Grizzly T20798 User manual
MODEL T20798
40" PAN AND BOX BRAKE
OWNER'S MANUAL
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
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Table of Contents
INTRODUCTION............................................................................................................................... 2
SECTION 1: SAFETY....................................................................................................................... 5
SECTION 2: SETUP ......................................................................................................................... 8
SECTION 3: OPERATIONS ........................................................................................................... 12
SECTION 4: ACCESSORIES......................................................................................................... 18
SECTION 5: MAINTENANCE......................................................................................................... 19
SECTION 6: PARTS....................................................................................................................... 20
WARRANTY AND RETURNS ........................................................................................................ 25
INTRODUCTION
Functional Overview
Contact Info
Manual Accuracy
your machine may not exactly match
the manual
www.grizzly.com
Figure 1.
Identification
A. Clamping Pressure Knobs
B. Clamping Leaf
C. Finger Blocks
D. Stop Dial
E. Bending Leaf
F. Setback Knobs
G. Foot Pedal
H. Foot Pedal Lock
I. Operating Handle
J. Clamping Block
MACHINE DATA sHEET
MODEL T20798
40" PAN & BOX BRAKE
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MACHINE DATA
SHEET
Overall Dimensions
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Model T20798 Page 1 of 1
Data
Sheet
4. ALWAYS USE HEARING PROTECTION
WHEN OPERATING MACHINERY.
5. WEAR PROPER APPAREL.
6. NEVER OPERATE MACHINERY WHEN
TIRED, OR UNDER THE INFLUENCE OF
DRUGS OR ALCOHOL.
1. READ THROUGH THE ENTIRE MANUAL
BEFORE STARTING MACHINERY.
2. ALWAYS USE ANSI APPROVED
SAFETY GLASSES WHEN OPERATING
MACHINERY.
3. ALWAYS WEAR AN ANSI APPROVED
RESPIRATOR WHEN OPERATING
MACHINERY THAT PRODUCES DUST.
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 which are intended to convey the level of
importance of the safety messages. The progression of symbols is described below. Remember
that safety messages by themselves do not eliminate danger and are not a substitute for proper
accident prevention measures.
Indicates a potentially hazardous situation which, if not avoided,
MAY result in minor or moderate injury. It may also be used to alert
against unsafe practices.
Indicates a potentially hazardous situation which, if not avoided,
COULD result in death or serious injury.
Indicates an imminently hazardous situation which, if not avoided,
WILL result in death or serious injury.
This symbol is used to alert the user to useful information about
proper operation of the machine.
NOTICE
Safety Instructions for Machinery
SECTION 1: SAFETY
7. ONLY ALLOW TRAINED AND PROP-
ERLY SUPERVISED PERSONNEL TO
OPERATE MACHINERY.
8. KEEP CHILDREN AND VISITORS AWAY.
9. MAKE WORKSHOP CHILD PROOF.
10. NEVER LEAVE WHEN MACHINE IS
RUNNING. OFF
11. DO NOT USE IN DANGEROUS
ENVIRONMENTS.
12. KEEP WORK AREA CLEAN AND WELL
LIT.
13. USE A GROUNDED EXTENSION CORD
RATED FOR THE MACHINE AMPERAGE.
14.
ALWAYS DISCONNECT FROM POWER
SOURCE BEFORE SERVICING
MACHINERY
15. MAINTAIN MACHINERY WITH CARE.
Safety Instructions for Machinery
16. MAKE SURE GUARDS ARE IN PLACE
AND WORK CORRECTLY BEFORE
USING MACHINERY.
17. REMOVE ADJUSTING KEYS AND
WRENCHES.
ON
18. CHECK FOR DAMAGED PARTS
BEFORE USING MACHINERY.
19. USE RECOMMENDED ACCESSORIES.
20. DO NOT FORCE MACHINERY.
21. SECURE WORKPIECE.
22. DO NOT OVERREACH.
23. MANY MACHINES WILL EJECT THE
WORKPIECETOWARDTHEOPERATOR.
24. ALWAYS LOCK MOBILE BASES
BEFORE OPERATING MACHINERY
Additional Safety Instructions for Pan and
Box Brakes
5. GLOVES AND GLASSES
6. EXPERIENCING DIFFICULTIES
7. TOOLS IN POOR CONDITION
1. OVERLOADING PAN AND BOX BRAKE.
Page 4
2. USAGE.
3. METAL EDGES
4. PINCHING.
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 per-
sonal injury, damage to equipment, or poor
work results.
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 pre-
cautions are overlooked or ignored, serious
personal injury may occur.
please immediately call
Customer Service at (570) 546-9663for advice.
Otherwise, filing a freight claim can be difficult.
