Enerpac SGH Series User manual

1
L4180 Rev. D 08/17 EN
POWERFUL SOLUTIONS. GLOBAL FORCE.
Instruction Sheet
SGH-Series
Hydraulic Sync Grip Pullers
and Accessories
Table of Contents:
Section Page
1.0 IMPORTANT RECEIVING INSTRUCTIONS . . . . . 1
2.0 SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3.0 CONFORMANCE TO NATIONAL AND
INTERNATIONAL STANDARDS . . . . . . . . . . . . . . 2
4.0 PRODUCT DESCRIPTION . . . . . . . . . . . . . . . . . . 2
5.0 HYDRAULIC SYSTEM . . . . . . . . . . . . . . . . . . . . . 3
6.0 SETUP AND ASSEMBLY . . . . . . . . . . . . . . . . . . . 7
7.0 INSTALLATION AND OPERATION . . . . . . . . . . . . 7
8.0 INSPECTION, MAINTENANCE & STORAGE . . . . 10
9.0 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . 10
10.0 CAPACITIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
11.0 PRODUCT DATA. . . . . . . . . . . . . . . . . . . . . . . . . 13
1.0 IMPORTANT RECEIVING INSTRUCTIONS
Visually inspect all components for shipping damage. Shipping
damage is not covered by warranty. If shipping damage is
found, notify carrier at once. The carrier is responsible for
all repair and replacement costs resulting from damage in
shipment.
2.0 SAFETY
2.1 Introduction
Read all instructions carefully. Follow all recommended safety
precautions to avoid personal injury as well as damage to the
product and/or damage to other property. Enerpac cannot be
responsible for any damage or injury from unsafe use, lack of
maintenance or incorrect operation. Do not remove warning
labels, tags, or decals. In the event any questions or concerns
arise, contact Enerpac or your local Enerpac distributor for
clarification.
If you have never been trained on high-pressure hydraulic
safety, consult your distributor or service center for information
about an Enerpac Hydraulic Safety Course.
This manual follows a system of safety alert symbols, signal
words and safety messages to warn the user of specific
hazards. Failure to comply with these warnings could result
in death or serious personal injury, as well as damage to the
equipment or other property.
The Safety Alert Symbol appears throughout this
manual. It is used to alert you to potential physical
injury hazards. Pay close attention to Safety Alert
Symbols and obey all safety messages that follow this symbol
to avoid the possibility of death or serious personal injury.
Safety Alert Symbols are used in conjunction with certain
Signal Words that call attention to safety messages or property
damage messages and designate a degree or level of hazard
seriousness. The Signal Words used in this manual are
WARNING, CAUTION and NOTICE.
WARNING Indicates a hazardous situation that, if not
avoided, could result in death or serious
personal injury.
CAUTION
Indicates a hazardous situation that, if not
avoided, could result in minor or moderate
personal injury.
NOTICE
Indicates information considered important,
but not hazard related (e.g. messages relating
to property damage). Please note that the
Safety Alert Symbol will not be used with this
signal word.
2.2 Safety Precautions - Hydraulic Sync Grip Pullers
WARNING
Failure to observe and comply with the following
precautions could result in death or serious personal injury.
Property damage could also occur.
• Read and completely understand the safety precautions
and instructions in this manual before operating the puller or
preparing it for use.
• Wear appropriate personal protective equipment (PPE) such
as safety glasses and face shield. The operator must take
precautions against injury due to flying debris caused by
possible failure of the tool or workpiece.
• During operation, keep hands and fingers away from the
work area to avoid personal injury.
• DO NOT use the puller in circumstances where a sudden
release of hydraulic pressure could result in loss of balance,
causing damage or injury.
• Never overload the puller or accessories. Never exceed
puller maximum capacities or maximum allowable hydraulic
working pressures. Refer to Sections 10.1 and 10.2 of this
manual for detailed puller capacity information. Also observe
and follow all operating precautions and pressure limits
communicated in Section 7 of this manual.

