Grizzly T27400 User guide

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39

32A

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READ THIS FIRST

Model T27400

***IMPORTANT UPDATE***

For Machines Mfd. Since 02/15

and Owner's Manual Printed 08/15

For questions or help with this product contact Tech Support at [phone] or [e-mail]

We recently discovered the following mistake in the owner's manual:

• Incorrect spindle bearing sizes shown.

This document provides the relevant updates to the owner's manual that no longer applies—aside from this
information, all other content in the owner's manual applies and MUST be read and understood for your own
safety. IMPORTANT: Keep this update with the owner's manual for future reference.

For questions or help, contact our Tech Support at [phone] or [e-mail].

Correct Spindle Bearings

30

29

36

35

30

29

35

REF PART # DESCRIPTION

29 PT27400029 BALL BEARING 6203Z
30 PT27400030 BALL BEARING 6203Z
35 PT27400035 BALL BEARING 6203Z
36 PT27400036 BALL BEARING 6203Z

36

COPYRIGHT © DECEMBER, 2016 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.

#WK18612 PRINTED IN CHINA

MODEL T27400

LATHE TOOL POST GRINDER

OWNER'S MANUAL

(For models manufactured since 02/15)

COPYRIGHT © AUGUST, 2015 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.

#JH17457 PRINTED IN CHINA

V1. 0 8 .15

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

Manual Accuracy ........................................................................................................................ 2

Identification ............................................................................................................................... 3

Machine Data Sheet ................................................................................................................... 4

SECTION 1: SAFETY ....................................................................................................................... 6

Safety Instructions for Machinery ............................................................................................... 6

Additional Safety for Lathe Tool Post Grinders .......................................................................... 8

SECTION 2: POWER SUPPLY ........................................................................................................ 9

SECTION 3: SETUP ....................................................................................................................... 11

Needed for Setup ..................................................................................................................... 11

Unpacking ................................................................................................................................ 11

Inventory ................................................................................................................................... 12

Cleanup .................................................................................................................................... 12

Lathe Requirements ................................................................................................................. 13

Mounting on Tool Post ............................................................................................................. 14

Adjusting Grinder Centerline Height......................................................................................... 15

Test Run ................................................................................................................................... 15

SECTION 4: OPERATIONS ........................................................................................................... 16

Operation Overview.................................................................................................................. 16

Lathe Rotation .......................................................................................................................... 17

Wheel Care .............................................................................................................................. 17

Wheel Inspection ...................................................................................................................... 18

Wheel Selection ....................................................................................................................... 18

Wheel Dressing ........................................................................................................................ 19

Tensioning/Changing Belts ...................................................................................................... 20

Installing Internal Wheel Spindle .............................................................................................. 21

Installing External Wheel Spindle............................................................................................. 23

Installing External Wheel .......................................................................................................... 24

SECTION 5: ACCESSORIES ......................................................................................................... 25

SECTION 6: MAINTENANCE......................................................................................................... 26

Schedule .................................................................................................................................. 26

Cleaning & Protecting .............................................................................................................. 26

Lathe Bedway........................................................................................................................... 26

Lubrication ................................................................................................................................ 26

SECTION 7: SERVICE ................................................................................................................... 27

Troubleshooting ........................................................................................................................ 27

SECTION 8: WIRING ...................................................................................................................... 29

Wiring Safety Instructions ........................................................................................................ 29

T27400 Wiring .......................................................................................................................... 30

SECTION 9: PARTS ....................................................................................................................... 31

Main Breakdown....................................................................................................................... 31

Accessories .............................................................................................................................. 33

Label Placement....................................................................................................................... 34

WARRANTY AND RETURNS ........................................................................................................ 37

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

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: [e-mail]

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 from the

Grizzly Technical Support

1203 Lycoming Mall Circle

Muncy, PA 17756

Phone: [phone]

Email: [e-mail]

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

Manufacture Date

Serial Number

-2-

Model T27400 (Mfd. Since 02/15)

Identification

Become familiar with the names and locations of the controls and features shown below to better understand
the instructions in this manual.

ON/OFF Toggle Switch

Motor

Belt Guard

Spindle & Quill

Spindle

Elevation

Bolt

Tool Post

Mounting Hole

External Wheel

Guard

External

Grinding Wheel

To reduce your risk of
serious injury, read this
entire manual BEFORE
using machine.

Model T27400 (Mfd. Since 02/15)

-3-

MODEL T27400

TOOL POST GRINDER

Customer Service #: [phone] • To Order Call: [phone] • Fax #: [phone]

MACHINE DATA

SHEET

Product Dimensions:

Weight ............................................................................................................................................................................. 56 lbs.

Width (side-to-side) x Depth (front-to-back) x Height .......................................................................................15 x 12 x 10 in.

Shipping Dimensions:

Type ........................................................................................................................................................................ Wood Crate

Content .......................................................................................................................................................................... Machine

Weight .............................................................................................................................................................................. 71 lbs.

Length/Width/Height ...........................................................................................................................................18 x 16 x 20 in.

Must Ship Upright .................................................................................................................................................................Yes

Electrical:

Power Requirement ........................................................................................................................ 220V, Single-Phase, 60 Hz

Full-Load Current Rating ..................................................................................................................................................... 3.5A

Minimum Circuit Size ........................................................................................................................................................... 15A

Connection Type ..................................................................................................................................................... Cord & Plug

Power Cord Included ............................................................................................................................................................Yes

Power Cord Length ............................................................................................................................................................6

1

⁄2 ft.

Power Cord Gauge .......................................................................................................................................................16 AWG

Plug Included ........................................................................................................................................................................Yes

Included Plug Type ..............................................................................................................................................................6-15

Switch Type .......................................................................................................................................... ON/OFF Toggle Switch

Motor:

Type ...................................................................................................................................................................TEFC Induction

Horsepower ........................................................................................................................................................................

3

⁄4 HP

Voltage ............................................................................................................................................................................... 220V

Phase .................................................................................................................................................................... Single-Phase

Amps ................................................................................................................................................................................... 3.5A

Speed .........................................................................................................................................................................3450 RPM

Cycle ................................................................................................................................................................................. 60 Hz

Power Transfer ........................................................................................................................................................... Belt Drive

Bearings ............................................................................................................................. Shielded & Permanently Lubricated

Main Specifications:

Operation Information

External Grinding Wheel Speed .......................................................................................................................4500 RPM

External Grinding Wheel Size (Depth x Width x Bore) ............................................................................... 6 x

3

⁄4 x 5⁄8 in.

Internal Grinding Wheel Speed .....................................................................................................................18,500 RPM

Internal Grinding Wheel Size (Depth x Width x Bore) ...............................................................................

7

⁄16 x 9⁄16 x 1⁄4 in.

