Campbell GXL User manual

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Table of Contents
Table of Contents............................................................................................................ 2
Warning and General Information ............................................................................ 2 - 3
Applications..................................................................................................................... 4
Definitions.................................................................................................................. 5 - 6
Safe Use of Campbell®Lifting Clamps..................................................................... 7 - 9
Lifting Clamp Models
GX .......................................................................................................... 10 - 13
GX Structural................................................................................................. 10
GX Sharp Leg ................................................................................................ 10
GXL ........................................................................................................ 14 - 18
SAC ........................................................................................................ 19 - 22
E ............................................................................................................. 23 - 26
H............................................................................................................. 27 - 30
GXRPC................................................................................................... 31 - 34
Duplex Hand Grip.......................................................................................... 35
Drum Handling Equipment
Single Drum Lifter, No. 52 .................................................................... 36 - 37
Double Drum Lifter, No. 252......................................................................... 38
Fork Truck Drum Lifter, No. 260................................................................... 39
Maintenance and Inspection ................................................................................ 40 - 43
WARNING:
Prior to selection, operation and/or maintenance of Campbell®Clamps, read and
understand the information provided in this manual.
The understanding and use of Definitions are important in determining the limitations
and proper applications of lifting clamps.
Failure to review and utilize recommended applications, operation and maintenance
instructions may result in serious injury to operator and others.
THIS PUBLICATION SUPERSEDES ALL PREVIOUSLY PUBLISHED AND/OR DISTRIBUTED
INFORMATION BY MANUFACTURER AND/OR ITS DISTRIBUTORS WITH RESPECT TO
APPLICABLE CAMPBELL (PREVIOUSLY MERRILL) LIFTING CLAMPS AND SUBJECT MATTER
DESCRIBED OR CONTAINED HEREIN.

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To Our Valued Customers:
Campbell®lifting clamps are known world-wide for lifting and conveying sheet steel, fabri-
cated sections and structural members. Within their capacity, the heavier the load, the
tighter they grip. Parts are drop forged and heat treated from prime quality steel for long
life and great strength relative to their weight. All Campbell lifting clamps are individually
inspected and proof tested to two times their working load limit. Replacement parts are
widely available and easy to install.
In addition to producing high quality products, we also give you complete instructions
on operating, inspecting, maintaining and safely using our clamps. The Campbell Lifting
Clamps Product Warnings manual describes the applications, operating and maintenance
instructions for all our lifting clamps. The Operator’s Manual is supplied with the purchase
of a new clamp and covers the specific model of clamp.
Campbell lifting clamps, like many other products, are often used in work environments
which can be dangerous. It would be impossible for any manual to describe all of the
ways that a product could be misused. Campbell warnings are intended to identify only
the most common risks. As a distributor or end user, it is your explicit responsibility to
identify the risk factors before putting any product into service. If you have any doubts
as to the clamp best suited to your application, contact your Campbell®distributor.
If you would like to receive additional copies of this manual or any Operator’s Manuals,
contact your Campbell®distributor or call us at [phone].
Warranty Exclusion
Any warranty, express or implied, which exceeds the descriptions stated in this catalog
or in our other materials, is not valid.

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Applications
Campbell®clamps may be used for various applications.
ŘLifting, turning over and transfer of steel plates
Model GX (No 180° Turns for GX Sharp Leg)..................................... 10
Model GXL ........................................................................................... 14
Model SAC ........................................................................................... 19
ŘVertical lifting and transfer of steel plates
Model E ................................................................................................ 23
ŘLifting, turning and mounting of wide flange beams and shape steel
Model GX Structural ............................................................................ 10
Model GXL ........................................................................................... 14
ŘHorizontal lifting and positioning of steel plates
Model H................................................................................................ 27
ŘVertical lifting and turning of hard or polished plates
Model GXRPC ...................................................................................... 31
ŘLifting stacked plates from horizontal to vertical position
Model GX Sharp Leg ........................................................................... 10
ŘHand or conveyer carry of plates and shape steel
Duplex Hand Grip ................................................................................ 35
ŘLifting and transfer of drums
Single Drum Lifter, No. 52 ................................................................... 36
Twin Drum Lifter, No. 252 ................................................................... 38
Fork Truck Drum Lifter, No. 260 ......................................................... 39