2
• Be aware that puller capacity will vary, depending on the
puller model, configuration and other variables. In some
instances, the rated capacity of the puller may be less than
the rated capacity of the hydraulic cylinder.
• Never attempt to pry the puller by inserting tools or other
objects between the jaws. This may cause center bolt
damage.
• Use hydraulic pressure gauges to verify proper operating
pressure in the hydraulic system. Do NOT exceed maximum
pressure limits of the lowest rated component in your
system. Always use high pressure hoses and fittings.
• It is impossible to predict the exact force needed for every
pulling situation. The amount of press fit and force of removal
can vary greatly between jobs. Set-up requirements along
with the size, shape and condition of the parts being pulled
are variables which must be considered. Study each pulling
application before you select your puller.
• Do not overload equipment. Use the correct size puller for
your application. If you have applied maximum force, and the
part still will not move, then use a larger capacity puller. Use
of a sledge hammer to loosen parts is not recommended.
• Do not use puller if threads on adjusting rod, threaded collar
or hydraulic cylinder are damaged or worn. Do not use puller
if adjusting rod is bent.
• Do not over-extend the hydraulic cylinder. Do not operate
the cylinder beyond the limits of its rated stroke.
• Apply force gradually. Align puller grip jaws as required. Be
sure the setup is rigid and that puller is square with the work.
• Never use a puller that is damaged, altered or in need of
repair.
• Always be sure that the adjusting rod is loosened and
hydraulic pressure is completely relieved before performing
any puller adjustment or repair procedures. Never service
the puller while it is installed and under tension.
• Always read, understand and follow all safety precautions
and instructions, including those that are contained within
the procedures of this manual.
2.3 Additional Hydraulic Safety Precautions
WARNING
Failure to observe and comply with the following
precautions could result in death or serious personal
injury. Property damage could also occur.
• Do not remove or disable the pump relief valve. Never set
the relief valve to a higher pressure than the maximum rated
pressure of the pump.
• The puller hydraulic cylinder is designed for a maximum
pressure of 10,150 psi [700 bar]. Do not connect a pump
with a higher pressure rating to the cylinder.
• To avoid personal injury and equipment damage, make sure
all hydraulic components are rated for at least 10,150 psi
[700 bar] working pressure.
• The system operating pressure must not exceed the
pressure rating of the lowest rated component in the system.
Install pressure gauge(s) in the system to monitor operating
pressure. It is your window to see what is happening in the
system.
• Make sure that all system components are protected from
external sources of damage, such as excessive heat, flame,
moving machine parts, sharp edges and corrosive chemicals.
• Do not handle pressurized hoses. Escaping oil under
pressure can penetrate the skin. If oil is injected under the
skin, see a doctor immediately.
• Always do a visual inspection of the puller and puller hydraulic
system before placing it into operation. If any problems are
found, do not use the puller. Have the equipment repaired
and tested before it is returned to service.
• Never use a hydraulic cylinder that is leaking oil. Do not use
a cylinder that is damaged, altered or in need of repair.
• Do not loosen plugs, relief valves or any other hydraulic
components unless hydraulic pressure is completely
relieved.
• Always be sure that hydraulic pressure is fully relieved
before disconnecting hydraulic hoses, loosening hydraulic
couplers, or performing any cylinder disassembly or repair
procedures.
• Always read, understand and follow all safety precautions
and instructions, including those that are contained within
the procedures of this manual.
CAUTION
Failure to observe and comply with the following
precautions could result in minor or moderate personal
injury. Property damage could also occur.
• Avoid damaging hydraulic hose. Avoid sharp bends and
kinks when routing hydraulic hoses. Using a bent or kinked
hose will cause severe back-pressure. Sharp bends and
kinks will internally damage the hose, leading to premature
hose failure.
• Do not drop heavy objects on hose. A sharp impact may
cause internal damage to hose wire strands. Applying
pressure to a damaged hose may cause it to rupture.
• Do not lift hydraulic equipment by the hoses or swivel
couplers. Use the carrying handle or strap.
• Keep hydraulic equipment away from flames and heat.
Excessive heat will soften packings and seals, resulting in
fluid leaks. Heat also weakens hose materials and packings.
For optimum performance, do not expose equipment to
temperatures of 150˚F [65˚C] or higher. Protect all hydraulic
equipment from weld spatter.
• Immediately replace worn or damaged parts with genuine
Enerpac parts. Enerpac parts are designed to fit properly
and to withstand high loads. Non-Enerpac parts may break
or cause the product to malfunction.
NOTICE
• Hydraulic equipment must only be serviced by a qualified
hydraulic technician. For repair service, contact the Enerpac
Authorized Service Center in your area.
• To help ensure proper operation and best performance, use
of Enerpac oil is strongly recommended.
3.0 CONFORMANCE TO NATIONAL AND
INTERNATIONAL STANDARDS
Enerpac declares that this product has been tested
and conforms to applicable standards and is
compatible with all CE Requirements. A copy of an
EU Declaration of Incorporation is enclosed with each shipment
of this product.
4.0 PRODUCT DESCRIPTION
4.1 Sync Grip Hydraulic Puller (SGH-Series)
The Sync Grip Hydraulic puller can be used to remove and
install gears, bearings and pulleys.
Four dierent puller models in a variety of capacities are
available. Refer to the documentation provided with your
shipment for model numbers and additional product data.
The Sync Grip puller's synchronized closing system means
that all jaws move in unison, reducing the chance of damage to
the puller components and making the puller easier and safer
to use.