Internal Grinding Wheel Spindle Thread ...................................................................................................................M6-1

Max. Tool Post Diameter Capacity ............................................................................................................................. 1 in.

Lathe Swing Compatibility ................................................................................................................................12 – 22 in.

Height Range of Grinder Spindle Center Line from Compound Slide ...........................................................1

5

⁄8 – 2 5⁄

8

in.

Mounting Hole, Slotted (Depth x Length) ........................................................................................................ 25 x 37mm

Machine Data Sheet

-4-

Model T27400 (Mfd. Since 02/15)

Construction

Body Construction ..............................................................................................................................................Cast Iron

Spindle ........................................................................................................... Balanced, Hardened & Ground Alloy Steel

Paint ...................................................................................................................................................................Urethane

Other Specifications:

Country Of Origin .............................................................................................................................................................. China

Warranty ........................................................................................................................................................................... 1 Year

Serial Number Location ............................................................................................................................ ID Label on Machine

Features:

Mounts directly to lathe tool post
Balanced, hardened alloy steel spindle
Fine vertical height adjustment
Diamond-tipped dresser
Wheel bushing for 32mm bore external wheels
Toolbox with service tools
6" x

3

⁄4" Aluminum-oxide 60-grit external grinding wheel

3

⁄4" x 3⁄4" Aluminum-oxide 60-grit internal grinding wheel

Interchangeable spindles for external or internal grinding

Model T27400 (Mfd. Since 02/15)

-5-

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.

This symbol is used to alert the user to useful information about

NOTICE

proper operation of the machine.

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 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-

-6-

Model T27400 (Mfd. Since 02/15)

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 [phone].

Model T27400 (Mfd. Since 02/15)

-7-

Additional Safety for Lathe Tool Post

USE INCLUDED PULLEY & WHEEL

PROPERLY TIGHTEN SPINDLE NUT.

Grinders

Serious injury or death can occur from getting clothing, jewelry, or long hair entangled in
moving parts or pinch points. Flying debris created by broken grinding wheels or grinding
operations can blind or strike nearby operators with deadly force. Rotating grinding wheel will
quickly remove skin upon contact. To reduce the risk of operator (or bystander) injury or death,
anyone operating machine MUST completely heed the warnings below.

PROPERLY SECURE GRINDER & ENSURE
SAFE WORK AREA. Unexpected movement of

grinder could cause grinding wheel to break or fly
apart during operation. Before use, verify grinder
is properly secured in place before operation and
nearby area is free of explosive or flammable
materials.

SAFELY START GRINDER. If a wheel is dam-

aged, it will usually fly apart shortly after start­up. To protect yourself, always stand to side of
grinder when turning it ON and allow it to run for
at least one minute before standing in front of it.

PERFORM VISUAL INSPECTION. Verify that
grinding wheels are free of cracks, chips, or dents
in wheel surface before installing. DO NOT use
wheels that have been dropped or otherwise have
any of these problems—they could break apart
during operation.

PERFORM RING TEST. Perform a “ring test”

on external grinding wheel before installation
to ensure it is safe to use. A wheel that does
NOT pass ring test may break or fly apart during
operation. DO NOT use it!

AVOID HAND & WHEEL CONTACT. Position
your hands at a safe distance from wheel when
grinding. Avoid wearing gloves as they may get
caught in spinning wheel or pulleys, resulting in
serious entanglement injuries.

USE CORRECT WHEEL FLANGES. Only use
flanges included with grinder when mounting
external wheel. Other flanges may not properly
secure wheel. DO NOT use warped or damaged
flanges, and always use paper discs (blotters)
between wheel and flanges to reduce risk of
flanges cracking external wheel when tightened.

CHECK FOR VIBRATING WHEEL. Never
perform grinding operations on a wheel that is
vibrating. Immediately replace wheel or shaft
bearings.

WEAR EYE, FACE, & LUNG PROTECTION.

Grinding ejects small particles at a high rate of
speed. These particles can cause eye injuries or
blindness, skin injuries, or respiratory damage.
ALWAYS wear approved clothing, safety goggles,
face shield, and a respirator when grinding.

CHECK WHEEL SPEED RATING. Wheels

operated faster than their rated speed may
break apart during operation. Before
mounting a new wheel, be sure wheel
RPM rating is equal or higher than speed of
grinder. Never use unmarked wheels.

AVOID ENTANGLEMENT. Becoming entangled
in moving parts of grinder can cause pinching
and crushing injuries. To avoid these hazards, DO
NOT wear loose clothing, gloves, or jewelry, and
tie back long hair. Keep all guards in place and
secure.

-8-

HARDWARE. Using pulleys or wheel mounting
hardware other than those supplied with this
grinder could cause pulleys or wheels to come
loose during operation, causing impact injuries.

Only tighten wheel spindle nut enough to drive
wheel and prevent slippage. Overtightening can
crack wheel, which would cause it to fly apart dur­ing operation.

Model T27400 (Mfd. Since 02/15)

SECTION 2: POWER SUPPLY

Electrocution, fire, or
equipment damage may
occur if machine is not
correctly grounded and
connected to the 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:

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.

Availability

supply.

Full-Load Current Rating

Circuit Information

property, consult an electrician if you are
unsure about wiring practices or electrical
codes in your area.

Full-Load Current Rating at 220V .... 3.5 Amps

Model T27400 (Mfd. Since 02/15)

Circuit Requirements

Nominal Voltage ........................................220V

Cycle .......................................................... 60 Hz

Phase ........................................... Single-Phase

Power Supply Circuit ......................... 15 Amps

Plug/Receptacle ......................................... 6-15

-9-

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 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.

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!

No adapter should be used with plug. If

GROUNDED

6-15 RECEPTACLE

Current Carrying Prongs

6-15 PLUG

Serious injury could occur if you connect
machine to power before completing setup
process. DO NOT connect to power until
instructed later in this manual.

Grounding Prong

Figure 1. Typical 6-15 plug and receptacle.

plug does not fit available receptacle, or if
machine must be reconnected for use on a
different type of circuit, reconnection must
be performed by an electrician or qualified
service personnel, and it must comply with
all local codes and ordinances.

-10 -

Extension Cords

If you must use an extension

Minimum Gauge Size ...........................16 AWG

Maximum Length (Shorter is Better).......50 ft.

Model T27400 (Mfd. Since 02/15)

SECTION 3: 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]

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 condi­tion of your shipment, inventory the contents.

The following items are needed, but not included,
for the setup/assembly of this machine.

This machine and its
components are very
heavy. Get lifting help or

ment such as a forklift to

Needed for Setup

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!

Wear safety glasses during
the entire setup process!

