Grizzly T28930 User guide

MODEL T28930

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

Eye injury hazard! Always
wear safety glasses when

Crushing hazard! Always
keep hands clear when

24" HYDRAULIC

BENDING BRAKE

INSTRUCTIONS

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

Introduction

The T28930 24" Hydraulic Bending Brake offers
simple one-handed operation for accurate bend­ing. A hydraulic ram and bending bar bend sheet
metal from 0˚-90˚.

using machine.

Figure 1. Model T28930.

using this machine.

using this machine.

This machine and its com­ponents are very heavy.
Get lifting help or use
power lifting equipment
such as a forklift to move
heavy items.

Specifications

Product Weight ........................................125 lbs.

Max Width Capacity
Max Thickness (Half Width Mild Steel)..14 Gauge
Max Thickness (Full Width Mild Steel)
Max Thickness (Aluminum)
Max Thickness (Stainless Steel)

Brake Range..............................................0˚–90˚

Min Reverse Bend
Max Beam Lift
Max Operating Pressure

....................................... 24"

. . 16 Gauge

..................12 Gauge

..........18 Gauge

............................................ 1"

.................................................. 1"

........................ 20 To ns

Needed For Setup

Description Qty

Additional Person for Lifting .................................1

Safety Glasses
Open-End or Socket Wrench 17mm
Hydraulic Oil (ISO 32 or 46)
Cloth Rags

............................................. 1 Ea.

................... 2

................As Needed

...........................................As Needed

COPYRIGHT © MAY, 2020 BY GRIZZLY INDUSTRIAL, INC.

NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE

OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.

(FOR MODELS MFD. SINCE 12/18) #CS20186 PRINTED IN CHINA

V1.05.20

Inventory

The following is a list of items shipped with your
machine. Before beginning setup, lay these items
out and inventory them.

2. Insert brake handle (see Figure 4) into
receiver on hydraulic ram.

Description (Figure 2) Qty

A. Hydraulic Brake Assembly (Not Shown)..... 1

. Brake Handle .............................................. 1

B

. Brackets ...................................................... 4

C

. Flat Washers 10mm (Brackets) .................. 8

D

. Cap Screws M10-1.5 x 20 (Brackets) ......... 8

E

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

F

. Rubber Feet M10-1.5 x 55 .......................... 4

G

. Flat Washers 10mm (Mounting) ................. 4

H

. Hex Nuts M10-1.5 (Mounting) ..................... 8

I

. Hex Bolts M10-1.5 x 30 (Mounting) ............ 4

J

B

G

H

I

C

D

E

F

J

Receiver

Brake Handle

Figure 4. Brake handle installed in receiver on

hydraulic ram.

Mounting with Rubber Feet

Tools Needed Qty

Wrench or Socket 17mm ................................... 2

To mount with rubber feet:

1. Attach a rubber foot to each base corner with

(1) 10mm flat washer and (2) M10-1.5 hex
nuts (see Figure 7).

Figure 2. Loose parts inventory.

Assembly

1. Attach brackets to brake assembly base at

each corner with (2) M10-1.5 x 20 cap screws
and (2) 10mm flat washers (see Figure 3).

Base

x 2

Bracket

(1 of 4)

Figure 3. Bracket attached to base.

x 4

Figure 7. Base mounted with feet.

-2-

Model T28930 (Mfd. Since 12/18)

Crushing hazard! Always
keep hands clear when

Mounting to Workbench

Tools Needed Qty

Drill ................................................................... 1

Drill Bit
Wrench or Socket 17mm

To mount to workbench:

1.

7

⁄16" ........................................................ 1

................................... 2

Place machine on workbench in desired loca-

tion, then make drilling marks through holes
in the mounting brackets (see Figure 5).

Mark Drilling Hole

Figure 5. Drilling hole location.

Operating Hydraulic Brake

1.

Mark workpiece for bend.

2. Insert workpiece between upper and lower
dies, with mark aligned to front edge of upper
die (see Figure 9).

Workpiece

Figure 9. Workpiece aligned with upper die.

