Grizzly G0728 User manual

Models G0728, G0729, G0730
& G0731
VERTICAL MILLING MACHINES
OWNER'S MANUAL
(For models manufactured since 11/11)
COPYRIGHT © DECEMBER, 2011 BY GRIZZLY INDUSTRIAL, INC., REVISED FEBRUARY, 2013 (TR)
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#KN14570 PRINTED IN TAIWAN

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 compre-
hension, 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 equip-
ment, such as those dust masks that are specially designed to filter
out microscopic particles.

Table of Contents
INTRODUCTION............................................... 2
Manual Accuracy ........................................... 2
Contact Info.................................................... 2
Machine Description ...................................... 2
Identification ................................................... 3
Machine Data Sheet ...................................... 4
SECTION 1: SAFETY....................................... 6
Safety Instructions for Machinery .................. 6
Additional Safety Instructions For Mills .......... 8
SECTION 2: POWER SUPPLY ........................ 9
SECTION 3: SETUP ....................................... 11
Setup Safety ................................................ 11
Needed for Setup ......................................... 11
Unpacking .................................................... 11
Inventory ...................................................... 12
Cleanup ........................................................ 12
Site Considerations ...................................... 13
Moving & Placing Base Unit ........................ 14
Mounting ...................................................... 15
Assembly ..................................................... 16
Initial Lubrication ......................................... 16
Power Connection........................................ 17
Test Run ...................................................... 17
Spindle Break-In .......................................... 18
SECTION 4: OPERATIONS ........................... 19
Operation Safety .......................................... 19
Basic Controls .............................................. 19
Table Movement .......................................... 20
Head Tilting .................................................. 22
Turret Rotation ............................................. 23
Tramming Spindle ........................................ 24
Adjusting Spindle Speed .............................. 25
Downfeed Controls ...................................... 26
Loading/Unloading Tooling .......................... 27
SECTION 5: ACCESSORIES ......................... 28
SECTION 6: MAINTENANCE......................... 29
Schedule ...................................................... 29
Cleaning & Protecting .................................. 29
Lubrication ................................................... 29
V-Belt Tensioning......................................... 31
SECTION 7: SERVICE ................................... 32
Troubleshooting ........................................... 32
Adjusting Gibs .............................................. 34
Adjusting Backlash....................................... 35
SECTION 8: WIRING...................................... 36
Wiring Safety Instructions ............................ 36
Wiring ........................................................... 37
SECTION 9: PARTS....................................... 38
WARRANTY AND RETURNS ........................ 54

-2- Models G0728–31 (Mfg. Since 11/11)
INTRODUCTION
We stand behind our machines. If you have any
service questions, parts requests or general ques-
tions about the machine, please call or write us at
the location listed below.
Grizzly Industrial, Inc.
1203 Lycoming Mall Circle
Muncy, PA 17756
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
If you have any comments regarding this manual,
please write to us at the address below:
Grizzly Industrial, Inc.
C/O Technical Documentation Manager
P.O. Box 2069
Bellingham, WA 98227-2069
Email: [email protected]
Contact Info
Machine Description
We are proud to offer this manual with your new
machine! We've made every effort to be exact
with the instructions, specifications, drawings,
and photographs of the machine we used when
writing this manual. However, sometimes we still
make
an occasional mistake.
Also, owing to our policy of continuous improve-
ment, your machine may not exactly match the
manual
.
If you find this to be the case, and the dif-
ference between the manual and machine leaves
you in doubt,
check our website for the latest
manual update or call technical support for help.
Before calling, find the manufacture date of your
machine by looking at the date stamped into the
machine ID label (see below). This will help us
determine if the manual version you received
matches the manufacture date of your machine.
For your convenience, we
post all available man
-
uals and
manual updates for free
on our website
at
www.grizzly.com. Any updates to your
model
of
machine will be reflected in these documents
as soon as they are complete.
Manufacture Date
of Your Machine
Manual Accuracy
The G0728/G0729/G0730/G0731 Vertical Milling
machines are knee mills with 3-axis table move-
ment and 9 speeds designed for milling solid
materials. The turret and head pivot, increasing
versatility for cutting operations. These are great
mills for basic machine operations, such as slot
and keyway cutting, planing, and drilling.