Description Qty

• Safety Glasses (for each person) ............... 1

• Solvent/Cleaner .......................................... 1

• Shop Rags .................................................. 1

• Brass Hammer ........................................... 1

• Another Person .......................................... 1

Unpacking

use power lifting equip-

move heavy items.

Children and visitors may be
seriously injured if unsuper­vised around this machine.
Lock entrances to the shop
or disable start switch or
power connection to prevent
unsupervised use.

for advice.

SUFFOCATION HAZARD!
Keep children and pets away
from plastic bags or packing
materials shipped with this
machine. Discard immediately.

Model T27400 (Mfd. Since 02/15)

-11-

Inventory

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.

amount of cleaner/degreaser, then let it soak

3.

off easily. If you have a plastic paint scraper,
scrape off as much as you can first, then wipe

4.

then coat all unpainted surfaces with a quality
metal protectant to prevent rust.

Gasoline and petroleum
products have low flash
points and can explode
or cause fire if used to
clean machinery. A v oi d
using these products
to clean machinery.

Many cleaning solvents
are toxic if inhaled. Only
work in a well-ventilated
area.

NOTICE

Avoid chlorine-based solvents, such as
acetone or brake parts cleaner, that may
damage painted surfaces.

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.

Small Item Inventory (Figure 2) Qty

A. Open-Ended Wrench 8/10mm .................... 1

B. Open-Ended Wrench 12/14mm .................. 1

C. Open-Ended Wrench 17/19mm .................. 1

D. Open-Ended Wrench 24/27mm .................. 1

E. Internal Spindle .......................................... 1

F. Wheel Dresser Tool w/Dresser Rod ........... 1

G. Hex Wrenches 4, 5, 8mm ..................... 1/Ea.

H. Toolbox ....................................................... 1

I. Flat Belt 22 x 670mm ................................. 1

J. Phillips Screwdriver #2 ............................... 1

F

G

E

D

C

B

A

Figure 2. Model T27400 inventory.

J

Cleanup

H

Put on safety glasses.

Coat the rust preventative with a liberal

I

for 5–10 minutes.

Wipe off the surfaces. If your cleaner/degreas-

er is effective, the rust preventative will wipe

off the rest with the rag.

Repeat Steps 2–3 as necessary until clean,

-12-

Avoid chlorine-based solvents, such as
acetone or brake parts cleaner, that may
damage painted surfaces.

Model T27400 (Mfd. Since 02/15)

Lathe Requirements

The Model T27400 is designed to fit on metal
lathes with a 12"–22" swing and a 1" diameter
tool post.

IMPORTANT: Although the Model T27400 will fit
on lathes meeting the size requirements specified
above, this does not imply or guarantee that it will
allow enough clearance to work with the full swing
of the installed lathe. Once installed, the maximum
possible workpiece swing allowed is determined
by the distance from the tool post centerline (with
cross slide positioned fully backward) to the lathe
spindle centerline, minus the required installation
space for the tool post grinder (approximately 7").

External Wheel Clearance

The distance between the tool post centerline and
the outside grinding surface of a new 6" external
wheel is approximately 7" when the grinder is
installed, as illustrated in Figure 3. Ensure that
your compound slide can safely accommodate
this distance from the workpiece prior to powering
machine. Smaller lathes may require additional
compound slide adjustment, or require small
diameter workpieces.

Tool Post Size

The maximum tool post diameter the grinder can
accommodate is 1". If the diameter of your tool
post does not allow you to secure the grinder to
the compound slide without side-to-side move­ment, make a bushing for the tool post that will
keep the grinder secured in place when the tool­post nut is fully tightened down.

Note: The tool post grinder mounting hole clear­ance may not allow for the lathe's tool post lever to
rotate fully. A new tool post nut and washer combi­nation may be required to secure the grinder.

Centerline Alignment

When using an external grinding wheel, the cen­terline of the grinder spindle should be approxi­mately the same height as the lathe centerline for
proper contact with the spinning workpiece.

The grinder spindle centerline is adjustable from

5

⁄8"–21⁄8" above the top of the lathe's compound

1
slide. Measure the height to the lathe centerline
from the top of the compound slide (distance A
illustrated in Figure 3) to ensure it is within this
range. Most lathe centerlines will be within the
adjustable range. If not, re-adjust the compound
slide and place the external wheel as close to
workpiece centerline as possible.

Tool Post

Lathe Compound Slide

Height

Tension

Figure 3. External wheel alignment.

Bolt

Guard

Approx. 7"

External

Wheel

Lathe

Spindle

Centerline

Workpiece

Once the grinder centerline is adjusted, tighten
the height tension bolt and nut to secure the dove­tail in place.

IMPORTANT: You must adjust and retighten the
belt any time the centerline adjustment is changed
(see Tensioning/Changing Belts on Page 20).

A

Model T27400 (Mfd. Since 02/15)

-13-

Mounting on Tool

Post

The T27400 mounts directly to the tool post on
the compound slide of the lathe. On small lathes,
ensure proper workpiece clearance by mounting
the grinder before attaching a workpiece to the
lathe chuck.

To mount grinder on the lathe tool post:

1. DISCONNECT LATHE FROM POWER!

2. Remove tool post nut (or lever) from lathe,

and remove tool holder or any other tool
hardware from tool post stud.

3. Rotate compound slide parallel to lathe
bedway, then tighten rotation locks on slide.

4. Place grinder over tool post on compound
slide, and position it so grinding wheel faces
lathe centerline, as shown in Figure 4.

Unexpected movement of grinder on tool
post could cause grinding wheel to break
apart and strike operator or bystanders
with great force. Always make sure grinder
is firmly secured to tool post so there is no
side-to-side or up-and-down movement.

5. Use tool post nut to firmly secure grinder in

place, as shown in Figure 5.

Note: Tool post mounting hole of grinder

will accept tool post up to 1" in diameter.
However, if diameter or height of your tool
post allows for side-to-side or up-and-down
movement of grinder when nut is fully tight­ened, you will need to fabricate a custom
washer for tool post.

Figure 4. Grinder correctly mounted to lathe

compound slide.

Tool Post

Nut

Figure 5. Tool post lock nut and example of a

custom washer.

Ensure power cord is positioned away
from moving parts and does not pose an
entanglement hazard.

-14-

Model T27400 (Mfd. Since 02/15)

Adjusting Grinder

Once assembly is complete, test run the machine
to ensure it is properly connected to power and
safety components are functioning properly.

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

Centerline Height

The centerline of the external grinding wheel must
closely align with the centerline of the workpiece
to avoid damage to the wheel guard or the
workpiece (see Figure 3 on Page 13). The tool
post grinder centerline height can be adjusted
from 1
pound slide. Once the grinder centerline height is
properly adjusted, the height tension bolt and nut
must be tightened to secure the centerline height
in place.