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Figure 1
Figure 2
Figure 3
DEFINITIONS
VERTICAL LIFT: The lifting of a vertical plate or
member in which the lifting force exerted by the
rigging is evenly distributed and is directly above
and in line with the clamp’s lifting shackle. This is
illustrated in (Fig. 1).
VERTICAL TURN/LIFT: Turns a single plate or mem-
ber from horizontal to vertical through a 90° arc, and
back to vertical through the same 90° arc; or from
horizontal to vertical to horizontal through 180° arc
(Fig. 2).
HORIZONTAL LIFT: Multiple clamps
are attached to the sides of a horizontal
plate. The clamps are attached to a multi-
leg sling or spreader bar centered over
the plate (Fig. 3).
FINISHED OR POLISHED PLATES:
Steel plates such as stainless steel
which have other than hot-rolled
surfaces are generally handled with
a non-marring clamp that has at least
one smooth gripping surface.
STRUCTURAL MEMBERS AND
FABRICATED SECTIONS: Unless other-
wise specified, clamps recommended
for structural members or fabricated
sections are limited to steel products
with a hardness not greater than 400
Brinell (43 Rockwell C). For other appli-
cations contact your Campbell® distributor
for lifting recommendations.
WARNING!: The capacity of all horizontal clamps is based on a sling angle
of 60°. Sling angles less than 60° increase the load exerted on the clamps.

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RATED CAPACITY: The rated capacity of a
Campbell®clamp is based on a clamp in “new”
or “as new” condition. It is the maximum load
that the product may lift when used in the way
described in this manual. Wear, misuse, abuse
and other use factors may lower the rated capacity.
These factors and shock loading must be considered
when choosing a Campbell clamp for a job.
WORKING LOAD LIMIT (WLL): The maximum load that should ever be applied to a
Campbell clamp. The Working Load Limit is forged into or stamped on the body of
every clamp (Fig. 4).
SHOCK LOAD: A force that results from the rapid movement of a load. A shock load
force is much greater than a force of a motionless load.
GRIP RANGE: The minimum and maximum plate thickness that a clamp can lift.
JAW OPENING: The capacity (grip range) of a clamp in terms of plate thickness.
OPERATING TEMPERATURES: Campbell clamps are designed for operation only
in temperatures ranging from 0 to 200 degrees Fahrenheit. This range applies to both
ambient and material temperatures.
LEVER-OPEN/ LEVER-CLOSED: This feature makes it easier to attach and remove
the clamp. A lever-actuated spring holds the cam in contact (lever closed) or away from
(lever open) the plate.
CAM ENGAGING LEVER (Locking Lever): A lever or chain activated spring that holds
the cam away from or in contact with the plate. This makes clamp operation easier. The
Campbell “GXL” and “E” clamps have this feature. These clamps will not lift a plate when
in the “lock open” position.
SCREW-ADJUSTED CAM: Convex cylindrical cams attached to a special screw
which, when tightened, places and keeps the cam in contact with the plate.
SPRING-LOADED CAM: Cam loaded by double torsional spring, which stays
engaged even under “no load” conditions.
Figure 4
WARNING!: A notice pointing out danger, informing the operator and others
that they should protect themselves.
WARNING!: Never lift a plate that is not within the grip range forged or stamped
on the clamp.

