Grizzly T28930 Manual de usuario

For questions or help with this product contact Tech Support at (570) 546-9663 or techsupport@grizzly.com

MODEL T28930

24" HYDRAULIC

BENDING BRAKE

INSTRUCTIONS

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

Specifications

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

Max Width Capacity ....................................... 24"

Max Thickness (Half Width Mild Steel)..14 Gauge

Max Thickness (Full Width Mild Steel) . . 16 Gauge

Max Thickness (Aluminum) ..................12 Gauge

Max Thickness (Stainless Steel) ..........18 Gauge

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

Min Reverse Bend ............................................ 1"

Max Beam Lift .................................................. 1"

Max Operating Pressure ........................ 20 Tons

Figure 1. Model T28930.

Introduction

The T28930 24" Hydraulic Bending Brake offers

simple one-handed operation for accurate bend-

ing. A hydraulic ram and bending bar bend sheet

metal from 0˚-90˚.

Description Qty

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

Safety Glasses ............................................. 1 Ea.

Open-End or Socket Wrench 17mm ................... 2

Hydraulic Oil (ISO 32 or 46) ................As Needed

Cloth Rags ...........................................As Needed

Needed For Setup

To reduce your risk of

serious injury, read this

entire manual BEFORE

using machine.

Eye injury hazard! Always

wear safety glasses when

using this machine.

Crushing hazard! Always

keep hands clear when

using this machine.

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.

-2- Model T28930 (Mfd. Since 12/18)

The following is a list of items shipped with your

machine. Before beginning setup, lay these items

out and inventory them.

Inventory

Description (Figure 2) Qty

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

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

C. Brackets ...................................................... 4

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

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

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

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

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

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

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

Figure 2. Loose parts inventory.

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).

Assembly

Figure 3. Bracket attached to base.

x 2

Base

Bracket

(1 of 4)

2. Insert brake handle (see Figure 4) into

receiver on hydraulic ram.

Figure 4. Brake handle installed in receiver on

hydraulic ram.

Brake Handle

Receiver

Mounting 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).

x 4

Figure 7. Base mounted with feet.

Tools Needed Qty

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

To mount with rubber feet:

Model T28930 (Mfd. Since 12/18) -3-

Figure 6. Base mounted to workbench.

x 4

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).

3. Pump brake handle up and down until desired

angle has been achieved.

Crushing hazard! Always

keep hands clear when

using this machine.

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).

Figure 10. Location of hydraulic release valve.

Release Valve

Figure 9. Workpiece aligned with upper die.

Workpiece Upper Die

Lower Die

Mounting to Workbench

To mount to workbench:

1. Place machine on workbench in desired loca-

tion, then make drilling marks through holes

in the mounting brackets (see Figure 5).

Figure 5. Drilling hole location.

Mark Drilling Hole

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).

Tools Needed Qty

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

Drill Bit 7⁄16" ........................................................ 1

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

Operating Hydraulic Brake

-4- Model T28930 (Mfd. Since 12/18)

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 function-

ing properly. This can be corrected by bleeding

the hydraulic oil.

3. Check hydraulic oil level by inserting hex

wrench.

To bleed hydraulic oil:

1. Remove oil plug (see Figure 12).

2. Pump brake handle until lower die reaches

highest position.

3. Loosen hydraulic release valve and wait for

lower die to fully lower (see Figure 11).

4. Repeat Steps 2–3 at least three times to

force hydraulic oil through system.

5. Check hydraulic oil level.

— If oil level is visible in fill reservoir, there

is no need to add oil. Install plug and pro-

ceed to Step 7.

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

ceed to Step 6.

6. Add oil to fill reservoir until level reaches bot-

tom of plug hole then re-install oil plug.

7. Tighten hydraulic release valve and pump

brake handle 3–5 times to test that hydraulics

function properly.

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 nor-

mal operation.

4. Add hydraulic oil to fill reservoir until level

reaches the plug hole then re-install oil plug.

To check and add hydraulic oil:

1. Loosen hydraulic release valve and wait for

lower die to fully lower (see Figure 11).

Figure 11. Location of hydraulic release valve.

Release Valve

2. Remove oil plug (see Figure 12).

Figure 12. Location of oil plug.

Oil Plug

— 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.

Model T28930 (Mfd. Since 12/18) -5-

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 (800) 523-4777 or visit our online parts store at www.grizzly.com to check for availability.

912

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)

T28930 Parts Breakdown

-6- Model T28930 (Mfd. Since 12/18)

BUY PARTS ONLINE AT GRIZZLY.COM!

Scan QR code to visit our Parts Store.

PINCH HAZARD!

Keep hands away

from clamp area

when clamping or

bending.

To reduce risk of death

or serious injury, read

manual BEFORE using

machine.

To get a new manual,

call (800) 523-4777 or

go to www.grizzly.com.

WARNING!

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.

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.

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.

Specifications

Mfd. for Grizzly in China

Date

S/N

MODEL T28930

24" HYDRAULIC

BENDING BRAKE

101

103

104

105

106

107

102

T28930

Labels & Cosmetics

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 (800) 523-4777 or www.grizzly.com.

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 par-

ticular 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.

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

warranty-card

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

registration page

. Enter all applicable information for the product.

WARRANTY

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