Tools Needed Qty

Wrench 18mm ................................................... 1

Hex Wrench 8mm .............................................. 1

To adjust tool post grinder centerline height:

1. DISCONNECT LATHE AND GRINDER

5

⁄8" to 2 1⁄8" above the top of the lathe's com-

FROM POWER!

Test Run

Troubleshooting

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.

2. Loosen hex bolt on left side of spindle hous-
ing (see Figure 6).

3. Rotate elevation bolt (see Figure 6) as nec-

essary to align grinder spindle centerline with
lathe spindle centerline. Rotate bolt counter­clockwise to raise grinder spindle or clock­wise to lower it.

Note: Numerical increments on elevation

wheel are for your reference only and do not
indicate actual height of spindle.

Elevation

Bolt

Hex Bolt

Figure 6. Adjusting spindle centerline height.

4. When you are satisfied with adjustment, re-

tighten hex bolt to secure setting.

Model T27400 (Mfd. Since 02/15)

may result in malfunction or unexpect­ed results that can lead to serious injury,
death, or machine/property damage.

To test run machine:

1. Clear all setup tools away from machine.

2. Connect machine to power supply.

3. Turn machine ON, verify motor operation,

and then turn machine OFF.

The motor should run smoothly and without

unusual problems or noises.

-15-

operations

The purpose of this overview is to provide the nov­ice machine operator with a basic understanding
of how the machine is used during operation, so
the

discussed later

in this manual

Due to the generic nature of this overview, it is

not

more about specific operations,
manual and
rienced
research outside of this manual by reading "how­to" books, trade magazines, or websites.

To reduce your risk of
serious injury, read this
entire manual BEFORE

SECTION 4: OPERATIONS

Operation Overview

To complete a typical operation, the operator
does the following:

1. Examines workpiece to make sure it is suit-

able for grinding.

machine controls/components

are easier to understand.

intended to be an instructional guide. To learn

read this entire

seek additional training from expe-

machine operators, and do additional

using machine.

To reduce risk of eye or face injury from
flying chips, always wear approved safety
glasses, face shield and respirator when
operating this machine.

2. Correctly installs desired grinding wheel for

operation.

3. Properly secures workpiece in lathe.

4. Makes sure tool post grinder is setup cor-

rectly.

5. Turns lathe ON.

6. If necessary, begins coolant flow to workpiece.

7. Turns tool post grinder ON.

8. Using lathe slide controls, slowly feeds grind-

ing wheel into and along surface of workpiece.

9. When operation is complete, turns lathe and
grinder OFF.

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.

-16 -

Keep hair, clothing, and
jewelry away from mov­ing parts at all times.
Entanglement can result
in death, amputation, or
severe crushing injuries!

Model T27400 (Mfd. Since 02/15)

Lathe Rotation

Wheel Care

To produce the best results, use a test piece
similar to workpiece to verify proper lathe spindle
speed settings. Proper lathe and grinder rotation
orientation will ensure a cleaner finished product.

Both the lathe and the external grinding wheel
should rotate clockwise, as illustrated in Figure 7.
When using the internal wheel, set lathe rotation
to counterclockwise.

External

Wheel

Workpiece

When grinding, the safety of operator and bystand­ers depends primarily on the condition of the
wheel. A wheel in poor condition could break
apart during rotation and injure the operator or
nearby bystanders.

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.

• Select the right grinding wheel for the job.
Attempting to use an external wheel for an
internal grinding operation, or vice versa, will
not work and will increase the risk of personal
injury and property damage.

• Only use wheels that are rated for the RPM
of the tool grinder.

Internal

Wheel

Figure 7. Correct lathe rotations.

Workpiece

• Mount the wheel properly (see Installing/
Removing Grinding Wheel on Page 24).

• Do not abuse the wheel by jamming it into
the workpiece with excessive force, or by
allowing the workpiece to become overly hot
during operation.

• 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 T27400 (Mfd. Since 02/15)

-17-

Wheel Inspection

3. At points shown in Figure 8, gently tap grind-

ing wheel with light, non-metallic device such
as handle of screwdriver or a wooden mallet.

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. Before installing any grinding wheel,
it must always be inspected for damage. A dam­aged grinding wheel can fly apart at high speeds,
throwing pieces of abrasive at the operator or
bystanders with dangerous force.

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!

4. An undamaged grinding 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.

5. If you determine from the ring test that the
grinding wheel is damaged, DO NOT use it!

Wheel Selection

The Model T27400 accepts Type 1 grinding
wheels with a
grinder is an aluminum-oxide wheel for grinding
HSS. A diamond wheel is also available for grind­ing carbide steel (see Accessories on Page 25).

Generally, grinding wheels are marked in a uni­form manner by most major manufacturers.
Understanding these markings will help you
understand the capabilities of various wheels.
Always refer to the manufacturer’s grinding rec­ommendations when selecting a wheel for your
project.

1

⁄2 "–1" bore. Included with the tool

To perform a ring test:

1. Make sure wheel is clean and dry; otherwise,

you may get false results.

2. Hang the wheel in the air with a piece of cord
or string looped through hole in center. If this
is not possible, balance wheel with your fin­ger in hole.

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

WARNING

for cracks, nicks,chips

60 Grit
Grade L

Vitrified Bond

Figure 8. Ring test tapping locations.

The basic format for wheel numbering is:

Prefix

Abrasive

Type

Grit

Size

Grade

Type

Bond

Type

Typ e 1 A 60 L V

The Prefix is the manufacturer’s designation for a
particular type of grinding wheel.

The Grit Size refers to the size of the abrasive
grain in the wheel. The smaller the number, the
coarser the wheel. Grit sizes range from 8, which
is a very coarse grit used for roughing, to 220,
which is generally for fine finish work.

Grade is an indication of the hardness of the
wheel—“A” being the softest and “Z” being the
hardest.

Bond Type refers to the type of bonding material
used to hold the abrasive material. Most general­purpose wheels have a “V” indicating vitrified clay,
which provides high strength and good porosity.

-18-

Model T27400 (Mfd. Since 02/15)

Wheel Dressing

With use, the surface of the grinding wheel will fill
with metal residue and grit. When this happens,
the wheel needs to be cleaned or “dressed.”
The goal of dressing the wheel is to remove the
contaminants and make the grinding surface
even and flat to ensure good grinding results.
A diamond dressing tool or "dresser" has been
included with the T27400 for this purpose.

Tools Needed Qty

Hex Wrench 8mm .............................................. 1

Hex Wrench 2.5mm ........................................... 1

To use the included diamond dresser:

Grinding wheels can quickly remove a lot of
skin. Make sure the dresser and tool holder
are firmly secured in place, and keep your
hands a safe distance away from grinding
wheel during operation.

3. Secure the dresser into the tool holder by

tightening the set screw on tool holder.

