot-
ing and balance at all times.
14. MAINTAIN TOOLS WITH CARE. Keep
tools sharp and clean for best and safest
performance. Follow instructions for lubricating and changing accessories.
15. DISCONNECT TOOLS before servicing
and changing accessories, such as blades,
bits, cutters, and the like.
16. REDUCE THE RISK OF UNINTENTIONAL STARTING. Make sure switch is in off
position before plugging in.
17. USE RECOMMENDED ACCESSORIES.
Consult the owner’s manual for recommended accessories. The use of improper
accessories may cause risk of injury.
18. CHECK DAMAGED PARTS. Before fur-
ther 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.
19. NEVER LEAVE TOOL RUNNING UNATTENDED. TURN POWER OFF. Don’t
leave tool until it comes to a complete stop.
G2790 Universal Knife Grinder -3-
Additional Safety Instructions For Grinders
No list of safety guidelines can be complete. Every shop environment is different.
Always consider safety first, as it applies to
your individual working conditions. Use
this and other machinery with caution and
respect. Failure to do so could result in
serious personal injury, damage to equipment or poor work results.
1. Wear a face shield and/or safety goggles.
2. Use clamps and supports to sharpen
tools.
3. Grinding creates sparks. Make sure
your work area is free of combustible
materials.
4. Dress the grinding wheel when its surface becomes rutted or uneven. Replace
the wheel if the wear or damage
becomes excessive.
5. Do not use a wheel that is cracked or
chipped.
6. Be sure the grinder is mounted on a stable surface.
7. If you are unclear about operating the
machine, don’t do it. Please call our service department if you have questions
about any element of this machine’s
operation.
8. Use care when handling sharpened cutting tools.
Operating this equipment has the potential
for flying debris to cause eye injury. Always
wear safety glasses or goggles when operating equipment. Everyday glasses or reading glasses only have impact resistant
lenses, they are not safety glasses. Be certain the safety glasses you wear meet the
appropriate standards of the American
National Standards Institute (ANSI).
Like all power tools, there is danger associated with the Model G2790 Universal Knife
Grinder. Accidents are frequently caused
by lack of familiarity or failure to pay attention. Use this tool with respect and caution
to lessen the possibility of operator injury. If
normal safety precautions are overlooked
or ignored serious personal injury may
occur.
-4- G2790 Universal Knife Grinder
110V Operation
SECTION 2: CIRCUIT REQUIREMENTS
A 15-amp fuse or circuit breaker should be used
when fusing the universal knife grinder. Circuits
rated any higher are not adequate to protect the
motor from power surges.
Equipment returned to us for service that shows
evidence of being over-fused will be repaired or
replaced totally at the customer’s expense,
regardless of the present warranty status.
Fusing
If you find it necessary to use an extension cord
with the Model G2790, make sure the cord is
rated Hard Service (grade S) or better. Refer to
the chart in the standard safety instructions to
determine the minimum gauge for the extension
cord. The extension cord must also contain a
ground wire and plug pin. Always repair or
replace extension cords when they become worn
or damaged.
Extension Cords
Grounding
This equipment must be grounded. Verify
that any existing electrical outlet and circuit
you intend to plug into is actually grounded. If it is not, it will be necessary to run a
separate 12 A.W.G. copper grounding wire
from the outlet to a known ground. Under
no circumstances should the grounding pin
from any three-pronged plug be removed.
Serious personal injury may occur.
In the event of an electrical short, grounding
reduces the risk of electric shock by providing a
path of least resistance to disperse electric current. This tool is equipped with a power cord having an equipment-grounding conductor. The outlet must be properly installed and grounded in
accordance with all local codes and ordinances.
The Model G2790 is wired for 110/120V, single
phase operation only. The
1
/2 HP, 1720 RPM
motor draws 8 amps. This is not a large load.
However, if you operate the grinder on a circuit
that is already close to capacity, it could overload
that circuit. If an unusual load does not exist and
a power failure still occurs, contact a qualified
electrician or our service department.
Figure 1. Grounded plug configuration.
G2790 Universal Knife Grinder -5-
SECTION 3: INTRODUCTION
We are proud to offer the Grizzly Model G2790
Universal Knife Grinder. The Model G2790 is part
of a growing Grizzly family of fine woodworking
machinery. When used according to the guidelines set forth in this manual, you can expect
years of trouble-free, enjoyable operation and
proof of Grizzly’s commitment to customer satisfaction.