Model G0728–31 (Mfg. Since 11/11) -3-
Figure 1. Vertical mill identification (Model G0728 shown).
Identification
Front View
Rear View
V-Belt Cover
Longitudinal Limit Stop Track
Cross Feed Handwheel
Motor 1
1⁄2 H P
110V/220V, Single
Phase
Knee
Y-Axis Feed Limit Stop
Track
ON/OFF Spindle Direction Switch
V-Belt Tension Adjustment Bolt
Coarse Downfeed
Handle
Downfeed Selector
Turret
Z-Axis Crank Handle
One-Shot Oiler
Base
Splash
Pan
Column
Spindle Bearing Oil Cup
X-Axis Crank Handwheel
Fine Downfeed Handwheel

-4- Models G0728–31 (Mfg. Since 11/11)
Machine Data Sheet
data sheet
MODEL G0728/G0729/G0730/G0731
VERTICAL MILLING MACHINES
Model Number G0728 G0729 G0730 G0731
Product Dimensions
Weight 660 lbs. 671 lbs. 924 lbs. 935 lbs.
Width x Depth x Height 45
3⁄4" x 49 3⁄4" x 68" 40 1⁄2" x 42 3⁄4" x 67"
Footprint Size (Length x Width) 27
1⁄2" x 21" 19" x 36"
Shipping Dimensions
Type Wood Crate
Content Machine
Weight 770 lbs. 781 lbs. 1078 lbs. 1089 lbs.
Length x Width x Height 42" x 42" x 71" 44" x 44" x 76"
Electrical
Power Requirement 110V/220V, Single-Phase, 60 Hz
Prewired Voltage 110V
Full Load Current Rating 18A at 110V; 9A at 220V
Minimum Circuit Size 20A at 110V; 15A at 220V
Switch Forward/Reverse Rotary Switch
Switch Voltage 110V/220V
Cord Length 72"
Cord Gauge 14 AWG
Plug Included Yes
Included Plug Type NEMA 5-15
Recommended Plug/Outlet Type NEMA 6-15 for 220V
Motor
Type TEFC Capacitor Start Induction
Horsepower 1
1⁄2
Voltage 110V/220V
Prewired 110V
Phase Single-Phase
Amps 18A/9A
Speed 1725 RPM
Cycle 60 Hz
Number of Speeds 1
Power Transfer V-Belt Drive
Bearing Shielded and Permanently Lubricated
Operation Info
Spindle Travel 3" 3
1⁄2"

Model G0728–31 (Mfg. Since 11/11) -5-
Model Number G0728 G0729 G0730 G0731
Table Info
Table Length 26" 30"
Table Width 6
1⁄8" 8"
Table Thickness 1
3⁄4" 2"
Number of T-Slots 3
T-Slots Width 9⁄16"1⁄2"
T-Slots Height 13⁄16"7⁄8"
T-Slots Centers 1
11⁄16" 2 3⁄16"
Stud Size 3⁄8"
Operation Info (cont'd)
Swing 13" 14"
Longitudinal Table Travel 15
5⁄8" 18"
Cross Table Travel 6" 7
3⁄4"
Knee Travel 13
1⁄2" 17 3⁄4"
Head Swivel (Left-to-right) 45° Left/Right
Turret/Column Swivel (Left and Right) 360°
Max. Distance Spindle to Column 6
1⁄2" 7"
Max. Distance Spindle to Table 12
1⁄4" 20"
Drilling Capacity for Cast Iron 1"
Drilling Capacity for Steel 3⁄4"
Number of Vertical Spindle Speeds 9
Range of Vertical Spindle Speeds
(RPM)
230, 320, 570, 670, 1200, 1420, 1650,
2170, 2520
270, 420, 490, 950, 1110, 1410, 1720,
2050, 3200
Quill Diameter 2.950"
Model Number G0728 G0729 G0730 G0731
Construction
Spindle Housing/Quill Chrome-Plated Cast Iron Chrome-Plated Steel
Table Precision-Ground Cast Iron
Head/Column/Base Cast Iron
Stand Stamped Steel Cast Iron
Paint Epoxy
Other Specifications
Warranty 1 Year
Country of Origin Taiwan
Leadscrew Info
Leadscrew Diameter 7⁄8"
Leadscrew TPI 8 TPI
Leadscrew Length 35" 41"
Spindle Info
Spindle Taper R8
End Milling Capacity 3⁄4" 1"
Face Milling Capacity 3"
Drawbar Diameter 7⁄16"
Drawbar TPI 20 TPI
Drawbar Length 12" 12
3⁄8"
Spindle Bearings Angular Contact Bearing