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SAFE USE OF CAMPBELL LIFTING CLAMPS
(DO’S AND DON’TS)
More than 90% of lifting clamp accidents are caused by
incorrect handling or use. Special attention is required
when the work is familiar or clamps become old. For your
own safety, read the following warnings carefully, and be
careful not to use clamps improperly and dangerously. All
warning information must be made available to product
users specifically before the first use, and at all times
afterward, for reference and updates.
1. DO use the right clamp for the job. Before using Campbell
clamps, carefully read the instructions and warnings in our
product literature, and understand them thoroughly (Fig. 5).
MOST IMPORTANTLY always stay clear of the load when
lifting! The operator should never lift over people or machinery
(Fig. 14). If you are not sure, contact a Campbell representa-
tive for proper use of our products.
2. DO NOT lift a plate which cannot be inserted all the way
into the clamp’s throat opening. Insert the plate or flange
to the full depth of the throat opening (Fig. 6). It is absolutely
necessary for the cam and pad to have maximum contact
on the plate to ensure a good, firm grip on the plate.
3. DO NOT use a clamp on a member whose thickness is less or more than the
grip range shown on the clamp. Every Campbell clamp has its lifting capacity
and grip range forged or stamped into the body (Fig. 7).
4. DO know the exact weight of
the lifted member before the lift
(Fig. 8). Never lift a weight greater
than the Working Load Limit (WLL)
of the clamp.
5. DO match the clamp working load
capacity to the weight of the load.
DO NOT use a big clamp to lift a
small load.
Figure 5
Figure 6
Figure 7 Figure 8

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Figure 9
Figure 10
NO!
Figure 11
Figure 12
NEVER!
6. DO place the pad side (short leg) of the clamp under the
plate when lifting from horizontal to vertical position with
clamps other than GX or GXL models (Fig. 9).
7. DO NOT use a clamp that needs repair. Inspect the
clamp prior to each lift. Refer to the Clamp Maintenance
and Inspection section of this manual for detailed
instructions .
8. DO NOT lift a plate or member whose hardness is greater
than 400 Brinell (43 Rockwell C) with any clamp other than
a non-marring clamp.
9. DO NOT attach a clamp to an oily surface or any surface
other than a clean, dry surface.
10.DO NOT lift more than one plate at a time (Fig. 10), except
with horizontal clamps.
11.DO NOT lift tapered beams or members other than ordi-
nary structural steel.
12.DO use as many clamps as necessary to balance the
load (Fig. 11). Do not try to lift unbalanced loads.
13.DO use two or more clamps whenever possible.
14.DO NOT exceed the combined WLL of two clamps
when using two or more clamps (Fig. 11).
15.DO NOT attach a clamp directly to the crane hook. Use
a sling between the crane hook and the clamps to
minimize interference in clamp operation and its ability
to stay in the right place on the plate.
16.DO NOT stand near the load when lifting. The operator
should stand clear of the load and should never lift over
people or machinery (Fig. 14).
17.DO NOT misuse a clamp. Never lift a plate from the
bottom of a stack (Fig. 12).
18.DO NOT rush. Lift slowly and smoothly.

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Figure 13
Figure 14
19.DO NOT bump the load while lifting or moving.
Bumping the load may cause clamps to release (Fig. 13).
20.DO NOT tamper with the cam engaging mechanism of a
clamp while making a lift. Always lift and move a load
with the clamp in the lever-closed (“lock-closed”) position.
21.DO NOT remove a clamp or disengage the cam until the
plate or member is fully supported and at rest.
22. DO NOT alter a clamp. Use only the manufacturer’s
recommended replacement parts. The clamp
manufacturer’s specifications include specific
materials and manufacturing procedures. Never
grind, weld or in any way alter the clamp as this
could cause severe damage or failure.

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Model GX
VERTICAL LIFT
VERTICAL TURN/LIFT
HORIZONTAL LIFT
SPRING-LOADED CAM
APPLICATION
The standard GX clamp (Fig. 15) is a versatile clamp used mostly for steel warehousing
and benchwork. The GX clamp can be used for vertical, vertical/turn or horizontal lifts.
The GX clamp is recommended for turning a single sheet or fabricated structure. Due to
its swiveling pad and spring-loaded cam, the clamp always stays in contact with the
work face of the load, even when the load is turning through 180 degrees. The most
exclusive feature of the GX clamp is its wear indicator system.
When any of the cam’s teeth are flattened, chipped or dulled
between the unique wear indicator grooves (Fig. 16), it’s time to
change the cam. (Always replace the pad at the same time as
the cam.) In addition, due to their forged components, GX clamps
have one of the lowest weight-to-Working Load Limit ratio of
any clamps sold in the world. This means they are easy to use
and less tiring for the user. The GX design has also been used in
several specialized applications, such as:
Ř GX Structural Clamp is a variation of the GX body shape and
is designed for a secure bite on small or odd-shaped, wide
flange beams.
Ř GX Chain Connector Clamp is a standard GX clamp fitted with a chain
connector instead of a shackle. Using this clamp increases the flexibility
of a multiple leg chain sling.
Ř GX Sharp Leg Clamp is a variation of the standard GX clamp designed to lift
stacked plates from horizontal to vertical position. The long sharp leg can be
driven between the top two plates to fully engage the clamp. This clamp is not
equipped with a swiveling pad and it should not be used for turning a load.
Figure 15
Figure 16
NORMAL WORN

