Grizzly T21320 User Manual

MODEL T21320

12" COMBINATION 3-IN-1

SHEET METAL MACHINE

OWNER'S MANUAL

(FOR MACHINES MANUFACTURED FROM 2/09 AND LATER)

COPYRIGHT © FEBRUARY, 2009 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.

#TS11607 PRINTED IN CHINA

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

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

Contact Info ................................................................................................................................ 2

Machine Description ................................................................................................................... 2

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

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

SECTION 1: SAFETY ....................................................................................................................... 5

Safety Instructions for Machinery ............................................................................................... 5

Additional Safety Instructions for Combination 3-in-1 Sheet Metal Machines ........................... 7

SECTION 2: SETUP ......................................................................................................................... 8

Needed for Setup ....................................................................................................................... 8

Unpacking .................................................................................................................................. 8

Inventory ..................................................................................................................................... 9

Clean Up .................................................................................................................................... 9

Site Considerations .................................................................................................................. 10

Mounting ................................................................................................................................... 10

Assembly .................................................................................................................................. 11

SECTION 3: OPERATIONS ........................................................................................................... 14

Slip Roll Overview .................................................................................................................... 14

Slip Roll Tips ............................................................................................................................ 15

Flat Rolling ............................................................................................................................... 15

Creating Curves ....................................................................................................................... 16

Creating Cylinders .................................................................................................................... 18

Removing Workpiece From Rollers ......................................................................................... 20

Bending Wire ............................................................................................................................ 21

Brake Overview ........................................................................................................................ 22

Bend Allowance........................................................................................................................ 22

Bending Sheet Metal ................................................................................................................ 23

Shearing Overview ................................................................................................................... 24

Cutting Sheet Metal .................................................................................................................. 24

Material Thickness ................................................................................................................... 25

SECTION 4: ACCESSORIES ......................................................................................................... 26

SECTION 5: MAINTENANCE......................................................................................................... 28

Schedule .................................................................................................................................. 28

Cleaning & Protecting .............................................................................................................. 28

Lubrication ................................................................................................................................ 28

SECTION 6: SERVICE ................................................................................................................... 30

Troubleshooting ........................................................................................................................ 30

Shearing Blade Reversal/Replacement ................................................................................... 31

Shearing Blade Gap Adjustment .............................................................................................. 32

Brake Alignment ....................................................................................................................... 34

SECTION 7: PARTS ....................................................................................................................... 35

Main .......................................................................................................................................... 35

Label Placement....................................................................................................................... 37

WARRANTY AND RETURNS ........................................................................................................ 41

INTRODUCTION

Manual Accuracy

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 errors do
happen and we apologize for them.

Also, owing to our policy of continuous improve­ment, your machine may not exactly match the
manual. If you find this to be the case, and the dif­ference 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.

Contact Info

We stand behind our machines. If you have any
service questions, parts requests or general ques­tions 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: [e-mail]

If you have any comments regarding this manual,
please write to us at the address below:

C

/O Technical Documentation Manager

Grizzly Industrial, Inc.

P.O. Box 2069

Bellingham, WA 98227-2069

Email: [e-mail]

Manufacture Date

of Your Machine

For your convenience, we post all available man­uals 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.

Machine Description

The Model T21320 is a sheet metal machine
designed to bend and cut sheet metal up to 22
gauge in thickness and 12" in width.

The slip rollers are used to flatten or form cylin­ders, cones, and arcs in sheet metal. The brake
portion of the machine is designed to create
bends up to 90° and to fold sheet metal into
boxes, pans, or trays. With the use of the hand
crank, the upper shear blade moves down past
the fixed table blade, from left to right, to shear the
workpiece that is supported on the table.

-2-

Model T21320 (Mfg. 2/09 and Later)

Identification

Slip Rollers

Brake Fingers

Shear

Holddown

Bar

Slip Roll Thickness

Adjustment Leaf Bolts

Slip Roll Cover

Hand Crank

Slip Roll

Diameter

Adjustment

Knob

Brake Finger

Receiver

& Upper Shear

Blade

Brake & Shear

Adjustable

Shearing Table

Workbench

Mounting

Locations

Figure 1. Model T21320 identification.

Work Stop

NOTICE

If you have never used this type of machine or equipment before, WE STRONGLY RECOMMEND
that you read books, review industry trade 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.

Model T21320 (Mfg. 2/09 and Later)

-3-

Machine Data Sheet

mACHINe dATA

SHeeT

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

model T21320 12" ComBINATIoN

3-IN-1 SHeeT meTA l mACHINe

Product Dimensions:

Weight ............................................................................................................................................................................ 95 Lbs.

Width/Depth/Height ......................................................................................................................................... 24" x 23" x 15

Footprint (Width/Depth) .......................................................................................................................................... 14

Shipping Dimensions:

Type ...................................................................................................................................................................................Crate

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

Weight ........................................................................................................................................................................... 100 Lbs.