4. Ensure tip of dresser is at or below the grind-
ing wheel centerline (see Figure 10). Adjust
tool post grinder elevation as needed (see

Adjusting Grinder Spindle Centerline on
Page 15).

1. DISCONNECT LATHE AND GRINDER

FROM POWER!

2. Using a workpiece or a section of bar stock
as a stationary mounting location, clamp the
tool holder so the dresser is perpendicular to
the grinding surface of the wheel (see Figure

9).

Note: The included diamond dresser may

need to be cut to the appropriate length to fit
your specific lathe.

Tool Holder

Diamond

Dresser

Figure 9. Tool holder clamped on a piece of

bar stock so dresser is perpendicular to grinding

wheel.

External

Wheel

Diamond

Dresser

Figure 10. Diamond dresser just below

centerline of grinding wheel.

5. Position grinding wheel so dresser is to one
side of wheel surface and slightly touching it.

6. Connect grinder to power and turn it ON, then
slowly move wheel back-and-forth across
dresser, making multiple light passes until
you are satisfied with wheel surface condi­tion.

Note: Several light passes across the dress-

er will produce the best results, with the least
amount of wear to the wheel or dresser.

Workpiece

Lathe

Spindle

Centerline

Tool

Holder

Model T27400 (Mfd. Since 02/15)

-19 -

Tensioning/

6. Place belt onto pulleys, as shown in Figure

12.

Changing Belts

The Model T27400 uses a flat belt for the internal
grinding wheel and a V-belt for the external grind­ing wheel. Proper belt alignment is essential for
belt longevity and the highest-quality workpiece
finish.

Tools Needed Qty

Wrench 27mm ................................................... 1

Hex Wrench 5mm .............................................. 1

Hex Wrench 8mm .............................................. 1

To properly tension belt:

1. DISCONNECT LATHE AND GRINDER

FROM POWER!

2. Remove belt guard to fully expose belt.

3. Loosen hex nut beneath slide mount body
(see Figure 11).

4. Rotate belt-tensioning cap screw (see
Figure 11) to move motor assembly toward

grinder spindle. Roll V-belt off pulleys and
store it in a dry, protected area for later use.

Note: Use belt-tensioning cap screw to adjust

belt tension just enough so belt stays on pul­leys when they are rotated.

External

Motor
Pulley

V-Belt

Cap Screws

Quill

External

Spindle

Pulley

Figure 12. Aligning the internal spindle and

motor pulleys.

7. Rotate motor pulley by hand several times to
make sure belt is tracking properly in middle
of each pulley, then re-tighten both cap
screws to lock quill/spindle in place.

Belt­Tensioning
Cap Screw

Hex Nut

Figure 11. Belt tensioning components.

5. Loosen both cap screws shown in Figure 12

to secure quill/spindle, then align quill/spindle
with desired motor pulley.

-20-

Model T27400 (Mfd. Since 02/15)

8. Rotate belt-tensioning cap screw to move the
motor assembly back until belt is properly
tensioned.

Note: For V-belt, proper amount of tension

is reached when belt deflects approximately

1

⁄2" with moderate pressure applied midway
between the pulleys, as shown in Figure 13.
For flat belt, deflection should be approxi­mately

3

⁄8".

Installing Internal

Wheel Spindle

The internal grinding wheel is used on the inside
surfaces of a concentric workpiece. To configure
the grinder for this type of operation, you will need
to remove the external wheel spindle (if installed),
install the internal wheel spindle, and change the
spindle pulley and belt.

V-Belt:

Approx.

Deflection

Flat Belt:

Approx.

Deflection

Figure 13. Checking for correct V-belt tension.

9. When you are satisfied with belt tension,
tighten hex nut loosened in Step 3 (see
Figure 11), and re-install belt guard.

Belt and pulleys represent serious entangle­ment hazards! ALWAYS ensure belt guard
is properly installed before connecting to
power.

1

/2"

3

/8"

Motor

Pulley

Spindle

Pulley

Figure 14. Internal wheel spindle.

Tools Needed Qty

Hex Wrench 4mm .............................................. 1

Hex Wrench 5mm .............................................. 1

Hex Wrench 8mm .............................................. 1

Wrench 14mm ................................................... 1

Wrench 24mm ................................................... 1

Phillips Screwdriver #2 ...................................... 1

Standard Screwdriver #2 ................................... 1

To install internal wheel assembly:

1. DISCONNECT LATHE AND GRINDER

FROM POWER!

Model T27400 (Mfd. Since 02/15)

2. Remove belt guard and external wheel (see
Installing External Wheel on Page 24).

Note: Store the external wheel spindle in a

dry, protected area (away from extreme tem­peratures) for later use.

3. Loosen and remove belt by turning belt­tensioning cap screw counterclockwise.

-21-

4. Remove hex nut (see Figure 15) securing
external spindle pulley, and then remove pul­ley.

Note: External spindle pulley (see Figure 15)

screw has left-hand threads.

External Motor

Pulley

Belt

Tensioning

Cap Screw

External Spindle

Pulley

Hex Nut

7. Remove external wheel spindle and install
internal wheel spindle.

Note: A standard screwdriver may be needed

to lightly separate gap in tool grinder housing
allowing spindle to slide free.

Tool Grinder Housing

Internal Wheel

Wheel Guard

Internal
Spindle

Internal Wheel Nut

Flats

Figure 15. Belt guard removed.

5. Loosen wheel guard cap screw and remove

guard from spindle.

6. Remove (2) cap screws securing spindle
(see Figure 12 on Page 20), allowing assem-
bly to slide free of tool grinder housing.

Figure 16. Internal grinding wheel installed.

8. Align grinding wheel spindle with motor pul-
ley. Refer to Tensioning/Changing Belts on
Page 20 for belt alignment and tensioning.

-22-

Model T27400 (Mfd. Since 02/15)

Installing External

Wheel Spindle

The external grinding wheel is used to grind the
outside surfaces of a concentric workpiece. To
configure the grinder for this type of operation,
you will need to remove the internal wheel spindle
(if installed), install the external wheel spindle, and
change the spindle belt.

Note: The T27400 is shipped with a factory­installed external grinding wheel. Steps required
for installing the external wheel are similar to the
steps for installing the internal wheel. Use the
photos in the Internal Wheel subsection begin­ning on Page 21 for a visual reference when fol­lowing this procedure.

Tools Needed Qty

Hex Wrench 4mm .............................................. 1

Hex Wrench 5mm .............................................. 1

Hex Wrench 8mm .............................................. 1

Wrench 14mm ................................................... 1

Wrench 24mm ................................................... 1

Phillips Screwdriver #2 ...................................... 1

Standard Screwdriver #2 ................................... 1

5. Install external spindle pulley, using a 14mm
wrench on the spindle flats to keep spindle
from turning while installing.