Upper Die

Lower Die

2. Set machine aside and drill holes for mounting.

3. Attach each base corner to workbench using

an M10-1.5 x 30 hex bolt, 10mm flat washer,
and M10-1.5 hex nut (see Figure 6).

x 4

Figure 6. Base mounted to workbench.

using this machine.

3.

Pump brake handle up and down until desired

angle has been achieved.

4. Release hydraulic pressure by loosening
release valve. Wait for lower die to fully lower
before tightening release valve and removing
workpiece (see Figure 10).

Release Valve

Figure 10. Location of hydraulic release valve.

Model T28930 (Mfd. Since 12/18)

-3-

Checking & Bleeding Hydraulic Oil

Hydraulic oil may need to be added periodically
to the ram after prolonged use or if it leaks. We
recommend ISO 32 or 46 grade hydraulic oil.

Sometimes air can get trapped in the hydraulic
chamber while adding oil, keeping it from function­ing properly. This can be corrected by bleeding
the hydraulic oil.

To check and add hydraulic oil:

1.

Loosen hydraulic release valve and wait for

lower die to fully lower (see Figure 11).

Release Valve

— If oil level is visible in fill reservoir, do

not add oil. Replace plug and proceed to
Step 5.

If oil level is not visible in fill reservoir, pro-

—

ceed to Step 4.

Add hydraulic oil to fill reservoir until level

4.

reaches the plug hole then re-install oil plug.

5.

Tighten hydraulic release valve and pump

brake handle 3–5 times to test that hydraulics
function properly.

If hydraulics do not raise ram, bleed

—

hydraulic system before returning to nor­mal operation.

To bleed hydraulic oil:

Remove oil plug (see Figure 12).

1.

2.

Pump brake handle until lower die reaches

highest position.

Figure 11. Location of hydraulic release valve.

2. Remove oil plug (see Figure 12).

Oil Plug

Figure 12. Location of oil plug.

Check hydraulic oil level by inserting hex

3.

wrench.

Loosen hydraulic release valve and wait for

3.
lower die to fully lower (see Figure 11).

4.

Repeat Steps 2–3 at least three times to

force hydraulic oil through system.

Check hydraulic oil level.

5.

— If oil level is visible in fill reservoir, there

is no need to add oil. Install plug and pro­ceed to Step 7.

If oil level is not visible in fill reservoir, pro-

—

ceed to Step 6.

Add oil to fill reservoir until level reaches bot-

6.

tom of plug hole then re-install oil plug.

Tighten hydraulic release valve and pump

7.

brake handle 3–5 times to test that hydraulics
function properly.

-4-

Model T28930 (Mfd. Since 12/18)

Please Note: We do our best to stock replacement parts whenever possible, but we cannot guarantee that all parts shown here
are available for purchase. Call [phone] or visit our online parts store at www.grizzly.com to check for availability.

T28930 Parts Breakdown

25

24

19

11

5

6

14

4

2

15

8

9

13

26

18

17

12

10

16

9

6

3

16

9

7

12

10

23

10

21

17

20

23

1

10

12

22

REF PART # DESCRIPTION REF PART # DESCRIPTION

1 PT28930001 BASE 14 PT28930014 HEX BOLT M6-1 X 30
2 PT28930002 COLUMN 15 PT28930015 CAP SCREW M8-1.25 X 20
3 PT28930003 UPPER DIE 16 PT28930016 HEX NUT M6-1
4 PT28930004 LOWER DIE 17 PT28930017 EYE BOLT 1/2", M8-1.25 X 16
5 PT28930005 TOP PLATE 18 PT28930018 HYDRAULIC RAM ASSEMBLY
6 PT28930006 UPPER DIE BRACKET 19 PT28930019 HANDLE
7 PT28930007 LOWER DIE MOUNTING BLOCK 20 PT28930020 BRACKET
8 PT28930008 EXTENSION SPRING 1/8 X 1 X 7-1/2 21 PT28930021 HEX BOLT M10-1.5 X 30
9 PT28930009 FLAT WASHER 6MM 22 PT28930022 RUBBER FOOT M10-1.5 X 55
10 PT28930010 FLAT WASHER 10MM 23 PT28930023 HEX NUT M10-1.5
11 PT28930011 CAP SCREW M6-1 X 16 24 PT28930024 HANDLE GRIP
12 PT28930012 CAP SCREW M10-1.5 X 20 25 PT28930025 HEX WRENCH 8MM
13 PT28930013 CAP SCREW M6-1 X 40 26 PT28930026 FILL PLUG (RUBBER)