3
4.2 Sync Grip Puller Set (GPS-Series)
The Enerpac Sync Grip Puller Set includes the following items:
• Sync Grip hydraulic grip puller (SGH-Series).
• Hydraulic pump, electric, air, battery or hand operated.
• Hydraulic hose, 6 feet [1.8 m] long.
• Hydraulic pressure gauge and gauge adapter.
• Hydraulic cylinder with coupler.
The specific items included in the Sync Grip Puller Set will vary,
depending on the puller size and the pump type ordered.
4.3 Master Puller Set (MPS-Series)
The Enerpac Master Puller Set includes all the items of the
Sync Grip Puller Set plus the following additional items:
• Bearing Cup Puller Attachment
• Cross Bearing Puller Components
• Bearing Separator Attachment
• Mounting and attaching hardware
These attachments allow the puller to be configured as a
bearing cup puller or as a cross style bearing puller. They are
designed for work environments where clearance prevents a
direct application of the puller jaws.
For these configurations, the grip puller jaws, puller body and
self-centering mechanism are not used.
The specific items included in the Master Puller Set will vary,
depending on the puller size and the pump type ordered.
5.0 HYDRAULIC SYSTEM
5.1 Hydraulic Component Requirements
All hydraulic components used with the puller, including pump,
cylinder, pressure gauge, hoses and fittings must be rated for
at least 10,150 psi [700 bar] maximum working pressure.
The pump must include a safety relief valve that opens if the
maximum hydraulic working pressure of 10,150 psi [700 bar]
is exceeded.
WARNING
Pump safety relief valve must not be set
higher than 10,150 psi [700 bar]. Failure to observe this
precaution could result in high pressure oil leaks and/or
catastrophic failure. Serious personal injury or death could
result.
Electric, air and battery powered pumps must also include
a user-adjustable relief valve, allowing the user to adjust the
maximum working pressure to the correct setting for the puller
application. For some puller configurations and applications,
this setting will be less than the pump safety relief valve setting.
This information is provided for users who may wish to use
the puller with the existing hydraulic components in their shop
facilities. All hydraulic components included in an Enerpac
Sync Grip Puller Set or Master Puller Set will conform to the
stated specifications and requirements.
5.2 Hydraulic Cylinder
The hydraulic cylinder is pre-assembled in the body of the
Sync Grip puller. When needed, the cylinder can be removed
from the Sync Grip puller for use with various Master Puller Set
components.
Refer to the following table for hydraulic cylinder usage
information:
Hydraulic Cylinder Usage Information
Enerpac
Cylinder
Model No.
Sync Grip
Puller
Model No.
Master Puller Set Components
Cross
Bearing
Puller
Bearing
Separator
Bearing
Cup Puller
RWH121 SGH14 BHP2772 BHP181 BHP180
RCH202 SGH24 BHP262 BHP282 BHP280
RCH302 SGH36 BHP362 BHP382 BHP380
RCH603 SGH64 BHP562 BHP582 BHP580
Note: Cylinder model RWH121 uses one 1/4" NPTF female coupler
(Enerpac AR630). Cylinder models RCH202, RCH302 and RCH603
use one 3/8" NPTF male coupler (Enerpac CH604).
WARNING Use only the Enerpac cylinder specified for
your puller model. Improper operation and/or catastrophic
failure could occur if a dierent cylinder is used. Serious
personal injury or death may result.
Sync Grip Puller
Figure 1, Hydraulic Puller Configurations (Typical)
Cross Bearing Puller
and Bearing Separator
Bearing Cup Puller

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Figure 2, Setup and Assembly - Sync Grip Puller
1
234
3
5
6
9
7
8
10
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93
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Key:
1. Adjusting Rod
2. Hex Nut
3. Plate
4. Jaw, Standard Length
Jaw, Extended Reach (optional)
5. Capscrew
6. Strap
7. Assembly, Self-Centering
8. Body
9. Hydraulic Cylinder
10. Mounting Screw
1
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6
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1
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93
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Two-jaw Configuration
(Model SGH14)
Note: Components shown in this figure are
included with the GPS-Series Sync Grip
Puller Set and the MPS-Series Master Puller
Set.
Extended reach “long”jaws are an optional
accessory for all pullers.
Three-jaw Configuration
(Model SGH14)
Three-jaw Configuration
(Models SGH24, SGH36 and SGH64)

5
Figure 3, Setup and Assembly - Bearing Cup Puller
1
2
3
4
56
7
8
8
8
10
11
12
9
1
2
3
4
56
7
8
8
8
10
11
12
9
(Assembled View)
Key:
1. Adjusting Rod
2. Threaded Saddle
3. Hydraulic Cylinder
4. Hex Nut
5. Slide Plate
6. Slotted Crosshead
7. Leg Washer
8. Leg (various lengths)
9. Leg Reducer
10. Leg End
11. Mounting Screw
12. Internal Bearing Race Puller
Note: Components shown in this figure are included
with the MPS-Series Master Puller Set.