OPERATION
Step 1
Before using any Campbell clamp, read the Applications section at the beginning of
this manual to be sure the lift is appropriate for the size and style of clamp. Know
the type of material to be moved before making a lift. Some exotic steels are too
hard to allow the teeth of the cam to sink in. This may be true of structural members
and fabricated sections.
Step 2
Choose a clamp with the right capacity and grip range. The
model type, capacity and grip range are shown on the face
of the clamp (Fig. 17).
Step 3
Inspect the clamp before each lift (Fig. 18).
A. Inspect the cam and pad for wear and defects.
Gripping surfaces must be free off foreign matter.
If either the cam or pad are worn or defective,
replace both cam and pad at the same time.
B. Inspect the shackle and visible linkage for elongation,
distortion, wear or damage.
C. Inspect the clamp body for wear, damage or distortion.
D. Do not use any clamp that needs repair.
If in doubt, refer to the Maintenance and Inspection section of this manual
for detailed instructions.
11
Figure 17
WARNING!: Do not lift a plate or member with a hardness greater than
400 Brinell (43 Rockwell C)
WARNING!: Never lift a weight greater than the
Working Load Limit shown on the clamp.
Figure 18

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Step 4
Determine if more than one sling is required to balance the load (Fig. 19). When the
size or shape of a plate or fabricated section is too large for one clamp to properly
balance the load, the use of a multiple sling or spreader bar is required.
A. All clamps used in a multiple sling or
spreader bar assembly must be rated
at the same capacity.
B. The lifting angle (Fig. 19) between the sling
legs on opposite sides of the load should
be less or equal to 60 degrees.The lifting
angle (Fig. 20) between the sling legs on
same side of the load should be less or
equal to 20 degrees.
C. The Working Load Limit of any multiple sling
assembly or spreader bar assembly must
not be more than the combined Working
Load Limit of two clamps, no matter how
many clamps are in the assembly.
Step 5
Position the clamp(s) to balance the load. Position
the clamp(s) so the lifting force of the crane is directly
in line with each clamp’s lifting shackle, and the load
is evenly distributed (Fig. 20).
WARNING!: Do not side load. Never exceed an angle of 10° from vertical.
WARNING!: Never attach a
clamp directly to the crane
hook. Use a sling between
the crane hook and clamp to
minimize interference in the
clamp operation.
Figure 20
10° max Angle
of lift
should
not be
less than
80°
80°
Figure 19
Angle of
lift should
not be
less than
60° 60°

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Step 6
Engaging the clamp:
A. Press down on the lifting shackle until the cam retracts. Occasionally, a cam
may jam against a pad. To release, either tap the heel of the shackle, or grasp
clamp by the shackle and tap bottom of clamp sharply against floor or other
solid surface.
B. Install the clamp over the plate to the full depth of the throat opening.
C. Release the shackle so the cam engages the plate.
Step 7
Lift slowly and smoothly. The operator should stand clear of the load and never
lift over people or machinery.
Step 8
After the plate is in place and at rest, the GX clamp can be removed by retracting
the cam away from the plate. To do this, press down on the lifting shackle while
at the same time lifting the clamp from the plate. If the cam is difficult to retract, a
slight tap on the heel of the shackle or the clamp’s body should release it.
Step 9
Campbell®recommends inspection of each lifting clamp before and after
each lift.Refer to the Maintenance and Inspection section of this manual for
detailed instructions.
WARNING!: Do not begin to lift until all personnel are clear of the lift area.
Never stand under or near a member being lifted.
WARNING!: Do not jerk or bump load while lifting.
WARNING!: Do not use a clamp that needs repair.