Note: External spindle pulley screw has left-

hand threads.

External Motor Pulley

External

Spindle

Pulley

Figure 17. External motor and spindle pulleys.

6. Align external spindle pulley with motor pul-

ley, and refer to Tensioning/Changing Belts
on Page 20 for belt alignment and tensioning.

7. Re-tighten cap screws on front of tool grinder
housing.

To install external wheel assembly:

1. DISCONNECT LATHE AND GRINDER

FROM POWER!

2. Remove belt guard, then remove flat belt from
pulley (see Tensioning/Changing Belts on

Page 20).

3. Loosen cap screws located on front of tool

grinder housing (see Figure 12), allowing
internal spindle to slide free of tool grinder
housing.

Note: A standard screwdriver may be needed

to lightly separate gap in tool grinder housing
allowing quill/spindle assembly to slide free.

4. Remove internal wheel spindle assembly,
and install external wheel spindle.

8. Install external wheel, and re-attach external
wheel guard and guard cover.

Model T27400 (Mfd. Since 02/15)

-23-

Installing External

Wheel

Inspect the condition of any grinding wheel prior to
installation. Perform a ring test on external grind­ing wheels, as described in Wheel Inspection
(see Page 18), to determine wheel condition. If
external wheel is damaged, or is worn down to
its original diameter, replace the wheel (refer to

Wheel Selection on Page 18).

Tools Needed Qty

Wrench 24mm ................................................... 1

Wrench 14mm ................................................... 1

Wrench 10mm ................................................... 1

To install/remove external grinding wheel:

1. DISCONNECT LATHE AND GRINDER

FROM POWER!

1

⁄2

4. Place a wrench on spindle flats, then unthread
and remove external wheel spindle nut and
washers, as shown in Figure 18.

Spindle Flats

Wheel

Spindle Nut

Wheel Guard

Figure 18. Removing external wheel spindle nut.

5. Replace external grinding wheel and re-install

spacer and wheel spindle nut. Re-install belt
guard.

2. Remove belt guard to access spindle.

3. Remove cap screws securing external wheel

guard cover to expose wheel spindle nut (see
Figure 12).

-24-

Model T27400 (Mfd. Since 02/15)

ACCESSORIES

Installing unapproved accessories may

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.

H2499—Small Half-Mask Respirator
H3631—Medium Half-Mask Respirator
H3632—Large Half-Mask Respirator
H3635—Cartridge Filter Pair P100

If you work around dust everyday, a half-mask
respirator can be a lifesaver. Also compatible with
safety glasses!

NOTICE

Refer to our website or latest catalog for
additional recommended accessories.

G7408—Type-1 6" x
G7409—Type-1 6" x
G7410—Type-1 6" x
G7411—Type-1 6" x

Replacement grinding wheels for the T27400 are
available in 24-, 36-, 46-, and 60-grit, and feature
nested bushings adjustable to fit
1" spindles.

3

⁄4" A24-Grit Wheel

3

⁄4" A36-Grit Wheel

3

⁄4" A46-Grit Wheel

3

⁄4" A60-Grit Wheel

1

⁄2 ", 5⁄8", 3⁄4", and

G7411

H3632

H3635

Figure 20. Half-mask respirator with disposable

cartridge filters.

G5562—SLIPIT
G5563—SLIPIT
G2871—Boeshield
G2870—Boeshield
H3788—G96
H3789—G96

®

1 Qt. Gel

®

12 Ounce Spray

®

T-9 12 Ounce Spray

®

®

Gun Treatment 12 Ounce Spray

®

Gun Treatment 4.5 Ounce Spray

T-9 4 Ounce Spray

G7408

Figure 19. Replacement external grinding

wheels for the Model T27400 Tool Post Grinder.

Model T27400 (Mfd. Since 02/15)

Figure 21. Recommended products for protect-

ing unpainted cast iron/steel parts on machinery.

-25-

SECTION 6: MAINTENANCE

Lathe Bedway

To reduce risk of shock or
accidental startup, always
disconnect machine from
power before adjustments,
maintenance, or service.

Schedule

The grinding operation generates extremely abra­sive dust particles that will wear the exposed
metal-to-metal moving parts of the lathe. When
you are finished with the grinding operation and
have removed the Model T27400 from your lathe,
clean and relubricate the exposed surfaces.

For optimum performance from your machine,
follow this maintenance schedule and refer to any
specific instructions given in this section.

Daily Maintenance:

• Check/retighten loose mounting bolts.

• Check grinding wheels for damage (see
Page 18).

• Check/repair worn or damaged wires.

• Clean and lubricate machine.

• Resolve any other unsafe condition.

Cleaning &

Protecting

Cleaning the Model T27400 is relatively easy.
Vacuum dust and grit, and wipe off the remaining
grit with a dry cloth.

NOTICE

To avoid damaging wear to the exposed
lathe metal-to-metal moving lathe parts,
thoroughly clean and re-lubricate them
after grinding operations.

Lubrication

The bearings of the Model T27400 are factory
lubricated and sealed, and they require no atten­tion unless they need replacement.

Remove the belt from the spindle pulley, then
loosen the two cap screws that secure the quill
(see Figure 22). Move the quill back-and-forth
and clean away any debris and grit, then apply a
thin coat of light machine oil to the outside surface
of the quill.

Protect the unpainted cast iron surfaces and
keep them rust-free with regular applications of
products like G96
Boeshield
Page 25 for more details).

-26-

®

T-9 (see Section 5: Accessories on

®

Gun Treatment, SLIPIT®, or

Quill

Figure 22. Cap screws to loosen when

lubricating the quill.

Model T27400 (Mfd. Since 02/15)

Cap Screws

SECTION 7: SERVICE

Review the troubleshooting and procedures in this section to fix or adjust your machine if a problem devel­ops. If you need replacement parts or you are unsure of your repair skills, then feel free to call our Technical
Support at [phone].

Troubleshooting

Motor & Electrical

Symptom Possible Cause Possible Solution

Machine does not
start or a breaker
trips.

Machine stalls or is
underpowered.

Machine has
vibration or noisy
operation.

