Craftex CX817N User manual

MODEL CX817 N
52'' FOOT SHEAR
USER MANUAL
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Version 1.0

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TABLE OF CONTENTS
CX817N Safety Instructions........................................................ 3
CX817N Features........................................................................ 4
CX817N Physical Features.......................................................... 5
Unpacking................................................................................... 6
Mounting ..................................................................................... 6
Foot Pedal................................................................................... 6
Front Extension Arms.................................................................. 7
Rear Extension Arms.................................................................. 7
Hold Down Adjustments.............................................................. 7
Blade Adjustment........................................................................ 8
Adjusting Blade Bow................................................................... 8
Finger Guard............................................................................... 9
Stops & Guides........................................................................... 9
Blade Care.................................................................................. 9
Return Spring Tension................................................................ 9
Lubrication................................................................................... 9
Parts Diagram............................................................................. 10
Parts List..................................................................................... 11
Warranty...................................................................................... 12

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Do not exceed the capacities of the
machines. Overloading it, can cause
damage to the machine and the work-
piece.
Only use this machine for the purpose it
is designed. Do not modify for a purpose
not intended by the manufacturer.
Always keep your hands away from the
pinching points of machine.
Always wear gloves, safety glasses and
safety shoes when operating this
machine.
Always check your machine for any
damaged punch, loose bolts or nuts and
any other unsafe condition before
operation.
Always have a secure footing when
using this machine.
Always keep the knives/cutters properly
adjusted and sharp.
Always keep children away from the
work area.
Make sure all guards are in place and in
working order before operation.
Do not use and store this machine in
rainy or wet locations. Always keep your
work area clean and dry.
Always read and understand the
instructions given in this manual before
operating your machine. Failure to do so
could result in serious personal injury
and damage to the machine.
WARNING!
The safety instructions given in this manual can not be complete because the environment in
every shop is different. Always consider your safety first as it applies to your individual working
conditions.
CX817N SAFETY INSTRUCTIONS

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MODEL CX817N - 52" FOOT SHEAR
As part of the growing line of Craftex CX-Series machineries, we are proud to offer the
CX817N a 52" Foot Shear. By following the instructions and procedures laid out in this user
manual, you will receive years of excellent service and satisfaction. The CX817N is a
professional tool and like all power tools, proper care and safety procedures should be
adhered to.
CAPACITY
Shear..............................................................52" @ 16 Gauge Mild Steel
Front Gauge Range........................................0 - 12-1/2"
Back Gauge Range........................................0 - 35"
Maximum Depth .............................................37"
CONSTRUCTION
Shear Blades..................................................Precision Ground Hardened Steel
Frame.............................................................Cast Iron
Table ..............................................................Cast Iron Machined
Hold Down Clamp...........................................Cast Iron
DIMENSIONS
Height.............................................................41"
Foot Print........................................................60" x 22"
52" FOOT SHEAR
FEATURES

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CX817N PHYSICAL FEATURES
Table
Rear Extension
Arms
Rear Adjustment
Blocks
Foot Pedal
Front Extension
Arms
Front Stop
Scale
Bevel
Gauge
Hold Down

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UNPACKING
The CX817N is properly packaged in
a carton for safe transportation.
When unpacking, carefully inspect the
carton and ensure that nothing has
been damaged during transit.
While doing the inventory if you can not find
any parts, check if the part is already
installed on the machine.
MOUNTING
The CX817N features four pre-drilled
holes on its base which allow mounting it
to the shop floor. It is recommended to
mount the shear to the shop floor for
safety and to offer the best overall
performance. Mounting hardware is not
included with the machine.
Lag shield anchors with lag bolts and
anchors studs are two popular methods for
mounting the machine to the concrete floor.
Anchor studs are stronger and more
permanent alternatives to the lag shield
anchors.
FOOT PEDAL
To assemble the foot pedal you will need
the help of an assistant.
TO INSTALL THE FOOT PEDAL:
Loosen the set screws holding the hinge
pins in place and slide them outward.
Lift the foot pedal with the help of an
assistant and position it over the hinge pin
hole and insert the hinge pin.
Secure it by tightening the set screws.
Link the two swivel bottoms through the
side arms of the foot pedal with the
supplied bolts and tighten in position. See
figure-1.
Figure-1 Foot pedal assembly
WARNING!
The CX817N is a very heavy machine.
Do not overexert yourself. Use a
forklift or other mechanical device to lift
and move the shear.