-6- Models G0728–31 (Mfg. Since 11/11)
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.
Always discon-
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.
OWNER’S MANUAL. Read and understand this
owner’s manual BEFORE using machine.
TRAINED OPERATORS ONLY. Untrained oper-
ators have a higher risk of being hurt or killed.
Only allow trained/supervised people to use this
machine. When machine is not being used, dis-
connect power, remove switch keys, or lock-out
machine to prevent unauthorized use—especially
around children. Make 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 machin-
ery. Never operate under the influence of drugs or
alcohol, when tired, or when distracted.
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 impor-
tance 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 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.
Indicates a potentially hazardous situation which, if not avoided,
COULD result in death or serious injury.
Indicates an imminently hazardous situation which, if not avoided,
WILL result in death or serious injury.
This symbol is used to alert the user to useful information about
proper operation of the machine.
NOTICE
Safety Instructions for Machinery
SECTION 1: SAFETY

Model G0728–31 (Mfg. Since 11/11) -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avoid
accidentalslips,whichcouldcauselossofwork-
piececontrol.
hAzARdOus dusT. Dust created while using
machinery may cause cancer, birth defects, or
long-term respiratory damage. Be aware of dust
hazardsassociatedwitheachworkpiecematerial,
andalwayswearaNIOSH-approvedrespiratorto
reduceyourrisk.
hEARING PROTECTION.Alwayswearhear-
ing 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!
INTENdEd usAGE. Only use machine for its
intendedpurposeandnevermakemodifications
not approved by Grizzly. Modifying machine or
using it differently than intended may result in
malfunctionormechanicalfailurethatcanleadto
serious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.
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dur-
ing 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rec-
ommended accessories. Using improper acces-
sories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 WIThCARE.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.
ChECK dAMAGEd PARTs. Regularly inspect
machine for any condition that may affect safe
operation.Immediatelyrepairorreplacedamaged
ormis-adjustedpartsbeforeoperatingmachine.
MAINTAIN POWER CORds. When disconnect-
ing 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intend-
edoperation,stopusingthemachine!Contactour
TechnicalSupportat(570)546-9663.

-8- Models G0728–31 (Mfg. Since 11/11)
Additional Safety Instructions For Mills
Like all machinery there is potential danger when operating this mill. Accidents are frequently
caused by lack of familiarity or failure to pay attention. Use this mill with respect and caution to
reduce the risk of operator injury. If normal safety precautions are overlooked or ignored, serious
personal injury may occur.
UNDERSTANDING CONTROLS: The mill is a
complex machine that presents severe cutting or
entanglement hazards if used incorrectly. Make
sure you understand the use and operation of all
controls before you begin milling.
SAFETY ACCESSORIES: Flying chips or debris
from the cutting operation can cause eye injury
or blindness. Always use a chip guard in addition
to your safety glasses, or use a face shield when
milling.
WORK HOLDING: Milling a workpiece that is not
properly clamped to the table could cause the
workpiece to be thrown at the operator with deadly
force! Before starting the machine, be certain
the workpiece has been properly clamped to the
table. NEVER hold the workpiece by hand during
operation.
SPINDLE SPEED: To avoid tool or workpiece
breakage that could send flying debris at the
operator and bystanders, use the correct spindle
speed and feed rate for the operation. Allow the
mill to gain full speed before beginning the cut.
SPINDLE DIRECTION CHANGE: Changing
spindle rotation direction while it is spinning could
lead to gear damage or impact injury from broken
tool or workpiece debris. ALWAYS make sure the
spindle has completely stopped before changing
spindle direction.
STOPPING SPINDLE: To reduce the risk of
hand injuries or entanglement hazards, DO NOT
attempt to stop the spindle with your hand or a
tool. Allow the spindle to stop on its own or use
the spindle brake.
CHIP CLEANUP: Chips from the operation are
sharp and hot and can cause cuts or burns. Using
compressed air to clear chips could cause them
to fly into your eyes and may drive them deep into
the working parts of the machine. Use a brush or
vacuum to clear away chips and debris from the
machine or workpiece and NEVER clear chips
while the spindle is turning.
MACHINE CARE AND MAINTENANCE:
Operating the mill with excessively worn or dam-
aged machine parts increases the risk of machine
or workpiece breakage, which could eject hazard-
ous debris at the operator. Operating a mill that
is in poor condition will also reduce the quality of
the results. To reduce this risk, maintain the mill
in proper working condition by ALWAYS promptly
performing routine inspections and maintenance.
CUTTING TOOL USAGE: Cutting tools have
very sharp leading edges—handle them with
care! Using cutting tools that are in good condition
helps to ensure quality milling results and reduces
the risk of personal injury from broken tool debris.
Inspect cutting tools for sharpness, chips, or
cracks before each use, and ALWAYS make sure
the cutting tools are firmly held in place before
starting the machine.