The Model G2790 is designed for heavy-duty
professional use. It features a capacitor-start
1
/2 HP motor that operates on 110V at 3450 RPM.
It is capable of sharpening jointer and planer
knives up to 20" long. Its work table adjusts from
15° to 90° to accommodate a wide range of cutting angles. Overall shipping weight of the Model
G2790 is approximately 58 lbs.
A number of optional accessories for the Model
G2790 are available through the Grizzly catalog.
They include a diamond dressing tool and
replacement stones in 120, 180, 220, and 320
grits.
We are also pleased to provide this manual with
the Model G2790. It was written to guide you
through assembly, review safety considerations,
and cover general operating procedures. It represents our effort to produce the best documentation possible. If you have any comments regarding this manual, please write to us at the address
below:
Grizzly Industrial, Inc.
C
/O Technical Documentation
P.O. Box 2069
Bellingham, WA 98227-2069
Most importantly, we stand behind our machines.
If you have any service questions or parts
requests, please call or write us at the location
listed below.
Grizzly Industrial, Inc.
1203 Lycoming Mall Circle
Muncy, PA 17756
Phone: (570) 546-9663
Fax: (800) 438-5901
E-Mail: techsupport@grizzly.com
Web Site: http://www.grizzly.com
The specifications, drawings, and photographs
illustrated in this manual represent the Model
G2790 as supplied when the manual was prepared. However, owing to Grizzly’s policy of continuous improvement, changes may be made at
any time with no obligation on the part of Grizzly.
Whenever possible, though, we send manual
updates to all owners of a particular tool or
machine. Should you receive one, we urge you to
insert the new information with the old and keep
it for reference.
To operate this, or any power tool, safely
and efficiently, it is essential to become as
familiar with its characteristics as possible.
The time you invest before you begin to use
your Model G2790 will be time well spent.
DO NOT operate this machine until you are
completely familiar with the contents of this
manual. Make sure you read and understand all of the safety procedures. If you do
not understand something, DO NOT operate the machine.
Commentary
-6- G2790 Universal Knife Grinder
Unpacking
This Universal Knife Grinder is shipped from the
manufacturer in a carefully packed carton. If you
discover the machine is damaged after you’ve
signed for delivery, and the truck and driver are
gone, you will need to file a freight claim with the
carrier. Save the containers and all packing materials for possible inspection by the carrier or its
agent. Without the packing materials, filing a
freight claim can be difficult. If you need assis-
tance determining whether you need to file a
freight claim, or with the procedure to file one,
please contact our Customer Service.
Parts Inventory
After all the parts have been removed from the
carton, you should have:
• Table Assembly
• Knife Support Assembly
• Work Plate Assembly
• Pivot Plate Assembly
•
Hardware
-Hex Head Jam Nuts
1
⁄4" - 20 5
-Washers
1
⁄4"5
-Hex Head Bolts 5/16" - 18 x 1/2"3
In the event that any non-proprietary parts are
missing (e.g. a nut or a washer), we would be
glad to replace them, or, for the sake of expediency, replacements can be obtained at your local
hardware store.
When you are completely satisfied with the condition of your shipment, you should inventory its
parts.
NOTICE
A full parts list and breakdown can be found
toward the end of this manual. For easier
assembly, or to identify missing parts,
please refer to the detailed illustrations at
the end of the manual.
G2790 Universal Knife Grinder -7-
Clean Up Site Considerations
BENCH LOAD
Your G2790 Universal Knife Grinder represents a
moderately large weight load in a small footprint.
Be sure that your workbench is adequately reinforced to support the weight of the grinder.
WORKING CLEARANCES
Working clearances can be thought of as the distances between machines and obstacles that
allow safe operation of every machine without
limitation. Ensure that your working area offers
plenty of room for free movement and a substantial amount of distance between you and others
that may be working in your shop space.
LIGHTING AND OUTLETS
Lighting should be bright enough to eliminate
shadow and prevent eye strain. Electrical circuits
should be dedicated or large enough to handle
combined motor amp loads. Outlets should be
located near each machine so power or extension cords are not obstructing high-traffic areas.
Be sure to observe local electrical codes for proper installation of new lighting, outlets, or circuits.
Make your shop “child safe”. Ensure that
your workplace is inaccessible to youngsters by closing and locking all entrances
when you are away. Never allow visitors in
your shop when assembling, adjusting or
operating equipment.