Unpacking
SECTION 2: SETUP
Figure 2
Figure 2.
Wear safety glasses dur-
ing the entire setup pro-
cess!
This machine presents
serious injury hazards
to untrained users. Read
through this entire man-
ual to become familiar
with the controls and
operations before using
the machine!
Setup Safety
This machine and its com-
ponents are very heavy.
Get lifting help or use
power lifting equipment
such as a forklift to move
heavy items.
The Model T20798 is a
heavy machine. Serious
personal injury may occur
if safe moving methods
are not used. To be safe,
get assistance and use
power equipment to move
the shipping crate and
remove the machine from
the crate.
Lifting
Inventory
Clean Up
Figure 3
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.
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
Figure 3.
Using Foot Pedal Page 13
Figure 6.
Site Considerations
Children and inexperi-
enced users can be easily
injured by this equipment.
Ensure that your workplace
is inaccessible to children
and inexperienced users
by closing and locking all
entrances when you are
away.
Floor Load
Machine Data Sheet
Placement Location
Figure6
To remove and clean the fingers:
1.
Figure 4
2.
Figure 5
3.
Page 14
Figure 4.
G5562—SLIPIT®1 Qt. Gel
G5563—SLIPIT®12 oz Spray
G2871—Boeshield®T-9 12 oz Spray
G2870—Boeshield®T-9 4 oz Spray
H3789—G96®Gun Treatment 4.5 oz Spray
Figure 5.
Figure 8.
Figure7
Mounting to Floor
Bolting to Concrete Floors
Figure 7
Figure 8
SECTION 3: OPERATIONS
General Operation
Operation Safety
NOTICE
If you have never used this type of machine
or equipment before, WE STRONGLY REC-
OMMEND that you read books, trade maga-
zines, or get formal training before begin-
ning any projects. Regardless of the con-
tent in this section, Grizzly Industrial will
not be held liable for accidents caused by
lack of training.
CRUSHING AND SEVERING
HAZARD!
Keep hands and fingers away
from the clamping areas
when using this machine or
serious injury will occur!
Bodily injury could result from using this
machine. To protect yourself always wear
safety goggles, leather work boots, and
heavy duty leather work gloves when operat-
ing this machine or whenever handling sheet
metal.
Using Foot Pedal
Figure 10
To use the foot pedal:
Figure 9
Figure 9
To release the foot pedal lock:
Figure 10
Adjusting Clamping
Pressure
Figure 13
Figure 13.
To adjust the clamping pressure:
1.
2.
3.
Aligning Fingers
Tools Needed: Qty
To align a finger:
1.
2.
3.
Figure 11
Figure 11.
Figure 12.
4.
Figure12
Adjusting Setback
NOTICE
You must include the thickness of folded
edges or joints when determining the prop-
er setback, or the brake may be damaged.
Page 4
Note:When performing these adjustmentsmake
sure the bending leaf is parallel with the clamping
block, or your bend will be distorted.
Figure 14.
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Figure 15
To adjust the setback:
1.
Figure 15,
2.
3.
Step 1
4. Steps 3 4
Figure 16.
3.
Page 14
Figure 17
Bending Allowance
Spacing Fingers
Tools Needed: Qty
To space the fingers apart:
1.
2.
Figure 16
Note:For best results, match the combined
finger widths as close as possible to the width
of the box side you are bending.
Gauge Inch 1-Bend 2-Bends 3-Bends
16 0.06 0.093 0.187 0.281
18 0.48 0.075 0.150 0.225
20 0.36 0.056 0.112 0.168
22 0.30 0.046 0.092 0.138
24 0.24 0.037 0.074 0.111
26 0.18 0.028 0.056 0.084
28 0.15 0.023 0.046 0.069
30 0.12 0.018 0.036 0.054
Figure 17.
Typical 90° Bend Allowances
Basic Bending
Do not operate the Model T20798 unless
it has been securely clamped in place or
mounted to the floor, or it could tip over on
you, causing a severe injury!
Note: If a pan or box bend is desired, choose a
finger or a selection of fingers that are as close
as possible to the length of the pan or box side
lengths.
To perform a basic bending operation:
1.
2.
3.
Note: If the foot pedal does not lock when
you lower the fingers over the workpiece, the
clamping pressure may need to be loosened
(refer to Adjusting Clamping Pressure on
Page 14).
4.
5.
Setting Adjustable
Stop
Figure 18
To set the adjustable stop:
1.
2.
3.
4.
Steps 1-3
Figure 18.
SECTION 4: ACCESSORIES
H5614—Wire Gauge US Standard
Figure 21.
G8781—41⁄2" Suction Cup
G4956—Super Nibbler
Figure 22.
Figure 19.
H5958—Sheet Metal Pliers
Figure 20.
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