Length/Width/Height ............................................................................................................................................ 23" x 13" x 17"

Capacities:

Maximum Workpiece Width .................................................................................................................................................. 12"

Maximum Workpiece Thickness ......................................................................................................................................22 Ga.

Pan/Box Brake Minimum Reverse Bend ................................................................................................................................

Pan/Box Brake Maximum Side Height @ 90° ........................................................................................................................ 2"

Slip Roll Minimum Cylinder Diameter .................................................................................................................................. 1

Slip Roll Wire Sizes................................................................................................... ..........................................

Pan/Box Maximum Side Height .............................................................................................................................................. 2"

Construction

Brake ................................................................................................................................................... Steel w/ Hardened Edge

Frame ........................................................................................................................................................................... Cast Iron

Base ............................................................................................................................................................................. Cast Iron

Shear Table .................................................................................................................................... Precision Ground Cast Iron

Shear Blades ......................................................................................................Reversible Precision Ground Hardened Steel

Shear Hold-Down Clamp .............................................................................................................................................Cast-Iron

Other Specifications:

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

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

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

Assembly Time ......................................................................................................................................................... 30 Minutes

Features:

Shear Table Front Guide
Shear & Brake Adjustable Rear Stop
Hardened Steel Brake Fingers
Precision Ground Hardened Steel Shear Blade

1

⁄8" x 11 1⁄2"

1

⁄8", 11⁄64", 13⁄64"

3

⁄8"

3

⁄4"

1

⁄2"

-4-

data sheet

Model T21320 (Mfg. 2/09 and Later)

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.

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

Safety Instructions for Machinery

OWNER’S MANUAL. Read and understand

this owner’s manual BEFORE using machine.
Untrained users can be seriously hurt.

EYE PROTECTION. Always wear ANSI­approved 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.

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.

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 a loss of
workpiece control.

HEARING PROTECTION. Always wear hear­ing protection when operating or observiing loud
machinery. Extended exposure to this noise
without hearing protection can cause permanent
hearing loss.

MENTAL ALERTNESS. Be mentally alert when
running machinery. Never operate under the
influence of drugs or alcohol, when tired, or when
distracted.

Model T21320 (Mfg. 2/09 and Later)

-5-

Safety Instructions for Machinery

DISCONNECTING POWER SUPPLY. Always

disconnect machine from power supply before
servicing, adjusting, or changing cutting tools
(bits, blades, cutters, etc.). Make sure switch is
in OFF position before reconnecting to avoid an
unexpected or unintentional start.

INTENDED USE. Only use the machine for its
intended purpose and only use recommended
accessories. Never stand on machine, modify
it for an alternative use, or outfit it with non­approved accessories.

STABLE MACHINE. Unexpected movement
during operations greatly increases the risk of
injury and loss of control. Verify machines are
stable/secure and mobile bases (if used) are
locked before starting.

FORCING MACHINERY. Do not force machine.
It will do the job safer and better at the rate for
which it was designed.

GUARDS & COVERS. Guards and covers can
protect you from accidental contact with mov­ing parts or flying debris. Make sure they are
properly installed, undamaged, and working
correctly before using machine.

REMOVING TOOLS. Never leave adjustment
tools, chuck keys, wrenches, etc. in or on
machine—especially near moving parts. Verify
removal before starting!

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.

DANGEROUS ENVIRONMENTS. Do not use
machinery in wet locations, cluttered areas,
around flammables, or in poorly-lit areas. Keep
work area clean, dry, and well lighted to mini­mize risk of injury.

APPROVED OPERATION. Untrained operators
can be seriously hurt by machinery. Only allow
trained or properly supervised people to use
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!

CHILDREN & BYSTANDERS. Keep children
and bystanders a safe distance away from work
area. Stop using machine if children or bystand­ers become a distraction.

FEED DIRECTION. Unless otherwise noted, feed
work against the rotation of blades or cutters.
Feeding in the same direction of rotation may pull
your hand into the cut.

SECURING WORKPIECE. When required, use
clamps or vises to secure workpiece. A secured
workpiece protects hands and frees both of them
to operate the machine.

UNATTENDED OPERATION. Never leave
machine running while unattended. Turn machine
Off and ensure all moving parts completely stop
before walking away.

MAINTENANCE & INSPECTION. A machine that
is not properly maintained may operate unpre­dictably. Follow all maintenance instructions and
lubrication schedules to keep machine in good
working condition. Regularly inspect machine for
loose bolts, alignment of critical parts, binding, or
any other conditions that may affect safe opera­tion. Always repair or replace damaged or mis­adjusted parts before operating machine.

