MODEL H6231Z 10-TON
BENCHTOP SHOP PRESS
OWNER'S MaNuaL
Copyright © FEBrUAry, 2010 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.
For modEls mAnUFACtUrEd sinCE 1/10 #Cr12507 printEd in ChinA
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Table of Contents
iNTRODuCTiON............................................................................................................................... 2
manual Accuracy........................................................................................................................ 2
machine data sheet................................................................................................................... 2
Contact info................................................................................................................................ 2
identification ............................................................................................................................... 3
SECTiON 1: SafETy....................................................................................................................... 4
safety instructions for machinery............................................................................................... 4
Additional safety for hydraulic presses..................................................................................... 6
SECTiON 2: SETuP......................................................................................................................... 8
needed for setup....................................................................................................................... 8
Unpacking .................................................................................................................................. 8
inventory..................................................................................................................................... 9
site Considerations .................................................................................................................. 10
mounting................................................................................................................................... 11
Assembly.................................................................................................................................. 11
SECTiON 3: OPERaTiONS ........................................................................................................... 15
operation overview.................................................................................................................. 15
Controls.................................................................................................................................... 16
Workpiece inspection............................................................................................................... 16
SECTiON 4: aCCESSORiES......................................................................................................... 17
SECTiON 5: MaiNTENaNCE......................................................................................................... 18
schedule .................................................................................................................................. 18
Cleaning ................................................................................................................................... 18
Unpainted Cast iron ................................................................................................................. 18
lubrication................................................................................................................................ 18
SECTiON 6: SERviCE ................................................................................................................... 19
troubleshooting........................................................................................................................ 19
Changing Jack oil.................................................................................................................... 20
Jack Bleeding........................................................................................................................... 20
SECTiON 7: PaRTS....................................................................................................................... 21
main Breakdown....................................................................................................................... 21
label placement....................................................................................................................... 22
WaRRaNTy aND RETuRNS........................................................................................................ 25
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iNTRODuCTiON
Manual accuracy
Contact info
We are proud to offer this document with your
new machine! We've made every effort to be
exact with the instructions, specifications, draw-
ings, and photographs of the machine we used
when writing this manual. However, sometimes
we still make an occasional mistake.
We stand behind our machines. If you have any
service questions, parts requests or general ques-
tions about the machine, please call or write us at
the location listed below.
Grizzly Industrial, Inc.
1203 Lycoming Mall Circle
Muncy, PA 17756
Also, owing to our policy of continuous improve-
ment, 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, immediately call our techni-
cal support for updates or clarification.
Phone: (570) 546-9663
E-Mail: [email protected]
We want your feedback on this manual. If you can
take the time, please email or write to us at the
address below and tell us how we did:
For your convenience, we post all available docu-
Any updates to this document will be reflected on
our website as soon as complete.
Grizzly Industrial, Inc.
Technical Documentation Manager
P.O. Box 2069
C
/
O
Bellingham, WA 98227-2069
Email: [email protected]
Machine Data
Sheet
Customer service #: (570) 546-9663 • to order Call: (800) 523-4777 • Fax #: (800) 438-5901
MoDel h6231Z 10-ton Shop preSS
ram maximum Applied Force ....................................................................................................................20,000 lbs (10 tons)
ram maximum stroke ........................................................................................................................................................ 55⁄16"
pressure gauge Convention..............................................................................................................metric tons and Us tons
ram diameter......................................................................................................................................................................... 2"
Working distance at lowest table position ...................................................................................................................... 163⁄4
Working distance at highest table position ....................................................................................................................... 93⁄4
Bed support Bar diameter......................................................................................................................................................5⁄8
"
"
"
number of Bed Adjustment holes ..................................................................................................................................3 holes
Bed Adjustment hole spacing.......................................................................................................................... 39⁄16" on-Center
overall dimensions.............................................................................................................................. 231⁄2"W x 193⁄4"d x 45"h
Arbor plate set included.......................................................................................................................................................yes
hydraulic Fluid type ......................................................................................................................standard hydraulic Jack oil
shipping Weight...............................................................................................................................................................96 lbs.
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identification
hydraulic piston
Assembly
hydraulic pressure
gauge
large hydraulic
oil reservoir
removable press pin
Arbor plate set
hydraulic pump
Assembly
Bed support pin
high pressure
hydraulic hose
Variable height
Bed pin holes
figure 1. identification.
To reduce the risk of
serious injury when using
this machine, read and
understand this entire
manual before beginning
any operations.
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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
proper operation of the machine.
NOTICE
Safety instructions for Machinery
1. READ ENTIRE MANUAL BEFORE
STARTING. Operating machine before
reading the manual greatly increases the
risk of injury.
4. ALWAYS USE HEARING PROTECTION
WHEN OPERATING MACHINERY.
Machinery noise can cause permanent
hearing loss.
5. WEAR PROPER APPAREL. DO NOT
wear loose clothing, gloves, neckties, rings,
or jewelry that can catch in moving parts.
Wear protective hair covering to contain
long hair and wear non-slip footwear.
2. ALWAYS USE ANSI APPROVED
SAFETY GLASSES WHEN OPERATING
MACHINERY. Everyday eyeglasses only
have impact resistant lenses—they are
NOT safety glasses.