1. Power supply switched OFF or at fault.

2. Wall circuit breaker tripped.

3. Plug/receptacle at fault/wired wrong.

4. Motor connection wired wrong.

5. Wiring open/has high resistance.

6. Motor ON/OFF switch at fault.

7. Motor at fault.

1. Feed rate/lathe speed too fast.

2. Belt slipping.

3. Motor overheated.

4. Motor wired incorrectly.

5. Plug/receptacle at fault.

6. Pulley slipping on shaft/spindle.

7. Motor bearings at fault.

8. Machine undersized for task.

9. Motor at fault.

1. Grinder incorrectly mounted to lathe.

2. Motor or component loose.

3. External wheel contacting guard.

4. Belt worn or loose.

5. Grinding wheel arbor hole not round.

6. Pulley loose.

7. Motor mount loose/broken.

8. Motor bearings at fault.

9. Motor shaft bent.

1. Ensure power supply is ON/has correct voltage.

2. Ensure circuit size is correct/replace weak breaker.

3. Test for good contacts; correct the wiring.

4. Correct motor wiring connections (Page 30).

5. Check/fix broken, disconnected, or corroded wires.

6. Replace switch.

7. Test/repair/replace.

1. Decrease feed rate/lathe speed.

2. Tension/replace belt; ensure pulleys are aligned.

3. Clean motor, let cool, and reduce workload.

4. Wire motor correctly (Page 30).

5. Test for good contacts/correct wiring.

6. Replace loose pulley/shaft/spindle.

7. Test/repair/replace.

8. Use new grinding wheel; reduce the feed rate.

9. Test/repair/replace.

1. Use bushing(s); re-tighten tool post nut.

2. Inspect/replace damaged bolts/nuts, and re-tighten
with thread locking fluid.

3. Properly align spindle pulley with motor pulley; make
sure external wheel does not contact guard.

4. Inspect/replace belt.

5. Dress/replace grinding wheel.

6. Realign/replace shaft, pulley, setscrew, and key.

7. Tighten/replace.

8. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.

9. Test with dial indicator and replace motor.

Model T27400 (Mfd. Since 02/15)

-27-

Operation

Symptom Possible Cause Possible Solution

Wavy pattern on
workpiece surface.

1. Machine vibrating.

2. Workpiece loose in clamping device.

1. Shim/tighten mounting hardware.

2. Correctly re-clamp the workpiece.

Lines on workpiece
surface.

Burned spots
or cracks in
workpiece.

Wheel dulls quickly,
grit falls off.

Wheel clogs and
workpiece shows
burn marks.

Workpiece is
ground unevenly.

1. Workpiece loose in clamping device. 1. Correctly re-clamp the workpiece.

1. Feed rate too slow.

2. Depth of cut too great.

3. Workpiece overheating.

4. Improper grinding wheel for task.

1. Depth of cut too great.

2. Wheel exposed to moisture.

3. Improper grinding wheel for task.

4. Defective wheel bonding.

1. Feed rate too slow.

2. Workpiece incorrect material.

3. Improper grinding wheel for task.

1. Workpiece not properly clamped.

2. Wheel surface worn or uneven.

3. Wheel is damaged.

1. Increase feed rate.

2. Reduce depth of cut; take multiple light passes.

3. Grind in short durations and allow workpiece to cool
in between.

4. Use correct grinding wheel for task (Page 18).

1. Reduce depth of cut; take multiple light passes.

2. Store wheel away from moisture; replace wheel.

3. Use correct grinding wheel for task (Page 18).

4. Replace wheel.

1. Increase feed rate.

2. Grind ferrous materials only.

3. Use correct grinding wheel for task (Page 18).

1. Properly re-clamp workpiece.

2. Dress wheel surface. Replace wheel if necessary.

3. Replace wheel; check new wheel before using
(Page 18).

-28-

Model T27400 (Mfd. Since 02/15)

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
[phone] 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 [phone].

The photos and diagrams
included in this section are
best viewed in color. You
can view these pages in
color at www.grizzly.com.

Model T27400 (Mfd. Since 02/15)

-29-

Junction Box

(Viewed from Top)

Run Capacitor

CBB6 12MFD

450VAC

Ground

T27400 Wiring

ON/OFF Switch

KTN KCD2

16A 250VAC

Junction Box Cover

(Viewed from Bottom)

220V 1-PH

MOTOR

Hot

220

VAC

Hot

Figure 25. ON/OFF switch.

G

Ground

6-15 Plug

Figure 23. Run capacitor.

ON/OFF

Switch

Run Capacitor

(Inside)

(As Recommended)

Junction

Box Cover

Motor

Figure 24. T27400 component locations. Figure 26. T27400 wiring.

-30-

READ ELECTRICAL SAFETY

ON PAGE 29!

Model T27400 (Mfg. Since 02/15)

SECTION 9: PARTS

Main Breakdown

1-3

16

1-2

1-4

21

10

15

1-5

22

1-1

11

1-6

62

69

70

65

66

1

15

63

6

8

5

7

8

12

18

61

60

22

26

67

14

27

20

64

63

15

13
23

4

68

17

19

42

11

66

2

59

3

41

63

15

43-1

44

32

43

71

38

47

4646

45

73

31

30

29

28

72

35

34

24

Model T27400 (Mfd. Since 02/15)