Model G0728–31 (Mfg. Since 11/11) -9-
SECTION 2: POWER SUPPLY
Availability
Before installing the machine, consider the avail-
ability 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 electrican or
qualified service personnel in accordance with all
applicable codes and standards.
Electrocution, fire, or
equipment damage may
occur if machine is not
correctly grounded and
connected to the power
supply.
Full-Load Current Rating
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.
Full-Load Current Rating at 110V...... 18 Amps
Full-Load Current Rating at 220V ....... 9 Amps
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 over-
loading the machine during operation and make
sure it is connected to a power supply circuit that
meets the requirements in the following section.
For your own safety and protection of
property, consult an electrician if you are
unsure about wiring practices or electrical
codes in your area.
Note: The circuit requirements listed in this man-
ual apply to a dedicated circuit—where only one
machine will be running at a time. If this machine
will be connected to a shared circuit where mul-
tiple machines will be running at the same time,
consult a qualified electrician to ensure that the
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 sup-
ply 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.)
Circuit Information
Circuit Requirements for 220V
Nominal Voltage .............................. 220V/240V
Cycle ..........................................................60 Hz
Phase ........................................... Single-Phase
Power Supply Circuit ......................... 15 Amps
Plug/Receptacle ............................. NEMA 6-15
This machine can be converted to operate on a
220V power supply (refer to Voltage Conversion
instructions). This power supply must have a veri-
fied ground and meet the following requirements:
This machine is prewired to operate on a 110V
power supply circuit that has a verified ground and
meets the following requirements:
Circuit Requirements for 110V
Nominal Voltage ............................... 110V/120V
Cycle ..........................................................60 Hz
Phase ........................................... Single-Phase
Power Supply Circuit ......................... 20 Amps
Plug/Receptacle ............................. NEMA 5-15

-10- Models G0728–31 (Mfg. Since 11/11)
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 nec-
essary, do not connect the equipment-grounding
wire to a live (current carrying) terminal.
Check with a qualified electrician or service per-
sonnel 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, discon-
nect it from power, and immediately replace it with
a new one.
Extension Cords
We do not recommend using an extension cord
with this machine.
If you must use an extension
cord, only use it if absolutely necessary and only
on a temporary basis.
Extension cords cause voltage drop, which may
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
contain a ground wire, match the required plug
and receptacle, and meet the following require-
ments:
Minimum Gauge Size ...........................14 AWG
Maximum Length (Shorter is Better).......50 ft.
Grounding Requirements
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.
Figure 2. Typical 5-15 plug and receptacle.
Grounding Prong
Neutral Hot
5-15 PLUG
GROUNDED
5-15 RECEPTACLE
Figure 3. Typical 6-15 plug and receptacle.
Grounding Prong
Current Carrying Prongs
6-15 PLUG
GROUNDED
6-15 RECEPTACLE
For 110V operation: This machine is equipped
with a power cord that has an equipment-ground-
ing wire and a grounding plug (see following fig-
ure). The plug must only be inserted into a match-
ing receptacle (outlet) that is properly installed
and grounded in accordance with all local codes
and ordinances.
For 220V operation: The plug specified under
“
Circuit Requirements for 220V” on the previous
page has a grounding prong that must be attached
to the equipment-grounding wire on the included
power cord. The plug must only be inserted into
a matching receptacle (see following figure) that
is properly installed and grounded in accordance
with all local codes and ordinances.
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
it will not fit the outlet, have a qualified
electrician install the proper outlet with a
verified ground.