6. NEVER OPERATE MACHINERY WHEN
TIRED OR UNDER THE INFLUENCE OF
DRUGS OR ALCOHOL. Be mentally alert
at all times when running machinery.
3. ALWAYS WEAR A NIOSH APPROVED
RESPIRATOR WHEN OPERATING
MACHINERY THAT PRODUCES DUST.
Most types of dust (wood, metal, etc.) can
cause severe respiratory illnesses.
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-
safety instructions for machinery
7. Only allOw trained and prOp-
16. remOve chucK Keys Or adJustinG
tOOls.- Make- a- habit- of- never- leaving-
chuck-keys-or-other-adjustment-tools-in/on-
the-machine—especially-near-spindles!
erly supervised persOnnel tO
Operate machinery.- Make- sure-
operation-instructions-are-safe-and-clearly-
understood.
17. damaGed machinery.-Check-for-bind-
ing- or- misaligned- parts,- broken- parts,-
loose- bolts,- other- conditions- that- may-
impair-machine-operation.-Always-repair-or-
replace-damaged-parts-before-operation.
8. Keep children/visitOrs away.
Keep- all- children- and- visitors- away- from-
machinery.- When- machine- is- not- in- use,-
disconnect- it- from- power,- lock- it- out,- or-
disable- the- switch- to- make- it- difficult- for-
unauthorized-people-to-start-the-machine.
18. dO nOt FOrce machinery.- Work- at-
the-speed-for-which-the-machine-or-acces-
sory-was-designed.
9. unattended OperatiOn. Leaving-
machine- unattended- while- its- running-
greatly-increases-the-risk-of-an-accident-or-
property-damage.-Turn-machine-off-and-
allow-all-moving-parts-to-come-to-a-com-
plete-stop-before-walking-away.
19. secure wOrKpiece.- Use- clamps- or-
a-vise-to-hold-the-workpiece-when-practi-
cal.- A- secured- workpiece- protects- your-
hands-and-frees-both-hands-to-operate-the-
machine.
10. dO nOt use in danGerOus
envirOnments. DO- NOT- use- machin-
ery-in-damp,-wet-locations,-or-where-any-
flammable-or-noxious-fumes-may-exist.-
20. dO nOt Overreach.-Maintain-stability-
and- balance- at- all- times- when- operating-
machine.
21. many
machines
can
eJect
11. Keep wOrK area clean and well
liGhted. Clutter-and-dark-shadows-may-
cause-accidents.
wOrKpieces tOward OperatOr.
Know-and-avoid-conditions-that-cause-the-
workpiece-to-"kickback."
12. use a GrOunded pOwer supply
ratedFOrthemachineamperaGe.
Grounded-cords-minimize-shock-hazards.-
Operating-machine-on-an-incorrect-size-of-
circuit-increases-risk-of-fire.
22. staBle machine. Machines-that-move-
during- operations- greatly- increase- the-
risk- of- injury- and- loss- of- control.- Verify-
machines- are- stable/secure- and- mobile-
bases-(if-used)-are-locked-before-starting.
13. always discOnnect FrOm pOwer
23. certain dust may Be hazardOus-
to- the- respiratory- systems- of- people- and-
animals,-especially-fine-dust.-Be-aware-of-
the- type- of- dust- you- are- exposed- to- and-
always-wear-a-respirator-designed-to-filter-
that-type-of-dust.
sOurce
BeFOre
servicinG
machinery.-Make-sure-switch-is-in-OFF
-
position-before-reconnecting.
14. maintain machinery with care.-
Keep-blades-sharp-and-clean-for-best-and-
safest-performance.-Follow-instructions-for-
lubricating-and-changing-accessories.
24. eXperiencinG diFFiculties. If- at-
any- time- you- are- experiencing- difficulties-
performing- the- intended- operation,- stop-
using-the-machine!-Contact-our-Technical-
Support-Department-at-(570)-546-9663.
15. maKe sure Guards are in place
and wOrK cOrrectly BeFOre
usinG machinery.
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additional Safety for Hydraulic Presses
1. avOiDiNg OvERLOaD. Exceeding rated
6. uNSafE WORKPiECE. Applying pressure
to unstable objects can cause the object to
eject, causing an impact injury. never apply
pressure to balls, round objects, springs, or
elastic items.
press capacity can damage the press,
shatter a workpiece, or launch a press pin
causing a severe impact injury. When the
press has reached its maximum pressure
or the pump lever becomes stiff to oper-
ate, the press has reached its limit. never
use a cheater pipe for extra leverage.
7. avOiDiNg PROJECTiLE iNJuRiES.
Being hit by a launched workpiece or press
tooling can cause severe impact injury or
death. When using the press, stand out
of the way of any possible projectile path.
never press with rods or pins that are long
enough to shift off-center and kick out
under a load. never stack rods and spacers
to create an extended press pin. if pressing
must occur with an extended press pin, the
pin must be fastened with a safety chain or
the press pin must be enclosed in a safety
cage to eliminate a projectile hazard.
2. OPERaTiON SafETy. Applying pressure
to parts with this press can cause them to
spring out and strike you or bystanders
with deadly force. Verify that bystanders
are a safe distance away from the press
during operations. make sure that you are
wearing gloves and safety glasses with
a face shield. heavy leather boots with
extra toe protection are also required.