6
Figure 4, Setup and Assembly - Cross Bearing Puller
6
1
13
11
4
5
6
8
3
2
7
8
8
9
10
6
1
13
11
4
5
6
8
3
2
7
8
8
9
10
(Assembled View - With Bearing Separator)
Key:
1. Adjusting Rod
2. Threaded Saddle
3. Hydraulic Cylinder
4. Hex Nut
5. Slide Plate
6. Slotted Crosshead
7. Leg Washer
8. Leg (various lengths)
9. Leg Reducer
10. Leg End
11. Mounting Screw
13. Bearing Separator Attachment
6
1
13
11
4
5
6
8
3
2
7
8
8
9
10
(Assembled View - Without Bearing Separator)
Note: Components shown in this figure are included
in the MPS-Series Master Puller Set.

7
5.3 Checking Oil Level
Check the oil level in the pump reservoir with the cylinder fully
retracted. Add oil if level is low. Refer to the pump instruction
sheet for detailed instructions and oil type.
Be sure to use a high quality hydraulic oil. Use of Enerpac oil is
strongly recommended.
5.4 Advancing and Retracting the Cylinder
• To advance: Close the pump release valve. Operate the
pump to build pressure and advance the cylinder.
• To retract: Open the pump release valve to release pressure
and retract the cylinder.
For detailed hydraulic component operating instructions, refer
to the instruction sheet included with the pump, hose, pressure
gauge and hydraulic cylinder. Completely observe and follow
all communicated instructions and safety precautions.
5.5 Air Removal
To remove trapped air from the hydraulic circuit, fully advance
and retract the puller cylinder several times while it is not under
load. If possible, position the cylinder so that it is lower than
the pump reservoir. Avoid pressure build-up as the cylinder is
being cycled. Air removal is complete when cylinder motion
becomes smooth.
6.0 SETUP AND ASSEMBLY
6.1 Handling Large Pullers
• Use a crane and slings of suitable rated capacity to lift and
unload the puller.
• Know the weight of the complete puller assembly, including
puller, hydraulic cylinder and all attachments.
• Be careful when lifting the puller while it is in the vertical
position, as the legs will close.
• If needed, support the puller with slings so that it can be
used horizontally. When reorienting the puller from horizontal
to the vertical position, incline the puller slowly and carefully.
6.2 Puller Configurations
The puller may be assembled in one of three dierent
configurations:
1) Sync Grip Puller
2) Bearing Cup Puller
3) Cross Bearing Puller
Note that components required to assemble the bearing cup
puller and cross bearing puller (items 2 and 3) are included only
with the Master Puller Set.
Refer to figures 2, 3 and 4 for assembly details. Refer to
the following sections of this manual for detailed operation
instructions for each configuration.
6.3 Jaw Arrangement - Sync Grip Puller
Three standard length jaws are provided with the puller.
Extended reach “long”jaws, are available as an optional
accessory for all puller models.
Model SGH14 can be configured as either a two-jaw or three-
jaw puller. The three-jaw configuration provides a more stable
and secure grip, resulting in a more evenly distributed pulling
force. For this reason, the three-jaw configuration should be
used whenever possible.
Models SGH24, SGH36 and SGH64 can be assembled only in
the three-jaw configuration.
7.0 INSTALLATION AND OPERATION
NOTICE
Before operating any high force tool equipment, it
is mandatory that the operator has a full understanding of all
instructions and safety precautions included in this manual,
and of all applicable local safety regulations and laws. If
questions or concerns, contact the Enerpac Technical Service
Department or your local Enerpac distributor.
7.1 Adjusting Rod Point Protector
All models feature a threaded adjusting rod with a tempered
steel point.
A point protector is packed separately with all SGH-Series
models. To prevent damage, the point protector MUST be
used if the shaft end does not contain a drilled center hole or
depression. See Figure 5.
Figure 5, Point Protector
OK
OK
POINT PROTECTOR
7.2 General Puller Use Instructions
• Be sure that the puller adjusting rod is cleaned and greased
before use.
• Be sure that the jaws are properly centered on the item to
be removed.
• Position the point of the adjusting rod into the center hole
of the shaft or axle. If there is no center hole, use a point
protector (included with all pullers).
• After mounting the puller on the part to be removed, be
certain that the thread engagement indicator is visible. See
Figure 6 for location. If the adjusting rod is turned clockwise
too many turns, the indicator will be hidden, indicating that
the amount of thread engagement is not sucient.
WARNING
Do not operate the puller if the thread engagement
indicator is not visible. Catastrophic failure could occur if
the amount of thread engagement is not sucient. Serious
personal injury or death may result.
NOTICE
If the thread engagement indicator is not visible,
remove the puller and reinstall the jaws using the next lowest
set of mounting holes.
Figure 6, Thread engagement indicator (red band)