Model G0728–31 (Mfg. Since 11/11) -11-
Front
View
Rear
View
1 12 94 8 5
3 10112 6 7
Ground
Ground
Ground
3
1
4
2
6
Motor Rewired for 220V
Plug Rewired for 220V
Switch Box
Motor
Prewired
for 110V
6
Ground
KONCAR
GN20
H-6681-U24
KONCAR
GN20
H-6681-U24
Start
Capacitor
500MFD
125VAC
110 VAC
5-15 Plug
(As Recommended)
Hot
Hot
Ground
Hot
Neutral
Ground
6-15 Plug
(As Recommended)
220
VAC
G
4
32
5
1
5
Ground
3
1
4
2
6
Motor prewired
for 110V
5
Figure 5. Motor configured for 220V operation.
Figure 4. Motor configured for 110V operation.
To convert this mill for 220V power, you must re-
wire the motor and install a NEMA 6-15 plug and
receptacle.
Refer to Page 40 for the full Wiring Diagram.
You MUST disconnect the
mill from the power source
before beginning any of
the following 220V conver-
sion procedures to avoid
serious personal injury or
death by electrocution.
To rewire the motor:
1. Remove the cover of the motor wiring junc-
tion box.
2. Re-configure the motor wiring by removing
wires 1, 3, 4, 2, 5, and 6 from the terminal
block (see Figure 4).
3. Replace wires 4, 1, and 6 on the terminal
block, as shown in Figure 5.
4. Use the wire nut to secure wires 2, 3, and 5
together, as shown in Figure 5.
5. Replace the cover of the motor wiring junc-
tion box.
Replacing the Plug
Replace the molded NEMA 5-15 plug with a
NEMA 6-15 by removing the original and install-
ing the new plug according to the manufacturer's
instructions.
Tools/Items Needed Qty
Phillips Head Screwdriver #2 ............................ 1
Wire Nut ............................................................ 1
Covers, guards, and safety devices on
this machine are provided for your safety.
Always keep them secured in place before
connecting the machine to power to avoid
serious personal injury.
Voltage Conversion

-12- Models G0728–31 (Mfg. Since 11/11)
Wear safety glasses dur-
ing the entire setup pro-
cess!
This machine presents
serious injury hazards
to untrained users. Read
through this entire manu-
al to become familiar with
the controls and opera-
tions before starting the
machine!
Setup Safety
SECTION 3: SETUP
This vertical mill is a
heavy machine. Serious
personal injury may
occur if safe moving
methods are not used.
To be safe, get assis-
tance and use power
equipment rated for at
least 1500 lbs. to move
the shipping crate and
remove the machine
from the crate.
The following items are needed to complete the
setup process, but are not included with your
machine:
Description Qty
• Assistants ................................................... 2
• Precision Level ........................................... 1
• External Retaining Ring Pliers ................... 1
• Safety Glasses ........................ 1 Per Person
• Lifting Straps
(rated for at least 1500 lbs.) ........................ 2
• Power Lifting Equipment
(rated for at least 1500 lbs.) ........................ 1
• Machine Mounting Hardware ..... As Needed
• Cleaning Solvent & Rags ........... As Needed
• Wrench 1⁄2" ................................................. 1
Needed for Setup
Your machine was carefully packaged for safe
transportation. Remove the packaging materials
from around your machine and inspect it. If you
discover any damage, please call us immediately
at [phone]
for advice.
Save the containers and all packing materials for
possible inspection by the carrier or its agent.
Otherwise, filing a freight claim can be difficult.
When you are completely satisfied with the condi-
tion of your shipment, inventory the contents.
Unpacking
SUFFOCATION HAZARD!
Keep children and pets away
from plastic bags or packing
materials shipped with this
machine. Discard immediately.