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Model GXL
VERTICAL LIFT
VERTICAL TURN/LIFT
HORIZONTAL LIFT
CAM ENGAGING LEVER
(LOCKING LEVER)
SPRING-LOADED CAM
APPLICATION
The GXL clamp (Fig. 21) is a versatile clamp most commonly used for steel warehousing
and benchwork. The GXL clamp can be used for vertical, vertical/turn or horizontal lifts.
The GXL clamp is recommended for the turning of a single sheet or fabricated structure.
Due to its swiveling pad and spring-loaded cam, the clamp always stays in contact with
the work face of the load, even when the load is turning through 180 degrees. In addition,
the clamp is also equipped with a cam engaging lever which allows a convenient way of
closing and opening the clamp. The most exclusive feature of the
GXL clamp is its wear indicator system. When any of the cam’s
teeth are flattened, chipped or dulled between the unique wear
indicator grooves, (Fig. 22) it’s time to change the cam. (Always
replace the pad at the same time as the cam.) In addition, due to
their forged components, GXL clamps have one of the lowest
weight-to-Working Load Limit ratios of any clamps sold in the
world. This means they are easy to use and less tiring for the user.
OPERATION
Step 1
Before using any Campbell®clamp, refer to the Applications section at the beginning of
this manual to be sure the lift to be made is appropriate for the size and style of clamp.
Know the type of material to be moved before making a lift. Some exotic steels are too
hard to allow the teeth of the cam to sink in. This may be true of structural members and
fabricated sections.
Figure 21
Figure 22
NORMAL WORN

Step 2
Select a clamp with the appropriate capacity and
grip range.
The model designation, capacity and grip range
are indicated on the face of the clamp (Fig. 23).
Step 3
Inspect the clamp before each lift (Fig. 24).
A. Inspect the cam and pad for wear and defects.
Gripping surfaces must be free of foreign matter.
If either the cam or pad are worn or defective,
replace the cam and pad at the same time.
B. Inspect the shackle and visible linkage for
elongation, distortion, wear or damage.
C. Inspect the clamp body for wear, damage or
distortion.
D. Do not use any clamp that needs repair.
If in doubt, refer to the Maintenance and Inspection section of this manual for
detailed instructions.
15
Figure 23
WARNING!: Do not lift a plate or member with a hardness greater than 400
Brinell (43 Rockwell C)
WARNING!: Never lift a weight greater than the
Working Load Limit shown on the clamp.
Figure 24

16
WARNING!: Do not side load. Never exceed an angle of 10° from vertical.
WARNING!: Never attach a
clamp directly to the crane
hook. Use a sling between
the crane hook and clamp to
minimize interference in the
clamp operation.
Figure 26
10° max Angle
of lift
should
not be
less than
80°
80°
Figure 25
Angle of
lift should
not be
less than
60° 60°
Step 4
Determine if more than one sling is required to balance the load (Fig. 25). When the size
or shape of a plate or fabricated section is too large for one clamp to properly balance
the load, the use of a multiple sling or spreader bar is required.
A. All clamps used in a multiple sling or
spreader bar assembly must be rated
at the same capacity.
B. The lifting angle (Fig. 25) between the sling
legs on opposite sides of the load should
be less or equal to 60 degrees. The lifting
angle (Fig. 26) between the sling legs on
same side of the load should be less or
equal to 20 degrees.
C. The Working Load Limit of any multiple sling
assembly or spreader bar assembly must not
be more than the combined Working Load Limit
of two clamps, no matter how many clamps are
in the assembly.
Step 5
Position the clamp(s) to balance the load. Position
the clamp(s) so the lifting force of the crane is directly
in line with each clamp’s lifting shackle, and the load
is evenly distributed (Fig. 26).