Under some conditions, a hard hat may
be needed.
8. CORRECT TOOLiNg. Without using the
correct spring caging tool or jig to hold the
spring-loaded workpiece, the workpiece
may shift suddenly, launching springs that
could cause a severe impact injury. never
use this press to unload spring-loaded
assemblies without also using the correct
spring caging tool or jig.
3. CORRECT iNSTaLLaTiON. An unse-
cured press on wheels can tip when being
moved or exhibit severe spring-back dur-
ing heavy pressing operations, which
could cause a crushing or impact injury.
do not place the press on a mobile base
or install casters. the press base must be
bolted to the workbench.
9. CORRECTiNg MiSaLigNED LOaDS. if
a workpiece becomes misaligned during
pressing operations, it may slip out of the
press and cause severe impact injury.
never attempt to realign a workpiece while
it is under pressure. relieve hydraulic
pressure, and start pressing operations
over if a workpiece or press pin has moved
or become misaligned. relieve hydraulic
pressure if you suspect the workpiece is in
a bind, or structural failure is imminent.
4. PRE-uSE iNSPECTiONS. A loose press
frame can cock under a load and cause
the workpiece to shift or eject, resulting in
an impact injury. Before use, inspect the
press for loose or missing bolts and pins.
Verify that no cracks exist and that the
hydraulic system is in full working order.
5. WORKPiECE SuPPORT. When a part
is pressed free, a workpiece may shift
suddenly or fall from the press, causing a
crushing injury to your foot or leg. Use a
catch basket and support long or awkward
workpieces with stands or chains, or have
an assistant support the end of a long
workpiece during pressing operations.
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10. SafE WORKiNg ZONE. Falling tooling,
arbor plates, or a shifting workpiece can
cause a crushing injury to your leg or foot.
Keep out from under the bed, do not work
under the press when it is loaded, and
never leave the press loaded and unat-
tended.
14. avOiDiNg SPRiNg-BaCK HaZaRDS.
Under heavy pressing operations, when
some parts finally break free of the host
workpiece, sudden hydraulic press unload-
ing can result in spring-back. As a result,
a workpiece, press pin, or arbor plate can
spring up and fall from the bed, causing a
crushing injury to your foot or leg. Before
press operations begin, anticipate what the
workpiece may do if this sudden unloading
occurs, and secure the workpiece so it will
not fall.
11. avOiDiNg
iNCORRECT
PRESS
OPERaTiONS. some workpieces cannot
withstand the force of pressing and can
explode, causing an impact injury. other
workpieces have hidden retaining rings,
shoulders, pins, welds, or are integral and
cannot be pressed apart. Before using this
press, make sure that you understand how
a component is built and pressed apart.
15. uNauTHORiZED
MODifiCaTiON.
modifying the press frame, increasing pump
relief pressure, installing non-hydraulic
hoses or fittings, or outright adding a higher
capacity piston or pump can cause struc-
tural failure and lead to a severe crushing
injury. if the press is insufficient for your
pressing task, use a press that is rated for
the correct load capacity.
12. SafE HyDRauLiC REPaiR. repair that
is performed by an unqualified person can
lead to press overload and line burst where
hydraulic oil is injected into your blood
stream resulting in blood poisoning. do not
attempt to repair the hydraulic system or
adjust the pressure relief valve unless you
are a qualified hydraulic service profes-
sional.
13. avOiDiNg HyDRauLiC POiSONiNg.
hydraulic fluid reaches extremely high
pressures and can cause blood poisoning
if injected into your blood stream. never
remove any hydraulic line, fitting, or com-
ponent, or attempt to check for leaks in
lines with your hands or fingers while the
system is under pressure.
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.
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SECTiON 2: SETuP
Needed for Setup
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!
the following items are needed to complete the
setup process, but are not included with your
machine.
Description
Qty
•
•
•
•
•
•
•
•
safety glasses ........................................... 1
disposable shop rags............... As needed
open-End Wrench 14mm........................... 1
open-End Wrench 16mm........................... 1
open-End Wrench 17mm........................... 1
open-End Wrench 18mm........................... 1
open-End Wrench 19mm........................... 1
pin-type spanner Wrench (1⁄4" pin) or
Wear safety glasses dur-
ing the entire setup pro-
cess!
1
hammer and ⁄4" drift punch ...................... 1
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.
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 (570) 546-9663
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.
When you are completely satisfied with the condi-
tion of your shipment, inventory the contents.
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A
B
inventory
E
d
F
the following is a description of the main compo-
nents shipped with your machine. lay the compo-
nents out to inventory them.
C
g
h
J
i
K
n
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.
m
l
o
p
Q
Description
Qty
figure 2. main inventory.
a. lower support plate 20mm thick.............. 1
B. Upper support plate 8mm thick................ 1
C. Bed support pins ....................................... 2
D. pressure gauge ......................................... 1
E. hydraulic pump 10-ton............................... 1
f. pump lever ................................................ 1
g. U-Beam ...................................................... 1
H. U-Beam w/pump mount............................. 1
i. press pin .................................................... 1
J. Upper spanner ring 15mm thick.............. 1
K. lower spanner ring 25mm thick.............. 1
L. Upper U-Beams ......................................... 2
M. Bed............................................................. 1
N. hydraulic ram 10-ton................................. 1
O. Base rails .................................................. 2
P. Arbor plates................................................ 2
Q. Base Cross support................................... 1
s
r
t
U
figure 3. Fastener inventory.
if any nonproprietary parts are missing (e.g. a
nut or a washer), we will gladly replace them; or
for the sake of expediency, replacements can be
obtained at your local hardware store.