Model G0728–31 (Mfg. Since 11/11) -13-
Inventory
The following is a description of the main compo-
nents shipped with your machine. Lay the compo-
nents out to inventory them.
Note: If you can't find an item on this list, check
the mounting location on the machine or examine
the packaging materials carefully. Occasionally
we pre-install certain components for shipping
purposes.
Inventory: (Figure 6) Qty
A. Hex Wrench 4mm ....................................... 1
B. Hex Wrench 5mm ....................................... 1
C. Double End Wrench 12mm & 14mm .......... 1
D. Handwheel Handles ................................... 3
E. Crank Arm (not shown) ............................... 1
If any nonproprietary 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.
Cleanup
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 preven-
tative, but the following steps work well in a wide
variety of situations. Always follow the manufac-
turer’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. Put on safety glasses.
2. Coat the rust preventative with a liberal
amount of cleaner/degreaser, then let it soak
for 5–10 minutes.
3. 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.
4. Repeat Steps 2–3 as necessary until clean,
then coat all unpainted surfaces with a quality
metal protectant to prevent rust.
NOTICE
Avoid chlorine-based solvents, such as
acetone or brake parts cleaner, that may
damage painted surfaces.
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 preven-
tative, but the following steps work well in a wide
variety of situations. Always follow the manufac-
turer’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.
Put on safety glasses.
2.
Coat the rust preventative with a liberal
amount of cleaner/degreaser, then let it soak
for 5–10 minutes.
3.
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.
4.
Repeat Steps 2–3 as necessary until clean,
then coat all unpainted surfaces with a quality
metal protectant to prevent rust.
NOTICE
Avoid chlorine-based solvents, such as
acetone or brake parts cleaner, that may
damage painted surfaces.
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 preven-
tative, but the following steps work well in a wide
variety of situations. Always follow the manufac-
turer’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. Put on safety glasses.
2. Coat the rust preventative with a liberal
amount of cleaner/degreaser, then let it soak
for 5–10 minutes.
3. 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.
4. Repeat Steps 2–3 as necessary until clean,
then coat all unpainted surfaces with a quality
metal protectant to prevent rust.
NOTICE
Avoid chlorine-based solvents, such as
acetone or brake parts cleaner, that may
damage painted surfaces.
Figure 6. Model G0728 inventory.
A
BD
C

-14- Models G0728–31 (Mfg. Since 11/11)
Site Considerations
Figure 7. Minimum working clearances.
48"
68"
Weight Load
Refer to the Machine Data Sheet for the weight
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 work-
piece 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 main-
tenance and service described in this manual.
See below for required space allocation.
Physical Environment
The physical environment where the machine is
operated is important for safe operation and lon-
gevity of machine components. For best results,
operate this machine in a dry environment that is
free from excessive moisture, hazardous chemi-
cals, airborne abrasives, or extreme conditions.
Extreme conditions for this type of machinery are
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
Place this machine near an existing power source.
Make sure all power cords are protected from
traffic, material handling, moisture, chemicals,
or other hazards. Make sure to leave access to
a means of disconnecting the power source or
engaging a lockout/tagout device, if required.
Lighting
Lighting around the machine must be adequate
enough that operations can be performed safely.
Shadows, glare, or strobe effects that may distract
or impede the operator must be eliminated.
Children or untrained people
may be seriously injured by
this machine. Only install in an
access restricted location.

Model G0728–31 (Mfg. Since 11/11) -15-
Moving & Placing
Base Unit
The vertical mill is a
heavy machine. Serious
personal injury may
occur if safe moving
methods are not used.
To be safe, get assis-
tance and use power
equipment rated for at
least 1500 lbs. to move
the shipping crate and
remove the machine
from the crate.
To move and place this mill:
1. After removing the crate from the shipping
pallet, wrap lifting straps around the turret, as
shown in Figure 8, and securely attach them
to your power lifting equipment.
Figure 8. Positioning the lifting straps.
Turret
Lifting Straps
2. Use a 1⁄2" wrench to unbolt the mill from the
pallet.
3. With assistance to steady the machine, move
it as close to the prepared location as pos-
sible.
4. Lift it just enough to clear the pallet and any
floor obstacles, then situate it in its final posi-
tion.
5. When mounting the machine to the floor, use
a precision level to make sure the table is
level from side to side and front to back.
Note: If necessary, use shims to make sure
there are no gaps between the base and the
floor to avoid cracking or warping the cast
iron.

