Grizzly T27978 Manuale utente

NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE

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

#JH18676 PRINTED IN CHINA

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

MODEL T27978

50-TON HYDRAULIC PRESS

INSTRUCTIONS

Figure 1. Model T27978.

EYE INJURY HAZARD!

Always wear safety glasses

during use to prevent

serious personal injury.

INJURY HAZARD!

When servicing, always dis-

connect tool from air to pre-

vent unexpected operation.

125 PSI

MAX AIR PRESSURE!

Exceeding this PSI may

result in injury/tool damage.

Description Qty

Additional People ................................................. 2

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

Open-End Wrenches 13, 16, 18, 19mm ...... 1 Ea.

ISO VG32 Hydraulic Oil ........................2.5 Quarts

Needed For Setup

Inventory

Description (Figure 2) Qty

A. Hydraulic Press Assembly (not shown) ...... 1

B. Base Supports ............................................ 2

C. Pump Handle .............................................. 1

D. Support Rods ............................................. 2

E. Press Blocks ............................................... 2

F. Angle Braces .............................................. 4

G. Hardware Bag (not shown)

• Hex Bolts M10-1.5 x 25 ....................... 12

• Cap Screws M8-1.25 x 30 .................... 4

• Lock Washers 8mm ............................ 12

• Flat Washers 8mm ............................. 12

• Hex Nuts M10-1.5 ............................... 12

Figure 2. Inventory items.

Open shipping crate and remove inventory items

included inside (see Figure 2).

Workpieces positioned off-center below

hydraulic ram can be ejected unexpectedly

from force being applied unevenly, striking

operator or bystanders with great force.

Always ensure workpiece is positioned

so force is evenly distributed. STOP and

release compression if workpiece shifts

during pressing.

-2- T27978 50-Ton Hydraulic Press (Mfd. 12/16)

Identification

A. Winch. Raises and lowers press bed to

adjust bed height.

B. Table Plates. Support workpiece during

bending operation.

C. Hydraulic Ram. Applies pressure directly

to workpiece. Hydraulic ram operates using

both incoming air line for rapid downward

movement and manual pump handle for

slower downward ram movement.

D. Pressure Gauge. Shows pounds of force

being applied to workpiece.

E. Hydraulic Fluid Reservoir. Holds hydraulic

fluid for operation of hydraulic ram.

F. Tank Relief Valve. Releases pressure from

hydraulic ram to release workpiece.

G. Air Cylinder Control. Valve controls amount

of air released from air line cylinder to

hydraulic ram.

H. Air Line Cylinder. Provides pressure to

lower hydraulic ram. Maximum incoming air

pressure is 125 PSI.

I. Pump Handle. Manually lowers ram into

workpiece in small increments.

J. Press Bed. Supports workpiece during

pressing operation. Bed raises and lowers

using winch.

K. Support Rods. Support press bed at prede-

termined heights of holes in machine frame.

Figure 3. Machine components.

1. With the help of two assistants, remove

press from shipping crate, hold upright, and

attach both base supports (see Figure 4)

using (4) M10-1.5 x 25 hex bolts, 10mm flat

washers, 10mm lock washers, and M10-1.5

hex nuts.

Assembly

This machine and its

components are very

heavy. Reduce risk of

strain or lifting injury

by getting lifting help or

using power lifting equip-

ment such as a forklift to

move heavy items.

2. Attach angle braces to each base support

using (8) M10-1.5 x 25 hex bolts, 10mm flat

washers, 10mm lock washers, and M10-1.5

hex nuts, as shown in Figure 4.

Figure 4. Supports and angle braces installed.

Angle

Brace

Base

Supports

T27978 50-Ton Hydraulic Press (Mfd. 12/16) -3-

3. Attach hydraulic reservoir assembly to out-

side of press frame (see Figure 5) by thread-

ing (4) M10-1.5 x 30 hex bolts, 10mm flat

washers, and 10mm lock washers through

frame mounting bracket into threaded holes

of hydraulic assembly.

4. Attach winch to outside of press frame, as

shown in Figure 6, using (2) M10-1.5 x 25

hex bolts, 10mm flat washers, and M10-1.5

hex nuts.