NOTICE
To provide the most stable and secure
working environment, we strongly recommend bolting the grinder to your workbench. Two bolt holes are included for convenient mounting.
The unpainted surfaces are coated with a waxy
oil to protect it from corrosion during shipment.
Remove this protective coating with with a solvent cleaner or citrus-based degreaser. Avoid
chlorine-based solvents as they may damage
painted surfaces should they come in contact.
Always follow the usage instructions on the product you choose for clean up.
Many of the solvents commonly used to
clean machinery can be highly flammable,
and toxic when inhaled or ingested. Always
work in well-ventilated areas far from
potential ignition sources when dealing
with solvents. Use care when disposing of
waste rags and towels to be sure they do
not create fire or environmental hazards.
Keep children and animals safely away
when cleaning and assembling this
machine.
Do not use gasoline or other petroleumbased solvents to remove this protective
coating. These products generally have
low flash points which makes them
extremely flammable. A risk of explosion
and burning exists if these products are
used. Serious personal injury may occur.
Lock Knob
Lock Bar
Pivot Plate
-8- G2790 Universal Knife Grinder
SECTION 4: ASSEMBLY
Work Plate System
To assemble the work plate system:
1. Place the work plate upside-down on your
work bench.
2. Attach the lock bars to the pivot plate with
the lock knobs provided. See Figure 2.
Pivot Rotation Knob
Work Plate
Table
3. Attach the pivot rotation knob to the thread-
ed hole at the outside end of the right lock
bar, so the gears mesh with the teeth on
the edge of the pivot plate.
4. Mount the pivot plate assembly to the back
of the work plate using the three (3)
5
/16" -
18 x
1
/2" hex bolts provided.
5. Turn the work plate assembly right-side-up
and slide the lock bars over the sides of the
grinder table as shown in Figure 2. It may
be necessary to loosen the lock knobs part
way to allow alignment of the bars to the
table.
6. Place the sliding knife support on the work
plate so the knife support’s lip catches the
edge of the work plate.
Run the sliding support over the work plate to
check for smooth movement. Occasionally, a
work plate is shipped from the factory with small
imperfections in the casting that can cause interruptions in movement. Removing these minor
imperfections will ensure smooth movement and
superior sharpening results.
Test pivot movement by loosening the lock
knobs and turning the pivot rotation knob. Make
sure the teeth are meshed properly with those on
the pivot plate.
Stationary Clamps
The Model G2790 features two stationary
clamps that can be attached directly to the pivot
plate. See Figure 3. The clamps are held in
place by compression brackets. To attach the
stationary brackets:
1. Remove the sliding support from the work
plate.
2. Remove the work plate from the pivot
plate.
Figure 2. Location of plate system components.Figure 2. Location of plate system components.
Figure 3. Stationary clamps in place.
G2790 Universal Knife Grinder -9-
3. Place the two tool clamps on the top of the
pivot plate as shown in Figure 3. Attach
using the tool clamp knobs and washers on
top and the special lock nuts underneath
the pivot plate.
4. Position the clamps so they are centered
over the wheel, and adjust the width to the
approximate size of the workpiece you are
sharpening. See Section 5: Operations,
Narrow Knives for further information on
the grinding process.
Grinding Wheel
ON/OFF
Switch
Table
Slider
Assembly
Wheel Height
Lock
Pivot Plate
Adjuster
Grinder Height
Handwheel
Work Plate
Adjuster
Work
Plate
Pivot Plate
Adjuster
Fence
Knife Blade
Adjuster
Knife Blade
Clamp
Figure 4. Universal Knife Grinder controls.
NOTES
-10- G2790 Universal Knife Grinder
SECTION 5: Operations
Setting up the Model G2790 will depend upon
the type of knife you intend to sharpen. Wide
blades, such as jointer or planer knives, will
require the sliding support. To sharpen chisel
blades or other narrower blades – like those
found on smaller block planes – you will want to
attach the stationary clamps as described above.
(Knife inverted for identification purposes.)
Figure 5. Recommended centering of a planer knife in the knife support.
To set up your Model G2790 to handle wide
knives:
1. Remove the sliding support from the work
plate.
2. Loosen the lock knobs that attach the knife
lock plate to the sliding knife support and
remove the plate.
3. Place the knife, bevel down on the sliding
knife support as shown in Figure 5.
4. Turn height adjustment knobs until the
knife is sitting square on the knife support.