-16- Models G0728–31 (Mfg. Since 11/11)
Figure 10. Machine mount example.
Using Machine Mounts
Using machine mounts, shown in Figure 10, gives
the advantage of fast leveling and vibration reduc-
tion. The large size of the foot pads distributes
the weight of the machine to reduce strain on the
floor.
Bolting to Concrete Floors
Anchor studs and lag shield anchors with lag
bolts (see Figure 9) are two popular methods for
anchoring an object to a concrete floor. We sug-
gest you research the many options and methods
for mounting your machine and choose the best
that fits your specific application.
Figure 9. Typical fasteners for mounting to
concrete floors.
Anchor Stud
Lag Shield Anchor & Bolt
Although not required, we recommend that you
mount your new machine to the floor. Because
this is an optional step and floor materials may
vary, floor mounting hardware is not included.
Generally, you can either bolt your machine to
the floor or mount it on machine mounts. Both
options are described below. Whichever option
you choose, it is necessary to level your machine
with a precision level.
Mounting NOTICE
Anchor studs are stronger and more per-
manent alternatives to lag shield anchors;
however, they will stick out of the floor,
which may cause a tripping hazard if you
decide to move your machine.

Model G0728–31 (Mfg. Since 11/11) -17-
Assembly
Gather the needed tools and components listed in
Needed for Setup on Page 12.
To assemble the mill:
1. Secure the three handles to the handwheels,
as shown in Figures 11 and 12.
Figure 11. Right table handle attached to
handwheel (left table handle not shown).
Handle
Figure 12. Cross feed handle attached to
handwheel.
Handle
2. Remove the retaining ring from the end of the
vertical crank screw, install the crank handle,
then re-install the retaining ring, as shown in
Figure 13.
Figure 13. Vertical crank handle properly
installed.
Retaining Ring

-18- Models G0728–31 (Mfg. Since 11/11)
Initial Lubrication
This mill has numerous moving metal-to-metal
contacts that require proper lubrication to help
ensure efficient and long-lasting mill operation.
However, some lubrication must be performed
manually. Lubricate the spindle and quill before
proceeding to the Test Run or Spindle Break-In
sections.
Power Connection
After you have completed all previous setup
instructions and circuit requirements, the machine
is ready to be connected to the power supply.
To avoid unexpected startups or property dam-
age, use the following steps whenever connecting
or disconnecting the machine.
Connecting Power
Figure 15. Connecting power.
1. TurnthemachinepowerswitchOFF.
2.
 Insert the power cord plug into a
matching
power supply receptacle. The machine
is
nowconnectedtothepowersource.
Disconnecting Power
Figure 16. Disconnecting power.
1. TurnthemachinepowerswitchOFF.
2.
Graspthemoldedplugandpullit
completely
outofthereceptacle.Donotpullbythe
cord
asthismaydamagethewiresinside.
NOTICE
Failure to follow reasonable lubrication
practices as outlined in this manual for your
mill could lead to premature failure of your
mill and will void the warranty.
To lubricate the spindle do the following
steps:
1. Use the coarse downfeed handle, completely
feed out the quill and lock it in position with
the quill lock. Rub the quill down with a lightly
oiled rag.
2. While holding the coarse downfeed handle,
release the quill lock and return the quill to its
initial position.
3. Add 6 to 10 drops of oil to the spindle lubri-
cation cup and wait 5–10 minutes (see
Figure 14).
Note: The spindle lubrication cup is a gradual
gravity powered system. Extending the quill
at this stage will empty the cup too rapidly to
effectively lubricate the spindle.
Figure 14. Spindle lubrication cup location.
Spindle
Lubrication
Cup