Anchoring to Floor

Anchoring machinery to the floor prevents tipping

or shifting and reduces vibration that may occur

during operation, resulting in a machine that runs

slightly quieter and feels more solid.

If the machine will be installed in a commercial or

workplace setting, local codes may require that it

be anchored to the floor.

If not required by any local codes, fastening the

machine to the floor is an optional step. If you

choose not to do this with your machine, we rec-

ommend placing it on machine mounts, as these

provide an easy method for leveling and they have

vibration-absorbing pads.

Lag shield anchors with lag screws (see below)

are a popular way to anchor machinery to a con-

crete floor, because the anchors sit flush with the

floor surface, making it easy to unbolt and move

the machine later, if needed. However, anytime

local codes apply, you MUST follow the anchoring

methodology specified by the code.

Machine Base

Concrete

Lag Screw

Lag Shield Anchor

Flat Washer

Drilled Hole

Figure 7. Popular method for anchoring

machinery to a concrete floor.

Anchoring to Concrete Floors

Number of Mounting Holes ............................ 4

Diameter of Mounting Hardware................. 3⁄8"

Figure 5. Mounting hydraulic assembly.

Hydraulic

Assembly

x 4

Frame

Mounting

Bracket

Figure 6. Mounting winch to press frame.

Winch

x 2

-4- T27978 50-Ton Hydraulic Press (Mfd. 12/16)

Operating Press

1. Rotate tank relief valve (see Figure 8) fully

clockwise to close it. Ensure top relief valve

is open 1–2 turns.

2. Engage latch on winch (see Figure 9), and

raise press bed to desired height, insert

support rods (see Figure 10) into holes in

machine frame closest to bed, then lower bed

onto support rods.

Figure 8. Hydraulic system relief valve locations.

Tank

Relief

Valve

Top

Relief

Valve

Figure 10. Support rod placement.

Support Rod

(1 of 2)

3. Connect air valve to incoming air compressor

line. Confirm incoming air pressure is 110–

125 PSI.

ALWAYS ensure winch latch is engaged

when raising/lowering press bed! Engaging

latch prevents bed from accidentally

dropping if winch handle is released, which

may result in crushing injury.

4. Place table plates on press bed (see Figure

12), and place workpiece on table plates.

Figure 12. Table plates positioned on press bed

beneath ram.

Table

Plates

Press

Bed

Figure 11. Air valve movement.

Incoming

Air Line

Air

Valve

Ram

Figure 9. Winch latch positions.

Disengaged

Engaged

Latch

T27978 50-Ton Hydraulic Press (Mfd. 12/16) -5-

Figure 15. Rotating tank relief valve.

Tank

Relief

Valve

7. Rotate tank relief valve (see Figure 15) coun-

terclockwise to release pressure on ram, then

remove workpiece.

Maintenance

The T27978 50-Ton Press features a fully-sealed

hydraulic unit and air cylinder. Periodically check

press for loose mounting bolts or any unsafe con-

ditions. Thoroughly clean press components on

an as-needed basis for best operation.

1. Wipe all dirt and dust off press components.

2. Apply light oil to surface of ram.

3. Check hydraulic ram and press bed sup-

port rods for cracks or damage. Replace if

necessary.

To clean/maintain press:

6. For precise application of ram force on work-

piece, pump handle to increase pressure

incrementally. Refer to pressure gauge for

actual workpiece pressure (see Figure 14).

Figure 14. Pump handle and pressure gauge.

Pressure Gauge

Figure 13. Air valve components/controls.

Air

Valve

Tab

Air

Line

Air

Valve

Workpieces positioned off-center below

hydraulic ram can be ejected unexpectedly

from force being applied unevenly, striking

operator or bystanders with great force.

Always ensure workpiece is positioned

so force is evenly distributed. STOP and

release compression if workpiece shifts

during pressing.

5. Lower ram by pressing and holding air valve

tab (see Figure 13). Ram should lower

smoothly.

-6- T27978 50-Ton Hydraulic Press (Mfd. 12/16)

15 16

37 36

63 64 65

T27978 Parts Breakdown

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.

BUY PARTS ONLINE!