8
• To reduce the possibility of jaw deformation, always work
with the jaws installed in the lowest possible mounting
holes. Use the higher mounting holes only if necessary to
provide clearance around large components. See Figure 7.
Figure 7, Jaw Mounting Positions (typical)
Lowest Position
(preferred)
Highest Position
• Continuously monitor the hydraulic pressure gauge while
operating the pump and puller. Stop the pump immediately
if the maximum allowable hydraulic pressure for your puller
model and configuration is reached.
• During operation, watch the puller for indications of jaw or
adjusting rod deformation. See Figure 6. If any deformation
is noticed, stop the pump immediately.
• In some applications, the amount of deformation may
be so small that it is not noticeable. Never rely on visible
deformation to determine the puller's safe operating limits.
Always monitor the hydraulic pressure gauge.
• Work slowly when operating the puller in order to prevent
any sudden or unexpected displacement of parts being
removed.
• If needed, use a spacer of appropriate size to reduce the
possibility of adjusting rod deformation. The spacer should
be a solid steel billet with flat ends and a diameter that is
larger than that of the adjusting screw.
Figure 8, Checking for Deformation
7.3 Sync Grip Puller - Installation and Operation
• Assemble puller components as described in Figure 2. Refer
to Section 6.2 for additional information.
NOTICE
Model SGH14 can be configured as either a two or
three-jaw puller. The three-jaw configuration is recommended
because it provides the most even distribution of pulling force.
• Refer to sections 11.1 and 11.3 for additional jaw assembly
details, specifications and dimensions.
• Install the puller on the pulley or other part to be removed.
See Figure 9 for examples.
• Read and understand the following hydraulic pressure
warning statements before proceeding. Also refer to Section
10.1 of this manual for additional related information.
WARNING
Models SGH14, SGH24 and SGH36:
Do not exceed 5076 psi [350 bar] when using Sync Grip
puller model SGH14 in the two-jaw configuration.
Do not exceed 10,150 psi [700 bar] when using Sync Grip
puller model SGH14 in the three-jaw configuration.
Do not exceed 10,150 psi [700 bar] when using Sync Grip
puller models SGH24 and SGH36.
Overloading and catastrophic failure could occur if the
stated maximum pressure limit for your puller model and
configuration is exceeded. Serious personal injury or death
may result.
WARNING
MODEL SGH64 Only:
Do not exceed 7850 psi [540 bar] when using Sync Grip
puller model SGH64.
Overloading and catastrophic failure could occur if this
maximum pressure limit is exceeded. Serious personal
injury or death may result.
Be aware that for model SGH64, the puller maximum rated
capacity is approximately 25 percent less than the cylinder
maximum rated capacity. For this reason, use extreme care
to avoid exceeding the 7850 psi [540 bar] pressure limit
during puller operation.
Two-Jaw Configuration
(Model SGH14 only)
Three-Jaw Configuration
(all models)
Figure 9, Pulley Removal (typical)

9
• Connect pump and hose to the puller hydraulic cylinder. Be
sure that a pressure gauge is installed in the circuit.
• Gradually apply hydraulic pressure to remove the part.
Continuously monitor the pressure gauge to avoid exceeding
the allowable maximum working pressure for your setup.
7.4 Cross Bearing Puller - Installation and Operation
• Assemble puller components as described in Figure 4.
• Install the puller on the bearing, pulley or other item to be
removed. Align puller legs. See Figure 10.
• If needed for your application, install the bearing separator
attachment. Refer to Section 7.5.
• Read and understand the following warning statement before
proceeding. Also refer to Section 10.2 of this manual for
important maximum hydraulic working pressure information.
WARNING
Do not exceed the stated maximum hydraulic working
pressure for the cross bearing puller model being used.
Refer to Section 10.2 of this manual for the maximum
hydraulic working pressure applicable to your cross
bearing puller model. Be aware that the cross bearing
puller is rated at a lower maximum capacity than the
hydraulic cylinder.
Overloading and catastrophic failure could occur if the
stated maximum pressure limit is exceeded. Serious
personal injury or death may result.
• Connect pump and hose to the puller hydraulic cylinder. Be
sure that a pressure gauge is installed in the circuit.
• Gradually apply hydraulic pressure to remove the part.
Continuously monitor the pressure gauge to avoid exceeding
the allowable maximum working pressure for your setup.
Figure 10, Cross Bearing Puller (typical)
7.5 Bearing Separator Attachment
In situations where limited work room prevents a direct
application of the grip puller jaws, the bearing separator
attachment can be used in combination with the cross bearing
puller.
The bearing separator attachment contains wedge shaped
edges, allowing it to be more easily positioned behind a
dicult-to-reach bearing, pulley or other shaft-mounted
component. It has two halves, each containing a “flat”side
and a “recessed”side.
Whenever possible, it is recommended that the attachment
be installed in the “A”orientation, as shown in Figure 11, so
that the flat side of each separator half is positioned against
the part to be removed. This will help spread the load over a
greater surface area, reducing the possibility of deformation.
However, for applications where work room is especially
limited, it may be necessary to begin the pulling process
with the attachment installed in the “B” orientation, as shown
in Figure 12. In this orientation, the recessed side of each
separator half is positioned against the part to be removed.
After the part has been moved a sucient distance on the shaft,
the attachment should be reinstalled in the “A” orientation. The
removal process can then be fully completed.
When using the bearing separator attachment, follow the
instructions and precautions contained in Section 7.4 of
this manual. Also refer to Section 10.2 for maximum rated
capacities and related information.
Figure 11, Bearing Separator Attachment -
“A”Orientation (typical)
Figure 12, Bearing Separator Attachment -
“B”Orientation (typical)