33

36

37

73A

71

39

74

46

24

25

28

29

30

31

33

34

39

37

36

35

32A

-3 1-

Main Parts List

REF PART # DES CRIP TIO N REF PART # DES CRIP TIO N

1 PT27400001 MOTOR 3/4HP 220V 1-PH 31 PT27400031 WAVY WASHER 40MM
1-1 PT27400001-1 MOTO R FAN 32 PT27400032 EXTERNAL SPINDLE
1-2 PT27400001-2 MOTO R FAN CO VER 32A PT27400032A EXTERNAL SPINDLE ASSEMBLY
1-3 PT27400001-3 R CAPACITOR 12M 450V 2-3/8 X 1-5/8 33 PT27400033 QUILL COVER
1-4 PT27400001-4 BALL BEARING 6202ZZ (F) 34 PT27400034 WAVY WASHER 40MM
1-5 PT27400001-5 BALL BEARING 6203ZZ (R) 35 PT27400035 ANGULAR CONTACT BEARING 7203
1-6 PT27400001-6 MOTO R CONTRO L BOX 36 PT27400036 ANGULAR CONTACT BEARING 7203
2 PT27400002 HEX BOLT M8-1.25 X 20 37 PT27400037 QUILL LOCK COLLAR
3 PT27400003 FLAT WASHE R 8MM 38 PT27400038 V-BELT M26 3L260
4 PT27400004 ON/ OFF RO CKE R SWI TCH KCD2 250V 39 PT27400039 QUILL END CAP (REAR)
5 PT27400005 MOTOR PULLEY 41 PT27400041 CAP SCREW M5-.8 X 16
6 PT27400006 I NNE R BE LT G UARD 42 PT27400042 CAP SCREW M6-1 X 16
7 PT27400007 CAP SCREW M6-1 X 25 43 PT27400043 GRINDING WHEEL TYPE-1 150 X 20 X 32MM A60
8 PT27400008 HEX NUT M6 -1 43-1 PT27400043-1 BUSHING 16ID X 32OD X 18
10 PT27400010 OUTER BELT GUARD 44 PT27400044 I NNE R WHEE L HUB
11 PT27400011 PHLP HD SCR M4-.7 X 6 45 PT27400045 OUTER WHEE L HUB
12 PT27400012 BELT TENSIONING SHAFT M10-1.5 46 PT27400046 HEX NUT M1 6- 1. 5
13 PT27400013 CUT WASHE R 18 MM 47 PT27400047 WHEEL GUARD PLATE
14 PT27400014 MOTOR BASE 59 PT27400059 LOCK WASHER 8MM
15 PT27400015 FLAT WA SHE R 5MM 60 PT27400060 LOCK WASHER 12MM
16 PT27400016 CAP SCREW M5-.8 X 10 61 PT27400061 HEX NUT M12-1.75
17 PT27400017 SPINDLE ELEVATION BOLT M10-1.5 62 PT27400062 POWER CORD 16G 3W 66" 6-15P
18 PT27400018 CAP SCREW M5-.8 X 10 63 PT27400063 CAP SCREW M5-.8 X 20
19 PT27400019 BASE CASTING 64 PT27400064 STRAIN RELIEF PG19 TYPE-3
20 PT27400020 MOTOR A DJ USTI NG NUT 65 PT27400065 PHLP HD SCR M4-.7 X 15
21 PT27400021 HEX BOLT M12-1.75 X 120 66 PT27400066 FLA T WAS HER 4 MM
22 PT27400022 FLAT WASHER 12MM 67 PT27400067 PHLP HD SCR M4-.7 X 6
23 PT27400023 HEX NUT M1 8- 1. 5 68 PT27400068 EXTERNAL WHEEL GUARD
24 PT27400024 HEX NUT M10-1.5 LH 69 PT27400069 HEX NUT M4 -. 7
25 PT27400025 EXTERNAL SPINDLE PULLEY 70 PT27400070 PLASTIC SPACER
26 PT27400026 QUILL HOUSING 71 PT27400071 FLAT WA SHE R 7MM
27 PT27400027 CAP SCREW M6-1 X 16 72 PT27400072 FLAT BELT PULLEY
28 PT27400028 QUI LL END CA P ( FRONT) 73 PT27400073 I NTE RNAL SP I NDLE
29 PT27400029 ANGULAR CONTACT BEARING 7203 73A PT27400073A INTERNAL SPINDLE ASSEMBLY
30 PT27400030 ANGULAR CONTACT BEARING 7203 74 PT27400074 INT GRINDER WHEEL 3/4" X 3/4" X 1/4" A60

-32-

Model T27400 (Mfd. Since 02/15)

57

Accessories

58

48

56

55

53

52

51

REF PART # DESCRIPTION REF PART # DESCRIPTION

48 PT27400048 DRESSER TOOL ASSEMBLY 53 PT27400053 WRENCH 24 X 27MM OPEN-ENDS
48-1 PT27400048-1 DIAMOND DRESSER 54 PT27400054 SCREWDRIVER PHILLIPS #2
48-2 PT27400048-2 CAP SCREW M10-1.5 X 90 55 PT27400055 HEX WRENCH 4MM
49 PT27400049 FLAT BELT 22 X 670MM 56 PT27400056 HEX WRENCH 5MM
50 PT27400050 WRENCH 8 X 10MM OPEN-ENDS 57 PT27400057 HEX WRENCH 8MM
51 PT27400051 WRENCH 12 X 14MM OPEN-ENDS 58 PT27400058 TOOLBOX
52 PT27400052 WRENCH 17 X 19MM OPEN-ENDS

48-2

48-1

54

49

50

Model T27400 (Mfd. Since 02/15)

-33-

75

Label Placement

78

77

76

81

REF PART # DESCRIPTION REF PART # DESCRIPTION

75 PT27400075 MACHINE ID LABEL 79 PT27400079 GRIZZLY GREEN TOUCH-UP PAINT
76 PT27400076 EYE/LUNG INJURY HAZARD LABEL 80 PT27400080 DISCONNECT POWER LABEL
77 PT27400077 READ MANUAL LABEL 81 PT27400081 ENTANGLEMENT WARNING LABEL
78 PT27400078 ELECTRICITY LABEL

80

79

Safety labels warn about machine hazards and ways to prevent injury. The owner of this machine
MUST maintain the original location and readability of the labels on the machine. If any label is
removed or becomes unreadable, REPLACE that label before using the machine again. Contact
Grizzly at [phone] or www.grizzly.com to order new labels.

-34-

Model T27400 (Mfd. Since 02/15)

WARRANTY CARD

Name _____________________________________________________________________________

Street _____________________________________________________________________________

City _______________________ State _________________________ Zip _____________________

Phone # ____________________ Email _________________________________________________

Model # ____________________ Order # _______________________ Serial # __________________

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.

1. How did you learn about us?
____ Advertisement ____ Friend ____ Catalog
____ Card Deck ____ Website ____ Other:

2. Which of the following magazines do you subscribe to?

____ Cabinetmaker & FDM
____ Family Handyman
____ Hand Loader
____ Handy
____ Home Shop Machinist
____ Journal of Light Cont.
____ Live Steam
____ Model Airplane News
____ Old House Journal
____ Popular Mechanics

3. What is your annual household income?
____ $20,000-$29,000 ____ $30,000-$39,000 ____ $40,000-$49,000
____ $50,000-$59,000 ____ $60,000-$69,000 ____ $70,000+

CUT ALONG DOTTED LINE

4. What is your age group?
____ 20-29 ____ 30-39 ____ 40-49
____ 50-59 ____ 60-69 ____ 70+

5. How long have you been a woodworker/metalworker?
____ 0-2 Years ____ 2-8 Years ____ 8-20 Years ____20+ Years

6. How many of your machines or tools are Grizzly?
____ 0-2 ____ 3-5 ____ 6-9 ____ 10+

____ Popular Science
____ Popular Woodworking
____ Precision Shooter
____ Projects in Metal
____ RC Modeler
____ Rie
____ Shop Notes
____ Shotgun News
____ Today’s Homeowner
____ Wood

____ Wooden Boat
____ Woodshop News
____ Woodsmith
____ Woodwork
____ Woodworker West
____ Woodworker’s Journal
____ Other:

7. Do you think your machine represents a good value? _____Yes _____No

8. Would you recommend Grizzly Industrial to a friend? _____Yes _____No

9. Would you allow us to use your name as a reference for Grizzly customers in your area?
Note: We never use names more than 3 times. _____Yes _____No

10. Comments: _____________________________________________________________________

_________________________________________________________________________________

_________________________________________________________________________________

_________________________________________________________________________________

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

WARRANTY AND RETURNS

We shall in no event be liable for death, injuries to persons or property or for incidental, contingent, special,

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.

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.