EXPERIENCING DIFFICULTIES. If at any time
you are experiencing difficulties performing the
intended operation, stop using the machine!
Contact our Technical Support Department at
[phone].

-6-

Model T21320 (Mfg. 2/09 and Later)

Additional Safety Instructions for

Combination 3-in-1 Sheet Metal Machines

1. OVERLOADING. Attempting to overload

this machine beyond the capacities speci­fied in the Data Sheet on Page 4 could
cause personal injury or property damage.
DO NOT use any sort of "cheater" bar or
pipe on the hand crank.

2. USAGE. To avoid personal injury or prop­erty damage, always use each tool of the
machine for its intended purposes and DO
NOT modify the machine in any way.

3. METAL EDGES. Sharp metal edges can
quickly cut your fingers. ALWAYS chamfer
and de-burr sharp sheet metal edges before
bending and after cutting the workpiece.

4. PINCHING. This machine represents severe
pinching and amputation hazards. ALWAYS
keep hands away from the rollers, brake
fingers, clamping bar, and shearing blades
when operating.

5. PERSONAL PROTECTION. To avoid per­sonal injury, ALWAYS wear heavy leather
gloves, ANSI approved eye protection, and
leather boots with extra toe protection when
using this machine.

6. BODY POSITION. To avoid personal injury
due to slipping or falling, ALWAYS maintain
secure footing and a comfortable body posi­tion when using this machine.

7. GOOD WORKING CONDITION. To reduce
the risk of personal injury, ALWAYS inspect
the working parts of this machine for cracks,
burrs, loose fasteners, or any other dam­age and resolve any issue before beginning
operation.

8. WORKBENCH MOUNTING. Personal injury
could occur if this machine should unexpect­edly move during operation. ALWAYS make
sure the machine is securely mounted to a
stable workbench or stand that can support
the weight and pressures of the operation.

9. ENTANGLEMENT HAZARDS. The moving
parts of this machine represent entangle­ment hazards. DO NOT wear jewelry, or
loose clothing, and tie back long hair when
using this machine.

10. SHEARING BLADES/BRAKE FINGERS.

If not properly aligned, the shearing blades
or brake fingers can cause machine parts
or the workpiece to break up and fly at the
operator. ALWAYS keep these parts proper­ly adjusted and in good working condition.

11. OPERATIONAL QUESTIONS. If, at any
time, you are experiencing difficulties per­forming the intended operation, stop using
the machine! Then contact our Tech Support
at [phone].

Like all machinery there is potential danger
when operating this machine. Accidents are
frequently caused by lack of familiarity or
failure to pay attention. Use this machine
with respect and caution to decrease the
risk of operator injury. If normal safety pre­cautions are overlooked or ignored, serious
personal injury may occur.

Model T21320 (Mfg. 2/09 and Later)

No list of safety guidelines can be complete.
Every shop environment is different. Always
consider safety first, as it applies to your
individual working conditions. Use this and
other machinery with caution and respect.
Failure to do so could result in serious per­sonal injury, damage to equipment, or poor
work results.

-7-

SECTION 2: SETUP

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!

This machine and its
components are heavy.
Get lifting help and use
safe lifting methods to lift
and move heavy items.

Description Qty

• Safety Glasses ........................................... 1

• Cleaner/Degreaser (Page 9) ...... As Needed

• Disposable Shop Rags ............... As Needed

• Additional People ....................................... 1

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

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

• Mounting Hardware (Page 10) ... As Needed

Unpacking

Your machine was carefully packaged for safe
transportation. Remove the packaging materials
from around your machine and inspect it. If you
discover the machine is damaged, please imme-

diately call Customer Service 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.

-8-

When you are completely satisfied with the condi­tion of your shipment, inventory the contents.

SUFFOCATION HAZARD!
Immediately discard all plas­tic bags and packing materi­als to eliminate choking/suf­focation hazards for children
and animals.

Model T21320 (Mfg. 2/09 and Later)

Inventory

Clean Up

The following is a description of the main compo­nents shipped with your machine. Lay the compo­nents 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 2–3) Qty

A. Sheet Metal Machine ................................. 1

B. Shear & Brake Rear Work Stop ................. 1

C. Crank Handle ............................................. 1

D. Crank Handle Lock Knobs ......................... 2

E. Hex Wrenches 5, 6mm ...................... 1 Each

A

The unpainted surfaces are coated with a waxy
oil to prevent corrosion during shipment. Remove
this protective coating with a solvent cleaner or
degreaser, such as shown in Figure 4. For thor­ough cleaning, some parts must be removed.

For optimum performance, clean all moving
parts or sliding contact surfaces. Avoid chlo-

rine-based solvents, such as acetone or brake
parts cleaner that may damage painted surfac­es. Always follow the manufacturer’s instructions
when using any type of cleaning product.