(For the best results, make sure the knife is
centered on the support. If the knife you
intend to sharpen is too short to reach
across all three of the inside adjusters, offset the knife so it is centered on two
adjusters – note dotted lines on Figure 5.
5. Once the knife is in place and evenly
adjusted, replace the knife lock plate and
tighten the adjusting knobs.
6. Turn the sliding support assembly over.
The bottom of the support is beveled.
Adjust the knife with the height adjustment
knobs so the knife bevel extends slightly
beyond the bevel of the sliding support
mechanism. Making adjustments may
require loosening the knife lock knobs.
Once again, be sure the blade is adjusted
evenly from side to side.
Planer, jointer and other knives are dangerously sharp. Use extreme caution, particularly after sharpening. Failure to exercise
care while working near knives could result
in severe injury.
Overview
Wide Knives
Let’s begin by looking at the operation for sharpening planer and jointer blades. The two most
important factors that determine the level of success are bevel angle and alignment between the
knife and grinding surface. Make sure all adjustments are done with the machine unplugged.
G2790 Universal Knife Grinder -11-
7. Place the sliding support on the work plate
and turn the pivot adjustment knob until the
angle of the knife bevel is parallel to the
grinding surface.
8. Raise the grinding wheel, using the hand-
wheel at the back of the machine, until the
grinding surface makes contact with the
knife bevel. (The grinding wheel may need
to be lowered to accomplish Step 7.)
9. The grinding wheel should make consis-
tent contact with the knife across the entire
length of the bevel. Move the sliding support across the length of the knife. Adjust
the knife with the height adjustment knobs,
if necessary, to attain proper contact.
Make small adjustments and re-test
against the grinding wheel frequently to
make sure you don’t over-compensate.
10. Once you are sure you’ve made proper
bevel and alignment adjustments, lower
the grinding wheel slightly and turn on the
machine. Move the sliding support so the
knife is at the right hand side of the wheel.
See Figure 6.
Figure 6. Placement of sliding support.
Figure 7. Stationary clamps holding chisel.
11. Slowly raise the wheel until it lightly con-
tacts the knife bevel. Gently slide the knife
across the surface of the grinder. If contact
appears to be smooth and consistent
between the knife and the grinder, return
the sliding support to the right hand side of
the grinding wheel, raise the wheel slightly
and take a second pass. (A common
method for checking proper bevel angle is
to mark the entire surface of the knife’s
bevel with a permanent marker before
grinding. Once you make a pass over the
grinder, you can inspect the bevel to make
sure that the entire surface is being ground
evenly. If a portion of the bevel is not being
contacted, the ink will remain after the initial pass.)
As with the wider knives, proper adjustment for
chisels and other smaller cutting tools requires
that bevels and cutting edges be aligned square-
ly to the grinding surface. To adjust narrow-
edged tools:
1. Attach the stationary clamps to the pivot
plate.
2. Place your cutting tool between the clamps
and tighten the tool in place as shown in
Figure 7.
Use extreme caution when working near
cutting surfaces. Failure to exercise care
while working near knives could result in
severe injury.
Narrow Knives
-12- G2790 Universal Knife Grinder
3. Adjust the angle knob so the bevel of the
cutting tool is flush with the grinding surface.
4. Inspect the cutting edge of the knife. The
edge should contact the grinding wheel
squarely and consistently. Adjustments
can be made by altering the angle of the
chisel in the stationary clamps or by loosening the lock bars and moving the entire
pivot plate along the table until the knife is
square to the grinding wheel.
5. Once you are satisfied with the alignment
of the cutter against the grinding wheel,
lower the wheel slowly and turn on the
machine.
6. Carefully raise the wheel until the grinding
surface contacts the blade. Keep in mind
that with a dry grinding operation, tools can
heat up and lose their temper quickly.
Sharpening should be done lightly and for
short duration to avoid damage to the tool
you’re working with. As with the wider
blades, you can verify that the cutting tool
has been properly ground by applying
marker ink to the bevel.
Once you are proficient with grinding existing
bevel angles, you may want to experiment with
other bevel angles which might suit your particular situation. We recommend you carefully
research custom bevel angles. There is a narrow
line between improving cutting performance and
ruining your cutting tools. There are some fine
books available which discuss sharpening techniques in detail. Be sure to follow directions
closely if you choose to alter factory-set bevels.