10
7.6 Bearing Cup Puller - Installation and Operation
• Assemble puller components as shown in Figure 3.
• Install the puller on the bearing to be removed. Align puller
legs and bearing cup puller jaws. See Figure 12.
• Read and understand the following warning statement
before proceeding. Also refer to Section 10.2 of this
manual for important maximum hydraulic working pressure
information.
WARNING
Do not exceed the stated maximum hydraulic working
pressure for the bearing cup puller model being used.
Refer to Section 10.2 of this manual for the maximum
hydraulic working pressure applicable to your bearing cup
puller model. Be aware that the bearing cup puller is rated
at a lower maximum capacity than the hydraulic cylinder.
Overloading and catastrophic failure could occur if the
stated maximum pressure limit is exceeded. Serious
personal injury or death may result.
• Connect pump and hose to the puller hydraulic cylinder. Be
sure that a pressure gauge is installed in the circuit.
• Gradually apply hydraulic pressure to remove the bearing.
Continuously monitor the pressure gauge to avoid exceeding
the allowable maximum working pressure for your setup.
Figure 12, Cross Bearing Puller with
Bearing Cup Attachment (typical)
8.0 INSPECTION, MAINTENANCE & STORAGE
Maintenance is required when wear or leakage is noticed.
Periodically inspect all components to detect any problem
requiring maintenance or service.
• Periodically check the hydraulic system for loose
connections, leaks and other obvious problems. Replace
any damaged components immediately.
• Monitor the oil temperature during operation. Do not exceed
oil temperatures of 140°F [60°C].
• Keep all hydraulic components clean.
• Keep the puller in good condition. Clean and lubricate the
puller’s adjusting rod and puller legs frequently, from thread
to tip, to ensure good operation and long life.
• Change the hydraulic oil in your system as recommended
in the pump instruction sheet. Use of Enerpac oil is strongly
recommended.
• Periodically check the puller for any bent, loose, worn or
deformed components. Make repairs as required before
using the puller.
• Store the puller in a clean, dry and secure location. Keep
stored hydraulic cylinders and hoses away from heat and
direct sunlight.
• If the puller requires repairs, refer to the Enerpac website for
the repair parts sheet applicable to your puller model.
NOTICE
Hydraulic equipment must only be serviced by a
qualified hydraulic technician. For repair service, contact the
Enerpac Authorized Service Center in your area.
9.0 TROUBLESHOOTING
Refer to the troubleshooting guide (see next page) when
diagnosing puller operational problems. Please note that
the troubleshooting guide is not all-inclusive, and should be
considered only as an aid to help diagnose the most commonly
anticipated problems.
For repair service, contact your nearest Enerpac Authorized
Service Center. As required, also refer to the troubleshooting
information provided with the hydraulic pump and cylinder.