Scan QR code with your

digital device or visit

www.grizzly.com/parts

to purchase replacement

parts or check pricing and

availability.

PARTS STORE

T27978 50-Ton Hydraulic Press (Mfd. 12/16) -7-

REF PART # DESCRIPTION REF PART # DESCRIPTION

1 PT27978001 HEX BOLT M22-2.5 X 50 35 PT27978035 CABLE BLOCK

2 PT27978002 CROSS BEAM 36 PT27978036 HEX NUT M10-1.5

3 PT27978003 HEX NUT M14-2 37 PT27978037 LOCK WASHER 10MM

4 PT27978004 LOCK WASHER 14MM 38 PT27978038 FLAT WASHER 10MM

5 PT27978005 FLAT WASHER 22MM 39 PT27978039 CABLE PULLEY (LOWER)

6 PT27978006 HEX NUT M22-2.5 40 PT27978040 EXT RETAINING RING 20MM

7 PT27978007 COLUMN 41 PT27978041 HEX NUT M14-2

8 PT27978008 PRESS BED SUPPORT ROD 42 PT27978042 KNURLED KNOB M10-1.5 X 38L X 40D

9 PT27978009 ANGLE SUPPORT BAR 43 PT27978043 AIR HOSE 1/4" ID 300-PSI 48"L

10 PT27978010 FLAT WASHER 12MM 44 PT27978044 PNEUMATIC HAND VALVE 1/4" NPT

11 PT27978011 HEX BOLT M10-1.5 X 25 45 PT27978045 EXTENSION SPRING 1-3/4" X 11" X 1/4"

12 PT27978012 BASE SUPPORT 46 PT27978046 EXTENSION SPRING PLATE

13 PT27978013 HEX NUT M12-1.75 47 PT27978047 OVERFLOW HOSE 5/16" OD X 27"L

14 PT27978014 CROSS SUPPORT 48 PT27978048 HYDRAULIC LINE 1/4" ID 300-PSI 30"L

15 PT27978015 HEX BOLT M8-1.25 X 25 49 PT27978049 HYDRAULIC LINE 1/4" ID 300-PSI 40"L

16 PT27978016 FLAT WASHER 8MM 50 PT27978050 HEX BOLT M8-1.25 X 15

17 PT27978017 HEX BOLT M12-1.75 X 35 51 PT27978051 LOCK WASHER 8MM

18 PT27978018 HYDRAULIC RESERVOIR 52 PT27978052 HEX NUT M8-1.25

19 PT27978019 HANDLE 13/16"D X 26-3/8"L 53 PT27978053 AIR CYCLINDER

20 PT27978020 PRESS BED 54 PT27978054 PRESSURE GAUGE RING

21 PT27978021 PRESS BLOCKS 55 PT27978055 PHLP HD SCR M6-1 X 8

22 PT27978022 PRESSURE GAUGE 56 PT27978056 AIR LINE LOCK FITTING M10-1.5

23 PT27978023 HYDRAULIC RAM 57 PT27978057 90-DEG ELBOW FITTING 3/8" BRASS

24 PT27978024 HEX BOLT M14-2 X 65 58 PT27978058 STRAIGHT FITTING 3/8" BRASS

25 PT27978025 FLAT WASHER 14MM 59 PT27978059 90-DEGREE BLOCK FITTING 1/2"

26 PT27978026 WINCH 1000LB. 60 PT27978060 LOWER PULLEY SHAFT M12-1.75 X 25 SE

27 PT27978027 WINCH BRACKET 61 PT27978061 LOCK WASHER 12MM

29 PT27978029 HEX BOLT M10-1.5 X 35 62 PT27978062 GRIZZLY.COM LABEL

30 PT27978030 STEEL WINCH CABLE 5MM 63 PT27978063 MACHINE ID LABEL

32 PT27978032 PULLEY SHAFT M14-1.75, 20 X 210 DE 64 PT27978064 READ MANUAL LABEL

33 PT27978033 CABLE PULLEY (UPPER) 65 PT27978065 SAFETY GLASSES LABEL

34 PT27978034 FLAT WASHER 14MM 66 PT27978066 AIR DISCONNECT WARNING LABEL

Main Parts List

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