Hardware
R. hex Bolts m12-1.75 x 110 C8.8
Qty
(Upper U-beams)........................................ 4
hex nuts m12-1.75 (Upper U-beams)......... 4
Flat Washers 12mm (Upper U-beams)....... 4
lock Washers 12mm (Upper U-beams)..... 4
S. hex Bolts m12-1.75 x 30 (Base rails) ........ 4
hex nuts m12-1.75 (Base rails)................. 4
Flat Washers 12mm (Base rails)............... 4
lock Washers 12mm (Base rails) ............. 4
T. hex Bolt m8-1.25 x 25 (pump mounting) ... 2
hex Bolt m8-1.25 x 16 (pump mounting).... 1
hex nuts m8-1.25 (pump mounting) .......... 2
Flat Washers 8mm (pump mounting)......... 3
lock Washers 8mm (pump mounting)....... 3
u. studs m12-1.75 x 150 (support plates) ...... 2
hex nuts m12-1.75 (support plates)........... 4
Flat Washers 12mm (support plates)......... 4
lock Washers 12mm (support plates)....... 4
SuffOCaTiON HaZaRD!
immediately discard all plas-
tic bags and packing materi-
als to eliminate choking/suf-
focation hazards for children
and animals.
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Site Considerations
Physical Environment
Weight Load
The physical environment where your machine
is operated is important for safe operation and
the longevity of its components. For best results,
operate this machine in a dry environment that is
free from excessive moisture, hazardous chemi-
cals, airborne abrasives, or extreme conditions.
Extreme conditions for this type of machinery are
generally those where the ambient temperature
range exceeds 41°–104°F; the relative humidity
range exceeds 20–95% (non-condensing); or the
environment is subject to vibration, shocks, or
bumps.
Refer to the Machine Data Sheet for the weight
of your machine. Make sure that the surface upon
which the machine is placed will bear the weight
of the machine, additional equipment that may be
installed on the machine, and the heaviest work-
piece that will be used. Additionally, consider the
weight of the operator and any dynamic loading
that may occur when operating the machine.
Lighting
Lighting around the machine must be adequate
enough that operations can be performed safely.
Shadows, glare, or strobe effects that may distract
or impede the operator must be eliminated.
Space Allocation
Consider the largest size of workpiece that will
be processed through this machine and provide
enough space around the machine for adequate
operator material handling or the installation of
auxiliary equipment. With permanent installations,
leave enough space around the machine to open
or remove doors/covers as required by the main-
tenance and service described in this manual.
See below for required space allocation.
Children or untrained people
may be seriously injured by
this machine. Only install in an
access restricted location.
45"
Wall
5"
12"
161⁄4
"
193⁄4
"
233⁄4
"
Keep
open
Keep
open
figure 4. minimum working clearances.
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4. Using a 17mm wrench, attach the base rails
and cross support to the U-beams with four
m12-1.75 x 30 hex bolts and four 12mm flat
washers, lock washers, and hex nuts, as
shown in figure 8.
assembly
To assemble your press:
1. put on safety glasses and heavy leather
boots.
Note: Make sure to position the apex of the
base cross support towards the bed as shown
in figure 8.
2. place both U-beams parallel on the floor so
the flanges are facing one another and both
beams have their row of pin holes at the
same end, as shown in figure 7.
Base
rail
row of pin holes
in U-Beam
Cross support Apex
pointing toward Bed
figure 8. Base cross support installation.
Apex of
5. slide the bed against the base rails to prevent
it from suddenly sliding to the base, and care-
fully tilt the press upright on its base.
pump
Bed Cross
mounting
supports
Bracket
figure 7. Bed installation.
6. install the upper U-beams with one m12-1.75
x 110 hex bolt and finger-tighten with a 12mm
flat washer, lock washer, and hex nut, as
shown in figure 9.
3. orient the bed so the apex of the cross sup-
ports are pointing toward the top end of the
U-beams and slide the bed onto the beams.
Note: This bolt will allow you to easily hinge
the U-beams in place for the rest of the fas-
teners.
make sure that the bed is positioned below
the pump mounting bracket on the end of the
rails where the rows of pin holes are located,
as shown in figure 7.
figure 9. Upper U-beam installation.
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10. remove the threaded spanner rings and the
press pin from the piston, and lay them out on
the workbench, as shown in figure 12.
7. swing the U-beams upward into alignment
with the mounting holes, and install the
remaining three m12-1.75 x 110 hex bolts with
12mm flat washers, lock washers, and hex
nuts, as shown in figure 10.
Note: The press pin is locked onto the ram
piston with a spring that is seated in the pis-
ton. Removal is done by just pulling on the
press pin.
15mm thick
spanner ring
press
pin
figure 10. Upper U-beam installation.
25mm thick
spanner
ring
8. Using an 18mm wrench, tighten all of the
upper U-beam fasteners.
figure 12. spanner ring removal.