Model T28930 (Mfd. Since 12/18)

-5-

107

T28930

WARNING!

To reduce risk of death
or serious injury, read
manual BEFORE using
machine.
To get a new manual,
call [phone] or
go to www.grizzly.com.

106

PINCH HAZARD!

Keep hands away
from clamp area
when clamping or
bending.

105

Labels & Cosmetics

101

102

103

MODEL T28930

24" HYDRAULIC

BENDING BRAKE

Specifications

Maximum Width: 24"
Max. Thickness Half-Width (Mild Steel): 14 Ga.
Max. Thickness Full-Width (Mild Steel): 16 Ga.
Aluminum: 12 Ga.
Stainless Steel: 18 Ga.
Brake Range: 0 – 90 Deg.
Weight: 125 lbs.

Date

Mfd. for Grizzly in China

S/N

To reduce risk of serious personal injury when using this machine:

1. Read and understand manual before using this machine.

2. Always wear approved eye protection and leather gloves.

3. Secure brake to workbench before using.

4. Chamfer and deburr sharp metal edges before bending.

5. DO NOT exceed rated capacity.

6. DO NOT use breaker bar to gain leverage.

104

7. DO NOT bend wire or nails.

8. Always keep hands and fingers away from
clamping/bending blocks before raising bending leaf.

9. DO NOT operate under influence of drugs or alcohol, or
when tired.

10. Prevent unauthorized use by children or untrained users.

REF PART # DESCRIPTION REF PART # DESCRIPTION

101 PT28930101 MODEL NUMBER LABEL 105 PT28930105 EYE INJURY WARNING LABEL
102 PT28930102 TOUCH-UP PAINT, GRIZZLY GREEN 106 PT28930106 PINCH HAZARD LABEL
103 PT28930103 MACHINE ID LABEL 107 PT28930107 READ MANUAL LABEL
104 PT28930104 MACHINE WARNING LABEL

Safety labels help reduce the risk of serious injury caused by machine hazards. If any label comes
off or becomes unreadable, the owner of this machine MUST replace it in the original location
before resuming operations. For replacements, contact [phone] or www.grizzly.com.

-6-

BUY PARTS ONLINE AT GRIZZLY.COM!

Scan QR code to visit our Parts Store.

Model T28930 (Mfd. Since 12/18)

WARRANTY & RETURNS

Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser from
the date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse,
negligence, accidents, repairs or alterations or lack of maintenance. This is Grizzly’s sole written warranty
and any and all warranties that may be implied by law, including any merchantability or fitness, for any par­ticular purpose, are hereby limited to the duration of this written warranty. We do not warrant or represent
that the merchandise complies with the provisions of any law or acts unless the manufacturer so warrants.
In no event shall Grizzly’s liability under this warranty exceed the purchase price paid for the product and
any legal actions brought against Grizzly shall be tried in the State of Washington, County of Whatcom.

We shall in no event be liable for death, injuries to persons or property or for incidental, contingent, special,
or consequential damages arising from the use of our products.

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.

In the event you need to use 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.

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.

To

warranty-card

registration page

take advantage of this warranty, you must register it at https://www.grizzly.com/secureforms/

, or you can scan the QR code below to be automatically directed to our warranty

. Enter all applicable information for the product.

WARRANTY