17
Step 6
Engaging the clamp:
VERTICAL LIFT
VERTICAL TURN/LIFT
A. Lower the clamp onto the plate with the lever in the “lever open” position until
clamp rests on plate (Fig. 27). Occasionally, a cam may jam against a pad. To
release, either tap the heel of the shackle, or grasp clamp by the shackle and
tap bottom of clamp sharply against floor or other solid surface.
B. Move lever to “lever closed” position while pushing the clamp down to ensure
the plate is inserted to the full depth of the throat (Fig. 28 and 29). The cam is
forced against the plate and you are now ready to lift the plate.
HORIZONTAL LIFT
A. Place the clamp on the plate with the lever in “lever open” position and the
short leg under the plate (Fig. 27). Occasionally, a cam may jam against a pad.
To release, either tap the heel of the shackle, or grasp clamp by the shackle
and tap bottom of clamp sharply against floor or other solid surface.
B. Push the clamp onto the plate until the plate touches the back of the clamp’s
throat and move lever to “lever closed” position (Fig. 28).
C. Ensure that the plate is inserted to the full depth of the plate and the cam is
engaged against the plate. You are now ready to lift the plate (Fig. 29).
Step 7
Lift slowly and smoothly. The operator should stand clear of the load and never lift
over people or machinery.
WARNING!: Do not begin to lift until all personnel are clear of the lift area.
Never stand under or near a member being lifted.
WARNING!: Do not jerk or bump load while lifting.
Figure 27 Figure 28 Figure 29

Step 8
After the plate is fully supported and at rest, the GXL clamp can be removed by
retracting the cam away from the plate. To do so, open the lever to the “open”
position or, press down on the lifting shackle while at the same time lifting the
clamp from the plate. If the cam is difficult to retract, a slight tap on the heel of
the shackle or the clamp’s body should release it.
Step 9
Campbell®recommends inspection of each lifting clamp before and after each lift. Refer
to the Maintenance and Inspection section of this manual for detailed instructions.
18
WARNING!: Never tap the cam engaging lever or use a cheater pipe
to force lever open.
WARNING!: Do not use a clamp that needs repair.

Model SAC
VERTICAL LIFT
VERTICAL TURN/LIFT
HORIZONTAL LIFT
SCREW-ADJUSTED CAM
APPLICATION
The SAC clamp (Fig. 30) is capable of handling steel plate or fabricated structures from
horizontal through a 180 degree arc. The SAC clamp has a convex, serrated cam that
swivels on a ball joint. This clamp has a minimum number of moving parts.
OPERATION
Step 1
Before using any Campbell®clamp, refer to the Applications section at the beginning of
this manual to be sure the lift to be made is appropriate for the size and style of clamp.
Know the type of material to be moved before making a lift. Some exotic steels are too
hard to allow the teeth of the cam to sink in. This may be true of structural members and
fabricated sections.
Step 2
Select a clamp with the appropriate capacity and grip range. The model designation,
capacity and grip range are indicated on the face of the clamp.
19
Figure 30
WARNING!: Do not lift a plate or member with a hardness greater than 400
Brinell (43 Rockwell C)
WARNING!: Never lift a weight greater than the Working Load Limit shown
on the clamp.

20
Step 3
Inspect the clamp before each lift (Fig. 31).
A. Inspect the cam and pad for wear and defects.
Gripping surfaces must be free of foreign matter.
If either the cam or pad are worn or defective,
replace the cam and pad at the same time.
B. Inspect the shackle and visible linkage for elongation,
distortion, wear or damage.
C. Inspect the clamp body for wear, damage or distortion.
D. Do not use any clamp that needs repair.
If in doubt, refer to the Maintenance and Inspection section of
this manual for detailed instructions.
Step 4
Determine if more than one sling is required to balance the load. When the size or shape
of a plate or fabricated section is too large for one clamp to properly balance the load, the
use of a multiple sling or spreader bar is required (Fig. 32).
A. All clamps used in a multiple sling or
spreader bar assembly must be rated
at the same capacity.
B. The lifting angle (Fig. 32) between the sling legs
on opposite sides of the load should be less or
equal to 60 degrees. The lifting angle (Fig. 33)
between the sling legs on same side of the load
should be less or equal to 40 degrees.
C. The Working Load Limit of any multiple sling
assembly or spreader bar assembly must not
be more than the combined Working Load Limit
of two clamps, no matter how many clamps are
in the assembly.
Figure 31
Figure 32
Angle of
lift should
not be
less than
60° 60°