9. install the 8mm and 20mm thick support
plates at the center upper U-beams, using a
19mm wrench and the two m12-1.75 studs,
four 12mm flat washers, lock washers, and
hex nuts as shown in figure 11.
11. position the 15mm spanner ring on top of
the lower support plate, and install the piston
assembly through the top of the support plate
holes, as shown in figure 13.
make sure that when you are finished equal
amount of threads protrude from the upper
and lower hex nuts.
thread
spanner
ring
onto the
piston
15mm
8mm support
plate
spanner
ring
figure 13. piston installation.
12. make sure that the thin 15mm spanner nut
shown in figure 13 is threaded onto the pis-
ton housing completely. otherwise, there will
not be enough thread exposed for the thicker
load-carrying spanner ring below. the 25mm
spanner ring must have full thread engage-
ment as this ring is the only support for the
piston during all press operations.
20mm support
plate
figure 11. support plate installation.
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13. thread the 25mm spanner ring onto the
piston housing as shown in figure 14 until
it is tight. then install the press pin onto the
piston ram.
17. remove the plastic caps and connect the
pressure gauge to the top of the piston hous-
ing with a 16mm and 27mm wrench. do not
use teflon tape or thread sealant of any kind
on this type of fitting, as it employs the seal-
ing ring shown in figure 16.
sealing ring
25mm
spanner
ring
figure 14. spanner ring installation.
figure 16. hydraulic line installation.
14. Wearing safety glasses, use a spanner
1
wrench (or a hammer and a ⁄4" drift punch)
18. remove the plastic caps, connect the pres-
sure line to the piston housing, and thread
the knurled nut onto the self-sealing hydrau-
lic fitting. do not use teflon tape or thread
sealant of any kind on this type of fitting, as
it employs a self-sealing design (see figure
17).
finish tightening the 25mm spanner ring an
additional ⁄8 turn.
1
15. Attach the hydraulic pump to the lower pump
bracket with the two m8-1.25 x 25 hex bolts,
two 8mm flat washers, lock washers and hex
nuts, as shown in figure 15.
hex Bolt
sealed Fit
Knurled
nut
figure 17. hydraulic line installation.
figure 15. pump installation.
16. place one 8mm lock washer and flat washer
onto the m8-1.25 x 16 hex bolt, and insert it
through the U-beam and tighten it into the
upper pump mounting bracket.
-13-
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19. With the help of another person, position the
press on the workbench where you want to
mount it.
Mounting
the base of this press has holes that allow it to be
mounted to a workbench. We strongly recommend
that you mount your press to a workbench to
prevent it from moving during operation. An
unexpected movement could result in an injury or
property damage.
20. Based on your choice of fasteners discussed
under Mounting, use the pre drilled holes in
the base rails as a guide to drill and mount
your press to the workbench.
21. position the bed on the bed support pins, and
place the arbor plates on the bed, as shown
in figure 18.
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 press to the
workbench.
Bed
support
pin
Bolt
Flat Washer
Machine Base
Workbench
Flat Washer
Lock Washer
Hex Nut
figure 18. typical arbor plate positioning.
22. Completely un-thread the reservoir breather
shown in figure 19 and leave it open. this
valve is closed so the hydraulic fluid is not lost
during shipping.
figure 5. Example of a through mount setup.
Another option for mounting is a "direct mount"
where the press is simply secured to the work-
bench with a lag screw.
Lag Screw
Flat Washer
Machine Base
figure 19. Breather fitting.
Workbench
23. go to the Maintenance section on Page 20
and bleed the hydraulic system as outlined.
figure 6. Example of a direct mount setup.
-14-
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SECTiON 3: OPERaTiONS
Operation Overview
To reduce the risk of
serious injury when using
this machine, read and
understand this entire
manual before beginning
any operations.
this overview is not intended to be an exact step-
by-step procedure, but rather a general example
of a typical press operation to assist in an under-
standing of the controls discussed in this section.
in a typical press operation, the operator does
the following:
1. puts on the required personal safety equip-
ment, and clears away all bystanders.
Damage to your eyes, fingers, or feet could
result from using this machine without prop-
er protective gear. always wear eye and face
protection, leather gloves, and leather boots
with extra toe protection.
2. inspects the workpiece and prepares it for
press operations.
3. retracts the hydraulic ram completely, and
positions the bed so there is the shortest dis-
tance between the press pin and workpiece.
4. Verifies that both bed support pins areinstalled
correctly and fully supporting the bed.
5. places a catch basket under the press with
the applicable padding to protect the part
when it drops.
Exceeding rated press capacity can damage
the press, shatter a workpiece, or launch a
press pin causing a severe impact injury.
When the press has reached its maximum
pressure or the pump lever becomes very
stiff to operate, the press has reached its
limit. Never use a cheater pipe for extra
leverage.
6. positions the arbor plates to support the
workpiece, and aligns the press pin or tooling
on the part to be pressed.
7. lowers the press ram to slightly preload the
workpiece.
8. Examines the setup from different angles,
and verifies that the press pin or tooling is
maintaining alignment with the workpiece
and the press ram.
NOTICE
if you have never used this type of machine
or equipment before, WE STRONgLy REC-
OMMEND 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.
9. While watching the pressure gauge, the
operator completes the press operation.