11
Troubleshooting Guide, SGH-Series Sync Grip Pullers
Puller Mechanical Troubleshooting
Symptom Possible Cause Solution
1. Jaws do not move
freely or are dicult to
move.
Self-centering mechanism corroded or seized. Inspect self-centering mechanism. If corroded or seized,
apply penetrating oil. Dismantle and clean mechanism as
required.
2. One jaw moves
independently.
Self-centering strap damaged or broken. Replace self-centering strap.
Replace complete self-centering mechanism if needed.
3. Adjusting rod will
not turn or requires
excessive eort to
turn.
a. Corroded threads on adjusting rod, cylinder or
threaded saddle.
If parts are seized, apply penetrating oil.
Inspect threads on adjusting rod, cylinder and threaded
saddle. Dismantle and clean components as required.
b. Worn or damaged threads. Replace adjusting rod, hydraulic cylinder and/or threaded
saddle as required.
Do not use puller if threads are worn or damaged.
c. Adjusting rod is bent. Replace adjusting rod.
Do not use puller if adjusting rod is bent.
Hydraulic System Troubleshooting
Symptom Possible Cause Solution
1. Cylinder will not
advance.
a. Pump release valve open. Close pump release valve.
b. Pump oil level is low. Add oil to pump reservoir as required.
c. Air in hydraulic system. Remove air from hydraulic system. Refer to Section 5.5.
d. Couplers not fully tightened. Tighten couplers.
e. Blocked hydraulic hose. Repair or replace hydraulic hose.
f. Pump malfunctioning. Repair or replace pump as required.
g. Cylinder seals leaking. Repair or replace cylinder.
2. Cylinder advances
only part way.
a. Pump oil level is low. Add oil to pump reservoir as required.
b. Couplers not fully tightened. Tighten couplers.
c. Cylinder plunger binding. Repair or replace cylinder.
3. Cylinder advances
erratically.
a. Air in hydraulic system. Remove air from hydraulic system. Refer to Section 5.5.
b. Cylinder plunger binding. Repair or replace cylinder.
4. Cylinder advances
more slowly than
normal.
a. Leaking connection. Repair leaking connection.
b. Couplers not fully tightened. Tighten couplers.
c. Pump malfunctioning. Repair or replace pump as required.
5. Cylinder advances,
but will not hold.
a. Cylinder seals leaking. Repair or replace cylinder.
b. Leaking or loose connection. Repair leaking connection.
c. Pump malfunction. Repair or replace pump.
6. Cylinder leaks oil. a. Leaking or loose connection. Repair leaking connection.
b. Worn or damaged cylinder plunger. Repair or replace cylinder.
c. Internal leakage. Repair or replace cylinder.
7. Cylinder will not
retract or retracts
more slowly than
normal.
a. Pump release valve closed. Open pump release valve.
b. Coupler not fully tightened. Tighten coupler.
c. Pump reservoir is overfilled. Drain oil from pump reservoir as required.
d. Blocked hydraulic hose. Repair or replace hydraulic hose.
e. Internal cylinder damage. Repair or replace cylinder.

12
10.1 Maximum Rated Capacity Information - Grip Pullers
Grip
Puller
Model
No.
Hyd.
Cylinder
Model
No.
Quantity of
Jaws Installed
Grip Puller Maximum
Rated Capacity
Cylinder Maximum
Rated Capacity
Maximum allowable
hydraulic working pressure
when cylinder is installed
on grip puller:
US Tons kN US Tons kN psi bar
SGH14 RWH121 2 7.0 75 14.0 125 5076 350
RWH121 3 14.0 125 14.0 125 10,150 700
SGH24 RCH202 3 24.0 214 24.0 214 10,150 700
SGH36 RCH302 3 36.7 326 36.7 326 10,150 700
SGH64 RCH603 3 50.0 445 64.6 575 7850 540
NOTES:
• Model SGH14: Grip puller maximum rated capacity is reduced by 50 percent when used in the two-jaw configuration.
• Model SGH64: Grip puller maximum rated capacity is approximately 25 percent less than the cylinder maximum rated capacity.
10.2 Maximum Rated Capacity Information - Puller Accessories
Accessory
Description
Accessory
Model
Number
Hyd.
Cylinder
Model
No.
Accessory Maximum
Rated Capacity
Cylinder Maximum
Rated Capacity
Maximum allowable
hydraulic working
pressure when cylinder is
used with accessory:
US Tons kN US Tons kN psi bar
Cross Bearing
Puller Set
BHP2772 RWH121 7.0 75 14.0 125 5076 350
BHP262 RCH202 12.0 107 24.0 214 5076 350
BHP362 RCH302 18.3 163 36.7 326 5076 350
BHP562 RCH603 25.0 222 64.6 575 3925 271
Bearing
Separator
Attachment
BHP181 RWH121 7.0 75 14.0 125 5076 350
BHP282 RCH202 12.0 107 24.0 214 5076 350
BHP382 RCH302 18.3 163 36.7 326 5076 350
BHP582 RCH603 25.0 222 64.6 575 3925 271
Bearing
Cup Puller
Attachment
BHP180 RWH121 7.0 75 14.0 125 5076 350
BHP280 RCH202 12.0 107 24.0 214 5076 350
BHP380 RCH302 18.3 163 36.7 326 5076 350
BHP580 RCH603 25.0 222 64.6 575 3925 271
NOTES:
• Accessories used with cylinder models RWH121, RCH202 and RCH302: The maximum rated capacity of the accessory item is
50 percent less than the cylinder maximum rated capacity.
• Accessories used with cylinder model RCH603: The maximum rated capacity of the accessory item is approximately 60 percent
less than the cylinder maximum rated capacity.
10.0 CAPACITIES
WARNING
Do not exceed the stated maximum hydraulic working pressure
for the puller or accessory being used. Refer to the information
contained in Sections 10.1 and 10.2.
Overloading and catastrophic failure could occur if the stated
maximum pressure is exceeded. Serious personal injury or death
may result.
Be aware that in some instances, the rated maximum capacity
of the puller or accessory may be LESS than the rated maximum
capacity of the cylinder, and that hydraulic pressure must be
reduced accordingly.