Other Blades
Planer, jointer and other knives are dangerously sharp. Use extreme caution, particularly after sharpening. Failure to exercise
care while working near knives could result
in severe injury.
G2790 Universal Knife Grinder -13-
SECTION 6: MAINTENANCE
After a large number of sharpenings, the surface
of the grinding wheel will fill with metal residue
and grit. When this happens, the wheel should
be cleaned or “dressed” with a diamond-tipped
dressing tool.
Grizzly’s Model G3092 Dressing Tool is
designed specifically for the Model G2790. For
price and ordering information, see the latest
Grizzly catalog. The optional dressing tool is
designed to attach to the dressing tool holder
(#19 in the parts diagram at the end of the manual) with the setscrew provided. To dress the
Model G2790 grinding wheel:
1. Loosen the table lock lever under the table.
Use the handwheel to raise the table.
2. Place the dressing tool holder on the fence
above the right side of the grinding wheel
and lower the optional diamond cutter
through the hole in the holder.
3. Once the diamond-embedded end of the
dresser comes in contact with the wheel,
tighten the setscrew and move the holder
so the diamond tip is just outside of the
wheel’s diameter.
4. Turn on the grinder and slowly move the
dressing tool across the top face of the
stone. Move the dressing tool to the starting position, raise the wheel slightly with
the handwheel and repeat.
Several light passes with the dressing tool will
produce the best results, with the least amount of
wear or damage to the wheel or the dressing
tool. The fence will keep the dressing tool from
reaching the inside edge of the wheel.
Eventually, a ridge will form at that point. This will
have no effect on the grinder’s operation.
After prolonged use, you may find it necessary to
replace the grinding wheel. The procedure
requires a
5
/32" wrench. To change the wheel:
1. Remove the fence assembly.
2. Remove the wheel mounting flange.
3. Remove and discard the damaged or worn
out wheel and replace with a new wheel.
New wheels for the Model G2790 are available through the Grizzly catalog. Check the
latest catalog for ordering and price information.
4. Re-mount the flange and fence assembly.
Never allow visitors into your shop while
assembling, operating, or maintaining tools
and machinery. Keep your shop child-safe
by locking up securely when not in use, and
by providing proper supervision when children are present.
Wheel Dressing Wheel Removal
-14- G2790 Universal Knife Grinder
The following pages contain general machine
data, parts diagrams/lists, troubleshooting guide
and Warranty/Return information for your Model
G2790 Universal Knife Grinder.
If you need parts or help in assembling your
machine, or if you need operational information,
we encourage you to call our Service
Department. Our trained service technicians will
be glad to help you.
If you have comments dealing specifically with
this manual, please write to our Bellingham,
Washington location using the address in Section
3: Introduction. The specifications, drawings, and
photographs illustrated in this manual represent
the Model G2790 as supplied when the manual
was prepared. However, due to Grizzly’s policy of
continuous improvement, changes may be made
at any time with no obligation on the part of
Grizzly. Whenever possible, though, we send
manual updates to all owners of a particular tool
or machine. Should you receive one, add the new
information to this manual and keep it for reference.
We have included some important safety measures that are essential to this machine’s operation. While most safety measures are generally
universal, Grizzly reminds you that each workshop is different and safety rules should be con-
sidered as they apply to your specific situation.
We recommend you keep a copy of our current
catalog for complete information regarding
Grizzly's warranty and return policy. If you need
additional technical information relating to this
machine, or if you need general assistance or
replacement parts, please contact the Service
Department listed in Section 3: Introduction
Additional information sources are necessary to
realize the full potential of this machine. Trade
journals, woodworking magazines, and your local
library are good places to start.
SECTION 7: CLOSURE
The Model G2790 was specifically designed
for knife grinding. DO NOT MODIFY AND/OR
USE THIS MACHINE FOR ANY OTHER PURPOSE. Modifications or improper use of
this tool will void the warranty. If you are
confused about any aspect of this machine,
DO NOT use it until you have answered all
your questions. Serious personal injury may
occur.
Operating this equipment has the potential
for flying debris, which can cause eye
injury. Always wear safety glasses or goggles when operating equipment. Everyday
glasses or reading glasses only have
impact resistant lenses, they are not safety
glasses. Be certain the safety glasses you
wear meet the appropriate standards of the
American National Standards Institute
(ANSI).
Like all power tools, there is danger associated with the Model G2790 Universal Knife
Grinder. Accidents are frequently caused
by lack of familiarity or failure to pay attention. Use this tool with respect and caution
to lessen the possibility of operator injury.