10. relieves the hydraulic pressure and allows
the ram to return to the retracted position.
-15-
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Controls
Workpiece
inspection
figure 20 shows the hydraulic pump controls
used for press operations. review the list below
to familiarise yourself with these controls.
Before using this hydraulic press, you must inspect
the workpiece. this is not a comprehensive list
but rather a list of common issues. it is up to you
to address any additional special items required to
prepare your workpiece for press operations. not
addressing the items below can lead to galled,
seized, or broken housings. in some situations,
ignoring just one of the listed items can lead to a
workpiece or tooling being ejected from the press,
which could cause severe injury or death.
a. Hydraulic Reservoir. stores and cools
hydraulic fluid.
B. Pressure gauge. indicates the hydraulic
system pressure.
C. Pump Lever. Allows the operator the neces-
sary leverage to build hydraulic pressure in
the piston for pressing operations.
•
Workpiece Strength: make sure that the
workpiece material is designed to withstand
the intended force the press will apply.
D. Pressure Relief valve. this valve is factory
set at a safe relief pressure and should not be
re-adjusted.
•
Workpiece Cleanliness: make sure that the
workpiece is clean and that all burrs, grit,
rust, or damage is removed from the pressing
path. often, light oiling on the components is
beneficial to prevent galling or seizing.
E. Control valve. When the valve is rotated
clockwise to the closed position, the pump
and piston are ready for press operations.
When the valve is rotated counterclockwise
to the open position, the pump and piston are
relieved of pressure, and the press retracts to
the unloaded position.
•
•
•
Pressing Path: make sure that the direction
of the component to be pressed on or off is
correct and that the correct size of sleeve or
arbor plate is used for support.
A
Retaining Mechanisms: make sure that
all retaining rings, pins, or fasteners are
removed, and no hidden secondary retainers
are present.
B
Hidden Projectiles: some components
house one or more springs. make sure that
the part to be dismantled with the press has
the applicable caging system to catch the
springs, should the workpiece slip or open up
when the retaining ring is removed and the
hydraulic pressure is relieved.
C
d
E
figure 20. pump controls.
•
Special Fits: make sure that interference fits
are correct before pressing a part on, and
make sure that the applicable parts have
been heated or chilled to the correct tempera-
tures to avoid galling and seizing. recognize
that not all parts were designed to be pressed
off. if in doubt, refer to the machinery repair
manual for the part you are working on.
-16-
model h6231z (mfg. since 1/10)
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ACCEssoriEs
SECTiON 4: aCCESSORiES
g8983—Tilting Roller Stand
Adjusts from 26" to 44", 0º-45º. 150 lb. capacity.
grizzly—Cast iron arbor Presses
Available in four powerful size configurations,
these handsomely cast arbor presses take
the effort out of stamping, seating, removing
bearings, and other operations that require simple,
well controlled mechanical pressure.
g8984—Single Roller Stand
Adjusts from 26 5⁄8" to 45". 250 lb. capacity.
g8985—5 Roller Stand
Adjusts from 26" to 445⁄8". 250 lb. capacity.
support long workpieces during pressing opera-
tions with adjustable height super heavy-duty
roller stands.
MODEL
CaPaCiTy
THROaT
WORKiNg
HEigHT
WEigHT
1
g4017
g4018
g4019
⁄
2
Ton
3"
4"
5"
20 lbs
29 lbs.
83 lbs.
135 lbs.
1 Ton
2 Ton
g4020 3 Ton
33⁄4
5"
"
73⁄4
"
g8983
71⁄2
"
111⁄8
"
g8985
g4017
g4020
g4019
g4018
g8984
figure 21. SHOP FOX® roller stands.
g7832—arbor Press Stand
this heavy-duty stand features a 31⁄4" x 4" x 5"
catch box, a 33⁄4" x 33⁄4" tray and cast iron table and
figure 23. grizzly arbor presses.
base. table is 36" high. slots at 45⁄8", 37⁄8" and 23⁄8
"
centers. threaded holes at 33⁄4", 51⁄2" and
71⁄2" centers.
grizzly—Number 2 and 3 arbor Presses
these are grizzly's top-of-the-line arbor presses
made for heavy industrial application.
MODEL
CaPaCiTy
THROaT
WORKiNg
HEigHT
WEigHT
H7830
H7831
2 Ton
3 Ton
53⁄4
65⁄8
"
"
63⁄4
113⁄4
"
"
70 lbs.
133 lbs.
H7831
H7830
g7832
figure 22. Arbor press stand
(press not included).
figure 24. industrial grade arbor presses.
-17-
model h6231z (mfg. since 1/10)
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SECTiON 5: MaiNTENaNCE
Lubrication
always relieve hydraulic pressure before
performing maintenance. failure to do this
may result in serious personal injury.
To lubricate the pump:
1. Using a hand-held oil gun, apply one or two
drops of any standard machine oil or motor oil
to all clevis pins, as shown in figure 25.
Schedule
For optimum performance from your machine, fol-
low this maintenance schedule, and refer to any
specific instructions given in this section.
Daily Check:
•
•
•
•
loose mounting bolts.
damaged or leaking hydraulic seals.
Frame cracks.
Any other unsafe condition.
Weekly Maintenance:
Workbench mounting bolts.