13
B
B
A
A
11.1 Specifications and Dimensions - Grip Puller Reach, Spread and Weights
11.0 PRODUCT DATA
Grip
Puller
Model
No.
Jaw
Length
Maximum Reach Maximum Spread Weight *
A B lb Kg
in mm in mm
SGH14 Std. 12.60 320 13.78 350 55.1 25
Long 15.75 400 15.94 405 59.5 27
SGH24 Std. 12.60 320 18.90 480 108.0 49
Long 17.13 435 21.26 540 114.6 52
SGH36 Std. 16.14 410 25.59 650 165.3 75
Long 20.67 525 28.35 720 178.5 81
SGH64 Std. 27.56 700 38.58 980 268.9 122
Long 33.46 850 42.52 1080 288.8 131
*Approximate weight of assembled puller, including body, adjusting rod, jaws and hydraulic cylinder.
Refer to Section 11.2 for
adjusting rod and point
protector dimensions.
Standard Length Jaws Extended Reach “Long”Jaws
(Optional Accessory)
B
B
A
A

14
11.2 Specifications and Dimensions - Adjusting Rod and Point Protector
Used with
Grip Puller
Model No.
Total Length Thread Length Thread Size Diameter Height
L N R d D H
in mm in mm in mm in mm in mm
SGH14 15.75 400 8.74 222 3/4" -16 UNF 0.83 21.0 1.50 38 0.65 16.5
SGH24 26.38 670 13.70 348 1" - 8 UNC 1.26 32.0 1.57 40 0.67 17
SGH36 31.10 790 16.81 427 1-1/4" - 7 UNC 1.50 38.0 1.73 44 0.71 18
SGH64 38.39 975 20.87 530 1-5/8" - 5.5 UNS 1.50 38.0 1.73 44 0.71 18
Used with
Grip Puller
Model No.
Jaw
Length
End Surface Width Total Thickness Length Distance Between
Holes
P R E L D
in mm in mm in mm in mm in mm
SGH14 Std. 0.59 15.0 0.98 25.0 0.49 12.5 17.17 436 3.27 83
Long 0.59 15.0 0.98 25.0 0.49 12.5 20.31 516 3.27 83
SGH24 Std. 0.69 17.5 1.22 31.0 0.61 15.5 21.65 550 4.53 115
Long 0.69 17.5 1.22 31.0 0.61 15.5 26.18 665 4.53 115
SGH36 Std. 0.94 24.0 1.61 41.0 0.87 22.0 27.48 698 4.92 125
Long 0.94 24.0 1.61 41.0 0.87 22.0 32.40 823 4.92 125
SGH64 Std. 1.06 27.0 1.97 50.0 1.18 30.0 41.73 1060 5.91 150
Long 1.06 27.0 1.97 50.0 1.18 30.0 47.64 1210 5.91 150
11.3 Specifications and Dimensions - Grip Puller Jaws
R
L
Nd
H
D2
60°
ED
L
P
ED
R
L
P
R
ED
L
P
ED
R
L
P
R
Extended Reach “Long” Jaws
Standard Length Jaws

15
V1, V2
W
X
X
11.4 Specifications and Dimensions - Bearing Cup Puller Attachment
Bearing
Cup Puller
Attachment
Model
Used with
Enerpac
Master
Puller Set
Spread Min. Spread Max. Length Thread Size Weight
S1 S2 T T2 U
in mm in mm in mm in mm lb Kg
BHP180 MPS14 1.6 40 5.7 145 4.5 115 9.3 237 3/4" -16 UNF 4.4 2.0
BHP280 MPS24 1.3 32 6.3 160 5.5 140 10.5 266 1" - 8 UNF 5.3 2.4
BHP380 MPS36 2.4 60 9.4 240 5.9 150 12.2 310 1-1/4" - 7 UNC 13.2 6.0
BHP580 MPS64 2.4 60 9.4 240 5.9 150 12.2 310 1-5/8" - 5.5 UNS 14.1 6.4
S1, S2
T1
T2
U
11.5 Specifications and Dimensions - Bearing Separator Attachment
Bearing
Separator
Attachment
Model
Used with
Enerpac
Master
Puller Set
Spread Min. Spread Max. Width Thread Size Weight
V1 V2 W X
in mm in mm in mm lb Kg
BHP181 MPS14 0.39 10 4.33 110 4.33 110 5/8" - 18 UNF 6.0 2.7
BHP282 MPS24 0.47 12 5.28 134 6.10 155 5/8" - 18 UNF 12.6 5.7
BHP382 MPS36 0.67 17 9.84 250 10.24 260 1" - 14 UNS 62.8 28.5
BHP582 MPS64 0.67 17 9.84 250 10.24 260 1-1/4" - 12 UNF 62.8 28.5

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