If normal safety precautions are overlooked
or ignored, serious personal injury may
occur.
G2790 Universal Knife Grinder -15-
Customer Service #: (570) 326-3806 • To Order Call: (800) 523-4777 • Fax #: (800) 438-5901
GRIZZLY MODEL G2790 UNIVERSAL KNIFE GRINDER
MACHINE DATA
SHEET
Design Type.................................................................................................... Bench Model
Overall Dimensions:
Height ......................................................................................................................13"
Length ......................................................................................................................24"
Width......................................................................................................................11
1
⁄2"
Shipping Weight ..................................................................................................69 lbs.
Net Weight ..........................................................................................................55 lbs.
Box # 1 Size ..............................................................................20" L x 13" W x 13" H
Box # 2 Size ..................................................................................26" L x 5" W x 3" H
Footprint ..............................................................................................................9" x 9"
Capacities:
Maximum Blade Length............................................................................................20"
Table Tilt..........................................................................................................20° - 70°
Grinding Wheel Specifications:
Type ⁄ Grit ................................................Type 5, Straight Cup, Vitrified bond/120 Grit
Diameter ....................................................................................................................6"
Thickness ................................................................................................................1
1
⁄
2"
Bore ..........................................................................................................................
5
⁄
8"
Construction:
Base ................................................................................................................Cast Iron
Table .............................................................................................................. Cast Iron
Motor:
Type ............................................................................TEFC Capacitor Start Induction
Horsepower ..........................................................................................................
1
⁄2 HP
Amps............................................................................................................................8
Phase ⁄ Voltage ............................................................................Single Phase ⁄ 110V
Cycle ⁄ RPM..................................................................................60 Hertz ⁄ 3450 RPM
Switch ..................................................................................................On ⁄ Off Rocker
Power Transfer ..........................................................................................Direct Drive
Bearings ................................................................Shielded & Permanently Lubricated
Specifications, while deemed accurate, are not guaranteed.
REVISED 5/99
-16- G2790 Universal Knife Grinder
WARRANTY AND RETURNS
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 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.
G2790 Universal Knife Grinder -17-
PARTS DIAGRAM
-18- G2790 Universal Knife Grinder
024
025
026
027
028
029
030
031
032
033
034
035
036
037
038
039
040
041
042
043
044
045
046
Ref. # Part # Description Ref. # Part # Description
P2790001 Knob
P2790002 Knife Lock Plate
P2790003 Sliding Knife Support
P2790004 O-Ring
PN05 Nut 1/4" - 20
P2790006 Knob
P2790007 Work Plate
P2790008 Right Lock Bar
P2790009 Left Lock Bar
P2790010 Knob
P2790011 Pivot Knob
PW06 Washer
1
/
4"
P2790013 Pivot Rotation Knob
P2790014 Pivot Plate
P2790014A Degree Scale
PB09 Hex Bolt
5
/16" - 18 x 1/2"
P2790016 Tool Clamp Knob
P2790017 Tool Clamp
P2790018 Special Lock Nut
P2790019 Dressing Tool Guide
PSS02 Setscrew 5/
16" - 18 x
3
/
8"
P2790021 Power Cord
P2790022 Switch
P2790023 Cover Plate
P2790024 Rubber Base Feet
PW07 Washer
5
/
16"
PS01 Screw 10 - 24 x
1
/2"
P2790027 Capacitor
P2790028 Motor Housing
P2790029 Inner Flange
G2791 120 Grit Wheel
P2790031 Outer Flange
P2790032 Socket Cap Screw
PN02 Nut
5
/
16" - 18
P2790034 Table Lock Lever
P2790035 Table Adj. Screw
P2790036 Ball Bearings
P2790037 Handwheel
PB02 Hex Bolt
1
/
4” - 20 x
5
/
8”
P2790039 Socket Cap Screw
P2790040 Fence
P2790041 Spacer
P2790042 Table
P2790043 Decal
P2790044 Cord Clip
PW07 Washer
5
/16"