Clevis
pins
•
Every Three years:
replace hydraulic fluid.
figure 25. Clevis pins.
•
2. With the press completely retracted in the
uppermost position, use a 14mm wrench to
remove the breather fitting shown in figure
26, and fill the pump reservoir with any stan-
dard hydraulic oil until it runs from the port.
reinstall the breather fitting.
Cleaning
Cleaning the model h6231z is relatively easy.
Vacuum excess metal chips or contaminants
away from hydraulic seals and pivot pins. Wipe
off the remaining dust with a dry or lightly oiled
cloth.
Breather
Fitting
unpainted Cast iron
protect the unpainted metal surfaces on the bed
and arbor plates by wiping them clean after every
use.
Keep tooling and arbor plates rust-free with
regular applications of products like g96® gun
treatment, slipit®, or Boeshield® t-9.
figure 26. Breather fitting.
-18-
model h6231z (mfg. since 1/10)
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SECTiON 6: SERviCE
review the troubleshooting and procedures in this section to fix or adjust your machine if a problem devel-
ops. if you need replacement parts or you are unsure of your repair skills, then feel free to call our technical
support at (570) 546-9663.
Troubleshooting
Operation
piston is weak or
does not reach
rated pressing
capacity.
1. pump reservoir is low on oil.
2. system has air bubbles trapped in pump.
3. Control valve is at fault.
1. Fill pump reservoir to correct oil level Page 18.
2. Bleed air out of the pump as outlined on Page 20.
3. Verify that the control valve is closed.
4. pump or piston is at fault.
4. replace or have pump or piston rebuilt or replaced.
system loses
pressure under a
load.
1. Control valve is at fault.
2. pump or piston is at fault.
1. Verify that the control valve is closed.
2. replace or have pump or piston rebuilt or replaced.
pump lever feels
spongy during
pumping, or lever
has lost stroke.
1. pump reservoir is low on oil.
2. Air bubbles are trapped in pump.
3. pump or piston is at fault.
1. Fill pump reservoir to correct oil level Page 18.
2. Bleed air out of pump as outlined on Page 20.
3. replace or have pump or piston rebuilt or replaced.
pump handle
moves upward
while press is under
a load.
1. Air bubbles are trapped in pump.
2. pump or piston is at fault.
1. Bleed air out of pump as outlined on Page 20.
2. replace or have pump or piston rebuilt or replaced.
oil leaking from fill
plug, or other seals.
1. pump reservoir is overfilled.
2. hydraulic hose or fitting is leaking.
3. pump or piston is at fault.
1. remove the fill plug and drain-off excess oil (Page
18.
2. replace hydraulic hose or fitting.
3. replace or have pump or piston rebuilt or replaced.
-19-
model h6231z (mfg. since 1/10)
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4. reinstall the pump and refill the pump res-
ervoir with any quality hydraulic jack oil to
the point where oil begins to pour out of the
port.
Changing
Hydraulic Oil
5. reinstall the breather fitting and open the
breather knob completely.
to maintain the hydraulic system for trouble-free
service, every three years (or less under heavy
use), drain and refill the reservoir on the hydrau-
lic pump with any quality oil specified for use in
hydraulic jacks.
6. Close the control valve and pump the handle
to extend the press piston a few inches.
7. open the control valve, and allow the press
and the piston to fully retract once again until
the pressure gauge reads zero.
To change the hydraulic oil:
1. open the control valve (figure 27), and allow
the press and the piston to fully retract until
the pressure gauge reads zero.
8. remove the breather fitting shown and top-off
the hydraulic oil level as required to the point
where oil begins to pour out of the port.
9. Wipe down all fittings and lines.
10. reinstall the breather fitting leaving the
breather knob fully open.
Pump Bleeding
Control Valve
To bleed air from the pump:
figure 27. Control valve.
1. open the control valve completely and allow
the return piston to fully retract.
2. Close the breather knob and use a 17mm
wrench to remove the two pump retaining
bolts and the pump.
2. Using a 14mm wrench, remove the breather
fitting shown in figure 28, and top-off the
hydraulic oil level as required to the point
where oil begins to pour out of the port.
3. Using a 14mm wrench, remove the breather
fitting shown in figure 28. next, invert the
pump assembly and drain the hydraulic oil
into a waste oil container.
3. With the control valve still open, pump the
handle quickly with five or ten strokes.
4. Close the control valve, top off the oil level,
and reinstall the breather fitting making sure
that the breather knob is fully open.
Breather Breather
Fitting
Knob
figure 28. Breather fitting and knob.