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FRONT EXTENSION ARMS
TO INSTALL THE FRONT EXTENSION
ARMS:
Loosen the four bolts on the front table.
Place the front extension arms over the
bolts and behind the special washers.
Align the channel of the front extension arm
with the channel on the side.
Make sure the ground flat surface on the
front extension arms are flush with the top
of the table surface.
Tighten the bolts and check to make sure
your alignments are still intact. See figure-2.
Figure-2 Front extension arm
REAR EXTENSION ARMS
Slide the rear extension arms into the
socket on the back of the table with the
scales face.
Tighten the set screws.
Attach the rear stop to the rear extension
bars and secure with the thumb screws
provided. See figure-3.
Figure-3 Installing rear extension arm
HOLD DOWN
ADJUSTMENT
TO ADJUST THE HOLD DOWN:
Tighten the hex nut on the top of the spring
to raise the hold down off the table.
Insert the shim under the hold down finger,
turn the hex nut to lower the hold down until
it makes light contact with the shim.
Repeat the above steps at the other sides
of the shear.
Tighten the two fixing bolts on the front of
the hold down securing it in place. See
figure-4.
Figure-4 Adjusting the hold down

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Recheck the gap to make sure the distance
is equal across the length of the hold down.
BLADE ADJUSTMENT
The blade adjustment has been made at
the factory before shipment. However, you
may find it necessary to check the blade
adjustment before operation.
TO PERFORM THE BLADE SET UP:
Loosen the two table bolts and table
adjustment screws on both sides of the
machine. See figure-5.
Figure-5 Table adjustment
Lower the blade and hold it in position using
the foot pedal.
Now, turn the table adjustment screws to
move the table and fixed blade until the
fixed blade makes light contact with the
moving blade all the way across the length.
Make sure the moving blade does not
overlap the fixed blade or it will cause
damage.
Use a sheet of paper and make several
cuts along the length of the blade. The
shear should cut through the paper cleanly.
Turn the table adjustment screws moving
the fixed blade away from the moving blade
so that you have a gap of 0.002". Check
this measurement with a feeler gauge.
Repeat the same step on the other side of
the machine so that gap is even across the
length of the blade.
Tighten the four leg bolts and make sure it
has not changed.
ADJUSTING BLADE BOW
The bow of the moving blade is adjusted by
loosening or tightening the bow bolt at the
center of the straightening rod. Check if
there is a change in the gap when the
moving blade is just below the top of the
fixed blade. After making adjustments to the
bow, repeat the blade adjustment section.
If the shear cuts paper on the ends
but not the center, turn the bow bolt
clockwise until paper is cut across
the length.
If the shear cuts paper at the center
but not the ends, turn the bow bolt
counter-clockwise until the paper is
cut across the length.
Figure-6 Adjusting the bow bolt

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FINGER GUARD
The CX817N features a plastic guard fixed
to the front of the hold down. Do not
remove under any circumstances. It will
keep your fingers out of the blade.
STOPS & GUIDES
The wing nuts on the top of the stops allow
adjusting the front stop and angle guide
quickly and easily. The rear extension arms
have micro adjusting stops to fine tune your
length. See figure-7.
Figure-7 Micro adjusting stop
BLADE CARE
The blade on the CX817N can be
removed by loosening the eight hex bolts
that secure the blade to the casting. See
figure-6.
The moving blade has two cutting
edges. You can rotate the blade to expose
the new cutting edge as soon as one
edge is dull. You can sharpen the blade
very easily with a surface grinder.
The fixed blade has only cutting edge and it
can also be sharpened by a surface
grinder.
Figure-8 Blade bolts and return spring
RETURN SPRING
TENSION
The return spring can be adjusted on the
foot lever. To increase the return rate,
tighten the hex nuts against the spring
shown in figure-9.
Figure-9 Return spring tension
LUBRICATION
Lubricate all pivot and sliding points on the
shear daily after use. Apply a thin coat of oil
on the blades and other bare cast iron
surfaces to prevent from rusting.
WARNING!
Do not remove the finger guard under
any circumstances.

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PARTS DIAGRAM