Gasoline and petroleum
products have low flash
points and can explode
or cause fire if used to
clean machinery. DO
NOT use these products
to clean the machinery.

Figure 2. Model T21320 base machine.

C

B

D

E

Figure 3. Model T21320 small item inventory.

Many cleaning solvents
are toxic if inhaled.
Minimize your risk by only
using these products in a
well ventilated area.

G2544—Solvent Cleaner & Degreaser
H9692—Orange Power Degreaser

Great products for removing shipping grease.

Figure 4. Cleaner/degreasers available from

Grizzly.

Model T21320 (Mfg. 2/09 and Later)

-9-

Site Considerations

Mounting

Floor Load

Refer to the Machine Data Sheet for the weight
and footprint specifications of your machine. Some
workbenches or stands may require additional
reinforcement to support the machine, workpiece,
and the forces applied during operation.

Placement Location

Consider existing and anticipated needs, size of
material to be processed through each machine,
and space for auxiliary stands, work tables or
other machinery when establishing a location for
your new machine. See Figure 5 for the minimum
working clearances.

21"

The base of this machine has holes that allow it
to be mounted to a workbench. For a safe and
smooth operation of this machine, it MUST be
securely mounted to an appropriate workbench
or stand.

The strongest mounting option is a "Through
Mount" where holes are drilled all the way through
the workbench, and hex bolts, washers, and hex
nuts are used to secure the drill press to the
workbench.

24"

Figure 5. Minimum working clearances.

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.

Figure 6. Example of a through mount setup.

Another option for mounting is a "Direct Mount"
where the machine is simply secured to the work­bench with a lag screw.

Lag Screw

Flat Washer

Machine Base

Workbench

Figure 7. Example of a direct mount setup.

-10 -

Model T21320 (Mfg. 2/09 and Later)

Assembly

In addition to the assembly procedures below,
some disassembly is required to remove storage
grease and relubricate the cleaned parts.

To assemble and clean your machine:

1. Remove one of the cap screws on the hand

crank hub, rotate the end cap out of the way,
then insert the hand crank in the slot (see
Figure 8).

Note: It is your preference which side of the

machine you install the hand crank.

Hand Crank

3. Thread the rods into either the upper or lower
mounting holes, as shown in Figure 9. Only
hand-tighten the rods—over-tightening will
make it difficult to remove them.

Note: Install the rods in the upper mounting

holes to use the work stop with the brake or
in the lower holes to use it with the shear.

Upper Mounting Holes

Lower

Mounting

Holes

Rods

Cap Screw

Lock Knob

End Cap

Figure 8. Hand crank installed.

2. Re-install the cap screw removed in Step 1,

then thread and tighten a lock knob into the
center hole of the end cap to secure the hand
crank in place.

Tip: When needed, extend one end of the

hand crank from the hub for greater lever­age.

Figure 9. Work stop rods mounted in the lower

holes for use with the shear.

4. Remove the hex nuts from the ends of the
rods, slide the stop bar onto the rods and
position it for your operation, then tighten the
lock knobs to secure it, as shown in Figure

10.

Note: Re-installing the hex nuts is optional.

Lock Knobs

Model T21320 (Mfg. 2/09 and Later)

Stop Bar

Figure 10. Work stop installed for use with the

shear.

-11-

cleaning fingers

5. Loosen the two hex bolts securing the finger
receiver/upper shear blade to the frame (see
Figure 11).

Hex Bolts

Finger Receiver/

Shear Blade

Figure 11. Loosening the hex bolts securing the

finger receiver.

6. Move the table back until the upper shear
blade can pass down behind the table blade
by loosening the two cap screws securing the
shear table to the frame and rotating the table
adjustment screws counterclockwise (see
Figure 57).

Note: Operational adjustment of the shear-

ing blades is covered in the Shearing Blade
Gap Adjustment procedure on Page 32.

8. Use the hand crank to position the brake
finger receiver close to the brake fingers, as
shown in Figure 13.

Gib

Cap

Screws

Fingers

Finger

Removal

Receiver

Path

Figure 13. Brake finger components.

9. Loosen the gib cap screws to release the fin-

gers, then remove the fingers from the side of
the finger receiver, as shown in Figure 13.

10. Use shop rags and a degreaser (Page 9) to
remove the storage grease from the fingers,
gib, and receiver. Thoroughly dry the parts,
then apply a thin coat of an anti-rust lubricant
to all the parts (refer to Accessories on Page
26 for options from Grizzly).

Cap Screw

Upper
Shear

Blade

Table Adjustment Screw

Figure 12. Table adjustment controls.

7. Make sure the finger receiver and upper

shear blade move up and down smoothly, re­tighten the hex bolts just until they are snug,

1

then back them off approximately

⁄4 turn.

-12-

Model T21320 (Mfg. 2/09 and Later)