-20-
model h6231z (mfg. since 1/10)
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SECTiON 7: PaRTS
Main Breakdown
12
37
11
32
33
13
10
30
31
27
17
35
29
19
18
28
22
8
20
21
36
14
34
25
9
24
1
6
2
3
7
27
5
26
25
4
16
15
REF PART #
DESCRIPTION
PUMP LEVER W/GRIP
HYDRAULIC PUMP 10-TON
REF PART #
PH6231Z019
DESCRIPTION
1
PH6231Z001
PH6231Z002
PH6231Z003
PH6231Z004
PH6231Z005
PH6231Z006
PH6231Z007
PH6231Z008
PH6231Z009
PH6231Z010
PH6231Z011
PH6231Z012
PH6231Z013
PH6231Z014
PB27M
19
20
21
22
24
25
26
27
28
29
30
31
32
33
34
35
36
37
U-BEAM W/O PUMP BRACKET
SPANNER RING 25MM THICK
PRESS PIN
2
PH6231Z020
PH6231Z021
PH6231Z022
PH6231Z024
PW04M
3
CONTROL VALVE KNOB BOLT
BASE LEG
4
HYDRAULIC HOSE
5
BASE CROSS SUPPORT
BED
RUBBER GRIP
6
FLAT WASHER 10MM
LOCK WASHER 10MM
HEX NUT M12-1.75
7
ARBOR PLATE
PLW06M
PN09M
8
U-BEAM W/PUMP BRACKET
BED PIN
9
PLW05M
PW06M
LOCK WASHER 12MM
FLAT WASHER 12MM
SPANNER RING 15MM THICK
HEX BOLT M8-1.25 x 16
LOCK WASHER 12MM
FLAT WASHER 12MM
FLAT WASHER 8MM
LOCK WASHER 8MM
HEX NUT M8-1.25
10
11
12
13
14
15
16
17
18
UPPER U-BEAM
PISTON ASSEMBLY 10-TON
HYDRAULIC PRESSURE GAUGE
STUD M12-1.75 X 150
HEX BOLT M12-1.75 x 110 C8.8
HEX BOLT M12-1.75 x 30
HEX BOLT M8-1.25 x 25
SUPPORT PLATE 8MM THICK
SUPPORT PLATE 20MM THICK
PH6231Z030
PB03M
PLW05M
PW06M
PW01M
PB07M
PLW04M
PN03M
PH6231Z017
PH6231Z018
PN09M
HEX NUT M12-1.75
-21-
model h6231z (mfg. since 1/10)
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Label Placement
100
101
REF PART #
DESCRIPTION
REF PART #
DESCRIPTION
100 PH6231Z100 MACHINE ID LABEL
101
PH6231Z101 SAFETY GLASSES LABEL
Safety labels warn about machine hazards and ways to prevent injury. The owner of this machine
MuST maintain the original location and readability of the labels on the machine. if any label is
removed or becomes unreadable, REPLaCE that label before using the machine again. Contact
grizzly at (800) 523-4777 or www.grizzly.com to order new labels.
-22-
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WARRANTY CARD
Name_____________________________________________________________________________
Street_____________________________________________________________________________
City _______________________ State_________________________ Zip _____________________
Phone #____________________ Email ________________________ Invoice #_________________
Model # ____________________ Order #_______________________ Serial #__________________
The following information is given on a voluntary basis. It will be used for marketing purposes to help us develop
better products and services. Of course, all information is strictly confidential.
1. How did you learn about us?
____ Advertisement
____ Card Deck
____ Friend
____ Website
____ Catalog
____ Other:
2. Which of the following magazines do you subscribe to?
____ Cabinetmaker & FDM
____ Family Handyman
____ Hand Loader
____ Popular Science
____ Popular Woodworking
____ Precision Shooter
____ Projects in Metal
____ RC Modeler
____ Rifle
____ Shop Notes
____ Wooden Boat
____ Woodshop News
____ Woodsmith
____ Handy
____ Woodwork
____ Home Shop Machinist
____ Journal of Light Cont.
____ Live Steam
____ Woodworker West
____ Woodworker’s Journal
____ Other:
____ Model Airplane News
____ Old House Journal
____ Popular Mechanics
____ Shotgun News
____ Today’s Homeowner
____ Wood
3. What is your annual household income?
____ $20,000-$29,000
____ $30,000-$39,000
____ $40,000-$49,000
____ $70,000+
____ $50,000-$59,000
____ $60,000-$69,000
4. What is your age group?
____ 20-29
____ 30-39
____ 60-69
____ 40-49
____ 70+
____ 50-59
5. How long have you been a woodworker/metalworker?
____ 0-2 Years ____ 2-8 Years
____ 8-20 Years
____20+ Years
____10+
6. How many of your machines or tools are Grizzly?
____ 0-2 ____ 3-5
____ 6-9
7. Do you think your machine represents a good value?
8. Would you recommend Grizzly Industrial to a friend?
_____Yes
_____Yes
_____No
_____No
9. Would you allow us to use your name as a reference for Grizzly customers in your area?
Note: We never use names more than 3 times. _____Yes _____No
10. Comments:_____________________________________________________________________
_________________________________________________________________________________
_________________________________________________________________________________
_________________________________________________________________________________
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FOLD ALONG DOTTED LINE
Place
Stamp
Here
GRIZZLY INDUSTRIAL, INC.
P.O. BOX 2069
BELLINGHAM, WA 98227-2069
FOLD ALONG DOTTED LINE
Send a Grizzly Catalog to a friend:
Name_______________________________
Street_______________________________
City______________State______Zip______
TAPE ALONG EDGES--PLEASE DO NOT STAPLE
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WaRRaNTy aND RETuRNS
WARRANTY AND 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.
To take advantage of 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.
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.
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.
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Buy Direct and Save with Grizzly® – Trusted, Proven and a Great Value!
~Since 1983~
Visit Our Website Today For
Current Specials!
ORDER
24 HOURS A DAY!
1-800-523-4777
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