PWRN01 Wire Nut
001
002
003
004
005
006
007
008
009
110
011
012
013
014
014A
015
016
017
018
019
020
021
022
023
PARTS LIST
10. Which benchtop tools do you own? Check all that apply.
___1" x 42" Belt Sander ___6" - 8" Grinder
___5" - 8" Drill Press ___Mini Lathe
___8" Table Saw ___10" - 12" Thickness Planer
___8" - 10" Bandsaw ___Scroll Saw
___Disc/Belt Sander ___Spindle/Belt Sander
___Mini Jointer
___Other__________________________________________________
11. How many of the machines checked above are Grizzly? ____________
12. Which portable/hand held power tools do you own? Check all that apply.
___Belt Sander ___Orbital Sander
___Biscuit Joiner ___Palm Sander
___Circular Saw ___Portable Planer
___Detail Sander ___Saber Saw
___Drill/Driver ___Reciprocating Saw
___Miter Saw ___Router
___Other__________________________________________________
13. What machines/supplies would you like Grizzly Industrial to carry?
___12" Table Saw ___Radial Arm Saw
___12" Jointer ___Panel Saw
___Combination Planer/Jointer ___Brass Hardware
___Paint & Finishing Supplies ___Lumber
___Contractor’s Supplies
___Other__________________________________________________
14. What new accessories would you like Grizzly Industrial to carry?
___Builders Hardware ___Hand Tools
___Fasteners ___Wood Components
___Other__________________________________________________
15. What other companies do you purchase your tools and supplies from?
__________________________________________________________
__________________________________________________________
16. Do you think your purchase represents good value?
___Yes ___No
17. Would you recommend Grizzly Imports to a friend?
___Yes ___No
18. Would you allow us to use your name as a reference for Grizzly customers
in your area? Note: We never use names more than three times.
___Yes ___No
19. Comments:_________________________________________________
__________________________________________________________
__________________________________________________________
__________________________________________________________
__________________________________________________________
1. How did you learn about us?
___Advertisement ___Friend
___Catalog ___Card Deck
___World Wide Web
___Other__________________________________________________
2. Which of the following magazines do you subscribe to.
___American Woodworker ___Practical Homeowner
___Cabinetmaker ___Shop Notes
___Family Handyman ___Today’s Homeowner
___Fine Homebuilding ___WOOD
___Fine Woodworking ___Wooden Boat
___Home Handyman ___Woodshop News
___Journal of Light Construction ___Woodsmith
___Old House Journal ___Woodwork
___Popular Mechanics ___Woodworker
___Popular Science ___Woodworker’s Journal
___Popular Woodworking ___Workbench
___Other__________________________________________________
3. Which of the following woodworking/remodeling shows do you watch?
___Backyard America ___The New Yankee Workshop
___Home Time ___This Old House
___The American Woodworker ___Woodwright’s Shop
___Other__________________________________________________
4. What is your annual household income?
___$20,000-$29,999 ___$60,000-$69,999
___$30,000-$39,999 ___$70,000-$79,999
___$40,000-$49,999 ___$80,000-$89,999
___$50,000-$59,999 ___$90,000 +
5. What is your age group?
___20-29 ___50-59
___30-39 ___60-69
___40-49 ___70 +
6. How long have you been a woodworker?
___0 - 2 Years ___8 - 20 Years
___2 - 8 Years ___20+ Years
7. How would you rank your woodworking skills?
___Simple ___Advanced
___Intermediate ___Master Craftsman
8. What stationary woodworking tools do you own? Check all that apply.
___Air Compressor ___Panel Saw
___Band Saw ___Planer
___Drill Press ___Power Feeder
___Drum Sander ___Radial Arm Saw
___Dust Collector ___Shaper
___Horizontal Boring Machine ___Spindle Sander
___Jointer ___Table Saw
___Lathe ___Vacuum Veneer Press
___Mortiser ___Wide Belt Sander
___Other__________________________________________________
9. How many of your woodworking machines are Grizzly? _____________
Name ____________________________________________________________________________________
Street ____________________________________________________________________________________
City ______________________________________________________________State________Zip_________
Phone Number_______________________E-Mail_______________________FAX________________________
MODEL # G2790 Universal Knife Grinder Order #______________________________________________
The following information is given on a voluntary basis. It will be used for marketing purposes to help us develop better products and services. Of
course, all information is strictly confidential.
WARRANTY CARD
FOLD ALONG DOTTED LINE
FOLD ALONG DOTTED LINE
GRIZZLY INDUSTRIAL, INC.
P.O. BOX 2069
BELLINGHAM, WA 98227-2069
Place
Stamp
Here
TAPE ALONG EDGES--PLEASE DO NOT STAPLE
Name_______________________________
Street_______________________________
City______________State______Zip______
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